--- /dev/null
+# This file is part of Autoconf. -*- Autoconf -*-
+# Checking for libraries.
+# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
+# 2002 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+# 02111-1307, USA.
+
+# As a special exception, the Free Software Foundation gives unlimited
+# permission to copy, distribute and modify the configure scripts that
+# are the output of Autoconf. You need not follow the terms of the GNU
+# General Public License when using or distributing such scripts, even
+# though portions of the text of Autoconf appear in them. The GNU
+# General Public License (GPL) does govern all other use of the material
+# that constitutes the Autoconf program.
+#
+# Certain portions of the Autoconf source text are designed to be copied
+# (in certain cases, depending on the input) into the output of
+# Autoconf. We call these the "data" portions. The rest of the Autoconf
+# source text consists of comments plus executable code that decides which
+# of the data portions to output in any given case. We call these
+# comments and executable code the "non-data" portions. Autoconf never
+# copies any of the non-data portions into its output.
+#
+# This special exception to the GPL applies to versions of Autoconf
+# released by the Free Software Foundation. When you make and
+# distribute a modified version of Autoconf, you may extend this special
+# exception to the GPL to apply to your modified version as well, *unless*
+# your modified version has the potential to copy into its output some
+# of the text that was the non-data portion of the version that you started
+# with. (In other words, unless your change moves or copies text from
+# the non-data portions to the data portions.) If your modification has
+# such potential, you must delete any notice of this special exception
+# to the GPL from your modified version.
+#
+# Written by David MacKenzie, with help from
+# Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
+# Roland McGrath, Noah Friedman, david d zuhn, and many others.
+
+# Table of contents
+#
+# 1. Generic tests for libraries
+# 2. Tests for specific libraries
+
+
+## --------------------------------- ##
+## 1. Generic tests for libraries.## ##
+## --------------------------------- ##
+
+
+
+# AC_SEARCH_LIBS(FUNCTION, SEARCH-LIBS,
+# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
+# [OTHER-LIBRARIES])
+# --------------------------------------------------------
+# Search for a library defining FUNC, if it's not already available.
+AC_DEFUN([AC_SEARCH_LIBS],
+[AC_CACHE_CHECK([for library containing $1], [ac_cv_search_$1],
+[ac_func_search_save_LIBS=$LIBS
+ac_cv_search_$1=no
+AC_LINK_IFELSE([AC_LANG_CALL([], [$1])],
+ [ac_cv_search_$1="none required"])
+if test "$ac_cv_search_$1" = no; then
+ for ac_lib in $2; do
+ LIBS="-l$ac_lib $5 $ac_func_search_save_LIBS"
+ AC_LINK_IFELSE([AC_LANG_CALL([], [$1])],
+ [ac_cv_search_$1="-l$ac_lib"
+break])
+ done
+fi
+LIBS=$ac_func_search_save_LIBS])
+AS_IF([test "$ac_cv_search_$1" != no],
+ [test "$ac_cv_search_$1" = "none required" || LIBS="$ac_cv_search_$1 $LIBS"
+ $3],
+ [$4])dnl
+])
+
+
+
+# AC_CHECK_LIB(LIBRARY, FUNCTION,
+# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
+# [OTHER-LIBRARIES])
+# ------------------------------------------------------
+#
+# Use a cache variable name containing both the library and function name,
+# because the test really is for library $1 defining function $2, not
+# just for library $1. Separate tests with the same $1 and different $2s
+# may have different results.
+#
+# Note that using directly AS_VAR_PUSHDEF([ac_Lib], [ac_cv_lib_$1_$2])
+# is asking for troubles, since AC_CHECK_LIB($lib, fun) would give
+# ac_cv_lib_$lib_fun, which is definitely not what was meant. Hence
+# the AS_LITERAL_IF indirection.
+#
+# FIXME: This macro is extremely suspicious. It DEFINEs unconditionally,
+# whatever the FUNCTION, in addition to not being a *S macro. Note
+# that the cache does depend upon the function we are looking for.
+#
+# It is on purpose we used `ac_check_lib_save_LIBS' and not just
+# `ac_save_LIBS': there are many macros which don't want to see `LIBS'
+# changed but still want to use AC_CHECK_LIB, so they save `LIBS'.
+# And ``ac_save_LIBS' is too tempting a name, so let's leave them some
+# freedom.
+AC_DEFUN([AC_CHECK_LIB],
+[m4_ifval([$3], , [AH_CHECK_LIB([$1])])dnl
+AS_LITERAL_IF([$1],
+ [AS_VAR_PUSHDEF([ac_Lib], [ac_cv_lib_$1_$2])],
+ [AS_VAR_PUSHDEF([ac_Lib], [ac_cv_lib_$1''_$2])])dnl
+AC_CACHE_CHECK([for $2 in -l$1], ac_Lib,
+[ac_check_lib_save_LIBS=$LIBS
+LIBS="-l$1 $5 $LIBS"
+AC_LINK_IFELSE([AC_LANG_CALL([], [$2])],
+ [AS_VAR_SET(ac_Lib, yes)],
+ [AS_VAR_SET(ac_Lib, no)])
+LIBS=$ac_check_lib_save_LIBS])
+AS_IF([test AS_VAR_GET(ac_Lib) = yes],
+ [m4_default([$3], [AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_LIB$1))
+ LIBS="-l$1 $LIBS"
+])],
+ [$4])dnl
+AS_VAR_POPDEF([ac_Lib])dnl
+])# AC_CHECK_LIB
+
+
+# AH_CHECK_LIB(LIBNAME)
+# ---------------------
+m4_define([AH_CHECK_LIB],
+[AH_TEMPLATE(AS_TR_CPP(HAVE_LIB$1),
+ [Define to 1 if you have the `]$1[' library (-l]$1[).])])
+
+
+# AC_HAVE_LIBRARY(LIBRARY,
+# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
+# [OTHER-LIBRARIES])
+# ---------------------------------------------------------
+#
+# This macro is equivalent to calling `AC_CHECK_LIB' with a FUNCTION
+# argument of `main'. In addition, LIBRARY can be written as any of
+# `foo', `-lfoo', or `libfoo.a'. In all of those cases, the compiler
+# is passed `-lfoo'. However, LIBRARY cannot be a shell variable;
+# it must be a literal name.
+AU_DEFUN([AC_HAVE_LIBRARY],
+[m4_pushdef([AC_Lib_Name],
+ m4_bpatsubst(m4_bpatsubst([[$1]],
+ [lib\([^\.]*\)\.a], [\1]),
+ [-l], []))dnl
+AC_CHECK_LIB(AC_Lib_Name, main, [$2], [$3], [$4])dnl
+ac_cv_lib_[]AC_Lib_Name()=ac_cv_lib_[]AC_Lib_Name()_main
+m4_popdef([AC_Lib_Name])dnl
+])
+
+
+
+
+## --------------------------------- ##
+## 2. Tests for specific libraries. ##
+## --------------------------------- ##
+
+
+
+# --------------------- #
+# Checks for X window. #
+# --------------------- #
+
+
+# _AC_PATH_X_XMKMF
+# ----------------
+# Internal subroutine of _AC_PATH_X.
+# Set ac_x_includes and/or ac_x_libraries.
+m4_define([_AC_PATH_X_XMKMF],
+[rm -fr conftest.dir
+if mkdir conftest.dir; then
+ cd conftest.dir
+ # Make sure to not put "make" in the Imakefile rules, since we grep it out.
+ cat >Imakefile <<'_ACEOF'
+acfindx:
+ @echo 'ac_im_incroot="${INCROOT}"; ac_im_usrlibdir="${USRLIBDIR}"; ac_im_libdir="${LIBDIR}"'
+_ACEOF
+ if (xmkmf) >/dev/null 2>/dev/null && test -f Makefile; then
+ # GNU make sometimes prints "make[1]: Entering...", which would confuse us.
+ eval `${MAKE-make} acfindx 2>/dev/null | grep -v make`
+ # Open Windows xmkmf reportedly sets LIBDIR instead of USRLIBDIR.
+ for ac_extension in a so sl; do
+ if test ! -f $ac_im_usrlibdir/libX11.$ac_extension &&
+ test -f $ac_im_libdir/libX11.$ac_extension; then
+ ac_im_usrlibdir=$ac_im_libdir; break
+ fi
+ done
+ # Screen out bogus values from the imake configuration. They are
+ # bogus both because they are the default anyway, and because
+ # using them would break gcc on systems where it needs fixed includes.
+ case $ac_im_incroot in
+ /usr/include) ;;
+ *) test -f "$ac_im_incroot/X11/Xos.h" && ac_x_includes=$ac_im_incroot;;
+ esac
+ case $ac_im_usrlibdir in
+ /usr/lib | /lib) ;;
+ *) test -d "$ac_im_usrlibdir" && ac_x_libraries=$ac_im_usrlibdir ;;
+ esac
+ fi
+ cd ..
+ rm -fr conftest.dir
+fi
+])# _AC_PATH_X_XMKMF
+
+
+# _AC_PATH_X_DIRECT
+# -----------------
+# Internal subroutine of _AC_PATH_X.
+# Set ac_x_includes and/or ac_x_libraries.
+m4_define([_AC_PATH_X_DIRECT],
+[# Standard set of common directories for X headers.
+# Check X11 before X11Rn because it is often a symlink to the current release.
+ac_x_header_dirs='
+/usr/X11/include
+/usr/X11R6/include
+/usr/X11R5/include
+/usr/X11R4/include
+
+/usr/include/X11
+/usr/include/X11R6
+/usr/include/X11R5
+/usr/include/X11R4
+
+/usr/local/X11/include
+/usr/local/X11R6/include
+/usr/local/X11R5/include
+/usr/local/X11R4/include
+
+/usr/local/include/X11
+/usr/local/include/X11R6
+/usr/local/include/X11R5
+/usr/local/include/X11R4
+
+/usr/X386/include
+/usr/x386/include
+/usr/XFree86/include/X11
+
+/usr/include
+/usr/local/include
+/usr/unsupported/include
+/usr/athena/include
+/usr/local/x11r5/include
+/usr/lpp/Xamples/include
+
+/usr/openwin/include
+/usr/openwin/share/include'
+
+if test "$ac_x_includes" = no; then
+ # Guess where to find include files, by looking for a specified header file.
+ # First, try using that file with no special directory specified.
+ AC_PREPROC_IFELSE([AC_LANG_SOURCE([@%:@include <X11/Intrinsic.h>])],
+[# We can compile using X headers with no special include directory.
+ac_x_includes=],
+[for ac_dir in $ac_x_header_dirs; do
+ if test -r "$ac_dir/X11/Intrinsic.h"; then
+ ac_x_includes=$ac_dir
+ break
+ fi
+done])
+fi # $ac_x_includes = no
+
+if test "$ac_x_libraries" = no; then
+ # Check for the libraries.
+ # See if we find them without any special options.
+ # Don't add to $LIBS permanently.
+ ac_save_LIBS=$LIBS
+ LIBS="-lXt $LIBS"
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([@%:@include <X11/Intrinsic.h>],
+ [XtMalloc (0)])],
+ [LIBS=$ac_save_LIBS
+# We can link X programs with no special library path.
+ac_x_libraries=],
+ [LIBS=$ac_save_LIBS
+for ac_dir in `echo "$ac_x_includes $ac_x_header_dirs" | sed s/include/lib/g`
+do
+ # Don't even attempt the hair of trying to link an X program!
+ for ac_extension in a so sl; do
+ if test -r $ac_dir/libXt.$ac_extension; then
+ ac_x_libraries=$ac_dir
+ break 2
+ fi
+ done
+done])
+fi # $ac_x_libraries = no
+])# _AC_PATH_X_DIRECT
+
+
+# _AC_PATH_X
+# ----------
+# Compute ac_cv_have_x.
+AC_DEFUN([_AC_PATH_X],
+[AC_CACHE_VAL(ac_cv_have_x,
+[# One or both of the vars are not set, and there is no cached value.
+ac_x_includes=no ac_x_libraries=no
+_AC_PATH_X_XMKMF
+_AC_PATH_X_DIRECT
+if test "$ac_x_includes" = no || test "$ac_x_libraries" = no; then
+ # Didn't find X anywhere. Cache the known absence of X.
+ ac_cv_have_x="have_x=no"
+else
+ # Record where we found X for the cache.
+ ac_cv_have_x="have_x=yes \
+ ac_x_includes=$ac_x_includes ac_x_libraries=$ac_x_libraries"
+fi])dnl
+])
+
+
+# AC_PATH_X
+# ---------
+# If we find X, set shell vars x_includes and x_libraries to the
+# paths, otherwise set no_x=yes.
+# Uses ac_ vars as temps to allow command line to override cache and checks.
+# --without-x overrides everything else, but does not touch the cache.
+AN_HEADER([X11/Xlib.h], [AC_PATH_X])
+AC_DEFUN([AC_PATH_X],
+[dnl Document the X abnormal options inherited from history.
+m4_divert_once([HELP_BEGIN], [
+X features:
+ --x-includes=DIR X include files are in DIR
+ --x-libraries=DIR X library files are in DIR])dnl
+
+if test "x$ac_path_x_has_been_run" != xyes; then
+ AC_MSG_CHECKING([for X])
+
+ac_path_x_has_been_run=yes
+AC_ARG_WITH(x, [ --with-x use the X Window System])
+# $have_x is `yes', `no', `disabled', or empty when we do not yet know.
+if test "x$with_x" = xno; then
+ # The user explicitly disabled X.
+ have_x=disabled
+else
+ if test "x$x_includes" != xNONE && test "x$x_libraries" != xNONE; then
+ # Both variables are already set.
+ have_x=yes
+ else
+ _AC_PATH_X
+ fi
+ eval "$ac_cv_have_x"
+fi # $with_x != no
+
+if test "$have_x" != yes; then
+ AC_MSG_RESULT([$have_x])
+ no_x=yes
+else
+ # If each of the values was on the command line, it overrides each guess.
+ test "x$x_includes" = xNONE && x_includes=$ac_x_includes
+ test "x$x_libraries" = xNONE && x_libraries=$ac_x_libraries
+ # Update the cache value to reflect the command line values.
+ ac_cv_have_x="have_x=yes \
+ ac_x_includes=$x_includes ac_x_libraries=$x_libraries"
+ # It might be that x_includes is empty (headers are found in the
+ # standard search path. Then output the corresponding message
+ ac_out_x_includes=$x_includes
+ test "x$x_includes" = x && ac_out_x_includes="in standard search path"
+ AC_MSG_RESULT([libraries $x_libraries, headers $ac_out_x_includes])
+fi
+
+fi])# AC_PATH_X
+
+
+
+# AC_PATH_XTRA
+# ------------
+# Find additional X libraries, magic flags, etc.
+AC_DEFUN([AC_PATH_XTRA],
+[AC_REQUIRE([AC_PATH_X])dnl
+if test "$no_x" = yes; then
+ # Not all programs may use this symbol, but it does not hurt to define it.
+ AC_DEFINE([X_DISPLAY_MISSING], 1,
+ [Define to 1 if the X Window System is missing or not being used.])
+ X_CFLAGS= X_PRE_LIBS= X_LIBS= X_EXTRA_LIBS=
+else
+ if test -n "$x_includes"; then
+ X_CFLAGS="$X_CFLAGS -I$x_includes"
+ fi
+
+ # It would also be nice to do this for all -L options, not just this one.
+ if test -n "$x_libraries"; then
+ X_LIBS="$X_LIBS -L$x_libraries"
+dnl FIXME: banish uname from this macro!
+ # For Solaris; some versions of Sun CC require a space after -R and
+ # others require no space. Words are not sufficient . . . .
+ case `(uname -sr) 2>/dev/null` in
+ "SunOS 5"*)
+ AC_MSG_CHECKING([whether -R must be followed by a space])
+ ac_xsave_LIBS=$LIBS; LIBS="$LIBS -R$x_libraries"
+ AC_LINK_IFELSE([AC_LANG_PROGRAM()], ac_R_nospace=yes, ac_R_nospace=no)
+ if test $ac_R_nospace = yes; then
+ AC_MSG_RESULT([no])
+ X_LIBS="$X_LIBS -R$x_libraries"
+ else
+ LIBS="$ac_xsave_LIBS -R $x_libraries"
+ AC_LINK_IFELSE([AC_LANG_PROGRAM()], ac_R_space=yes, ac_R_space=no)
+ if test $ac_R_space = yes; then
+ AC_MSG_RESULT([yes])
+ X_LIBS="$X_LIBS -R $x_libraries"
+ else
+ AC_MSG_RESULT([neither works])
+ fi
+ fi
+ LIBS=$ac_xsave_LIBS
+ esac
+ fi
+
+ # Check for system-dependent libraries X programs must link with.
+ # Do this before checking for the system-independent R6 libraries
+ # (-lICE), since we may need -lsocket or whatever for X linking.
+
+ if test "$ISC" = yes; then
+ X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl_s -linet"
+ else
+ # Martyn Johnson says this is needed for Ultrix, if the X
+ # libraries were built with DECnet support. And Karl Berry says
+ # the Alpha needs dnet_stub (dnet does not exist).
+ ac_xsave_LIBS="$LIBS"; LIBS="$LIBS $X_LIBS -lX11"
+ AC_LINK_IFELSE([AC_LANG_CALL([], [XOpenDisplay])],
+ [],
+ [AC_CHECK_LIB(dnet, dnet_ntoa, [X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet"])
+ if test $ac_cv_lib_dnet_dnet_ntoa = no; then
+ AC_CHECK_LIB(dnet_stub, dnet_ntoa,
+ [X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet_stub"])
+ fi])
+ LIBS="$ac_xsave_LIBS"
+
+ # msh@cis.ufl.edu says -lnsl (and -lsocket) are needed for his 386/AT,
+ # to get the SysV transport functions.
+ # Chad R. Larson says the Pyramis MIS-ES running DC/OSx (SVR4)
+ # needs -lnsl.
+ # The nsl library prevents programs from opening the X display
+ # on Irix 5.2, according to T.E. Dickey.
+ # The functions gethostbyname, getservbyname, and inet_addr are
+ # in -lbsd on LynxOS 3.0.1/i386, according to Lars Hecking.
+ AC_CHECK_FUNC(gethostbyname)
+ if test $ac_cv_func_gethostbyname = no; then
+ AC_CHECK_LIB(nsl, gethostbyname, X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl")
+ if test $ac_cv_lib_nsl_gethostbyname = no; then
+ AC_CHECK_LIB(bsd, gethostbyname, X_EXTRA_LIBS="$X_EXTRA_LIBS -lbsd")
+ fi
+ fi
+
+ # lieder@skyler.mavd.honeywell.com says without -lsocket,
+ # socket/setsockopt and other routines are undefined under SCO ODT
+ # 2.0. But -lsocket is broken on IRIX 5.2 (and is not necessary
+ # on later versions), says Simon Leinen: it contains gethostby*
+ # variants that don't use the name server (or something). -lsocket
+ # must be given before -lnsl if both are needed. We assume that
+ # if connect needs -lnsl, so does gethostbyname.
+ AC_CHECK_FUNC(connect)
+ if test $ac_cv_func_connect = no; then
+ AC_CHECK_LIB(socket, connect, X_EXTRA_LIBS="-lsocket $X_EXTRA_LIBS", ,
+ $X_EXTRA_LIBS)
+ fi
+
+ # Guillermo Gomez says -lposix is necessary on A/UX.
+ AC_CHECK_FUNC(remove)
+ if test $ac_cv_func_remove = no; then
+ AC_CHECK_LIB(posix, remove, X_EXTRA_LIBS="$X_EXTRA_LIBS -lposix")
+ fi
+
+ # BSDI BSD/OS 2.1 needs -lipc for XOpenDisplay.
+ AC_CHECK_FUNC(shmat)
+ if test $ac_cv_func_shmat = no; then
+ AC_CHECK_LIB(ipc, shmat, X_EXTRA_LIBS="$X_EXTRA_LIBS -lipc")
+ fi
+ fi
+
+ # Check for libraries that X11R6 Xt/Xaw programs need.
+ ac_save_LDFLAGS=$LDFLAGS
+ test -n "$x_libraries" && LDFLAGS="$LDFLAGS -L$x_libraries"
+ # SM needs ICE to (dynamically) link under SunOS 4.x (so we have to
+ # check for ICE first), but we must link in the order -lSM -lICE or
+ # we get undefined symbols. So assume we have SM if we have ICE.
+ # These have to be linked with before -lX11, unlike the other
+ # libraries we check for below, so use a different variable.
+ # John Interrante, Karl Berry
+ AC_CHECK_LIB(ICE, IceConnectionNumber,
+ [X_PRE_LIBS="$X_PRE_LIBS -lSM -lICE"], , $X_EXTRA_LIBS)
+ LDFLAGS=$ac_save_LDFLAGS
+
+fi
+AC_SUBST(X_CFLAGS)dnl
+AC_SUBST(X_PRE_LIBS)dnl
+AC_SUBST(X_LIBS)dnl
+AC_SUBST(X_EXTRA_LIBS)dnl
+])# AC_PATH_XTRA
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