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dnl	This file is an input file used by the GNU "autoconf" program to
dnl	generate the file "configure", which is run to configure the
dnl	Makefile in this directory.

AC_INIT(../../generic/tixInit.c)

#--------------------------------------------------------------------
#	Remove the ./config.cache file and rerun configure if
#	the cache file belong to a different architecture
#----------------------------------------------------------------------
AC_CHECK_PROG(UNAME, uname -a, [uname -a], "")
if test "$UNAME" = ""; then
    AC_CHECK_PROG(UNAME, uname, [uname], "")
fi

if test "$UNAME" != ""; then
    uname=`$UNAME`
    AC_MSG_CHECKING([cached value of \$uname])
    AC_CACHE_VAL(ac_cv_prog_uname, [nocached=1 ac_cv_prog_uname=`$UNAME`])
    if test "$nocached" = "1"; then
	AC_MSG_RESULT(no)
    else
	AC_MSG_RESULT(yes)
    fi

    if test "$uname" != "$ac_cv_prog_uname"; then
        echo "Running on a different machine/architecture. Can't use cached values"
	echo "Removing config.cache and running configure again ..."
	rm -f config.cache
        CMDLINE="$0 $*"
	exec $CMDLINE
    fi
fi

#----------------------------------------------------------------------
# We don't want to use any relative path because we need to generate
# Makefile's in subdirectories
#----------------------------------------------------------------------
if test "$INSTALL" = "./install.sh"; then
    INSTALL=`pwd`/install.sh
fi

#--------------------------------------------------------------------
#	Version information about this TIX release.
#--------------------------------------------------------------------

TIX_VERSION=4.1
TIX_MAJOR_VERSION=4
TIX_MINOR_VERSION=1

BIN_VERSION=${TIX_VERSION}.7.4


VERSION=${BIN_VERSION}

#--------------------------------------------------------------------
#	See if user wants to use gcc to compile Tix. This option must
#	be used before any checking that uses the C compiler.
#--------------------------------------------------------------------

AC_ARG_ENABLE(gcc, [  --enable-gcc            allow use of gcc if available],
    [tix_ok=$enableval], [tix_ok=no])
if test "$tix_ok" = "yes"; then
    AC_PROG_CC
else
    CC=${CC-cc}
AC_SUBST(CC)
fi

AC_PROG_INSTALL
AC_PROG_RANLIB
AC_HAVE_HEADERS(unistd.h limits.h)
AC_PROG_MAKE_SET

#--------------------------------------------------------------------
#	strdup() is not a POSIX call and many machines don't have it
#--------------------------------------------------------------------

AC_CHECK_FUNC(strdup, , AC_DEFINE(NO_STRDUP))

#--------------------------------------------------------------------
#	unsigned char is not supported by some non-ANSI compilers.
#--------------------------------------------------------------------

AC_MSG_CHECKING([unsigned char])
AC_TRY_COMPILE([#include <stdio.h>],[
     unsigned char c = 'c';
], tcl_ok=supported, tcl_ok=not supported)

AC_MSG_RESULT($tcl_ok)
if test $tcl_ok = supported; then
    AC_DEFINE(UCHAR_SUPPORTED)
fi

#--------------------------------------------------------------------
#	Check whether there is an strcasecmp function on this system.
#	This is a bit tricky because under SCO it's in -lsocket and
#	under Sequent Dynix it's in -linet.
#--------------------------------------------------------------------

AC_CHECK_FUNC(strcasecmp, tcl_ok=1, tcl_ok=0)
if test "$tcl_ok" = 0; then
    AC_CHECK_LIB(socket, strcasecmp, tcl_ok=1, tcl_ok=0)
fi
if test "$tcl_ok" = 0; then
    AC_CHECK_LIB(inet, strcasecmp, tcl_ok=1, tcl_ok=0)
fi
if test "$tcl_ok" = 0; then
    AC_DEFINE(NO_STRCASECMP)
fi

#--------------------------------------------------------------------
#	See if there was a command-line option for where Tcl is;  if
#	not, assume that its top-level directory is a sibling of ours.
#--------------------------------------------------------------------

AC_ARG_WITH(tcl, [  --with-tcl=DIR           use Tcl 7.4 source from DIR],
   val=$withval, val="")

AC_MSG_CHECKING([Tcl source directory])

if test "$val" != ""; then
    TCL_SRC_DIR=$val
    if test ! -d $TCL_SRC_DIR; then
        AC_MSG_ERROR(Directory $TCL_SRC_DIR doesn't exist)
        AC_MSG_ERROR(Please install the source code of Tcl 7.4)
        exit 1
    fi
else
    dirs="../../../tcl7.4*"
    TCL_SRC_DIR="no-no"
    for i in $dirs; do
        if test -d $i; then
	    TCL_SRC_DIR=`cd $i; pwd`
        fi
    done

    if test ! -d $TCL_SRC_DIR; then
        AC_MSG_ERROR(Cannot locate Tcl source directory in $dirs)
        AC_MSG_ERROR(Please install the source code of Tcl 7.4)
        exit 1
    fi
fi
AC_MSG_RESULT($TCL_SRC_DIR)

TCL_BIN_DIR=$TCL_SRC_DIR/unix

#--------------------------------------------------------------------
#	See if there was a command-line option for where Tk is;  if
#	not, assume that its top-level directory is a sibling of ours.
#--------------------------------------------------------------------

AC_ARG_WITH(tk, [  --with-tk=DIR           use Tk 4.0 source from DIR],
   val=$withval, val="")

AC_MSG_CHECKING([Tk source directory])

if test "$val" != ""; then
    TK_SRC_DIR=$val
    if test ! -d $TK_SRC_DIR; then
        AC_MSG_ERROR(Directory $TK_SRC_DIR doesn't exist)
        AC_MSG_ERROR(Please install the source code of Tk 4.0)
        exit 1
    fi
else
    dirs="../../../tk4.0*"
    TK_SRC_DIR="no-no"
    for i in $dirs; do
        if test -d $i; then
	    TK_SRC_DIR=`cd $i; pwd`
        fi
    done

    if test ! -d $TK_SRC_DIR; then
        AC_MSG_ERROR(Cannot locate Tk source directory in $dirs)
        AC_MSG_ERROR(Please install the source code of Tk 4.0)
        exit 1
    fi
fi
AC_MSG_RESULT($TK_SRC_DIR)

TK_BIN_DIR=$TK_SRC_DIR/unix

#--------------------------------------------------------------------
#	Find out the top level source directory of the Tix package.
#--------------------------------------------------------------------
TIX_SRC_DIR=`cd ../..; pwd`

#--------------------------------------------------------------------
#	See if we should compile SAM
#--------------------------------------------------------------------

AC_ARG_ENABLE(sam,
    [  --enable-sam            build stand-alone modules],
    [ok=$enableval], [ok=no])

if test "$ok" = "yes"; then
    TIX_BUILD_SAM="yes"
    TIX_SAM_TARGETS='$(SAM_TARGETS)'
else
    TIX_BUILD_SAM="no"
fi

	    TIX_SAM_INSTALL="_install_sam_exe_ _install_sam_lib_"

#--------------------------------------------------------------------
#	Supply a substitute for stdlib.h if it doesn't define strtol,
#	strtoul, or strtod (which it doesn't in some versions of SunOS).
#--------------------------------------------------------------------

AC_MSG_CHECKING(stdlib.h)
AC_HEADER_EGREP(strtol, stdlib.h, tk_ok=yes, tk_ok=no)
AC_HEADER_EGREP(strtoul, stdlib.h, , tk_ok=no)
AC_HEADER_EGREP(strtod, stdlib.h, , tk_ok=no)
if test $tk_ok = no; then
    AC_DEFINE(NO_STDLIB_H)
fi
AC_MSG_RESULT($tk_ok)

#--------------------------------------------------------------------
#	Check for various typedefs and provide substitutes if
#	they don't exist.
#--------------------------------------------------------------------

AC_MODE_T
AC_PID_T
AC_SIZE_T
AC_UID_T

#--------------------------------------------------------------------
#	Locate the X11 header files and the X11 library archive.  Try
#	the ac_path_x macro first, but if it doesn't find the X stuff
#	(e.g. because there's no xmkmf program) then check through
#	a list of possible directories.  Under some conditions the
#	autoconf macro will return an include directory that contains
#	no include files, so double-check its result just to be safe.
#--------------------------------------------------------------------

AC_PATH_X
not_really_there=""
if test "$no_x" = ""; then
    if test "$x_includes" = ""; then
	AC_TRY_CPP([#include <X11/XIntrinsic.h>], , not_really_there="yes")
    else
	if test ! -r $x_includes/X11/Intrinsic.h; then
	    not_really_there="yes"
	fi
    fi
fi
if test "$no_x" = "yes" -o "$not_really_there" = "yes"; then
    echo checking for X11 header files
    XINCLUDES="# no special path needed"
    AC_TRY_CPP([#include <X11/Intrinsic.h>], , XINCLUDES="nope")
    if test "$XINCLUDES" = nope; then
        dirs="/usr/unsupported/include /usr/local/include /usr/X386/include /usr/include/X11R4 /usr/X11R5/include /usr/include/X11R5 /usr/openwin/include /usr/X11/include /usr/sww/include"
        for i in $dirs ; do
	    if test -r $i/X11/Intrinsic.h; then
	        XINCLUDES=" -I$i"
	    fi
        done
    fi
else
    if test "$x_includes" != ""; then
	XINCLUDES=-I$x_includes
    else
	XINCLUDES="# no special path needed"
    fi
fi
if test "$XINCLUDES" = nope; then
  echo "Warning:  couldn't find any X11 include files."
  XINCLUDES="# no include files found"
fi
AC_SUBST(XINCLUDES)

if test "$no_x" = yes; then
    XLIBSW=nope
    if test "$XLIBSW" = nope; then
	dirs="/usr/unsupported/lib /usr/local/lib /usr/X386/lib /usr/lib/X11R4 /usr/X11R5/lib /usr/lib/X11R5 /usr/openwin/lib /usr/X11/lib /usr/sww/X11/lib"
	for i in $dirs ; do
	    if test -r $i/libX11.a -o -r $i/libX11.so -o -r $i/libX11.sl; then
		XLIBSW="-L$i -lX11"
	    fi
	done
    fi
else
    if test "$x_libraries" = ""; then
	XLIBSW=-lX11
    else
	XLIBSW="-L$x_libraries -lX11"
    fi
fi
if test "$XLIBSW" = nope ; then
    AC_CHECK_LIB(Xwindow, XCreateWindow, XLIBSW=-lXwindow)
fi
if test "$XLIBSW" = nope ; then
    echo "Warning:  couldn't find the X11 library archive.  Using -lX11."
    XLIBSW=-lX11
fi
AC_SUBST(XLIBSW)

#--------------------------------------------------------------------
#	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.
#--------------------------------------------------------------------

AC_CHECK_LIB(Xbsd, main, [LIBS="$LIBS -lXbsd"])

tk_checkBoth=0
AC_CHECK_FUNC(connect, tk_checkSocket=0, tk_checkSocket=1)
if test "$tk_checkSocket" = 1; then
    AC_CHECK_LIB(socket, main, LIBS="$LIBS -lsocket", tk_checkBoth=1)
fi
if test "$tk_checkBoth" = 1; then
    tk_oldLibs=$LIBS
    LIBS="$LIBS -lsocket -lnsl"
    AC_CHECK_FUNC(accept, tk_checkNsl=0, [LIBS=$tk_oldLibs])
fi
AC_CHECK_FUNC(gethostbyname, , AC_CHECK_LIB(nsl, main, [LIBS="$LIBS -lnsl"]))

#--------------------------------------------------------------------
# One more check related to the X libraries.  The standard releases
# of Ultrix don't support the "xauth" mechanism, so send won't work
# unless TK_NO_SECURITY is defined.  However, there are usually copies
# of the MIT X server available as well, which do support xauth.
# Check for the MIT stuff and use it if it exists.
#
# Note: can't use ac_check_lib macro (at least, not in Autoconf 2.1)
# because it can't deal with the "-" in the library name.
#--------------------------------------------------------------------

if test -d /usr/include/mit ; then
    AC_MSG_CHECKING([MIT X libraries])
    tk_oldCFlags=$CFLAGS
    CFLAGS="$CFLAGS -I/usr/include/mit"
    tk_oldLibs=$LIBS
    LIBS="$LIBS -lX11-mit"
    AC_TRY_LINK([
	#include <X11/Xlib.h>
    ], [
	XOpenDisplay(0);
    ], [
	AC_MSG_RESULT(yes)
	XLIBSW="-lX11-mit"
	XINCLUDES="-I/usr/include/mit"
    ], AC_MSG_RESULT(no))
    CFLAGS=$tk_oldCFlags
    LIBS=$tk_oldLibs
fi

#--------------------------------------------------------------------
#	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").
#--------------------------------------------------------------------

MATH_LIBS=""
AC_CHECK_FUNC(sin, , MATH_LIBS="-lm")
AC_CHECK_LIB(ieee, main, [MATH_LIBS="-lieee $MATH_LIBS"])
AC_SUBST(MATH_LIBS)

#--------------------------------------------------------------------
#	If this system doesn't have a memmove procedure, use memcpy
#	instead.
#--------------------------------------------------------------------

AC_CHECK_FUNC(memmove, , [AC_DEFINE(memmove, memcpy)])

IS_ITCL=0
ITCL_BUILD_LIB_SPEC=""
ITK_BUILD_LIB_SPEC=""
TIX_EXE_FILE=tixwish
TCL_SAMEXE_FILE=satclsh
TK_SAMEXE_FILE=sawish
TIX_SAMEXE_FILE=satixwish

TIX_LIB_FILE=libtix4140.a
TIX_MAKE_LIB="ar cr ${TIX_LIB_FILE} \${OBJS}"
TIX_BUILD_LIB_SPEC="\$(TIX_LIB_FILE)"
TCL_SAM_FILE=libtclsam74.a
TK_SAM_FILE=libtksam40.a
TIX_SAM_FILE=libtixsam4140.a
TCL_MAKE_SAM="ar cr ${TCL_SAM_FILE} \${TCL_SAM_OBJS}"
TK_MAKE_SAM="ar cr ${TK_SAM_FILE} \${TK_SAM_OBJS}"
TIX_MAKE_SAM="ar cr ${TIX_SAM_FILE} \${TIX_SAM_OBJS}"
TCL_BUILD_SAM_SPEC="\$(TCL_SAM_FILE)"
TK_BUILD_SAM_SPEC="\$(TK_SAM_FILE)"
TIX_BUILD_SAM_SPEC="\$(TIX_SAM_FILE)"

#----------------------------------------------------------------------
#	Substitution strings exported by TIX
#----------------------------------------------------------------------
AC_SUBST(CC)
AC_SUBST(RANLIB)
AC_SUBST(SHLIB_CFLAGS)
AC_SUBST(SHLIB_LD)
AC_SUBST(SHLIB_LD_LIBS)
AC_SUBST(SHLIB_SUFFIX)
AC_SUBST(SHLIB_VERSION)
AC_SUBST(DL_LIBS)
AC_SUBST(LD_FLAGS)
AC_SUBST(TCL_BUILD_LIB_SPEC)
AC_SUBST(TCL_LIBS)
AC_SUBST(TCL_VERSION)
AC_SUBST(TCL_SRC_DIR)
AC_SUBST(TCL_BIN_DIR)
AC_SUBST(TK_BUILD_LIB_SPEC)
AC_SUBST(TK_LIBS)
AC_SUBST(TK_VERSION)
AC_SUBST(TK_SRC_DIR)
AC_SUBST(TK_BIN_DIR)
AC_SUBST(TK_XINCLUDES)
AC_SUBST(TIX_LD_SEARCH_FLAGS)
AC_SUBST(TIX_MAJOR_VERSION)
AC_SUBST(TIX_MINOR_VERSION)
AC_SUBST(TIX_VERSION)
AC_SUBST(TIX_SRC_DIR)
AC_SUBST(TIX_SHLIB_CFLAGS)
AC_SUBST(TIX_MAKE_LIB)
AC_SUBST(TIX_LIB_FILE)
AC_SUBST(TIX_BUILD_LIB_SPEC)
AC_SUBST(TIX_LIB_SPEC)
AC_SUBST(TIX_EXE_FILE)
AC_SUBST(TIX_SAM_TARGETS)
AC_SUBST(TIX_SAM_INSTALL)
AC_SUBST(TCL_SAM_FILE)
AC_SUBST(TCL_MAKE_SAM)
AC_SUBST(TK_SAM_FILE)
AC_SUBST(TK_MAKE_SAM)
AC_SUBST(TIX_SAM_FILE)
AC_SUBST(TIX_MAKE_SAM)
AC_SUBST(TIX_DEFS)
AC_SUBST(ITCL_BUILD_LIB_SPEC)
AC_SUBST(ITK_BUILD_LIB_SPEC)
AC_SUBST(TCL_SAMEXE_FILE)
AC_SUBST(TK_SAMEXE_FILE)
AC_SUBST(TIX_SAMEXE_FILE)
AC_SUBST(TCL_BUILD_SAM_SPEC)
AC_SUBST(TK_BUILD_SAM_SPEC)
AC_SUBST(TIX_BUILD_SAM_SPEC)

AC_OUTPUT(Makefile)