File: configure.in

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tclreadline 1.2.0-6
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dnl -*- autoconf -*-
dnl FILE: "/home/joze/src/tclreadline/configure.in"
dnl LAST MODIFICATION: "Sat, 25 Mar 2000 21:17:25 +0100 (joze)"
dnl (C) 1998 - 2000 by Johannes Zellner, <johannes@zellner.org>
dnl $Id: configure.in,v 2.17 2000/03/25 20:59:12 joze Exp $
dnl ---
dnl
dnl tclreadline -- gnu readline for tcl
dnl http://www.zellner.org/tclreadline/
dnl Copyright (c) 1998 - 2000, Johannes Zellner <johannes@zellner.org>
dnl
dnl This software is copyright under the BSD license.
dnl
dnl ================================================================== */  


AC_INIT(tclreadline.c)
AC_CONFIG_HEADER(config.h)
AC_PREREQ(2.13)
AC_REVISION($Revision: 2.17 $)
AC_CONFIG_AUX_DIR(./aux)

TCLREADLINE_MAJOR_VERSION=1
TCLREADLINE_MINOR_VERSION=2
TCLREADLINE_PATCHLEVEL=0
TCLREADLINE_VERSION=$TCLREADLINE_MAJOR_VERSION.$TCLREADLINE_MINOR_VERSION
TCLREADLINE_PATCHLEVEL_STR=${TCLREADLINE_VERSION}.${TCLREADLINE_PATCHLEVEL}
VERSION=$TCLREADLINE_VERSION

dnl AM_INIT_AUTOMAKE(tclreadline, $VERSION)

AC_CANONICAL_HOST


TCLREADLINE_LPATH=`echo $LD_LIBRARY_PATH $LD_RUN_PATH $LPATH | sed 's/:/ /g'`
TCLREADLINE_LPATH="$TCLREADLINE_LPATH /usr/local/lib /lib /usr/lib /usr/shlib"


#--------------------------------------------------------------------
#   See if there was a command-line option for where Tcl is;  if
#   not, search for Tcl.
#--------------------------------------------------------------------

AC_ARG_WITH(
    tcl,
    [  --with-tcl=DIR          where to look for tclConfig.sh],
    tcl_search=$withval,
    tcl_search=""
)

AC_MSG_CHECKING([which tclConfig.sh to use])
TCL_LIB_DIR=""
for dir in $tcl_search /usr/lib /usr/local/lib $exec_prefix/lib /usr/local/lib/unix /opt/tcl/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.)
else
    . $TCL_LIB_DIR/tclConfig.sh
    AC_MSG_RESULT($TCL_LIB_DIR/tclConfig.sh)
    AC_MSG_CHECKING([for your tcl version])
    AC_MSG_RESULT([$TCL_VERSION, patchlevel $TCL_PATCH_LEVEL])
fi

#--------------------------------------------------------------------
#    eventually check for tkConfig.sh
#--------------------------------------------------------------------

tk_search="no"
AC_ARG_WITH(
    tk,
    [  --with-tk=DIR           where to look for tkConfig.sh],
    tk_search=$withval,
    tk_search="yes"
)

if test "$tk_search" != "no"; then
    AC_MSG_CHECKING([which tkConfig.sh to use])
    TK_LIB_DIR=""
    for dir in $tk_search $TCL_LIB_DIR /usr/lib /usr/local/lib $exec_prefix/lib /usr/local/lib/unix /opt/tcl/lib; do
	if test -r $dir/tkConfig.sh; then
	    TK_LIB_DIR=$dir
	    break
	fi
    done

    if ! test -z "$TK_LIB_DIR"; then
	. $TK_LIB_DIR/tkConfig.sh
	AC_MSG_RESULT($TK_LIB_DIR/tkConfig.sh)
	AC_MSG_CHECKING([for your tk version])
	AC_MSG_RESULT([$TK_VERSION, patchlevel $TK_PATCH_LEVEL])
	AC_SUBST(TK_LIB_SPEC)
    fi
fi

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


SHLIB_CFLAGS=$TCL_SHLIB_CFLAGS
SHLIB_LD=$TCL_SHLIB_LD
if test $TCL_SHLIB_SUFFIX = ""; then
    AC_MSG_ERROR(TCL_SHLIB_SUFFIX not defined -- should be something like .so or .sl on unix.)
else
    SHLIB_SUFFIX=$TCL_SHLIB_SUFFIX
fi
DL_LIBS=$TCL_DL_LIBS
LD_FLAGS=$TCL_LD_FLAGS
SHLIB_LD_LIBS=$TCL_SHLIB_LD_LIBS
TCLREADLINE_PACKAGE_PATH=$TCL_PACKAGE_PATH


#--------------------------------------------------------------------
#   Check, if tcl_version is > 8.0
#--------------------------------------------------------------------
if test $TCL_MAJOR_VERSION -lt 8; then
    AC_MSG_ERROR(need tcl 8.0 or higher.)
fi



# -----------------------------------------------------------------------
#   Set up a new default --prefix.
# -----------------------------------------------------------------------

# this is the default anyway:
# AC_PREFIX_DEFAULT(/usr/local)

if test "${prefix}" = "NONE"; then
    prefix=$TCL_PREFIX
fi
if test "${exec_prefix}" = "NONE"; then
    exec_prefix=$TCL_EXEC_PREFIX
else
    TCLREADLINE_PACKAGE_PATH=${exec_prefix}/lib
fi

TCLREADLINE_LIBRARY=${exec_prefix}/lib/tclreadline$TCLREADLINE_VERSION


# -----------------------------------------------------------------------
#   Check for some programs here.
# -----------------------------------------------------------------------

AC_PROG_INSTALL
AC_PROG_RANLIB
AC_PROG_LN_S



# -----------------------------------------------------------------------
#   Prefer the compiler, which was used
#   to build tcl.
# -----------------------------------------------------------------------


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




# -----------------------------------------------------------------------
#   checking for the preprocessor.
#   FIXME: do we need this ?
# -----------------------------------------------------------------------

AC_PROG_CPP


if test -z "$CFLAGS" ; then
    CFLAGS=$TCL_CFLAGS_OPTIMIZE
fi

dnl #--------------------------------------------------------------------
dnl #   If this is gcc, add some extra compile flags.
dnl #--------------------------------------------------------------------
dnl 
dnl AC_MSG_CHECKING([whether C compiler is gcc])
dnl AC_CACHE_VAL(tclreadline_cv_prog_gcc,
dnl     AC_EGREP_CPP(_cc_is_gcc_, [
dnl #ifdef __GNUC__
dnl _cc_is_gcc_
dnl #endif
dnl ],      [tclreadline_cv_prog_gcc=yes], [tclreadline_cv_prog_gcc=no]))
dnl AC_MSG_RESULT([$tclreadline_cv_prog_gcc])
dnl 
dnl if test -z "$CFLAGS" ; then
dnl     CFLAGS=$TCL_CFLAGS_OPTIMIZE
dnl fi
dnl if test "$tclreadline_cv_prog_gcc" = "yes" ; then
dnl     CFLAGS="$CFLAGS -Wshadow -Wtraditional -Wall"
dnl fi
dnl 
dnl AC_MSG_CHECKING([default compiler flags])
dnl AC_ARG_WITH(cflags, [  --with-cflags=FLAGS     set compiler flags to FLAGS],
dnl     [CFLAGS="$with_cflags"])
dnl 
dnl 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 libtclreadline as a shared library instead of a static library.
#   (static is not implemented yet anyway).
#--------------------------------------------------------------------

AC_ARG_ENABLE(shared,
    [  --disable-shared        don't build libtclreadline as a shared library.],
    [ok=$enableval], [ok=yes])
if test "$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 "TCLREADLINE_LIB_FILE=libtclreadline${VERSION}${SHLIB_SUFFIX}.1"
    TCLREADLINE_PKG_FILE="[[file join [file dirname \$dir] ${TCLREADLINE_LIB_FILE}]]"
    MAKE_LIB="\$(SHLIB_LD) -o ${TCLREADLINE_LIB_FILE} \$(OBJS) ${SHLIB_LD_LIBS}"
    RANLIB=":"
else
    SHLIB_CFLAGS=""
    eval "TCLREADLINE_LIB_FILE=libtclreadline${VERSION}.a"
    TCLREADLINE_PKG_FILE="[[file join [file dirname \$dir] ${TCLREADLINE_LIB_FILE}]]"
    MAKE_LIB="ar cr ${TCLREADLINE_LIB_FILE} \${OBJS}"
fi

# 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 "${TCL_LIB_VERSIONS_OK}" = "ok"; then
    TCLREADLINE_BUILD_LIB_SPEC="-L`pwd` -ltclreadline${VERSION}"
    TCLREADLINE_LIB_SPEC="-L${TCLREADLINE_LIBRARY} -ltclreadline${VERSION}"
else
    TCLREADLINE_BUILD_LIB_SPEC="-L`pwd` -ltclreadline`echo ${VERSION} | tr -d .`"
    TCLREADLINE_LIB_SPEC="-L${TCLREADLINE_LIBRARY} -ltclreadline`echo ${VERSION} | tr -d .`"
fi




# HEADER CHECKS
#
AC_HEADER_STDC


#--------------------------------------------------------------------
#   Check for tcl.h
#--------------------------------------------------------------------

AC_ARG_WITH(tcl-includes,
            [  --with-tcl-includes=DIR where to look for tcl.h],
            tcl_includes=$withval, tcl_includes=$prefix/include)

AC_MSG_CHECKING([where to look for tcl.h])
TCL_INCLUDE_DIR=""
for dir in $tcl_includes $prefix/include/ /usr/include; do
    if test -r $dir/tcl.h; then
        TCL_INCLUDE_DIR=$dir
        break
    fi
done

if test -z "$TCL_INCLUDE_DIR"; then
    AC_MSG_ERROR([
  Can't find tcl.h.  Use --with-tcl-includes to specify the directory
  containing tcl.h on your system.])
else
    AC_MSG_RESULT($TCL_INCLUDE_DIR/tcl.h)
fi



#--------------------------------------------------------------------
#   Check for readline.h
#--------------------------------------------------------------------

AC_ARG_WITH(readline-includes,
            [  --with-readline-includes=DIR
                          readline include files in DIR],
            rl_includes=$withval, rl_includes="")

AC_MSG_CHECKING([where to look for readline.h])
READLINE_INCLUDE_DIR=""
for dir in $rl_includes /usr/local/include/readline /usr/local/include /usr/include/readline /usr/include ; do
    if test -r $dir/readline.h; then
        READLINE_INCLUDE_DIR=$dir
        break
    fi
done

if test -z "$READLINE_INCLUDE_DIR"; then
    AC_MSG_ERROR([
  Can't find readline.h.
  Use --with-readline-includes to specify the directory
  containing readline.h on your system.])
else
    AC_MSG_RESULT($READLINE_INCLUDE_DIR/readline.h)
	base="`(basename ${READLINE_INCLUDE_DIR}) 2>/dev/null`"
	if test "x${base}" != "xreadline"; then
		AC_DEFINE_UNQUOTED(READLINE_LIBRARY, 1, [ Define if we have libreadline. ])
	fi
fi



#--------------------------------------------------------------------
#   Check for libreadline
#--------------------------------------------------------------------

AC_ARG_WITH(readline-library,
            [  --with-readline-library=DIR
                          readline library files in DIR],
            rl_library=$withval, rl_library="")

AC_MSG_CHECKING([where to look for libreadline$SHLIB_SUFFIX])
READLINE_LIB_DIR=""
READLINE_VERSION_SUFFIX=""
for dir in $rl_library $TCLREADLINE_LPATH $prefix/lib/readline; do
    if test -r $dir/libreadline$SHLIB_SUFFIX; then
        READLINE_LIB_DIR=$dir
        break
    fi
    if test -r $dir/libreadline$SHLIB_SUFFIX.4; then
        READLINE_VERSION_SUFFIX=".4"
        READLINE_LIB_DIR=$dir
        break
    fi
    if test -r $dir/libreadline$SHLIB_SUFFIX.4.0; then
        READLINE_VERSION_SUFFIX=".4.0"
        READLINE_LIB_DIR=$dir
        break
    fi
    if test -r $dir/libreadline$SHLIB_SUFFIX.3; then
        READLINE_VERSION_SUFFIX=".3"
        READLINE_LIB_DIR=$dir
        break
    fi
    if test -r $dir/libreadline$SHLIB_SUFFIX.3.0; then
        READLINE_VERSION_SUFFIX=".3.0"
        READLINE_LIB_DIR=$dir
        break
    fi
done

if test -z "$READLINE_LIB_DIR"; then
    AC_MSG_ERROR([
  Can't find libreadline$SHLIB_SUFFIX.
  Use --with-readline-library to specify the directory
  containing libreadline$SHLIB_SUFFIX on your system.])
else
    AC_MSG_RESULT(${READLINE_LIB_DIR}/libreadline${SHLIB_SUFFIX}${READLINE_VERSION_SUFFIX})
fi

READLINE_LIB_DIR="-L${READLINE_LIB_DIR}"



# ---
# check for the terminal library.
# ---

olibs=${LIBS}
AC_ARG_WITH(tlib-library,
            [  --with-tlib-library=DIR
                          where to search for curses / termcap],
            tlib_library=$withval, tlib_library="")

AC_MSG_CHECKING([where to look for the terminal library])
TERMLIB_DIR=""
TERMLIB_VERSION_SUFFIX=""
for dir in $tlib_library $TCLREADLINE_LPATH $prefix/lib/; do
	for tlib in ncurses termlib termcap curses; do
		dnl It's possible that a library is found but it doesn't work
		dnl e.g., shared library that cannot be found
		dnl compile and run a test program to be sure
		dnl echo ""
		dnl echo ""
		LIBS="-L${dir} -l${tlib}"
		AC_TRY_RUN([
#ifdef HAVE_TERMCAP_H
# include <termcap.h>
#endif
main() {char *s; s=(char *)tgoto("%p1%d", 0, 1); exit(0); }],
	res="OK", res="FAIL", res="FAIL")
		if test "$res" = "OK"; then
			TERMLIB_DIR=-L${dir}
			if test "`(uname) 2>/dev/null`" = SunOS &&
				uname -r | grep '^5' >/dev/null; then
				TERMLIB_DIR_R="${TERMLIB_DIR} -R${dir}"
			fi
			TERMLIB=-l${tlib}
			break
		fi
		if test "x${TERMLIB_DIR}" = "x"; then
			AC_MSG_RESULT($LIBS is unusable)
		else
			break
		fi
	done
	if test "x${TERMLIB_DIR}" != "x"; then
		break
	fi
done

if test "x$TERMLIB_DIR" = "x"; then
	AC_MSG_ERROR([
no terminal library found. Please retry with the --with-tlib argument.])
else
	AC_MSG_RESULT(${TERMLIB_DIR} ${TERMLIB})
fi


#--------------------------------------------------------------------
#   Check for appropriate version of gnu readline
#   (older versions of gnu readline don't have
#    rl_callback_read_char ()).
#--------------------------------------------------------------------

LIBS="${READLINE_LIB_DIR} ${TERMLIB_DIR} -lreadline $TERMLIB $olibs"
alternate=no
AC_CHECK_FUNC(
    rl_callback_read_char, alternate=yes, alternate=no
)
if test "$alternate" = "no"; then
    AC_MSG_ERROR(alternate interface not supported by this readline version.)
fi


# check for readline's (macro.c) private variable
# _rl_executing_macro.

AC_MSG_CHECKING([for _rl_executing_macro in -lreadline])
AC_TRY_LINK(,[
    extern char* _rl_executing_macro;
    _rl_executing_macro = (char*) 0;
],
    AC_MSG_RESULT(yes);
    AC_DEFINE(EXECUTING_MACRO_HACK, 1,
    [ Define if _rl_executing_macro is resolved in libreadline. ]),
    AC_MSG_RESULT(no))

# check for readline's rl_cleanup_after_signal

AC_MSG_CHECKING([for rl_cleanup_after_signal() in -lreadline])
AC_TRY_LINK(,[
    extern void rl_cleanup_after_signal();
    rl_cleanup_after_signal();
],
    AC_MSG_RESULT(yes);
    AC_DEFINE(CLEANUP_AFER_SIGNAL, 1,
    [ Define if rl_cleanup_after_signal is resolved in libreadline. ]),
    AC_MSG_RESULT(no))


AC_MSG_CHECKING([for the readline version number])
AC_TRY_RUN([
#include <stdio.h>
int main () {
    FILE *fp = fopen("conftestversion", "w");
    extern char *rl_library_version;
    fprintf(fp, "%s", rl_library_version);
    close(fp);
    return 0;
}],
    READLINE_VERSION=`cat conftestversion`
    AC_MSG_RESULT($READLINE_VERSION),
    AC_MSG_RESULT(failed),
    AC_MSG_RESULT(no cross compiling))




# This is a test
#AC_C_BIGENDIAN

# TODO: check for readline version
# (link testprogram with -lreadline)

AC_SUBST(TCLREADLINE_MAJOR_VERSION)
AC_SUBST(TCLREADLINE_MINOR_VERSION)
AC_SUBST(TCLREADLINE_VERSION)
AC_SUBST(TCLREADLINE_PATCHLEVEL)
AC_SUBST(TCLREADLINE_LIBRARY)
AC_SUBST(TCLREADLINE_PATCHLEVEL_STR)


AC_SUBST(TCL_LIB_DIR)
AC_SUBST(TCL_LIB_SPEC)
AC_SUBST(TCL_INCLUDE_DIR)
AC_SUBST(READLINE_INCLUDE_DIR)

AC_SUBST(CFLAGS)
AC_SUBST(DL_LIBS)
AC_SUBST(LD_FLAGS)
AC_SUBST(RANLIB)

AC_SUBST(MAKE_LIB)
AC_SUBST(SHLIB_CFLAGS)

AC_SUBST(SHLIB_LD)
AC_SUBST(SHLIB_LD_LIBS)

AC_SUBST(SHLIB_SUFFIX)

AC_SUBST(TERMLIB)
AC_SUBST(TERMLIB_DIR)
AC_SUBST(READLINE_LIB_DIR)

AC_SUBST(TCLREADLINE_LIB_FILE)
AC_SUBST(TCLREADLINE_BUILD_LIB_SPEC)
AC_SUBST(TCLREADLINE_LIB_SPEC)

AC_SUBST(TCLREADLINE_LIB_DIR)
AC_SUBST(TCLREADLINE_PKG_FILE)

AC_SUBST(TCLREADLINE_PACKAGE_PATH)


AC_OUTPUT(Makefile tclreadline.h tclreadlineInit.tcl tclreadlineSetup.tcl tclreadlineConfig.sh tclreadline.n pkgIndex.tcl)


#TCL_CC='cc'
#TCL_CFLAGS_DEBUG='-g'
#TCL_CFLAGS_OPTIMIZE='-O'
#TCL_SHARED_BUILD=1
#
#TCL_PREFIX='/usr/local'
#TCL_EXEC_PREFIX='/usr/local'
#
#TCL_SHLIB_CFLAGS='-fPIC'
#TCL_SHLIB_LD='cc -shared'
#TCL_SHLIB_SUFFIX='.so'
#TCL_DL_LIBS='-ldl'
#TCL_LD_FLAGS='-rdynamic'
#TCL_LD_SEARCH_FLAGS=''
#TCL_RANLIB=':'
#TCL_PACKAGE_PATH='/usr/local/lib'