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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}.7.6


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

#--------------------------------------------------------------------
#       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 7.6 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 $TCL_SRC_DIR doesn't exist)
        AC_MSG_ERROR(Please install the source code of Tcl 7.6)
        exit 1
    fi
else
    # CYGNUS LOCAL: Just use tcl.
    dirs="${srcdir}/../../../tcl7.6* ${srcdir}/../../../tcl"
    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 $dirs)
        AC_MSG_ERROR(Please install the source code of Tcl 7.6)
        exit 1
    fi
fi
AC_MSG_RESULT($TCL_SRC_DIR)

# CYGNUS LOCAL: This used to get TCL_BIN_DIR from TCL_SRC_DIR, which
# only works when srcdir == objdir
TCL_BIN_DIR=../../../tcl/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 4.2 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 $TK_SRC_DIR doesn't exist)
        AC_MSG_ERROR(Please install the source code of Tk 4.2)
        exit 1
    fi
else
    # CYGNUS LOCAL: Just use tk
    dirs="${srcdir}/../../../tk4.2* ${srcdir}/../../../tk"
    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 $dirs)
        AC_MSG_ERROR(Please install the source code of Tk 4.2)
        exit 1
    fi
fi
AC_MSG_RESULT($TK_SRC_DIR)

# CYGNUS LOCAL: This used to get TK_BIN_DIR from TK_SRC_DIR, which
# only works when srcdir == objdir
TK_BIN_DIR=../../../tk/unix

#--------------------------------------------------------------------
#       Find out the top level source directory of the Tix package.
#--------------------------------------------------------------------
TIX_SRC_DIR=`cd ${srcdir}/../..; 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)'
    TIX_SAM_INSTALL=_install_sam_
else
    TIX_BUILD_SAM="no"
fi

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

#--------------------------------------------------------------------
#       Read in configuration information generated by Tcl for shared
#       libraries, and arrange for it to be substituted into our
#       Makefile.
#--------------------------------------------------------------------

file=$TCL_BIN_DIR/tclConfig.sh
. $file
CC=$TCL_CC
SHLIB_CFLAGS=$TCL_SHLIB_CFLAGS
SHLIB_LD=$TCL_SHLIB_LD
SHLIB_LD_LIBS=$TCL_SHLIB_LD_LIBS
SHLIB_SUFFIX=$TCL_SHLIB_SUFFIX
SHLIB_VERSION=$TCL_SHLIB_VERSION

DL_LIBS=$TCL_DL_LIBS
LD_FLAGS=$TCL_LD_FLAGS
TIX_LD_SEARCH_FLAGS=$TCL_LD_SEARCH_FLAGS

#--------------------------------------------------------------------
#       Read in configuration information generated by Tk and arrange
#       for it to be substituted into our Makefile.
#--------------------------------------------------------------------
file=$TK_BIN_DIR/tkConfig.sh
. $file

TIX_DEFS="$TK_DEFS $TCL_DEFS"

# Note:  in the following variable, it's important to use the absolute
# path name of the Tcl directory rather than "..":  this is because
# AIX remembers this path and will attempt to use it at run-time to look
# up the Tcl library.

if test "${TCL_LIB_VERSIONS_OK}" = "ok"; then
    TIX_BUILD_LIB_SPEC="-L`pwd` -ltix${VERSION}"
    TIX_BUILD_SAM_SPEC="-L`pwd` -ltixsam${VERSION}"
    TCL_BUILD_SAM_SPEC="-L`pwd` -ltclsam${TCL_VERSION}"
    TK_BUILD_SAM_SPEC="-L`pwd` -ltksam${TK_VERSION}"
    TIX_LIB_SPEC="-L${exec_prefix}/lib -ltix${VERSION}"
else
    TIX_BUILD_LIB_SPEC="-L`pwd` -ltix`echo ${VERSION} | tr -d .`"
    TIX_BUILD_SAM_SPEC="-L`pwd` -ltixsam`echo ${VERSION} | tr -d .`"
    TCL_BUILD_SAM_SPEC="-L`pwd` -ltclsam`echo ${TCL_VERSION} | tr -d .`"
    TK_BUILD_SAM_SPEC="-L`pwd` -ltksam`echo ${TK_VERSION} | tr -d .`"
    TIX_LIB_SPEC="-L${exec_prefix}/lib -ltix`echo ${VERSION} | tr -d .`"
fi

#--------------------------------------------------------------------
#       See if we should compile shared library.
#--------------------------------------------------------------------

AC_ARG_ENABLE(shared,
    [  --enable-shared         build libtix as a shared library],
    [ok=$enableval], [ok=no])

if test "$ok" = "yes" -a "${SHLIB_SUFFIX}" != ""; then
    TIX_SHLIB_CFLAGS="${SHLIB_CFLAGS}"
    RANLIB=":"

    # The main Tix library
    #
    eval "TIX_LIB_FILE=libtix${TCL_SHARED_LIB_SUFFIX}"
    TIX_MAKE_LIB="\${SHLIB_LD} -o ${TIX_LIB_FILE} \${OBJS} ${SHLIB_LD_LIBS}"

    # The Tcl SAM library
    #
    VERSION=7.6
    eval "TCL_SAM_FILE=libtclsam${TCL_SHARED_LIB_SUFFIX}"
    TCL_MAKE_SAM="\${SHLIB_LD} -o ${TCL_SAM_FILE} \${TCL_SAM_OBJS} ${SHLIB_LD_LIBS}"
    
    # The Tk SAM library
    #
    VERSION=4.2
    eval "TK_SAM_FILE=libtksam${TCL_SHARED_LIB_SUFFIX}"
    TK_MAKE_SAM="\${SHLIB_LD} -o ${TK_SAM_FILE} \${TK_SAM_OBJS} ${SHLIB_LD_LIBS}"
    
    # The Tix SAM library
    #
    VERSION=${BIN_VERSION}
    eval "TIX_SAM_FILE=libtixsam${TCL_SHARED_LIB_SUFFIX}"
    TIX_MAKE_SAM="\${SHLIB_LD} -o ${TIX_SAM_FILE} \${TIX_SAM_OBJS} ${SHLIB_LD_LIBS}"

else
    TIX_SHLIB_CFLAGS=""

    # The main Tix library
    #
    eval "TIX_LIB_FILE=libtix${TCL_UNSHARED_LIB_SUFFIX}"
    TIX_MAKE_LIB="ar cr ${TIX_LIB_FILE} \${OBJS}"

    # The Tcl SAM library
    
    VERSION=7.6
    eval "TCL_SAM_FILE=libtclsam${TCL_UNSHARED_LIB_SUFFIX}"
    TCL_MAKE_SAM="ar cr ${TCL_SAM_FILE} \${TCL_SAM_OBJS}"
    
    # The Tk SAM library
    #
    VERSION=4.2
    eval "TK_SAM_FILE=libtksam${TCL_UNSHARED_LIB_SUFFIX}"
    TK_MAKE_SAM="ar cr ${TK_SAM_FILE} \${TK_SAM_OBJS}"
    
    # The Tix SAM library
    #
    VERSION=${BIN_VERSION}
    eval "TIX_SAM_FILE=libtixsam${TCL_UNSHARED_LIB_SUFFIX}"
    TIX_MAKE_SAM="ar cr ${TIX_SAM_FILE} \${TIX_SAM_OBJS}"
fi


#--------------------------------------------------------------------
#       Check for the existence of the -lsocket and -lnsl libraries.
#       The order here is important, so that they end up in the right
#       order in the command line generated by make.  Here are some
#       special considerations:
#       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.
#--------------------------------------------------------------------

checked=0
for i in $TK_LIBS; do
    if test "$i" = "-lsocket"; then
        checked=1
    fi
done

if test "$checked" = "0"; then
    tcl_checkBoth=0
    AC_CHECK_FUNC(connect, tcl_checkSocket=0, tcl_checkSocket=1)
    if test "$tcl_checkSocket" = 1; then
        AC_CHECK_LIB(socket, main, TK_LIBS="$TK_LIBS -lsocket",
            tcl_checkBoth=1)
    fi
    if test "$tcl_checkBoth" = 1; then
        tk_oldLibs=$TK_LIBS
        TK_LIBS="$TK_LIBS -lsocket -lnsl"
        AC_CHECK_FUNC(accept, tcl_checkNsl=0, [TK_LIBS=$tk_oldLibs])
    fi
    AC_CHECK_FUNC(gethostbyname, , AC_CHECK_LIB(nsl, main,
        [TK_LIBS="$TK_LIBS -lnsl"]))
fi

#----------------------------------------------------------------------
#       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)

# The "binary version" of Tix (see docs/Pkg.txt)
TIX_VERSION_PKG=${BIN_VERSION}
AC_SUBST(TIX_VERSION_PKG)

TIXSAM_PKG_FILE="[[file join [file dirname \$dir] ${TIX_SAM_FILE}]]"
if test "$TIX_BUILD_SAM" = "yes"; then
    TIX_SAM_PACKAGE_IFNEEDED="package ifneeded Tixsam ${TIX_VERSION_PKG} [[list load \"${TIXSAM_PKG_FILE}\" Tixsam]]"
fi

# The package file, usually a shared library
TIX_PKG_FILE="[[file join [file dirname \$dir] ${TIX_LIB_FILE}]]"
AC_SUBST(TIX_PKG_FILE)
AC_SUBST(TIX_SAM_PACKAGE_IFNEEDED)

AC_OUTPUT(Makefile pkgIndex.tcl)