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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 during [incr Tcl]

dnl installation to configure the system for the local environment.

AC_INIT(../generic/itcl.h)

# RCS: $Id: configure.in,v 1.1.1.1 2002-01-16 10:24:47 markom Exp $

ITCL_VERSION=3.0

ITCL_MAJOR_VERSION=3

ITCL_MINOR_VERSION=0

ITCL_RELEASE_LEVEL=0

VERSION=${ITCL_VERSION}

AC_CONFIG_AUX_DIR(../../config)

AC_PREREQ(2.0)

# -----------------------------------------------------------------------

#   Set up a new default --prefix.  If a previous installation of

#   [incr Tcl] can be found searching $PATH use that directory.

# -----------------------------------------------------------------------

AC_PREFIX_DEFAULT(/usr/local)

AC_PREFIX_PROGRAM(tclsh)

if test "${prefix}" = "NONE"; then

    prefix=/usr/local

fi

if test "${exec_prefix}" = "NONE"; then

    exec_prefix=$prefix

fi

AC_PROG_INSTALL

AC_PROG_RANLIB

# -----------------------------------------------------------------------

BUILD_DIR=`pwd`

ITCL_SRC_DIR=`cd $srcdir/..; pwd`

cd ${BUILD_DIR}

dnl CYGNUS LOCAL: allow gcc without a special flag

dnl AC_ARG_ENABLE(gcc, [  --enable-gcc            allow use of gcc if available],

dnl     [itcl_ok=$enableval], [itcl_ok=no])

dnl if test "$itcl_ok" = "yes"; then

    AC_PROG_CC

dnl else

dnl     CC=${CC-cc}

dnl AC_SUBST(CC)

dnl fi

dnl END CYGNUS LOCAL

#--------------------------------------------------------------------

#   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.

# CYGNUS LOCAL - Actually, tcl is one level higher - a sibling of the

# itcl directory that contains itcl proper, itk & iwidgets.

#--------------------------------------------------------------------

dnl CYGNUS LOCAL: We just call the Tcl directory "tcl", not "tcl8.0"

AC_ARG_WITH(tcl, [  --with-tcl=DIR          use Tcl 8.0 binaries from DIR],

        itcl_search=$withval, itcl_search=`cd ../../..; ls -d \`pwd\`/tcl*/unix`)

dnl END CYGNUS LOCAL

TCL_LIB_DIR=""

dnl CYGNUS LOCAL: Look in the local tree FIRST, not the install directory...

for dir in $itcl_search $exec_prefix/lib ; do

    if test -r $dir/tclConfig.sh; then

        TCL_LIB_DIR=$dir

        break

    fi

done

if test -z "$TCL_LIB_DIR"; then

    AC_MSG_ERROR(Can't find Tcl libraries.  Use --with-tcl to specify the directory containing tclConfig.sh on your system.)

fi

#--------------------------------------------------------------------

#   Read in configuration information generated by Tcl for shared

#   libraries, and arrange for it to be substituted into our

#   Makefile.

#--------------------------------------------------------------------

file=$TCL_LIB_DIR/tclConfig.sh

. $file

CFLAGS=$TCL_CFLAGS

SHLIB_CFLAGS=$TCL_SHLIB_CFLAGS

SHLIB_LD=$TCL_SHLIB_LD

SHLIB_LD_LIBS=$TCL_SHLIB_LD_LIBS

SHLIB_SUFFIX=$TCL_SHLIB_SUFFIX

DL_LIBS=$TCL_DL_LIBS

LD_FLAGS=$TCL_LD_FLAGS

LD_SEARCH_FLAGS=$TCL_LD_SEARCH_FLAGS

#--------------------------------------------------------------------

#   Make sure that we can find the Tcl sources, so we can include

#   the "tclInt.h" file.

#--------------------------------------------------------------------

if test ! -d "$TCL_SRC_DIR"; then

    AC_MSG_ERROR(Can't find Tcl source directory "$TCL_SRC_DIR".  Itcl can't be built without this directory.)

fi

#--------------------------------------------------------------------

#   If this is gcc, add some extra compile flags.

#--------------------------------------------------------------------

AC_MSG_CHECKING([whether C compiler is gcc])

AC_CACHE_VAL(itcl_cv_prog_gcc, [

    AC_EGREP_CPP(_cc_is_gcc_, [

#ifdef __GNUC__

_cc_is_gcc_

#endif

],      [itcl_cv_prog_gcc=yes], [itcl_cv_prog_gcc=no])])

AC_MSG_RESULT([$itcl_cv_prog_gcc])

# CYGNUS LOCAL - CFLAGS for gcc should include -g -O2

if test -z "$CFLAGS" ; then

if test "$itcl_cv_prog_gcc" = "yes" ; then

   CFLAGS="-g -O2"

else

   CFLAGS="-O"

fi

fi

# CYGNUS LOCAL - use -fwritable-strings with gcc, needed for Tcl8.1

if test "$itcl_cv_prog_gcc" = "yes" ; then

    CFLAGS="$CFLAGS -fwritable-strings -Wshadow -Wtraditional -Wall"

fi

AC_MSG_CHECKING([default compiler flags])

AC_ARG_WITH(cflags, [  --with-cflags=FLAGS     set compiler flags to FLAGS],

    [CFLAGS="$with_cflags"])

AC_MSG_RESULT([$CFLAGS])

if test "$TCL_CC" != "$CC" ; then

    echo ""

    echo "WARNING:  Compiler is $CC but Tcl was compiled with $TCL_CC"

    echo ""

fi

#--------------------------------------------------------------------

#   The statements below define a collection of symbols related to

#   building libitcl as a shared library instead of a static library.

#--------------------------------------------------------------------

AC_ARG_ENABLE(shared,

    [  --enable-shared         build libitcl as a shared library],

    [ok=$enableval], [ok=no])

if test "$ok" = "yes"; then

    if test ${TCL_SHARED_BUILD} = 0; then

        AC_MSG_ERROR(Tcl was not built with --enable-shared, so you can't use shared libraries.)

    fi

    SHLIB_CFLAGS="${SHLIB_CFLAGS}"

    eval "ITCL_LIB_FILE=libitcl${VERSION}${SHLIB_SUFFIX}"

    ITCL_PKG_FILE="[[file join [file dirname \$dir] ${ITCL_LIB_FILE}]]"

    MAKE_LIB="\$(SHLIB_LD) -o ${ITCL_LIB_FILE} \$(OBJS) ${SHLIB_LD_LIBS} "

    RANLIB=":"

else

    SHLIB_CFLAGS=""

    # CYGNUS LOCAL - Strip dots from library name for SunOS4, etc...

    if test ${TCL_LIB_VERSIONS_OK} = "nodots"; then

        ITCL_LIB_FILE="libitcl`echo ${VERSION} | tr -d .`.a"

    else

        eval "ITCL_LIB_FILE=libitcl${VERSION}.a"

    fi

    ITCL_PKG_FILE=""

    MAKE_LIB="ar cr ${ITCL_LIB_FILE} \${OBJS}"

fi

ITCL_SH="`pwd`/itclsh"

# 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

    ITCL_BUILD_LIB_SPEC="-L`pwd` -litcl${VERSION}"

    ITCL_LIB_SPEC="-L${exec_prefix}/lib -litcl${VERSION}"

else

    ITCL_BUILD_LIB_SPEC="-L`pwd` -litcl`echo ${VERSION} | tr -d .`"

    ITCL_LIB_SPEC="-L${exec_prefix}/lib -litcl`echo ${VERSION} | tr -d .`"

fi

ITCL_LIB_FULL_PATH="`pwd`/${ITCL_LIB_FILE}"

AC_SUBST(CFLAGS)

AC_SUBST(DL_LIBS)

AC_SUBST(LD_FLAGS)

AC_SUBST(MAKE_LIB)

AC_SUBST(SHLIB_CFLAGS)

AC_SUBST(SHLIB_LD)

AC_SUBST(SHLIB_LD_LIBS)

AC_SUBST(SHLIB_SUFFIX)

AC_SUBST(LD_SEARCH_FLAGS)

AC_SUBST(TCL_VERSION)

AC_SUBST(TCL_SRC_DIR)

AC_SUBST(TCL_LIB_DIR)

AC_SUBST(TCL_LIB_SPEC)

AC_SUBST(TCL_BUILD_LIB_SPEC)

AC_SUBST(TCL_LIB_FLAG)

AC_SUBST(TCL_DBGX)

AC_SUBST(TCL_DEFS)

AC_SUBST(TCL_LIBS)

AC_SUBST(TCL_SHLIB_LD_LIBS)

AC_SUBST(TCL_SHLIB_SUFFIX)

AC_SUBST(TCL_COMPAT_OBJS)

AC_SUBST(TCL_CFLAGS)

AC_SUBST(TCL_LIB_FULL_PATH)

AC_SUBST(ITCL_VERSION)

AC_SUBST(ITCL_MAJOR_VERSION)

AC_SUBST(ITCL_MINOR_VERSION)

AC_SUBST(ITCL_RELEASE_LEVEL)

AC_SUBST(ITCL_BUILD_LIB_SPEC)

AC_SUBST(ITCL_LIB_FILE)

AC_SUBST(ITCL_LIB_SPEC)

AC_SUBST(ITCL_PKG_FILE)

AC_SUBST(ITCL_SRC_DIR)

AC_SUBST(ITCL_SH)

AC_SUBST(ITCL_LIB_FULL_PATH)

AC_OUTPUT(Makefile pkgIndex.tcl ../itclConfig.sh)