ascend/trunk/configure.in

#--------------------------------------------------------------------
#  A configure.in file for ASCEND.
#
#  Process `configure.in' file with `autoconf' to produce
#  a `configure' script.  This `configure.in' was prepared
#  for AutoConf v2.12/13.
#--------------------------------------------------------------------

#--------------------------------------------------------------------
#	Disable caching since it seems to get in the way
#	more times than it helps us.
#--------------------------------------------------------------------
define([AC_CACHE_LOAD], )dnl
define([AC_CACHE_SAVE], )dnl


#--------------------------------------------------------------------
#	This file must exist for configure to continue.  It's
#	how we know we're in the right place.
#--------------------------------------------------------------------
AC_INIT(ascend4/compiler/ascParse.y)


#--------------------------------------------------------------------
#  CVS Most Recent Revision Data
#	Put this data after AC_INIT since we want this information
#	to also appear in configure and autoconf, when creating
#	configure, strips all comments that appear in configure.in
#	before AC_INIT
#    $Revision: 1.38 $
#    $Date: 2003/11/23 19:36:39 $
#    $Author: ballan $
#    $Source: /afs/cs.cmu.edu/project/ascend/Repository/configure.in,v $
#--------------------------------------------------------------------


#--------------------------------------------------------------------
#	Where configure should look for files it needs.
#--------------------------------------------------------------------
AC_CONFIG_AUX_DIR(config)

#--------------------------------------------------------------------
#	Set the output variables prefix and exec_prefix that
#	determine where things will be installed.
#--------------------------------------------------------------------
if test "${prefix}" = "NONE"; then
    prefix=/usr/local
fi
if test "${exec_prefix}" = "NONE"; then
    exec_prefix=$prefix
fi


#--------------------------------------------------------------------
#	For the Fortran support libraries and the TCL/TK libraries
#	and header files, we unfortunately need the full path to
#	these files.  The problem with having the full path is that
#	if the user moves the source tree, things will break unless
#	the user re-runs configure.
#--------------------------------------------------------------------
ascpwd=`pwd`
fullpathsrcdir=`cd $srcdir ; pwd`


#--------------------------------------------------------------------
#	The asc_include variable is (directory) path to the ascend4
#	SOURCE directory relative to the immediate subdirectories of
#	the ascend4 OBJECT directory.
#	-- If we are building in the source directory ($srcdir is "."
#	   asc_include is simply "../."
#	-- If the user gives us a full path to the configure script,
#	   we just append "/ascend4" to that full path:
#	   "$scrdir/ascend4"
#	-- For any other value of $srcdir (like ../src/), we go up
#	   two directories (to get to the top of the OBJECT tree,
#	   insert the source directory, and then go back down one
#	   level to the ascend4 directory: "../../$srcdir/ascend4"
#--------------------------------------------------------------------
case "$srcdir" in
    .)
        asc_include="../$srcdir"
        ;;
    /*)
        asc_include="$srcdir/ascend4"
        ;;
    *)
        asc_include="../../$srcdir/ascend4"
        ;;
esac


#--------------------------------------------------------------------
#	Do basic checks to determine
#	* if we have `ranlib'
#	* if we can create symbolic links
#	* if `make' sets the MAKE macro
#	* a bsd-compatible `install' program
#	  If we use the install-sh script that comes with configure,
#	  prefix it with the current directory so it'll work in
#	  subdirectories.  Unfortunately, it won't work if the user
#	  moves the source tree.
#--------------------------------------------------------------------
AC_PROG_RANLIB
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_PROG_INSTALL
case "X$INSTALL" in
    X/*)
        ;;
    *)
        INSTALL="$ascpwd/$INSTALL"
        ;;
esac


#--------------------------------------------------------------------
#	Get the host type for various checks along the way
#--------------------------------------------------------------------
AC_CANONICAL_HOST


#--------------------------------------------------------------------
#	Check for the C compiler: set CC and CFLAGS.
#	If the user does NOT specify `--enable-gcc' on the configure
#	command command line, set CC to either the envar CC or `cc'.
#	Call AC_PROG_CC which will use the value of CC (perhaps set
#	immediately above) or will check for `gcc' and then for `cc'
#	if `gcc' is not found.
#
#	If we are using GCC, then assume it groks ANSI.  Otherwise,
#	try to compile a small program using ANSI constructs with
#	CC.  If this fails, try to locate each of the following:
#		c89 xlc acc
#	and if successful, see if it compiles an ANSI C program.
#	(Doing this in a loop would be ideal, but configure caches
#	the result of AC_CHECK_PROG and uses the cached value for
#	all but the first pass through the loop.  This is also the
#	reason we have to use a different variable asc_cc1, asc_cc2
#	for each call to AC_CHECK_PROG.
#
#	If we do not find an ANSI C compiler, print a warning and
#	use the first value of CC we tried.
#--------------------------------------------------------------------

AC_ARG_ENABLE(gcc,
    [
ASCEND specific options

Compiler options:
  --enable-gcc            allow use of gcc if avaiable],
    [asc_gcc_ok=$enableval], [asc_gcc_ok=no])
if test ! "$asc_gcc_ok" = "yes"; then
    CC=${CC-cc}
fi
asc_orig_cc=$CC

if test "X$asc_gcc_ok" = "Xyes" ; then
    asc_ansi_ok=yes
else
    AC_MSG_CHECKING(
        [whether $CC understands const, void*, and function prototypes])
    AC_TRY_COMPILE( , [
          int tstproto(int arg1, char * arg2);
          int tstconst(const int arg1, const char *arg2);
          int tstvoidp(const int arg1, const void *arg2); ],
        [ asc_ansi_ok=yes ], [ asc_ansi_ok=no ])
    AC_MSG_RESULT($asc_ansi_ok)
fi

if test "$asc_ansi_ok" = no ; then
    AC_CHECK_PROG(asc_cc1, c89, c89, NONE)
    if test ! "$asc_cc1" = NONE ; then
        CC=$asc_cc1
        AC_MSG_CHECKING(
            [whether $CC understands const, void*, and function prototypes])
        AC_TRY_COMPILE( , [
              int tstproto(int arg1, char * arg2);
              int tstconst(const int arg1, const char *arg2);
              int tstvoidp(const int arg1, const void *arg2); ],
            [ asc_ansi_ok=yes ], [ asc_ansi_ok=no ])
        AC_MSG_RESULT($asc_ansi_ok)
    fi
fi

if test "$asc_ansi_ok" = no ; then
    AC_CHECK_PROG(asc_cc2, xlc, xlc, NONE)
    if test ! "$asc_cc2" = NONE ; then
        CC=$asc_cc2
        AC_MSG_CHECKING(
            [whether $CC understands const, void*, and function prototypes])
        AC_TRY_COMPILE( , [
              int tstproto(int arg1, char * arg2);
              int tstconst(const int arg1, const char *arg2);
              int tstvoidp(const int arg1, const void *arg2); ],
            [ asc_ansi_ok=yes ], [ asc_ansi_ok=no ])
        AC_MSG_RESULT($asc_ansi_ok)
    fi
fi

if test "$asc_ansi_ok" = no ; then
    AC_CHECK_PROG(asc_cc3, acc, acc, NONE)
    if test ! "$asc_cc3" = NONE ; then
        CC=$asc_cc3
        AC_MSG_CHECKING(
            [whether $CC understands const, void*, and function prototypes])
        AC_TRY_COMPILE( , [
              int tstproto(int arg1, char * arg2);
              int tstconst(const int arg1, const char *arg2);
              int tstvoidp(const int arg1, const void *arg2); ],
            [ asc_ansi_ok=yes ], [ asc_ansi_ok=no ])
        AC_MSG_RESULT($asc_ansi_ok)
    fi
fi

AC_PROG_CC

if test "$asc_ansi_ok" = no ; then
    CC=$asc_orig_cc
    AC_MSG_ERROR([Cannot find an ANSI C compiler.  ASCEND will not build
	without an ANSI compiler.  If you have an ANSI compiler which
	configure is not finding, set the CC environment variable to
	the full path fo the compiler and rerun configure.])
fi


#--------------------------------------------------------------------
#	Do other misc checks with CC and CFLAGS.
#
#	Determine how to run the C preprocessor.
#
#	If the user specifies --enable-optimization, remove `-g'
#	from CFLAGS, add `-O' to CFLAGS, and define `NDEBUG'.  If
#	we are not building optimized, check for special libraries
#	needed for building a debugging binary (currenly only
#	/usr/lib/end.o under HPUX).
#
#	Check if we're running on AIX; if so, add `-D_ALL_SOURCE'
#	to CFLAGS.
#
#	Check if we're running on HPUX; if so, add -D_HPUX_SOURCE'
#	to CFLAGS unless the C preprocessor goes it for us.
#--------------------------------------------------------------------

AC_PROG_CPP

AC_ARG_ENABLE(optimization,
    [  --enable-optimization   optimize the C code while building ascend],
    [asc_do_opt="$enableval"], [asc_do_opt=no])
if test "$asc_do_opt" = yes; then
    CFLAGS=`echo "-O $CFLAGS " | sed 's/ -g / /g'`
    AC_DEFINE(NDEBUG)
else
    AC_PATH_PROG(DEBUG_LIBS, end.o, , /usr/lib)
fi

AC_MSG_CHECKING([for AIX])
AC_EGREP_CPP(yes, [
#ifdef _AIX
    yes
#endif
], [ asc_aix=yes ; AC_DEFINE(_ALL_SOURCE) ], [asc_aix=no])
AC_MSG_RESULT($asc_aix)

AC_MSG_CHECKING([whether -D_HPUX_SOURCE is needed])
AC_EGREP_CPP(yes, [
#ifdef __hpux
#ifndef _HPUX_SOURCE
    yes
#endif
#endif
], [ asc_hpux=yes ; AC_DEFINE(_HPUX_SOURCE) ], [asc_hpux=no])
AC_MSG_RESULT($asc_hpux)

# Check the size of pointers; if cross compiling, assume 32 bit pointers
AC_CHECK_SIZEOF(void *, 4)


#--------------------------------------------------------------------
#	Set YACC.
#	See if we can find `yacc' ourselves; if not, call the
#	autoconf macro which looks for `bison' and then for `yacc'
#--------------------------------------------------------------------
asc_found_yacc=0
AC_CHECK_PROG(YACC, yacc, yacc, [asc_found_yacc=no])
if test "$asc_found_yacc" = no ; then
    AC_PROG_YACC
fi


#--------------------------------------------------------------------
#	Set LEX.
#	ASCEND requires a `flex' which understands -P (allows you to
#	specify a prefix other than `yy').  The -P flag was added at
#	the same time a -V (version) flag was added (version 2.4.1),
#	so if `flex' understands -V, it'll understand -P (checking
#	for -P directly requires a flex input file).
#
#	1. If `LEX' is not set, look for `flex' and set `LEX' to
#	   `flex' if found.
#	2. If `flex' was found, see if it understands -V.  If so,
#	   set `scanner_src' and `typer_src' to have `flex' generate
#	   the C files from the flex input files
#	   ascend4/compiler/scanner.l & ascend4/interface/typelex.l
#	   We don't need to look for libfl.a since we define
#	   yywrap() ourselves.
#	3. If `flex' wasn't found or was found but isn't new enough:
#	   a. Print a warning message
#	   b. Set `scanner_src' and `typer_src' to use pre-generated
#	      C files for the flex files mentioned in (2).
#	   c. Set `LEX' to `lex'
#	   d. Search for the lex library `libl.a' and set LEXLIB to
#	      its location.
#--------------------------------------------------------------------
AC_CHECK_PROG(LEX, flex, flex)

if test -n "$LEX" ; then
    AC_MSG_CHECKING([whether $LEX is at least version 2.4.1])
    echo "$LEX -V" 1>&5
    if $LEX -V 1>&5 2>&5 ; then
        AC_MSG_RESULT(yes)
        scanner_src="scanner.c.from.flex"
        typer_src="typelex.c.from.flex"
    else
        AC_MSG_RESULT(no)
        LEX=''
    fi
fi

if test -z "$LEX" ; then
    AC_MSG_WARN([Cannot find a flex lexer version 2.4.1 or greater.
	Using pregenerated C files for ascend4/compiler/scanner.l
	and ascend4/interface/typelex.l.  If you have flex 2.4.1
	or newer, set the LEX environment variable to its location
	and run configure again.])
    scanner_src="scanner.c.from.c"
    typer_src="typelex.c.from.c"

    # let configure set LEX and LEXLIB even though we won't be using them
    AC_PROG_LEX
fi


#--------------------------------------------------------------------
#	Math libraries.
#	On a few very rare systems, all of the libm.a stuff is
#	already in libc.a.  Set compiler flags accordingly.
#	Also, Linux requires the "ieee" library for math to work
#	right (and it must appear before "-lm").
#
#	When building on HPUX with GCC, GCC cannot find `copysign'
#	because it lives in an odd place; see if we need to add
#	this odd place to MATH_LIBS.
#
#	See if erf(), the error function, exists; if so, define
#	HAVE_ERF.
#--------------------------------------------------------------------
AC_CHECK_FUNC(sin, MATH_LIBS="", MATH_LIBS="-lm")

AC_CHECK_LIB(ieee, printf, [MATH_LIBS="-lieee $MATH_LIBS"])

if test -n "$MATH_LIBS" ; then
    AC_CHECK_LIB(m, copysign, ,
        AC_CHECK_LIB(m, drem, [MATH_LIBS="$MATH_LIBS /lib/pa1.1/libM.a"]
                     , , /lib/pa1.1/libM.a
        ),
    $MATH_LIBS)
fi

# store the current list of libraries, add the math libraries to LIBS,
# check for erf(), then reset the value of LIBS.
asc_keep_LIBS="$LIBS"
LIBS="$LIBS $MATH_LIBS"
AC_CHECK_FUNCS(erf)
LIBS="$asc_keep_LIBS"


#--------------------------------------------------------------------
#	Check for X11.
#	We'll use the simple autoconf builtin macro for finding
#	X11 until we find a reason not to.
#
#	On Solaris and IRIX, add the path to the X library to the
#	run-time shared-library-search-path so the ASCEND binary
#	can find the X library without the user having to set
#	LD_LIBRARY_PATH
#--------------------------------------------------------------------
AC_PATH_X
if test -n "$x_includes"; then
    X11_INCLUDES="-I$x_includes"
fi
if test -n "$x_libraries"; then
    X11_LIBRARIES="-L$x_libraries"
    case "$host" in
        sparc-sun-solaris*)
            X11_RUN_PATH="-R$x_libraries" 
            ;;
        mips-sgi-irix*)
            X11_RUN_PATH="-rpath $x_libraries"
            ;;
        *)
            X11_RUN_PATH=""
            ;;
    esac
fi


#--------------------------------------------------------------------
#	Check for the existence of various libraries.  The order here
#	is important, so that then end up in the right order in the
#	command line generated by make.  The -lsocket and -lnsl
#	libraries require a couple of special tricks:
#	1. Use "connect" and "accept" to check for -lsocket, and
#	   "gethostbyname" to check for -lnsl.
#	2. Use each function name only once:  can't redo a check
#	   because autoconf caches the results of the last check
#	   and won't redo it.
#	3. Use -lnsl and -lsocket only if they supply procedures that
#	   aren't already present in the normal libraries.  This is
#	   because IRIX 5.2 has libraries, but they aren't needed and
#	   they're bogus:  they goof up name resolution if used.
#	4. On some SVR4 systems, can't use -lsocket without -lnsl
#	   too. To get around this problem, check for both libraries
#	   together if -lsocket doesn't work by itself.
#--------------------------------------------------------------------
dnl AC_CHECK_LIB(Xbsd, printf, [LIBS="$LIBS -lXbsd"])

asc_checkBoth=0
AC_CHECK_FUNC(connect, [asc_checkSocket=0], [asc_checkSocket=1])
if test "$asc_checkSocket" = 1; then
    AC_CHECK_LIB(socket, printf, [X11_EXTRA_LIBS="-lsocket"],[asc_checkBoth=1])
fi
if test "$asc_checkBoth" = 1; then
    asc_oldLibs=$LIBS
    X11_EXTRA_LIBS="-lsocket -lnsl"
    LIBS="$LIBS $X11_EXTRA_LIBS"
    AC_CHECK_FUNC(accept, asc_checkNsl=0, [X11_EXTRA_LIBS=""])
    LIBS=$asc_oldLibs
fi
asc_oldLibs=$LIBS
LIBS="$LIBS $X11_EXTRA_LIBS"
AC_CHECK_FUNC(gethostbyname, ,
    AC_CHECK_LIB(nsl, printf, [X11_EXTRA_LIBS="$X11_EXTRA_LIBS -lnsl"]))
LIBS=$asc_oldLibs


#--------------------------------------------------------------------
#	The following comes directly from the configure.in file for
#	Tcl8.0.
#
#	The statements below define a collection of symbols related to
#	dynamic loading and shared libraries:
#
#	DL_OBJS -	Name of the object file that implements dynamic
#			loading for ASCEND on this system.
#	DL_LIBS -	Library file(s) to include in tclsh and other base
#			applications in order for the "load" command to work.
#	LD_FLAGS -	Flags to pass to the compiler when linking object
#			files into an executable application binary such
#			as tclsh.
#	LD_SEARCH_FLAGS-Flags to pass to ld, such as "-R /usr/local/tcl/lib",
#			that tell the run-time dynamic linker where to look
#			for shared libraries such as libtcl.so.  Depends on
#			the variable LIB_RUNTIME_DIR in the Makefile.
#	MAKE_LIB -	Command to execute to build the ASCEND library;
#			differs depending on whether or not ASCEND is being
#			compiled as a shared library.
#	SHLIB_CFLAGS -	Flags to pass to cc when compiling the components
#			of a shared library (may request position-independent
#			code, among other things).
#	SHLIB_LD -	Base command to use for combining object files
#			into a shared library.
#	SHLIB_LD_LIBS -	Dependent libraries for the linker to scan when
#			creating shared libraries.  This symbol typically
#			goes at the end of the "ld" commands that build
#			shared libraries. The value of the symbol is
#			"${LIBS}" if all of the dependent libraries should
#			be specified when creating a shared library.  If
#			dependent libraries should not be specified (as on
#			SunOS 4.x, where they cause the link to fail, or in
#			general if ASCEND and Tk aren't themselves shared
#			libraries), then this symbol has an empty string
#			as its value.
#	SHLIB_SUFFIX -	Suffix to use for the names of dynamically loadable
#			extensions.  An empty string means we don't know how
#			to use shared libraries on this platform.
#	ASC_LIB_FILE -	Name of the file that contains the ASCEND library, such
#			as libtcl7.8.so or libtcl7.8.a.
#	ASC_LIB_SUFFIX -Specifies everything that comes after the "libtcl"
#			in the shared library name, using the $VERSION variable
#			to put the version in the right place.  This is used
#			by platforms that need non-standard library names.
#			Examples:  ${VERSION}.so.1.1 on NetBSD, since it needs
#			to have a version after the .so, and ${VERSION}.a
#			on AIX, since the ASCEND shared library needs to have
#			a .a extension whereas shared objects for loadable
#			extensions have a .so extension.  Defaults to
#			${VERSION}${SHLIB_SUFFIX}.
#--------------------------------------------------------------------

# Step 1: set the variable "system" to hold the name and version number
# for the system.  This can usually be done via the "uname" command, but
# there are a few systems, like Next, where this doesn't work.

# Changed this to use the "$host" variable from AC_CANONICAL_HOST

# Step 2: check for existence of -ldl library.  This is needed because
# Linux can use either -ldl or -ldld for dynamic loading.

AC_CHECK_LIB(dl, dlopen, have_dl=yes, have_dl=no)

# Step 3: set configuration options based on system name and version.

ASC_SHARED_LIB_SUFFIX=""
ASC_UNSHARED_LIB_SUFFIX=""
ASC_LIB_VERSIONS_OK=ok
case $host in
    *-aix*)
	SHLIB_CFLAGS=""
	SHLIB_LD="$fullpathsrcdir/ldAix /bin/ld -bhalt:4 -bM:SRE -bE:lib.exp -H512 -T512"
	SHLIB_LD_LIBS='${LIBS}'
	SHLIB_SUFFIX=".so"
	DL_OBJS=""
	DL_LIBS="-lld"
	LD_FLAGS=""
	LD_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'
	ASC_SHARED_LIB_SUFFIX='${VERSION}.a'
	;;
    *-bsdi*)
	SHLIB_CFLAGS=""
	SHLIB_LD="shlicc -r"
	SHLIB_LD_LIBS='${LIBS}'
	SHLIB_SUFFIX=".so"
	DL_OBJS=""
	DL_LIBS="-ldl"
	LD_FLAGS=""
	LD_SEARCH_FLAGS=""
	;;
    *-dgux*)
	SHLIB_CFLAGS="-K PIC"
	SHLIB_LD="cc -G"
	SHLIB_LD_LIBS=""
	SHLIB_SUFFIX=".so"
	DL_OBJS=""
	DL_LIBS="-ldl"
	LD_FLAGS=""
	LD_SEARCH_FLAGS=""
	;;
    *-hpux8*|*-hpux9*|*-hpux10*)
	AC_CHECK_LIB(dld, shl_load, tcl_ok=yes, tcl_ok=no)
	if test "$tcl_ok" = yes; then
	    SHLIB_CFLAGS="+z"
	    SHLIB_LD="ld -b"
	    SHLIB_LD_LIBS=""
	    SHLIB_SUFFIX=".sl"
	    DL_OBJS=""
	    DL_LIBS="-ldld"
	    LD_FLAGS="-Wl,-E"
	    LD_SEARCH_FLAGS='-Wl,+b,${LIB_RUNTIME_DIR}:.'
	fi
	;;
    *-irix4*)
	SHLIB_CFLAGS="-G 0"
	SHLIB_SUFFIX=".a"
	SHLIB_LD="echo tclLdAout $CC \{$SHLIB_CFLAGS\} | `pwd`/tclsh -r -G 0"
	SHLIB_LD_LIBS='${LIBS}'
	DL_OBJS=""
	DL_LIBS=""
	LD_FLAGS="-Wl,-D,08000000"
	LD_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'
	ASC_SHARED_LIB_SUFFIX='${VERSION}.a'
	;;
    *-irix5*|*-irix6.*)
	SHLIB_CFLAGS=""
	SHLIB_LD="ld -shared -rdata_shared"
	SHLIB_LD_LIBS=""
	SHLIB_SUFFIX=".so"
	DL_OBJS=""
	DL_LIBS=""
	LD_FLAGS=""
	LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
	;;
    *-linux*)
	SHLIB_CFLAGS="-fPIC"
	SHLIB_LD_LIBS=""
	SHLIB_SUFFIX=".so"
	if test "$have_dl" = yes; then
	    SHLIB_LD="${CC} -shared"
	    DL_OBJS=""
	    DL_LIBS="-ldl"
	    LD_FLAGS="-rdynamic"
	    LD_SEARCH_FLAGS=""
	else
	    AC_CHECK_HEADER(dld.h, [
		SHLIB_LD="ld -shared"
		DL_OBJS=""
		DL_LIBS="-ldld"
		LD_FLAGS=""
		LD_SEARCH_FLAGS=""])
	fi
	;;
    MP-RAS-02*)
	SHLIB_CFLAGS="-K PIC"
	SHLIB_LD="cc -G"
	SHLIB_LD_LIBS=""
	SHLIB_SUFFIX=".so"
	DL_OBJS=""
	DL_LIBS="-ldl"
	LD_FLAGS=""
	LD_SEARCH_FLAGS=""
	;;
    MP-RAS-*)
	SHLIB_CFLAGS="-K PIC"
	SHLIB_LD="cc -G"
	SHLIB_LD_LIBS=""
	SHLIB_SUFFIX=".so"
	DL_OBJS=""
	DL_LIBS="-ldl"
	LD_FLAGS="-Wl,-Bexport"
	LD_SEARCH_FLAGS=""
	;;
    *-netbsd*|*-freebsd*|*-openbsd*)
	# Not available on all versions:  check for include file.
	AC_CHECK_HEADER(dlfcn.h, [
	    SHLIB_CFLAGS="-fpic"
	    SHLIB_LD="ld -Bshareable -x"
	    SHLIB_LD_LIBS=""
	    SHLIB_SUFFIX=".so"
	    DL_OBJS=""
	    DL_LIBS=""
	    LD_FLAGS=""
	    LD_SEARCH_FLAGS=""
	    ASC_SHARED_LIB_SUFFIX='`echo ${VERSION} | tr -d .`.so.1.0'
	], [
	    SHLIB_CFLAGS=""
	    SHLIB_LD="echo tclLdAout $CC \{$SHLIB_CFLAGS\} | `pwd`/tclsh -r"
	    SHLIB_LD_LIBS='${LIBS}'
	    SHLIB_SUFFIX=".a"
	    DL_OBJS=""
	    DL_LIBS=""
	    LD_FLAGS=""
	    LD_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'
	    ASC_SHARED_LIB_SUFFIX='`echo ${VERSION} | tr -d .`.a'
	])

	# FreeBSD doesn't handle version numbers with dots.

	ASC_UNSHARED_LIB_SUFFIX='`echo ${VERSION} | tr -d .`.a'
	ASC_LIB_VERSIONS_OK=nodots
	;;
    *-nextstep*)
	SHLIB_CFLAGS=""
	SHLIB_LD="cc -nostdlib -r"
	SHLIB_LD_LIBS=""
	SHLIB_SUFFIX=".so"
	DL_OBJS=""
	DL_LIBS=""
	LD_FLAGS=""
	LD_SEARCH_FLAGS=""
	;;
    alpha-dec-osf*)
        # Digital OSF/1
	SHLIB_CFLAGS=""
	SHLIB_LD='ld -shared -expect_unresolved "*"'
	SHLIB_LD_LIBS=""
	SHLIB_SUFFIX=".so"
	DL_OBJS=""
	DL_LIBS=""
	LD_FLAGS=""
	LD_SEARCH_FLAGS='-Wl,-rpath,${LIB_RUNTIME_DIR}'
	;;
    *-riscos*)
	SHLIB_CFLAGS="-G 0"
	SHLIB_LD="echo tclLdAout $CC \{$SHLIB_CFLAGS\} | `pwd`/tclsh -r -G 0"
	SHLIB_LD_LIBS='${LIBS}'
	SHLIB_SUFFIX=".a"
	DL_OBJS=""
	DL_LIBS=""
	LD_FLAGS="-Wl,-D,08000000"
	LD_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'
	;;
    SCO_SV-3.2*)
        # Note, dlopen is available only on SCO 3.2.5 and greater.  However,
        # this test works, since "uname -s" was non-standard in 3.2.4 and
        # below.
	SHLIB_CFLAGS="-Kpic -belf"
	SHLIB_LD="ld -G"
	SHLIB_LD_LIBS=""
	SHLIB_SUFFIX=".so"
	DL_OBJS=""
	DL_LIBS=""
	LD_FLAGS="-belf -Wl,-Bexport"
	LD_SEARCH_FLAGS=""
	;;
    *-sni-sysv*)
	SHLIB_CFLAGS="-K PIC"
	SHLIB_LD="cc -G"
	SHLIB_LD_LIBS=""
	SHLIB_SUFFIX=".so"
	DL_OBJS=""
	DL_LIBS="-ldl"
	LD_FLAGS=""
	LD_SEARCH_FLAGS=""
	;;
    *-sunos4*)
	SHLIB_CFLAGS="-PIC"
	SHLIB_LD="ld"
	SHLIB_LD_LIBS=""
	SHLIB_SUFFIX=".so"
	DL_OBJS=""
	DL_LIBS="-ldl"
	LD_FLAGS=""
	LD_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'

	# SunOS can't handle version numbers with dots in them in library
	# specs, like -ltcl7.5, so use -ltcl75 instead.  Also, it
	# requires an extra version number at the end of .so file names.
	# So, the library has to have a name like libtcl75.so.1.0

	ASC_SHARED_LIB_SUFFIX='`echo ${VERSION} | tr -d .`.so.1.0'
	ASC_UNSHARED_LIB_SUFFIX='`echo ${VERSION} | tr -d .`.a'
	ASC_LIB_VERSIONS_OK=nodots
	;;
    *-solaris*)
	SHLIB_CFLAGS="-KPIC"
	SHLIB_LD="/usr/ccs/bin/ld -G -z text"

	# Note: need the LIBS below, otherwise Tk won't find ASCEND's
	# symbols when dynamically loaded into tclsh.

	SHLIB_LD_LIBS='${LIBS}'
	SHLIB_SUFFIX=".so"
	DL_OBJS=""
	DL_LIBS="-ldl"
	LD_FLAGS=""
	LD_SEARCH_FLAGS='-R ${LIB_RUNTIME_DIR}'
	;;
    *-ultrix4*)
	SHLIB_CFLAGS="-G 0"
	SHLIB_SUFFIX=".a"
	SHLIB_LD="echo tclLdAout $CC \{$SHLIB_CFLAGS\} | `pwd`/tclsh -r -G 0"
	SHLIB_LD_LIBS='${LIBS}'
	DL_OBJS=""
	DL_LIBS=""
	LD_FLAGS="-Wl,-D,08000000"
	LD_SEARCH_FLAGS='-L${LIB_RUNTIME_DIR}'
	;;
    mips-dde-sysv*)
	SHLIB_CFLAGS="-KPIC"
	SHLIB_LD="cc -G"
	SHLIB_LD_LIBS=""
	SHLIB_SUFFIX=".so"
	DL_OBJS=""
	DL_LIBS="-ldl"
	# Some UNIX_SV* systems (unixware 1.1.2 for example) have linkers
	# that don't grok the -Bexport option.  Test that it does.
	hold_ldflags=$LDFLAGS
	AC_MSG_CHECKING([for ld accepts -Bexport flag])
	LDFLAGS="${LDFLAGS} -Wl,-Bexport"
	AC_TRY_LINK(, [int i;], found=yes, found=no)
	LDFLAGS=$hold_ldflags
	AC_MSG_RESULT($found)
	if test "$found" = yes; then
	  LD_FLAGS="-Wl,-Bexport"
	else
	  LD_FLAGS=""
	fi
	LD_SEARCH_FLAGS=""
	;;
esac

dnl >>>>Comment out the rest of the dynamic loading stuff until
dnl >>>>we're actually ready to use it for ASCEND
dnl >>>>
# Step 4: If pseudo-static linking is in use (see K. B. Kenny, "Dynamic
# Loading for Tcl -- What Became of It?".  Proc. 2nd Tcl/Tk Workshop,
# New Orleans, LA, Computerized Processes Unlimited, 1994), then we need
# to determine which of several header files defines the a.out file
# format (a.out.h, sys/exec.h, or sys/exec_aout.h).  At present, we
# support only a file format that is more or less version-7-compatible. 
# In particular,
#	- a.out files must begin with `struct exec'.
#	- the N_TXTOFF on the `struct exec' must compute the seek address
#	  of the text segment
#	- The `struct exec' must contain a_magic, a_text, a_data, a_bss
#	  and a_entry fields.
# The following compilation should succeed if and only if either sys/exec.h
# or a.out.h is usable for the purpose.
#
# Note that the modified COFF format used on MIPS Ultrix 4.x is usable; the
# `struct exec' includes a second header that contains information that
# duplicates the v7 fields that are needed.
dnl >>>>
dnl >>>>if test "x$DL_OBJS" = "xtclLoadAout.o" ; then
dnl >>>>    AC_MSG_CHECKING([sys/exec.h])
dnl >>>>    AC_TRY_COMPILE([#include <sys/exec.h>],[
dnl >>>>	struct exec foo;
dnl >>>>	unsigned long seek;
dnl >>>>	int flag;
dnl >>>>#if defined(__mips) || defined(mips)
dnl >>>>	seek = N_TXTOFF (foo.ex_f, foo.ex_o);
dnl >>>>#else
dnl >>>>	seek = N_TXTOFF (foo);
dnl >>>>#endif
dnl >>>>	flag = (foo.a_magic == OMAGIC);
dnl >>>>	return foo.a_text + foo.a_data + foo.a_bss + foo.a_entry;
dnl >>>>], tcl_ok=usable, tcl_ok=unusable)
dnl >>>>    AC_MSG_RESULT($tcl_ok)
dnl >>>>    if test $tcl_ok = usable; then
dnl >>>>	AC_DEFINE(USE_SYS_EXEC_H)
dnl >>>>    else
dnl >>>>	AC_MSG_CHECKING([a.out.h])
dnl >>>>	AC_TRY_COMPILE([#include <a.out.h>],[
dnl >>>>	    struct exec foo;
dnl >>>>	    unsigned long seek;
dnl >>>>	    int flag;
dnl >>>>#if defined(__mips) || defined(mips)
dnl >>>>	    seek = N_TXTOFF (foo.ex_f, foo.ex_o);
dnl >>>>#else
dnl >>>>	    seek = N_TXTOFF (foo);
dnl >>>>#endif
dnl >>>>	    flag = (foo.a_magic == OMAGIC);
dnl >>>>	    return foo.a_text + foo.a_data + foo.a_bss + foo.a_entry;
dnl >>>>	], tcl_ok=usable, tcl_ok=unusable)
dnl >>>>	AC_MSG_RESULT($tcl_ok)
dnl >>>>	if test $tcl_ok = usable; then
dnl >>>>	    AC_DEFINE(USE_A_OUT_H)
dnl >>>>	else
dnl >>>>	    AC_MSG_CHECKING([sys/exec_aout.h])
dnl >>>>	    AC_TRY_COMPILE([#include <sys/exec_aout.h>],[
dnl >>>>		struct exec foo;
dnl >>>>		unsigned long seek;
dnl >>>>		int flag;
dnl >>>>#if defined(__mips) || defined(mips)
dnl >>>>		seek = N_TXTOFF (foo.ex_f, foo.ex_o);
dnl >>>>#else
dnl >>>>		seek = N_TXTOFF (foo);
dnl >>>>#endif
dnl >>>>		flag = (foo.a_midmag == OMAGIC);
dnl >>>>		return foo.a_text + foo.a_data + foo.a_bss + foo.a_entry;
dnl >>>>	    ], tcl_ok=usable, tcl_ok=unusable)
dnl >>>>	    AC_MSG_RESULT($tcl_ok)
dnl >>>>	    if test $tcl_ok = usable; then
dnl >>>>		AC_DEFINE(USE_SYS_EXEC_AOUT_H)
dnl >>>>	    else
dnl >>>>		DL_OBJS=""
dnl >>>>	    fi
dnl >>>>	fi
dnl >>>>    fi
dnl >>>>fi
dnl >>>>
# Step 5: disable dynamic loading if requested via a command-line switch.
dnl >>>>
dnl >>>>AC_ARG_ENABLE(load,
dnl >>>>    [  --disable-load          disallow dynamic loading and "load" command],
dnl >>>>    [tcl_ok=$enableval], [tcl_ok=yes])
dnl >>>>if test "$tcl_ok" = "no"; then
dnl >>>>    DL_OBJS=""
dnl >>>>fi
dnl >>>>
dnl >>>>if test "x$DL_OBJS" != "x" ; then
dnl >>>>    BUILD_DLTEST="\$(DLTEST_TARGETS)"
dnl >>>>else
dnl >>>>    echo "Can't figure out how to do dynamic loading or shared libraries"
dnl >>>>    echo "on this system."
dnl >>>>    SHLIB_CFLAGS=""
dnl >>>>    SHLIB_LD=""
dnl >>>>    SHLIB_SUFFIX=""
dnl >>>>    DL_OBJS=""
dnl >>>>    DL_LIBS=""
dnl >>>>    LD_FLAGS=""
dnl >>>>    LD_SEARCH_FLAGS=""
dnl >>>>    BUILD_DLTEST=""
dnl >>>>fi
dnl >>>>
dnl >>>># If we're running gcc, then change the C flags for compiling shared
dnl >>>># libraries to the right flags for gcc, instead of those for the
dnl >>>># standard manufacturer compiler.
dnl >>>>
dnl >>>>if test "$DL_OBJS" != "tclLoadNone.o" ; then
dnl >>>>    if test "$CC" = "gcc" -o `$CC -v 2>&1 | grep -c gcc` != "0" ; then
dnl >>>>	case "$host" in
dnl >>>>	    *-aix*)
dnl >>>>		;;
dnl >>>>	    *-bsdi*)
dnl >>>>		;;
dnl >>>>	    *-irix*)
dnl >>>>		;;
dnl >>>>	    *-netbsd*|*-freebsd*|*-openbsd*)
dnl >>>>		;;
dnl >>>>	    *-riscos*)
dnl >>>>		;;
dnl >>>>	    *-ultrix4*)
dnl >>>>		;;
dnl >>>>	    *)
dnl >>>>		SHLIB_CFLAGS="-fPIC"
dnl >>>>		;;
dnl >>>>	esac
dnl >>>>    fi
dnl >>>>fi

#--------------------------------------------------------------------
#	TCL / TK / TK-TABLE
#
#	The user can specify the location of the Tcl and/or Tk
#	libraries using the --with-tcl and --with-tk configure
#	options. Print a warning if the user tries to say
#	--without-tcl since ASCEND requires Tcl/Tk.
#
#	If the user does not specify the location, we need to search
#	for either shared or static versions of the Tcl and Tk
#	libraries, and they must be for version 8.x of Tcl/Tk.
#
#	Check for the static Tcl library in a list of reasonable
#	locations.  If we find it, verify that it is from Tcl 8.0 by
#	looking for the symbol `TclCompileCatchCmd'.  Remember, we
#	need the math library and the dynamic loader library (-ldl or
#	-ldld) to avoid undefined symbols when we test the version of
#	the Tcl library.
#
#	If we can't find a static Tcl8.0 library, try to find a
#	dynamic one by calling AC_CHECK_LIB and looking for the
#	function `TclCompileCatchCmd'.  If we fail, print an error
#	message and exit configure.
#
#	Search for a version of tcl.h that contains `8.' in the
#	TCL_MAJOR_VERSION macro; we look in a list of reasonable
#	locations, then call AC_EGREP_HEADER to look for us.
#
#	Repeat the process for the Tk library; the symbol we want is
#	`Tk_NameOfFont'; remember we need the X library---and all the
#	libraries it needs---as well as the Tcl library to avoid
#	undefined symbols when we test the version of the Tk library.
#
#	The user can use --with-tktable to specify a location for a
#	static version of the Tk-Table library.  If a value is
#	specified, assume it is good and define the cpp macro
#	STATIC_TABLE.
#
#	If a value is not specified, look for libTktable.a; if we
#	find it, assume it works and define the cpp macro
#	STATIC_TABLE.  If we don't find it, assume ASCEND will be
#	able to dynamically load it at run time and tell the user
#	about our assumption.
#--------------------------------------------------------------------
#
#  a list of directories to search for the Tcl/Tk libraries
asc_tcl_library_dirs="
    /usr/local/lib/ascend/lib
    $prefix/lib:$exec_prefix/lib
    $ascpwd/tcl8.0
    $ascpwd/tcl8.0/unix
    $ascpwd/tk8.0
    $ascpwd/tk8.0/unix
    $ascpwd/ascend4/lib
    /lib
    /usr/lib
    /usr/local/lib
    /usr/contributed/lib
    /afs/cs/project/ascend/depot/@sys/lib
"
#  a list of directories to search for the Tcl/Tk include files
asc_tcl_include_dirs="
    /usr/local/lib/ascend/include
    $prefix/include
    $fullpathsrcdir/tcl8.0
    $fullpathsrcdir/tcl8.0/generic
    $fullpathsrcdir/tk8.0
    $fullpathsrcdir/tk8.0/generic
    $fullpathsrcdir/ascend4/include
    $ascpwd/ascend4/include
    /usr/include
    /usr/local/include
    /usr/contributed/include
    /afs/cs/project/ascend/depot/common/include
"
#  a list of directories to search for the TkTable library
asc_tk_table_dirs="
    /usr/local/lib/ascend/lib/Tktable
    $prefix/lib/Tktable
    $exec_prefix/lib/Tktable
    $ascpwd/tkTable1.80
    $ascpwd/ascend4/lib
    $ascpwd/ascend4/lib/Tktable
    /afs/cs/project/ascend/depot/@sys/lib/Tktable
"
#  see if the user gave us the location of the Tcl8.0
#  library and/or header file
#
AC_ARG_WITH(tcl,
    [Location of Tcl, Tk, and tkTable:
  --with-tcl=LIBRARY,HEADER
                          The location of the Tcl8.0 library and/or header
                          For a static Tcl8.0 library, give the full path:
                              --with-tcl='/usr/local/lib/libtcl8.0.a'
                          For a dynamic library, give any -L options required:
                              --with-tcl='-L/usr/local/lib -ltcl8.0'
                          To specify only the header, leave off the library:
                              --with-tcl=',/usr/local/include/tcl.h'] ,
    , [with_tcl=yes])

case "$with_tcl" in
    no)
	#  User specified --without-tcl; this makes no sense,
	#  print a warning and search for it ourselves
        AC_MSG_WARN([Bad option '--without-tcl'
	ASCEND must be compiled with Tcl8.0.])
	with_tcllib=_searching
	with_tclhdr=_searching
        ;;
    yes|,|"")
	#  User didn't give the option or didn't give useful
	#  information, search for it ourselves
	with_tcllib=_searching
	with_tclhdr=_searching
	;;
    ,*)
	#  Only the header was specified.
	with_tcllib=_searching
	TCL_HDR=`echo $with_tcl | sed 's/^,//'`
        ;;
    *,?*)
	#  Both the library and the header were specified
        TCL_LIB=`echo $with_tcl | sed 's/,.*$//'`
	TCL_HDR=`echo $with_tcl | sed 's/^.*,//'`
        ;;
    *)
	#  Only the library was specified
        TCL_LIB=`echo $with_tcl | sed 's/,$//'`
	with_tclhdr=_searching
        ;;
esac

#  try to find a static version of the Tcl8.0 library
#
if test "X$with_tcllib" = X_searching ; then
    AC_PATH_PROGS(TCL_LIB, libtcl8.0.a libtcl80.a libtcl8.3.a, , $asc_tcl_library_dirs)
    if test -z "$TCL_LIB" ; then
        TCL_LIB=_searching
    fi
else
    AC_MSG_RESULT([checking for tcl library... $TCL_LIB])
fi

#  verify the TCL_LIB
if test ! "X$TCL_LIB" = X_searching ; then
    AC_MSG_CHECKING([whether $TCL_LIB is for Tcl8.3])
    asc_libs_orig=$LIBS
    LIBS="$TCL_LIB $X11_LIBRARIES $X11_EXTRA_LIBS $DL_LIBS $MATH_LIBS $LIBS"
    AC_TRY_LINK( , [TclCompileCatchCmd()], , [TCL_LIB=_searching]);
    if test "X$TCL_LIB" = X_searching ; then
        AC_MSG_RESULT(no)
    else
        AC_MSG_RESULT(yes)
    fi
    LIBS=$asc_libs_orig
fi

#  see if the default LPATH can find the Tcl8.0 library
#
if test "X$TCL_LIB" = X_searching ; then
    AC_CHECK_LIB(tcl83, TclCompileCatchCmd, [TCL_LIB="-ltcl83"] , , 
	[$X11_LIBRARIES $X11_EXTRA_LIBS $DL_LIBS $MATH_LIBS])
fi
if test "X$TCL_LIB" = X_searching ; then
    AC_CHECK_LIB(tcl8.3, TclCompileCatchCmd, [TCL_LIB="-ltcl8.3"] , , 
	[$X11_LIBRARIES $X11_EXTRA_LIBS $DL_LIBS $MATH_LIBS])
fi
if test "X$TCL_LIB" = X_searching ; then
    AC_CHECK_LIB(tcl8.0, TclCompileCatchCmd, [TCL_LIB="-ltcl8.0"] , , 
	[$X11_LIBRARIES $X11_EXTRA_LIBS $DL_LIBS $MATH_LIBS])
fi
if test "X$TCL_LIB" = X_searching ; then
    AC_CHECK_LIB(tcl80, TclCompileCatchCmd, [TCL_LIB="-ltcl80"] , , 
	[$X11_LIBRARIES $X11_EXTRA_LIBS $DL_LIBS $MATH_LIBS])
fi
if test "X$TCL_LIB" = X_searching ; then
    AC_CHECK_LIB(tcl, TclCompileCatchCmd, [TCL_LIB="-ltcl"] , , 
	[$X11_LIBRARIES $X11_EXTRA_LIBS $DL_LIBS $MATH_LIBS])
fi

#  give up searching for the Tcl8.0 library
#
if test "X$TCL_LIB" = X_searching ; then
    AC_MSG_ERROR([Cannot find a compatiable Tcl library.
	You must build and install Tcl version 8.3  before you
	can build ASCEND.  If you have installed the correct version
	of Tcl, run configure again with the argument:
		--with-tcl=LIBRARY,HEADER
	where LIBRARY and HEADER are the full paths to the Tcl8.3
	library file and header file, respectively.])
fi

#  see if the user gave us the location of the Tcl8.0 header file
#
if test ! "X$with_tclhdr" = X_searching ; then
    if test ! -f "$TCL_HDR" ; then
	AC_MSG_WARN([user specified Tcl header file, $TCL_HDR, does not exist])
        with_tclhdr=_searching
        TCL_HDR=''
    fi
fi
if test "X$with_tclhdr" = X_searching ; then
    AC_PATH_PROG(TCL_HDR, tcl.h, , $asc_tcl_include_dirs)
    if test -z "$TCL_HDR" ; then
        AC_EGREP_HEADER([TCL_MAJOR_VERSION.*8], tcl.h, [TCL_HDR='tcl.h'], )
    fi
else
    AC_MSG_RESULT([checking for tcl header... $TCL_HDR])
fi
if test -f "$TCL_HDR" ; then
    AC_MSG_CHECKING([whether $TCL_HDR is for version 8])
    echo 'grep TCL_MAJOR_VERSION "$TCL_HDR" 2>&5' 1>&5
    grep_tcl_h=`grep TCL_MAJOR_VERSION "$TCL_HDR" 2>&5`
    echo $grep_tcl_h 1>&5
    case "$grep_tcl_h" in
        *8)
	    AC_MSG_RESULT(yes)
            ;;
        *)
	    AC_MSG_RESULT(no)
	    TCL_HDR=
            ;;
    esac
fi
if test -z "$TCL_HDR" ; then
    AC_MSG_ERROR([Cannot find a compatiable Tcl header file.
	You must build and install Tcl version 8.3 (but not yet 8.4) before you
	can build ASCEND.  If you have installed the correct version
	of Tcl, run configure again with the argument:
		--with-tcl=LIBRARY,HEADER
	where LIBRARY and HEADER are the full paths to the Tcl8.3
	library file and header file, respectively.])
fi
TCL_HDR=`echo $TCL_HDR | sed 's,tcl\.h$,,'`
if test -n "$TCL_HDR" ; then
    TCL_HDR="-I$TCL_HDR"
fi


######  REPEAT FOR TK
#
#  see if the user gave us the location of the Tk8.3
#  library and/or header file
#
AC_ARG_WITH(tk,
    [  --with-tk=LIBRARY,HEADER
                          The location of the Tk8.0 library and/or header
                          For a static Tk8.0 library, give the full path:
                              --with-tk='/usr/local/lib/libtk8.3.a'
                          For a dynamic library, give any -L options required:
                              --with-tk='-L/usr/local/lib -ltk8.3'
                          To specify only the header, leave off the library:
                              --with-tk=',/usr/local/include/tk.h'] ,
    , [with_tk=yes])

case "$with_tk" in
    no)
	#  User specified --without-tk; this makes no sense,
	#  print a warning and search for it ourselves
        AC_MSG_WARN([Bad option '--without-tk'
	ASCEND must be compiled with Tk8.0.])
	with_tklib=_searching
	with_tkhdr=_searching
        ;;
    yes|,|"")
	#  User didn't give the option or didn't give useful
	#  information, search for it ourselves
	with_tklib=_searching
	with_tkhdr=_searching
	;;
    ,*)
	#  Only the header was specified.
	with_tklib=_searching
	TK_HDR=`echo $with_tk | sed 's/^,//'`
        ;;
    *,?*)
	#  Both the library and the header were specified
        TK_LIB=`echo $with_tk | sed 's/,.*$//'`
	TK_HDR=`echo $with_tk | sed 's/^.*,//'`
        ;;
    *)
	#  Only the library was specified
        TK_LIB=`echo $with_tk | sed 's/,$//'`
	with_tkhdr=_searching
        ;;
esac

#  try to find a static version of the Tk8.0 library
#
if test "X$with_tklib" = X_searching ; then
    AC_PATH_PROGS(TK_LIB, libtk8.0.a libtk80.a libtk.a libtk8.3.a, , $asc_tcl_library_dirs)
    if test -z "TK_LIB" ; then
        TK_LIB=_searching
    fi
else
    AC_MSG_RESULT([checking for tk library... $TK_LIB])
fi

#  verify the TK_LIB
#
if test ! "X$TK_LIB" = X_searching ; then
    AC_MSG_CHECKING([whether $TK_LIB is for Tk8.0])
    asc_libs_orig=$LIBS
    LIBS="$TK_LIB $TCL_LIB $X11_LIBRARIES -lX11 $X11_EXTRA_LIBS $DL_LIBS $MATH_LIBS $LIBS"
    AC_TRY_LINK( , [Tk_NameOfFont()], , [TK_LIB=_searching]);
    if test "X$TK_LIB" = X_searching ; then
        AC_MSG_RESULT(no)
    else
        AC_MSG_RESULT(yes)
    fi
    LIBS=$asc_libs_orig
fi

#  see if the default LPATH can find the Tk8.0 library
#
if test "X$TK_LIB" = X_searching ; then
    AC_MSG_RESULT([checking for a dynamically loaded Tk8.0 library])
    AC_CHECK_LIB(tk8.0, Tk_NameOfFont, [TK_LIB="-ltk8.0"] , , 
	[$TCL_LIB $X11_LIBRARIES -lX11 $X11_EXTRA_LIBS $DL_LIBS $MATH_LIBS])
fi
if test "X$TK_LIB" = X_searching ; then
    AC_CHECK_LIB(tk80, Tk_NameOfFont, [TK_LIB="-ltk80"] , , 
	[$TCL_LIB $X11_LIBRARIES -lX11 $X11_EXTRA_LIBS $DL_LIBS $MATH_LIBS])
fi
if test "X$TK_LIB" = X_searching ; then
    AC_CHECK_LIB(tk, Tk_NameOfFont, [TK_LIB="-ltk"] , , 
	[$TCL_LIB $X11_LIBRARIES -lX11 $X11_EXTRA_LIBS $DL_LIBS $MATH_LIBS])
fi

#  give up searching for the Tk8.0 library
#
if test "X$TK_LIB" = X_searching ; then
    AC_MSG_ERROR([Cannot find a compatiable Tk library.
	You must build and install Tk version 8.0 or newer before you
	can build ASCEND.  If you have installed the correct version
	of Tk, run configure again with the argument:
		--with-tk=LIBRARY,HEADER
	where LIBRARY and HEADER are the full paths to the Tk8.0
	library file and header file, respectively.])
fi

#  see if the user gave us the location of the Tk8.0 header file
#
if test ! "X$with_tkhdr" = X_searching ; then
    if test ! -f "$TK_HDR" ; then
	AC_MSG_WARN([user specified Tk header file, $TK_HDR, does not exist])
        with_tkhdr=_searching
        TK_HDR=''
    fi
fi
if test "X$with_tkhdr" = X_searching ; then
    AC_PATH_PROG(TK_HDR, tk.h, , $asc_tcl_include_dirs)
    if test -z "$TK_HDR" ; then
        AC_EGREP_HEADER([TK_MAJOR_VERSION.*8], tk.h, [TK_HDR='tk.h'], )
    fi
else
    AC_MSG_RESULT([checking for tk header... $TK_HDR])
fi
if test -f "$TK_HDR" ; then
    AC_MSG_CHECKING([whether $TK_HDR is for version 8])
    echo 'grep TK_MAJOR_VERSION "$TK_HDR" 2>&5' 1>&5
    grep_tk_h=`grep TK_MAJOR_VERSION "$TK_HDR" 2>&5`
    echo $grep_tk_h 1>&5
    case "$grep_tk_h" in
        *8)
	    AC_MSG_RESULT(yes)
            ;;
        *)
	    AC_MSG_RESULT(no)
            TK_HDR=
            ;;
    esac
fi
if test -z "$TK_HDR" ; then
    AC_MSG_ERROR([Cannot find a compatiable Tk header file.
	You must build and install Tk version 8.0 or newer before you
	can build ASCEND.  If you have installed the correct version
	of Tk, run configure again with the argument:
		--with-tk=LIBRARY,HEADER
	where LIBRARY and HEADER are the full paths to the Tk8.0
	library file and header file, respectively.])
fi
TK_HDR=`echo $TK_HDR | sed 's,tk\.h$,,'`
if test -n "$TK_HDR" ; then
    TK_HDR="-I$TK_HDR"
    if test "X$TCL_HDR" = "X$TK_HDR" ; then
        TK_HDR=
    fi
fi


AC_ARG_WITH(tktable,
    [  --with-tktable=TKTABLE  full path to a TkTable1.3 static library], , )
case "$with_tktable" in
    yes|no|"")
        # search for the table
        AC_PATH_PROG(TKTABLE_LIB, libTktable.a, , $asc_tk_table_dirs)
        ;;
    *)
        # use the user's value
        TKTABLE_LIB="$with_tktable"
        ;;
esac
if test -n "$TKTABLE_LIB" ; then
    HAVE_TKTABLE='-DSTATIC_TKTABLE'
else
    AC_MSG_RESULT(Assuming Tktable will be dynamically linked into ASCEND)
fi

AC_ARG_WITH(wish,
    [  --with-wish=/path/to/bin/wish
                          The location of the wish shell executable matching 
                          the tcl/tk given by --with-tk and --with-tcl.
                          X11 must be running during configure.  ] ,
    , [with_wish=no])
case "$with_wish" in
    yes|no|"")
        AC_MSG_RESULT([--with-wish not specified.
        Setting env vars TCL_LIBRARY, TK_LIBRARY may be needed to run.])
        ;;
    *)
        AC_MSG_CHECKING([wish for tcl_library,tklibrary])
        ASC_TK_LIBRARY=`config/wishvar tk_library $with_wish`
        ASC_TCL_LIBRARY=`config/wishvar tcl_library $with_wish`
	AC_MSG_RESULT([ $ASC_TCL_LIBRARY , $ASC_TK_LIBRARY])
        ;;
esac


#--------------------------------------------------------------------
#	FORTRAN
#
#	ASCEND uses the LSOD integrator and is capable of working
#	with CONOPT and with MINOS.  These libraries are written in
#	Fortran; to use them, configure needs to find a Fortran
#	compiler and the necessary Fortran libraries (e.g.,
#	libF77.a).  LSOD, CONOPT, and MINOS also require the BLAS and
#	LINPACK libraries to avoid undefined symbols at link time.
#
#	The builder can specify the location of
#	* the Fortran compiler and libraries using
#	  --with-fortran=<compiler>,<libraries>
#	* the BLAS library using
#	  --with-blas=<blas-library>
#	* the LINPACK library using
#	  --with-linpack=<linpack-library>
#	* the LSOD library using
#	  --with-blas=<lsod-library>
#	* the CONOPT library using
#	  --with-conopt=<conopt-library>
#	* the MINOS library using
#	  --with-minos=<minos-library>   <===currently disabled
#	The builder can disable some parts of the fortran build using
#	the --without-<package> configure option.
#
#	If the user does not specify the locations of the compiler
#	and the libraries and does not disable them, configure
#	attempts to find them.
#
#	Building with LSOD, CONOPT, and/or MINOS is further
#	complicated by the dependencies between these libraries and
#	the BLAS and LINPACK libraries.
#
#	If we cannot find a Fortran compiler, we disable all Fortran
#	code (LSOD, CONOPT, and MINOS).  Otherwise, look for the
#	Fortran libraries (e.g., libF77.a) based on the type of
#	machine we are compiling on.
#
#	If Fortran is enabled, we need to find a compiled BLAS
#	library or source code.  Check for the machine's libblas.a
#	and ASCEND's libascblas.a; if those fail, check for the
#	libascblas.a source code; if that fails, we disable all
#	Fortran (LSOD, CONOPT, MINOS).
#
#	If Fortran is enabled, we need to find a compiled LINPACK
#	library or source code.  Check for the machine's liblpak.a
#	and ASCEND's libasclpak.a; if those fail, check for the
#	libasclpak.a source code; if that fails, we disable all
#	Fortran (LSOD, CONOPT, MINOS).
#
#	If Fortran is enabled, we try to find a compiled LSOD library
#	or source code.  Check for a libinteg.a; if that fails, check
#	for the libinteg.a source code; if that fails, we disable
#	LSOD.  If we find LSOD, define STATIC_LSOD.
#
#	If Fortran is enabled, we try to find a compiled OPTSQP
#	library or source code.  Check for a librsqp.a; if that fails,
#	check for the librsqp.a source code; if that fails, we disable
#	OPTSQP.  If we find RSQP, define STATIC_OPTSQP.
#
#	If Fortran is enabled, we try to find a compiled CONOPT
#	library.  Check for a libconsub.a; if that fails, we disable
#	CONOPT.  If we find CONOPT, define STATIC_CONOPT; if not,
#	tell the user where to find CONOPT using the contact
#	information from the nonlinear programming FAQ:
#    http://www.mcs.anl.gov/home/otc/Guide/faq/nonlinear-programming-faq.html
#
#	If Fortran is enabled, we try to find a compiled MINOS
#	library or source code.  Check for a libminos54.a; if that
#	fails, check for the libminos54.a source code; if that fails,
#	we disable MINOS.  If we find MINOS, define STATIC_MINOS; if
#	not, tell the user where to find MINOS using the contact
#	information from the nonlinear programming FAQ:
#    http://www.mcs.anl.gov/home/otc/Guide/faq/nonlinear-programming-faq.html
#--------------------------------------------------------------------
#
#  the list of directories to search for the fortran compiler
asc_f77_prog_dirs="$PATH:/usr/lang:/opt/SUNWspro/bin"
#
#  the list of directories to search for the required fortran libraries
asc_f77_support_dirs="
    /lib
    /usr/lib
    /usr/local/lib
    /usr/contributed/lib
    /usr/local/lib/ascend/lib
    $ascpwd/blas
    $ascpwd/linpack
    $ascpwd/lsod
    $ascpwd/conopt
    $ascpwd/rsqp
    $ascpwd/minos
    $ascpwd/ascend4/archive
    /afs/cs/project/ascend/depot/@sys/lib
    /afs/cs/project/ascend/depot/build/obj/conopt
"
#
AC_ARG_WITH(fortran,
    [Fortran compiler and libraries:
  --with-fortran=F77,F77LIBS
                          The location of your Fortran compiler and its
                          library files.  For example, under SunOS:
                             --with-fortran='f77,-L/usr/lang/lib -lF77 -lM77'
                          To specify only the compiler or libraries, leave off
                          whatever is not needed:
                              --with-fortran=',-L/usr/lang/lib -lF77 -lM77'
                          Use '--without-fortran' to not link against
                          any Fortran libraries],
    , [with_fortran=yes])
case "$with_fortran" in
    no)
	#  The user disabled all fortran using
	#  the --without-fortran option.
        F77=
        F77LIBS=
        with_f77=no
	with_f77libs=no
        ;;
    yes|,|"")
	#  The user didn't pass in the --with-fortran option
	#  or didn't give us any useful information.  We do
	#  the search ourselves.
        with_f77=_searching
	with_f77libs=_searching
        ;;
    ,*)
	#  The user passed in the libraries, search for the
	#  compiler ourselves.
	with_f77=_searching
	F77LIBS=`echo $with_fortran | sed 's/^,//'`
        echo "user gave F77LIBS=$F77LIBS"
        ;;
    *,?*)
	#  The user passed in both the compiler and the
	#  libraries.
	F77=`echo $with_fortran | sed s'/,.*$//'`
	F77LIBS=`echo $with_fortran | sed 's/^.*,//'`
        echo "user gave F77=$F77"
        echo "user gave F77LIBS=$F77LIBS"
	;;
    *)
	#  The user passed in the compiler; search for the
	#  libraries ourselves.
	F77=`echo $with_fortran | sed s'/,$//'`
	with_f77libs=_searching
        echo "user gave F77=$F77"
	;;
esac

if test "X$with_f77" = X_searching ; then
    #  Search for the fortran compiler; print a warning if we can't
    #  find it and disable all fortran.
    AC_PATH_PROGS(F77, f77 xlf g77, , $asc_f77_prog_dirs)
    if test -z "$F77" ; then
        with_fortran=no
        with_f77libs=no
        AC_MSG_WARN([Cannot find your Fortran compiler.  Building ASCEND
	without integration, MINOS, and CONOPT support.  To bulid ASCEND with
	Fortran support, run configure with the option
		--with-fortran=F77,F77LIBS
	where F77 is the full path to your Fortran compiler and F77LIBS are
	its related libraries])
    fi
fi

if test "X$with_f77libs" = X_searching ; then
    #  We found a compiler, now search for the fortran libraries
    #  based on the system type.
    AC_MSG_RESULT([checking for fortran libraries based on system type])
    case "$host" in
        alpha-dec-osf*)
            AC_CHECK_LIB(for, for_lle, [F77LIBS="$F77LIBS -lfor"], , $F77LIBS)
            AC_CHECK_LIB(ots, _OtsFill, [F77LIBS="$F77LIBS -lots"], , $F77LIBS)
            AC_CHECK_LIB(Ufor, etime_, [F77LIBS="$F77LIBS -lUfor"], , $F77LIBS)
            ;;
        mips-dec-ultrix*)
            AC_CHECK_LIB(for, for_lle, [F77LIBS="$F77LIBS -lfor"], , $F77LIBS)
            ;;
        hppa1.1-hp-hpux*)
            AC_CHECK_LIB(cl, FTN_QATAN, [F77LIBS="$F77LIBS -lcl"], , $F77LIBS)
            ;;
        *-ibm-aix*)
            # need to add -lc before -lxlf on AIX to
            # avoid getting the wrong getenv
            F77LIBS="-lc $F77LIBS"
            AC_CHECK_LIB(xlf, _xldabs, [F77LIBS="$F77LIBS -lxlf"], , $F77LIBS)
            AC_CHECK_LIB(xlfutil, srand_, [F77LIBS="$F77LIBS -lxlfutil"], ,
                $F77LIBS)
            AC_CHECK_LIB(xlf90, printf,
                [F77LIBS="$F77LIBS -lxlf90"], , $F77LIBS)
            ;;
	*-linux-*)
	    AC_CHECK_LIB(f2c, pow_dd, [F77LIBS="$F77LIBS -lf2c"], , $F77LIBS)
	    AC_CHECK_LIB(g2c, pow_dd, [F77LIBS="$F77LIBS -lg2c"], , $F77LIBS)
	    ;;
        sparc-sun-solaris*)
            if test -n "$GCC" ; then
                F77LIBS="-L/opt/SUNWspro/lib -R/opt/SUNWspro/lib"
            fi
            AC_CHECK_LIB(sunmath, d_sqrt_, [MATH_LIBS="-lsunmath $MATH_LIBS"])
            AC_CHECK_LIB(F77, f77_init,
                [F77LIBS="$F77LIBS -lF77"], , $F77LIBS $MATH_LIBS)
            AC_CHECK_LIB(M77, inmax_, 
                [F77LIBS="$F77LIBS -lM77"], , $F77LIBS $MATH_LIBS)
            ;;
        sparc-sun-sunos4*)
            if test -n "$GCC" ; then
                F77LIBS="-L/usr/lang/lib"
            fi
            AC_CHECK_LIB(F77, f77_init, [F77LIBS="$F77LIBS -lF77"], , $F77LIBS)
            AC_CHECK_LIB(M77, inmax_, [F77LIBS="$F77LIBS -lM77"], , $F77LIBS)
            ;;
        mips-sgi-irix*)
            AC_CHECK_LIB(F77, s_copy, [F77LIBS="$F77LIBS -lF77"], , $F77LIBS)
            AC_CHECK_LIB(I77, f_exit, [F77LIBS="$F77LIBS -lI77"], , $F77LIBS)
            AC_CHECK_LIB(isam, mkidxname, 
                [F77LIBS="$F77LIBS -lisam"], , $F77LIBS)
            ;;
        *)
            AC_CHECK_LIB(F77,  printf, [F77LIBS="$F77LIBS -lF77"],  , $F77LIBS)
            AC_CHECK_LIB(M77,  printf, [F77LIBS="$F77LIBS -lM77"],  , $F77LIBS)
	    AC_CHECK_LIB(f2c,  pow_dd, [F77LIBS="$F77LIBS -lf2c"],  , $F77LIBS)
            AC_CHECK_LIB(f77,  printf, [F77LIBS="$F77LIBS -lf77"],  , $F77LIBS)
            AC_CHECK_LIB(for,  printf, [F77LIBS="$F77LIBS -lfor"],  , $F77LIBS)
            AC_CHECK_LIB(ots,  printf, [F77LIBS="$F77LIBS -lots"],  , $F77LIBS)
            AC_CHECK_LIB(Ufor, printf, [F77LIBS="$F77LIBS -lUfor"], , $F77LIBS)
            ;;
    esac
fi

#  asc_subdirs are the extra fortran subdirectories we have to visit
#  to build the fortran libraries.  Initialize it to empty here.
asc_subdirs=''

#  Initialize the blas variables
make_blaslib=''

AC_ARG_WITH(blas,
    [  --with-blas=BLASLIB     The full path to the blas library.
                          Use '--with-blas=build' to build the blas library
                          from the sources that come with the distribution.],
    , [with_blas=yes] )
case "$with_fortran$with_blas" in
    no*)
	#  Fortran is disabled; ignore this option (if present)
	BLASLIB=
        ;;
    *no)
	#  It is an error if the user chooses to build without
	#  the BLAS library if Fortran is enabled.
        AC_MSG_ERROR([Bad option '--without-blas'
	To support Fortran calls, ASCEND must be compiled with a blas library])
        ;;
    *build)
	#  Fortran is enabled and the user specified --with-blas=build
	#  For a search for BLAS source code and tell the Makefile
	#  to build it; useful for testing configure.
        blas_src_file="$srcdir/blas/dcopy.f"
        AC_MSG_CHECKING([for blas source file $blas_src_file ])
        if test -f $blas_src_file ; then
            AC_MSG_RESULT(yes)
            BLASLIB="$ascpwd/ascend4/archive/libascblas.a"
	    make_blaslib='make-blaslib'
	    blaslib_makefile="blas/Makefile"
            asc_subdirs="$asc_subdirs ../blas"
        else
            AC_MSG_RESULT(no)
            AC_MSG_ERROR([User specified '--with-blas=build' but
        configure cannot find the blas source file $blas_src_file])
        fi
        ;;
    *yes)
	#  Fortran in enabled and the user didn't give the --with-blas
	#  option or didn't give the library's location.
	#  Search for a compiled libblas.a or libascblas.a; if that
	#  fails, look for BLAS source code; if that also fails,
	#  disable all Fortran and print a warning.
        AC_PATH_PROGS(BLASLIB, libblas.a libascblas.a, , $asc_f77_support_dirs)
        blas_src_file="$srcdir/blas/dcopy.f"
        if test -z "$BLASLIB" -a -n "$blas_src_file" ; then
            AC_MSG_CHECKING([for blas source file $blas_src_file ])
            if test -f $blas_src_file ; then
                AC_MSG_RESULT(yes)
        	BLASLIB="$ascpwd/ascend4/archive/libascblas.a"
	        make_blaslib='make-blaslib'
	        blaslib_makefile="blas/Makefile"
        	asc_subdirs="$asc_subdirs ../blas"
            else
                AC_MSG_RESULT(no)
            fi
        fi
        if test -z "$BLASLIB" ; then
	    with_fortran=no
            AC_MSG_WARN([Cannot find libblas.a, libascblas.a, nor blas
	source code.  Building ASCEND without integration, MINOS, and CONOPT
	support.  To specify a specific location for the blas library, run
	configure again with the argument:
		--with-blas=BLASLIB
	where BLASLIB is the full path to the blas library file.])
        fi
	;;
    *)
	#  The user gave us --with-blas=BLASLIB, use that as the
	#  location of the BLAS library.
	BLASLIB="$with_blas"
	;;
esac


#  Initialize the linpack variables
make_lpaklib=''

AC_ARG_WITH(linpack,
    [  --with-linpack=LPAKLIB  The full path to the linpack library.
                          Use '--with-linpack=build' to build the library
                          from the sources that come with the distribution.],
    , [with_linpack=yes] )
case "$with_fortran$with_linpack" in
    no*)
	#  Fortran is disabled; ignore this option (if present)
	LPAKLIB=
        ;;
    *no)
	#  It is an error if the user chooses to build without
	#  the LINPACK library if Fortran is enabled.
        AC_MSG_ERROR([Bad option '--without-linpack'
	To support Fortran calls, ASCEND must be compiled with a
	linpack library.])
        ;;
    *build)
	#  Fortran is enabled and the user specified --with-linpack=build
	#  For a search for LINPACK source code and tell the Makefile
	#  to build it; useful for testing configure.
        lpak_src_file="$srcdir/linpack/d1mach.f"
        AC_MSG_CHECKING([for linpack source file $lpak_src_file ])
        if test -f $lpak_src_file ; then
            AC_MSG_RESULT(yes)
            LPAKLIB="$ascpwd/ascend4/archive/libasclpak.a"
	    make_lpaklib='make-lpaklib'
	    lpaklib_makefile="linpack/Makefile"
            asc_subdirs="$asc_subdirs ../linpack"
        else
            AC_MSG_RESULT(no)
            AC_MSG_ERROR([User specified '--with-linpack=build' but
        configure cannot find the linpack source file $lpak_src_file])
        fi
        ;;
    *yes)
	#  Fortran in enabled and the user didn't give the --with-linpack
	#  option or didn't give the library's location.
	#  Search for a compiled liblpak.a or libasclpak.a; if that
	#  fails, look for LINPACK source code; if that also fails,
	#  disable all Fortran and print a warning.
        AC_PATH_PROGS(LPAKLIB, liblpak.a libasclpak.a, , $asc_f77_support_dirs)
        lpak_src_file="$srcdir/linpack/d1mach.f"
        if test -z "$LPAKLIB" -a -n "$lpak_src_file" ; then
            AC_MSG_CHECKING([for linpack source file $lpak_src_file ])
            if test -f $lpak_src_file ; then
                AC_MSG_RESULT(yes)
        	LPAKLIB="$ascpwd/ascend4/archive/libasclpak.a"
	        make_lpaklib='make-lpaklib'
	        lpaklib_makefile="linpack/Makefile"
        	asc_subdirs="$asc_subdirs ../linpack"
            else
                AC_MSG_RESULT(no)
            fi
        fi
        if test -z "$LPAKLIB" ; then
	    with_fortran=no
            AC_MSG_WARN([Cannot find liblpak.a, libasclpak.a, nor linpack
	source code.  Building ASCEND without integration, MINOS, and CONOPT
	support.  To specify a specific location for the linpack library, run
	configure again with the argument:
		--with-linpack=LPAKLIB
	where LPAKLIB is the full path to the linpack library file.])
        fi
	;;
    *)
	#  The user gave us --with-linkpack=LINKPACKLIB, use that
	#  as the location of the LINKPACK library.
	LPAKLIB="$with_linpack"
	;;
esac


#  Initialize the lsod variables
make_lsodlib=''
HAVE_LSOD=''

AC_ARG_WITH(lsod,
    [  --with-lsod=LSODLIB     The full path to the lsod library.
                          Use '--with-lsod=build' to build the lsod library
                          from the sources that come with the distribution.],
    , [with_lsod=yes] )
case "$with_fortran$with_lsod" in
    no*)
	#  Fortran is disabled; ignore this option (if present)
	LSODLIB=
	with_lsod=no
        ;;
    *no)
	#  Fortran is enabled but the user specified --without-lsod
	LSODLIB=
	;;
    *build)
	#  Fortran is enabled and the user specified --with-lsod=build
	#  For a search for LSOD source code and tell the Makefile
	#  to build it; useful for testing configure.
        lsod_src_file="$srcdir/lsod/lsode.f"
        AC_MSG_CHECKING([for lsod source file $lsod_src_file ])
        if test -f $lsod_src_file ; then
            AC_MSG_RESULT(yes)
            LSODLIB="$ascpwd/ascend4/archive/libinteg.a"
	    make_lsodlib='make-lsodlib'
	    lsodlib_makefile="lsod/Makefile"
            asc_subdirs="$asc_subdirs ../lsod"
            HAVE_LSOD='-DSTATIC_LSOD'
        else
            AC_MSG_RESULT(no)
            AC_MSG_ERROR([User specified '--with-lsod=build' but
        configure cannot find the lsod source file $lsod_src_file])
        fi
        ;;
    *yes)
	#  Fortran in enabled and the user didn't give the --with-lsod
	#  option or didn't give the library's location.
	#  Search for a compiled libinteg.a; if that fails, look
	#  for LSOD source code; if that also fails, disable LSOD
	#  and print a warning.
        AC_PATH_PROGS(LSODLIB, libinteg.a libasclsod.a, , $asc_f77_support_dirs)
        lsod_src_file="$srcdir/lsod/lsode.f"
        if test -z "$LSODLIB" -a -n "$lsod_src_file" ; then
            AC_MSG_CHECKING([for lsod source file $lsod_src_file ])
            if test -f $lsod_src_file ; then
                AC_MSG_RESULT(yes)
        	LSODLIB="$ascpwd/ascend4/archive/libinteg.a"
	        make_lsodlib='make-lsodlib'
	        lsodlib_makefile="lsod/Makefile"
        	asc_subdirs="$asc_subdirs ../lsod"
            else
                AC_MSG_RESULT(no)
            fi
        fi
        if test -z "$LSODLIB" ; then
	    with_lsod=no
            AC_MSG_WARN([Cannot find libinteg.a nor the lsod
	source code.  Building ASCEND without integration
	support.  To specify a specific location for the lsod library, run
	configure again with the argument:
		--with-lsod=LSODLIB
	where LSODLIB is the full path to the lsod integration library file.])
	else
	    HAVE_LSOD='-DSTATIC_LSOD'
        fi
	;;
    *)
	#  The user gave us --with-lsod=LSODLIB, use that as the
	#  location of the LSOD library and define -DSTATIC_LSOD.
	LSODLIB="$with_lsod"
	HAVE_LSOD='-DSTATIC_LSOD'
	;;
esac


#  Initialize the optsqp/rsqp variables
make_rsqplib=''
HAVE_OPTSQP=''
OPTSQPLIB=''

dnl >>>>  Commenting out OPTSQP support until we get a working OPT from Dave
dnl >>>>AC_ARG_WITH(rsqp,
dnl >>>>    [  --with-rsqp=OPTSQPLIB   The full path to the rsqp library.
dnl >>>>                          Use '--with-rsqp=build' to build the rsqp library
dnl >>>>                          from the sources that come with the distribution.],
dnl >>>>    , [with_rsqp=yes] )
dnl >>>>case "$with_fortran$with_rsqp" in
dnl >>>>    no*)
dnl >>>>	#  Fortran is disabled; ignore this option (if present)
dnl >>>>	OPTSQPLIB=
dnl >>>>	with_rsqp=no
dnl >>>>        ;;
dnl >>>>    *no)
dnl >>>>	#  Fortran is enabled but the user specified --without-rsqp
dnl >>>>	OPTSQPLIB=
dnl >>>>	;;
dnl >>>>    *build)
dnl >>>>	#  Fortran is enabled and the user specified --with-rsqp=build
dnl >>>>	#  For a search for OPTSQP source code and tell the Makefile
dnl >>>>	#  to build it; useful for testing configure.
dnl >>>>        rsqp_src_file="$srcdir/rsqp/shared/OPT.DAT"
dnl >>>>        AC_MSG_CHECKING([for rsqp source file $rsqp_src_file ])
dnl >>>>        if test -f $rsqp_src_file ; then
dnl >>>>            AC_MSG_RESULT(yes)
dnl >>>>            OPTSQPLIB="$ascpwd/ascend4/archive/librsqp.a"
dnl >>>>	    make_rsqplib='make-rsqplib'
dnl >>>>	    rsqplib_makefile='rsqp/Makefile
dnl >>>>                              rsqp/QPIP/Makefile
dnl >>>>                              rsqp/hsl/Makefile
dnl >>>>                              rsqp/rSQP/Makefile'
dnl >>>>            asc_subdirs="$asc_subdirs ../rsqp"
dnl >>>>            HAVE_OPTSQP='-DSTATIC_OPTSQP'
dnl >>>>        else
dnl >>>>            AC_MSG_RESULT(no)
dnl >>>>            AC_MSG_ERROR([User specified '--with-rsqp=build' but
dnl >>>>        configure cannot find the rsqp source file $rsqp_src_file])
dnl >>>>        fi
dnl >>>>        ;;
dnl >>>>    *yes)
dnl >>>>	#  Fortran in enabled and the user didn't give the --with-rsqp
dnl >>>>	#  option or didn't give the library's location.
dnl >>>>	#  Search for a compiled librsqp.a; if that fails, look
dnl >>>>	#  for OPTSQP source code; if that also fails, disable OPTSQP
dnl >>>>	#  and print a warning.
dnl >>>>        AC_PATH_PROGS(OPTSQPLIB, librsqp.a , , $asc_f77_support_dirs)
dnl >>>>        rsqp_src_file="$srcdir/rsqp/shared/OPT.DAT"
dnl >>>>        if test -z "$OPTSQPLIB" -a -n "$rsqp_src_file" ; then
dnl >>>>            AC_MSG_CHECKING([for rsqp source file $rsqp_src_file ])
dnl >>>>            if test -f $rsqp_src_file ; then
dnl >>>>                AC_MSG_RESULT(yes)
dnl >>>>        	OPTSQPLIB="$ascpwd/ascend4/archive/librsqp.a"
dnl >>>>	        make_rsqplib='make-rsqplib'
dnl >>>>	        rsqplib_makefile='rsqp/Makefile
dnl >>>>                                  rsqp/QPIP/Makefile
dnl >>>>                                  rsqp/hsl/Makefile
dnl >>>>                                  rsqp/rSQP/Makefile'
dnl >>>>        	asc_subdirs="$asc_subdirs ../rsqp"
dnl >>>>            else
dnl >>>>                AC_MSG_RESULT(no)
dnl >>>>            fi
dnl >>>>        fi
dnl >>>>        if test -z "$OPTSQPLIB" ; then
dnl >>>>	    with_rsqp=no
dnl >>>>            AC_MSG_WARN([Cannot find librsqp.a nor the rsqp
dnl >>>>	source code.  Building ASCEND without SQP
dnl >>>>	support.  To specify a specific location for the rsqp library, run
dnl >>>>	configure again with the argument:
dnl >>>>		--with-rsqp=OPTSQPLIB
dnl >>>>	where OPTSQPLIB is the full path to the rsqp integration library file.])
dnl >>>>	else
dnl >>>>	    HAVE_OPTSQP='-DSTATIC_OPTSQP'
dnl >>>>        fi
dnl >>>>	;;
dnl >>>>    *)
dnl >>>>	#  The user gave us --with-rsqp=OPTSQPLIB, use that as the
dnl >>>>	#  location of the OPTSQP library and define -DSTATIC_OPTSQP.
dnl >>>>	OPTSQPLIB="$with_rsqp"
dnl >>>>	HAVE_OPTSQP='-DSTATIC_OPTSQP'
dnl >>>>	;;
dnl >>>>esac


#  Initialize the conopt variables
make_conoptlib=''
HAVE_CONOPT=''

AC_ARG_WITH(conopt,
    [  --with-conopt=CONOPTLIB The full path to the conopt library.],
    , [with_conopt=yes] )
case "$with_fortran$with_conopt" in
    no*)
	#  Fortran is disabled; ignore this option (if present)
	CONOPTLIB=
	with_copopt=no
        ;;
    *no)
	#  Fortran is enabled but the user specified --without-conopt
	CONOPTLIB=
	;;
    *yes)
	#  Fortran in enabled and the user didn't give the --with-conopt
	#  option or didn't give the library's location.
	#  Search for a compiled libconsub.a; if that fails,
	#  disable CONOPT and print a warning.
        AC_PATH_PROGS(CONOPTLIB, libconsub.a, , $asc_f77_support_dirs)
	# Since conopt_src_file is empty, we don't search for conopt
	# source code.
        conopt_src_file=""
        if test -z "$CONOPTLIB" -a -n "$conopt_src_file" ; then
            AC_MSG_CHECKING([for conopt source file $conopt_src_file ])
            if test -f $conopt_src_file ; then
                AC_MSG_RESULT(yes)
        	CONOPTLIB="$ascpwd/ascend4/archive/libconsub.a"
	        make_conoptlib='make-conoptlib'
	        conoptlib_makefile="conopt/Makefile"
        	asc_subdirs="$asc_subdirs ../conopt"
            else
                AC_MSG_RESULT(no)
            fi
        fi
        if test -z "$CONOPTLIB" ; then
	    with_conopt=no
            AC_MSG_WARN([Cannot find libconsub.a nor conopt
	source code.  Building ASCEND without CONOPT
	support.  To specify a specific location for the conopt library, run
	configure again with the argument:
		--with-conopt=CONOPTLIB
	where CONOPTLIB is the full path to the conopt library file.
	CONOPT is proprietary and is distributed by:
	Arne Drud   +45 44 49 03 23   adrud@arki.dk])
	else
	    HAVE_CONOPT='-DSTATIC_CONOPT'
        fi
	;;
    *)
	#  The user gave us --with-conopt=CONOPTLIB, use that as the
	#  location of the CONOPT library and define -DSTATIC_CONOPT.
	CONOPTLIB="$with_conopt"
	HAVE_CONOPT='-DSTATIC_CONOPT'
	;;
esac


#  Initialize the minos variables
make_minoslib=''
HAVE_MINOS=''
MINOSLIB=''

dnl >>>>  Commenting out MINOS support until ASCEND's solver/slv1.c is fixed
dnl >>>>AC_ARG_WITH(minos,
dnl >>>>    [  --with-minos=MINOSLIB   The full path to the minos library.],
dnl >>>>    , [with_minos=yes] )
dnl >>>>case "$with_fortran$with_minos" in
dnl >>>>    no*)
dnl >>>>	#  Fortran is disabled; ignore this option (if present)
dnl >>>>	MINOSLIB=
dnl >>>>	with_minos=no
dnl >>>>        ;;
dnl >>>>    *no)
dnl >>>>	#  Fortran is enabled but the user specified --without-lsod
dnl >>>>	MINOSLIB=
dnl >>>>	;;
dnl >>>>    *yes)
dnl >>>>	#  Fortran in enabled and the user didn't give the --with-minos
dnl >>>>	#  option or didn't give the library's location.
dnl >>>>	#  Search for a compiled libminos54.a; if that fails, look
dnl >>>>	#  for MINOS source code; if that also fails, disable MINOS
dnl >>>>	#  and print a warning.
dnl >>>>        AC_PATH_PROGS(MINOSLIB, libminos54.a, , $asc_f77_support_dirs)
dnl >>>>        minos_src_file="$srcdir/minos54/miascend.f"
dnl >>>>        if test -z "$MINOSLIB" -a -n "$minos_src_file" ; then
dnl >>>>            AC_MSG_CHECKING([for minos source file $minos_src_file ])
dnl >>>>            if test -f $minos_src_file ; then
dnl >>>>                AC_MSG_RESULT(yes)
dnl >>>>        	MINOSLIB="$ascpwd/ascend4/archive/libminos54.a"
dnl >>>>	        make_minoslib='make-minoslib'
dnl >>>>	        minoslib_makefile="minos54/Makefile"
dnl >>>>        	asc_subdirs="$asc_subdirs ../minos54"
dnl >>>>            else
dnl >>>>                AC_MSG_RESULT(no)
dnl >>>>            fi
dnl >>>>        fi
dnl >>>>        if test -z "$MINOSLIB" ; then
dnl >>>>	    with_minos=no
dnl >>>>            AC_MSG_WARN([Cannot find libminos54.a nor minos
dnl >>>>	source code.  Building ASCEND without MINOS
dnl >>>>	support.  To specify a specific location for the minos library,
dnl >>>>	run configure again with the argument:
dnl >>>>		--with-minos=MINOSLIB
dnl >>>>	where MINOSLIB is the full path to the minos library file.
dnl >>>>	MINOS is proprietary and is distributed by:
dnl >>>>	Stanford Business Software, Inc.;
dnl >>>>	2672 Bayshore Parkway, Suite 304; Mountain View, CA 94043
dnl >>>>	415-962-8719; mike@sol-michael.stanford.edu])
dnl >>>>	else
dnl >>>>	    HAVE_MINOS='-DSTATIC_MINOS'
dnl >>>>        fi
dnl >>>>	;;
dnl >>>>    *)
dnl >>>>	#  The user gave us --with-minos=MINOSLIB, use that as the
dnl >>>>	#  location of the MINOS library and define -DSTATIC_MINOS.
dnl >>>>	MINOSLIB="$with_minos"
dnl >>>>	HAVE_MINOS='-DSTATIC_MINOS'
dnl >>>>	;;
dnl >>>>esac


#--------------------------------------------------------------------
#	Other trees which may or may not be present.  If present,
#	generate the Makefiles in the tree unless the user passes in
#	a --without-<package> argument.
#
#	Valid <package> values are: TK, models, help
#
#	We could have `configure' do this for us via
#	AC_CONFIG_SUBDIRS, but `configure' scripts in the trees can
#	only be one directory removed from this configure script.
#	For example, it would be nice to have `models' under
#	`ascend4', but `configure' doesn't like `ascend4/models' as
#	an argument to AC_CONFIG_SUBDIRS.
#
#	To get around this problem, we do things by hand. :-)
#
#	If the user gives a --without-<package> argument, we have
#	nothing to do for that package.
#
#	Otherwise,
#	* Set `subdir_file_exists' to a file that should exist in the
#	  subtree---this is how we know that the subtree is really
#	  there.
#	* Set `subdir_locations' to the list of locations, relative
#	  to this configure script, where the subtree may live.
#	* Set `subdir_output' to the list of makefiles to generate;
#	  the variable `subdir_root' in this list will be replaced
#	  with the correct value from `subdir_locations'.
#
#	To see which (if any) of the values in `subdir_locations' is
#	the correct one, we set `subdir_root' to each value in
#	`subdir_locations' and check for the existence of
#	$fullpathsrcdir/$subdir_root/$subdir_file_exists, where
#	$fullpathsrcdir is the full path to the source directory.  If
#	that file exists, we
#	* Set <package>_dir_root to ../$subdir_root.  The "../" is
#	  needed since this value is used in the `ascend4' directory
#	  and $subdir_root is relative to the parent of `ascend4'.
#	* Substitute the value of $subdir_root into `subdir_output'
#	  and set the result to <package>_makefiles: the list of
#	  Makefiles for configure to generate.
#	* Each package needs to be able to find its way back to
#	  ascend4/ConfigAscend; it needs to go back up the tree
#	  however many levels deep it is---i.e., `foo/bar/baz' should
#	  become `../../..' and this does it: sed 's,[^/][^/]*,..,g'
#	  but we need to quote the [] from m4, so we get this bizarre
#	  thing: sed 's,[[^/][^/]]*,..,g' Set <package>_topbuilddir
#	  to this result.
#	* Exit the loop.
#--------------------------------------------------------------------

# Initialize variables
tkdir_root=''
tkdir_topbuilddir=''

AC_ARG_WITH(tkdir,
    [Generation of Makefiles:
  --without-tkdir         do not generate Makefiles in the TK subdir],
    , [with_tkdir=yes])
if test ! "X$with_tkdir" = "Xno" ; then
    subdir_file_exists='AscendRC'
    subdir_locations='ascend4/TK'
    subdir_output='
	$subdir_root/Makefile
	$subdir_root/Makefile.Rules:$subdir_root/Makefile.Rules.in
	$subdir_root/bitmaps/Makefile
	$subdir_root/templates/Makefile
	'
    for subdir_root in $subdir_locations ; do
        if test -f $fullpathsrcdir/$subdir_root/$subdir_file_exists ; then
	    tkdir_root="../$subdir_root"
            tkdir_makefiles=`eval echo $subdir_output`
            tkdir_topbuilddir=`echo "$subdir_root" | sed 's,[[^/][^/]]*,..,g'`
            break
        fi
    done
fi

# Initialize variables
models_dir_root=''
models_topbuilddir=''

AC_ARG_WITH(models,
    [  --without-models        do not generate Makefiles in the models subdir],
    , [with_models=yes])
if test ! "X$with_models" = "Xno" ; then
    subdir_file_exists='system.a4l'
    subdir_locations='models ascend4/models'
    subdir_output='
	$subdir_root/Makefile
	$subdir_root/Makefile.Rules:$subdir_root/Makefile.Rules.in
        $subdir_root/ben/Makefile
	'
	## $subdir_root/examples/Makefile
	## $subdir_root/examples/abbott/Makefile
	## $subdir_root/examples/flexible_design/Makefile
	## $subdir_root/libraries/Makefile
	## $subdir_root/libraries/abbott/Makefile
	## $subdir_root/pending/Makefile
	## $subdir_root/pending/examples/Makefile
	## $subdir_root/pending/libraries/Makefile
    for subdir_root in $subdir_locations ; do
        if test -f $fullpathsrcdir/$subdir_root/$subdir_file_exists ; then
	    models_dir_root="../$subdir_root"
            models_makefiles=`eval echo $subdir_output`
            models_topbuilddir=`echo "$subdir_root" | sed 's,[[^/][^/]]*,..,g'`
            break
        fi
    done
fi


# Initialize variables
help_dir_root=''
help_topbuilddir=''

dnl >>>>AC_ARG_WITH(help,
dnl >>>>    [  --without-help          do not generate Makefiles in the help subdir],
dnl >>>>    , [with_help=yes])
dnl >>>>if test ! "X$with_help" = "Xno" ; then
dnl >>>>    subdir_file_exists='ascend-helpTOC.htm'
dnl >>>>    subdir_locations='help ascend4/help'
dnl >>>>    subdir_output='
dnl >>>>	$subdir_root/Makefile
dnl >>>>	$subdir_root/Makefile.Rules:$subdir_root/Makefile.Rules.in
dnl >>>>	$subdir_root/Screenshots/Makefile
dnl >>>>	'
dnl >>>>    for subdir_root in $subdir_locations ; do
dnl >>>>        if test -f $fullpathsrcdir/$subdir_root/$subdir_file_exists ; then
dnl >>>>	    help_dir_root="../$subdir_root"
dnl >>>>            help_makefiles=`eval echo $subdir_output`
dnl >>>>            help_topbuilddir=`echo "$subdir_root" | sed 's,[[^/][^/]]*,..,g'`
dnl >>>>            break
dnl >>>>        fi
dnl >>>>    done
dnl >>>>fi


#--------------------------------------------------------------------
#	The variables we substitute into the Makefile.in files
#	and the command to actually generate the Makefiles
#--------------------------------------------------------------------
AC_SUBST(ascpwd)
AC_SUBST(fullpathsrcdir)
AC_SUBST(asc_include)
AC_SUBST(CC)
AC_SUBST(CFLAGS)
AC_SUBST(LEX)
AC_SUBST(LEXLIB)
AC_SUBST(scanner_src)
AC_SUBST(typer_src)
AC_SUBST(MATH_LIBS)
AC_SUBST(DEBUG_LIBS)
AC_SUBST(X11_INCLUDES)
AC_SUBST(X11_LIBRARIES)
AC_SUBST(X11_RUN_PATH)
AC_SUBST(X11_EXTRA_LIBS)
AC_SUBST(DL_LIBS)
AC_SUBST(LD_FLAGS)
AC_SUBST(LD_SEARCH_FLAGS)
AC_SUBST(SHLIB_CFLAGS)
AC_SUBST(SHLIB_LD)
AC_SUBST(SHLIB_LD_LIBS)
AC_SUBST(SHLIB_SUFFIX)
AC_SUBST(ASC_LIB_SUFFIX)
AC_SUBST(TCL_LIB)
AC_SUBST(TCL_HDR)
AC_SUBST(TK_LIB)
AC_SUBST(TK_HDR)
AC_SUBST(TKTABLE_LIB)
AC_SUBST(ASC_TK_LIBRARY)
AC_SUBST(ASC_TCL_LIBRARY)
AC_SUBST(HAVE_TKTABLE)
AC_SUBST(asc_subdirs)
AC_SUBST(F77)
AC_SUBST(F77LIBS)
AC_SUBST(BLASLIB)
AC_SUBST(make_blaslib)
AC_SUBST(LPAKLIB)
AC_SUBST(make_lpaklib)
AC_SUBST(LSODLIB)
AC_SUBST(make_lsodlib)
AC_SUBST(HAVE_LSOD)
AC_SUBST(OPTSQPLIB)
AC_SUBST(make_rsqplib)
AC_SUBST(HAVE_OPTSQP)
dnl AC_SUBST(HARWELLLIB)
dnl AC_SUBST(make_harwelllib)
dnl AC_SUBST(HAVE_HARWELL)
AC_SUBST(MINOSLIB)
AC_SUBST(make_minoslib)
AC_SUBST(HAVE_MINOS)
AC_SUBST(CONOPTLIB)
AC_SUBST(make_conoptlib)
AC_SUBST(HAVE_CONOPT)
AC_SUBST(tkdir_root)
AC_SUBST(tkdir_topbuilddir)
AC_SUBST(models_dir_root)
AC_SUBST(models_topbuilddir)
AC_SUBST(help_dir_root)
AC_SUBST(help_topbuilddir)

AC_OUTPUT(
	ascend4/ConfigAscend:ascend4/ConfigAscend.in
	ascend4/Makefile
	ascend4/bin/ascend4.sh
	ascend4/Makefile.Rules:ascend4/Makefile.Rules.in
	ascend4/archive/Makefile
	ascend4/bin/Makefile
	ascend4/compiler/Makefile
	ascend4/general/Makefile
	ascend4/interface/Makefile
	ascend4/lib/Makefile
	ascend4/packages/Makefile
	ascend4/solver/Makefile
	ascend4/utilities/Makefile
	$tkdir_makefiles
	$models_makefiles
	$help_makefiles
        $blaslib_makefile
	$lpaklib_makefile
	$lsodlib_makefile
	$rsqplib_makefile
	$conoptlib_makefile
	$minoslib_makefile
	)