4db94043cb
Files correlati : Commento : Spostamento in libraries delle librerie esterne di Campo per una maggiore pulizia e organizzazione git-svn-id: svn://10.65.10.50/branches/R_10_00@24150 c028cbd2-c16b-5b4b-a496-9718f37d4682
499 lines
18 KiB
Plaintext
499 lines
18 KiB
Plaintext
# This file is part of Autoconf. -*- Autoconf -*-
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# Checking for libraries.
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# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
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# 2002 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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# 02111-1307, USA.
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# As a special exception, the Free Software Foundation gives unlimited
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# permission to copy, distribute and modify the configure scripts that
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# are the output of Autoconf. You need not follow the terms of the GNU
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# General Public License when using or distributing such scripts, even
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# though portions of the text of Autoconf appear in them. The GNU
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# General Public License (GPL) does govern all other use of the material
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# that constitutes the Autoconf program.
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#
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# Certain portions of the Autoconf source text are designed to be copied
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# (in certain cases, depending on the input) into the output of
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# Autoconf. We call these the "data" portions. The rest of the Autoconf
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# source text consists of comments plus executable code that decides which
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# of the data portions to output in any given case. We call these
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# comments and executable code the "non-data" portions. Autoconf never
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# copies any of the non-data portions into its output.
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#
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# This special exception to the GPL applies to versions of Autoconf
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# released by the Free Software Foundation. When you make and
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# distribute a modified version of Autoconf, you may extend this special
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# exception to the GPL to apply to your modified version as well, *unless*
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# your modified version has the potential to copy into its output some
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# of the text that was the non-data portion of the version that you started
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# with. (In other words, unless your change moves or copies text from
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# the non-data portions to the data portions.) If your modification has
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# such potential, you must delete any notice of this special exception
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# to the GPL from your modified version.
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#
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# Written by David MacKenzie, with help from
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# Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
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# Roland McGrath, Noah Friedman, david d zuhn, and many others.
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# Table of contents
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#
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# 1. Generic tests for libraries
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# 2. Tests for specific libraries
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## --------------------------------- ##
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## 1. Generic tests for libraries.## ##
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## --------------------------------- ##
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# AC_SEARCH_LIBS(FUNCTION, SEARCH-LIBS,
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# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
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# [OTHER-LIBRARIES])
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# --------------------------------------------------------
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# Search for a library defining FUNC, if it's not already available.
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AC_DEFUN([AC_SEARCH_LIBS],
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[AC_CACHE_CHECK([for library containing $1], [ac_cv_search_$1],
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[ac_func_search_save_LIBS=$LIBS
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ac_cv_search_$1=no
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AC_LINK_IFELSE([AC_LANG_CALL([], [$1])],
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[ac_cv_search_$1="none required"])
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if test "$ac_cv_search_$1" = no; then
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for ac_lib in $2; do
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LIBS="-l$ac_lib $5 $ac_func_search_save_LIBS"
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AC_LINK_IFELSE([AC_LANG_CALL([], [$1])],
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[ac_cv_search_$1="-l$ac_lib"
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break])
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done
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fi
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LIBS=$ac_func_search_save_LIBS])
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AS_IF([test "$ac_cv_search_$1" != no],
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[test "$ac_cv_search_$1" = "none required" || LIBS="$ac_cv_search_$1 $LIBS"
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$3],
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[$4])dnl
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])
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# AC_CHECK_LIB(LIBRARY, FUNCTION,
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# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
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# [OTHER-LIBRARIES])
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# ------------------------------------------------------
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#
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# Use a cache variable name containing both the library and function name,
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# because the test really is for library $1 defining function $2, not
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# just for library $1. Separate tests with the same $1 and different $2s
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# may have different results.
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#
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# Note that using directly AS_VAR_PUSHDEF([ac_Lib], [ac_cv_lib_$1_$2])
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# is asking for troubles, since AC_CHECK_LIB($lib, fun) would give
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# ac_cv_lib_$lib_fun, which is definitely not what was meant. Hence
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# the AS_LITERAL_IF indirection.
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#
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# FIXME: This macro is extremely suspicious. It DEFINEs unconditionally,
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# whatever the FUNCTION, in addition to not being a *S macro. Note
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# that the cache does depend upon the function we are looking for.
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#
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# It is on purpose we used `ac_check_lib_save_LIBS' and not just
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# `ac_save_LIBS': there are many macros which don't want to see `LIBS'
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# changed but still want to use AC_CHECK_LIB, so they save `LIBS'.
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# And ``ac_save_LIBS' is too tempting a name, so let's leave them some
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# freedom.
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AC_DEFUN([AC_CHECK_LIB],
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[m4_ifval([$3], , [AH_CHECK_LIB([$1])])dnl
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AS_LITERAL_IF([$1],
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[AS_VAR_PUSHDEF([ac_Lib], [ac_cv_lib_$1_$2])],
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[AS_VAR_PUSHDEF([ac_Lib], [ac_cv_lib_$1''_$2])])dnl
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AC_CACHE_CHECK([for $2 in -l$1], ac_Lib,
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[ac_check_lib_save_LIBS=$LIBS
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LIBS="-l$1 $5 $LIBS"
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AC_LINK_IFELSE([AC_LANG_CALL([], [$2])],
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[AS_VAR_SET(ac_Lib, yes)],
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[AS_VAR_SET(ac_Lib, no)])
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LIBS=$ac_check_lib_save_LIBS])
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AS_IF([test AS_VAR_GET(ac_Lib) = yes],
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[m4_default([$3], [AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_LIB$1))
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LIBS="-l$1 $LIBS"
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])],
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[$4])dnl
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AS_VAR_POPDEF([ac_Lib])dnl
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])# AC_CHECK_LIB
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# AH_CHECK_LIB(LIBNAME)
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# ---------------------
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m4_define([AH_CHECK_LIB],
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[AH_TEMPLATE(AS_TR_CPP(HAVE_LIB$1),
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[Define to 1 if you have the `]$1[' library (-l]$1[).])])
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# AC_HAVE_LIBRARY(LIBRARY,
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# [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
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# [OTHER-LIBRARIES])
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# ---------------------------------------------------------
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#
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# This macro is equivalent to calling `AC_CHECK_LIB' with a FUNCTION
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# argument of `main'. In addition, LIBRARY can be written as any of
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# `foo', `-lfoo', or `libfoo.a'. In all of those cases, the compiler
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# is passed `-lfoo'. However, LIBRARY cannot be a shell variable;
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# it must be a literal name.
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AU_DEFUN([AC_HAVE_LIBRARY],
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[m4_pushdef([AC_Lib_Name],
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m4_bpatsubst(m4_bpatsubst([[$1]],
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[lib\([^\.]*\)\.a], [\1]),
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[-l], []))dnl
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AC_CHECK_LIB(AC_Lib_Name, main, [$2], [$3], [$4])dnl
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ac_cv_lib_[]AC_Lib_Name()=ac_cv_lib_[]AC_Lib_Name()_main
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m4_popdef([AC_Lib_Name])dnl
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])
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## --------------------------------- ##
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## 2. Tests for specific libraries. ##
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## --------------------------------- ##
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# --------------------- #
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# Checks for X window. #
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# --------------------- #
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# _AC_PATH_X_XMKMF
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# ----------------
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# Internal subroutine of _AC_PATH_X.
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# Set ac_x_includes and/or ac_x_libraries.
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m4_define([_AC_PATH_X_XMKMF],
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[rm -fr conftest.dir
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if mkdir conftest.dir; then
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cd conftest.dir
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# Make sure to not put "make" in the Imakefile rules, since we grep it out.
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cat >Imakefile <<'_ACEOF'
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acfindx:
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@echo 'ac_im_incroot="${INCROOT}"; ac_im_usrlibdir="${USRLIBDIR}"; ac_im_libdir="${LIBDIR}"'
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_ACEOF
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if (xmkmf) >/dev/null 2>/dev/null && test -f Makefile; then
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# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
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eval `${MAKE-make} acfindx 2>/dev/null | grep -v make`
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# Open Windows xmkmf reportedly sets LIBDIR instead of USRLIBDIR.
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for ac_extension in a so sl; do
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if test ! -f $ac_im_usrlibdir/libX11.$ac_extension &&
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test -f $ac_im_libdir/libX11.$ac_extension; then
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ac_im_usrlibdir=$ac_im_libdir; break
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fi
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done
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# Screen out bogus values from the imake configuration. They are
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# bogus both because they are the default anyway, and because
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# using them would break gcc on systems where it needs fixed includes.
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case $ac_im_incroot in
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/usr/include) ;;
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*) test -f "$ac_im_incroot/X11/Xos.h" && ac_x_includes=$ac_im_incroot;;
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esac
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case $ac_im_usrlibdir in
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/usr/lib | /lib) ;;
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*) test -d "$ac_im_usrlibdir" && ac_x_libraries=$ac_im_usrlibdir ;;
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esac
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fi
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cd ..
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rm -fr conftest.dir
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fi
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])# _AC_PATH_X_XMKMF
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# _AC_PATH_X_DIRECT
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# -----------------
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# Internal subroutine of _AC_PATH_X.
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# Set ac_x_includes and/or ac_x_libraries.
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m4_define([_AC_PATH_X_DIRECT],
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[# Standard set of common directories for X headers.
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# Check X11 before X11Rn because it is often a symlink to the current release.
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ac_x_header_dirs='
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/usr/X11/include
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/usr/X11R6/include
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/usr/X11R5/include
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/usr/X11R4/include
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/usr/include/X11
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/usr/include/X11R6
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/usr/include/X11R5
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/usr/include/X11R4
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/usr/local/X11/include
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/usr/local/X11R6/include
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/usr/local/X11R5/include
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/usr/local/X11R4/include
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/usr/local/include/X11
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/usr/local/include/X11R6
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/usr/local/include/X11R5
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/usr/local/include/X11R4
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/usr/X386/include
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/usr/x386/include
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/usr/XFree86/include/X11
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/usr/include
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/usr/local/include
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/usr/unsupported/include
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/usr/athena/include
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/usr/local/x11r5/include
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/usr/lpp/Xamples/include
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/usr/openwin/include
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/usr/openwin/share/include'
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if test "$ac_x_includes" = no; then
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# Guess where to find include files, by looking for a specified header file.
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# First, try using that file with no special directory specified.
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AC_PREPROC_IFELSE([AC_LANG_SOURCE([@%:@include <X11/Xlib.h>])],
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[# We can compile using X headers with no special include directory.
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ac_x_includes=],
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[for ac_dir in $ac_x_header_dirs; do
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if test -r "$ac_dir/X11/Xlib.h"; then
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ac_x_includes=$ac_dir
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break
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fi
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done])
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fi # $ac_x_includes = no
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if test "$ac_x_libraries" = no; then
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# Check for the libraries.
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# See if we find them without any special options.
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# Don't add to $LIBS permanently.
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ac_save_LIBS=$LIBS
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LIBS="-lX11 $LIBS"
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AC_LINK_IFELSE([AC_LANG_PROGRAM([@%:@include <X11/Xlib.h>],
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[XrmInitialize ()])],
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[LIBS=$ac_save_LIBS
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# We can link X programs with no special library path.
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ac_x_libraries=],
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[LIBS=$ac_save_LIBS
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for ac_dir in `echo "$ac_x_includes $ac_x_header_dirs" | sed s/include/lib/g`
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do
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# Don't even attempt the hair of trying to link an X program!
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for ac_extension in a so sl; do
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if test -r $ac_dir/libX11.$ac_extension; then
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ac_x_libraries=$ac_dir
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break 2
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fi
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done
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done])
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fi # $ac_x_libraries = no
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])# _AC_PATH_X_DIRECT
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# _AC_PATH_X
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# ----------
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# Compute ac_cv_have_x.
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AC_DEFUN([_AC_PATH_X],
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[AC_CACHE_VAL(ac_cv_have_x,
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[# One or both of the vars are not set, and there is no cached value.
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ac_x_includes=no ac_x_libraries=no
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_AC_PATH_X_XMKMF
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_AC_PATH_X_DIRECT
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if test "$ac_x_includes" = no || test "$ac_x_libraries" = no; then
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# Didn't find X anywhere. Cache the known absence of X.
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ac_cv_have_x="have_x=no"
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else
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# Record where we found X for the cache.
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ac_cv_have_x="have_x=yes \
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ac_x_includes=$ac_x_includes ac_x_libraries=$ac_x_libraries"
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fi])dnl
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])
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# AC_PATH_X
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# ---------
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# If we find X, set shell vars x_includes and x_libraries to the
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# paths, otherwise set no_x=yes.
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# Uses ac_ vars as temps to allow command line to override cache and checks.
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# --without-x overrides everything else, but does not touch the cache.
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AN_HEADER([X11/Xlib.h], [AC_PATH_X])
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AC_DEFUN([AC_PATH_X],
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[dnl Document the X abnormal options inherited from history.
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m4_divert_once([HELP_BEGIN], [
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X features:
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--x-includes=DIR X include files are in DIR
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--x-libraries=DIR X library files are in DIR])dnl
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if test "x$ac_path_x_has_been_run" != xyes; then
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AC_MSG_CHECKING([for X])
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ac_path_x_has_been_run=yes
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AC_ARG_WITH(x, [ --with-x use the X Window System])
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# $have_x is `yes', `no', `disabled', or empty when we do not yet know.
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if test "x$with_x" = xno; then
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# The user explicitly disabled X.
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have_x=disabled
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else
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if test "x$x_includes" != xNONE && test "x$x_libraries" != xNONE; then
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# Both variables are already set.
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have_x=yes
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else
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_AC_PATH_X
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fi
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eval "$ac_cv_have_x"
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fi # $with_x != no
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if test "$have_x" != yes; then
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AC_MSG_RESULT([$have_x])
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no_x=yes
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else
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# If each of the values was on the command line, it overrides each guess.
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test "x$x_includes" = xNONE && x_includes=$ac_x_includes
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test "x$x_libraries" = xNONE && x_libraries=$ac_x_libraries
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# Update the cache value to reflect the command line values.
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ac_cv_have_x="have_x=yes \
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ac_x_includes=$x_includes ac_x_libraries=$x_libraries"
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# It might be that x_includes is empty (headers are found in the
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# standard search path. Then output the corresponding message
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ac_out_x_includes=$x_includes
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test "x$x_includes" = x && ac_out_x_includes="in standard search path"
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AC_MSG_RESULT([libraries $x_libraries, headers $ac_out_x_includes])
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fi
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fi])# AC_PATH_X
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# AC_PATH_XTRA
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# ------------
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# Find additional X libraries, magic flags, etc.
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AC_DEFUN([AC_PATH_XTRA],
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[AC_REQUIRE([AC_PATH_X])dnl
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if test "$no_x" = yes; then
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# Not all programs may use this symbol, but it does not hurt to define it.
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AC_DEFINE([X_DISPLAY_MISSING], 1,
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[Define to 1 if the X Window System is missing or not being used.])
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X_CFLAGS= X_PRE_LIBS= X_LIBS= X_EXTRA_LIBS=
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else
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if test -n "$x_includes"; then
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X_CFLAGS="$X_CFLAGS -I$x_includes"
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fi
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# It would also be nice to do this for all -L options, not just this one.
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if test -n "$x_libraries"; then
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X_LIBS="$X_LIBS -L$x_libraries"
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dnl FIXME: banish uname from this macro!
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# For Solaris; some versions of Sun CC require a space after -R and
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# others require no space. Words are not sufficient . . . .
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case `(uname -sr) 2>/dev/null` in
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"SunOS 5"*)
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AC_MSG_CHECKING([whether -R must be followed by a space])
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ac_xsave_LIBS=$LIBS; LIBS="$LIBS -R$x_libraries"
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AC_LINK_IFELSE([AC_LANG_PROGRAM()], ac_R_nospace=yes, ac_R_nospace=no)
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if test $ac_R_nospace = yes; then
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AC_MSG_RESULT([no])
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X_LIBS="$X_LIBS -R$x_libraries"
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else
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LIBS="$ac_xsave_LIBS -R $x_libraries"
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AC_LINK_IFELSE([AC_LANG_PROGRAM()], ac_R_space=yes, ac_R_space=no)
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if test $ac_R_space = yes; then
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AC_MSG_RESULT([yes])
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X_LIBS="$X_LIBS -R $x_libraries"
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else
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AC_MSG_RESULT([neither works])
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fi
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fi
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LIBS=$ac_xsave_LIBS
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esac
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fi
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# Check for system-dependent libraries X programs must link with.
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# Do this before checking for the system-independent R6 libraries
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# (-lICE), since we may need -lsocket or whatever for X linking.
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if test "$ISC" = yes; then
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X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl_s -linet"
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else
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# Martyn Johnson says this is needed for Ultrix, if the X
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# libraries were built with DECnet support. And Karl Berry says
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# the Alpha needs dnet_stub (dnet does not exist).
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ac_xsave_LIBS="$LIBS"; LIBS="$LIBS $X_LIBS -lX11"
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AC_LINK_IFELSE([AC_LANG_CALL([], [XOpenDisplay])],
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[],
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[AC_CHECK_LIB(dnet, dnet_ntoa, [X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet"])
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if test $ac_cv_lib_dnet_dnet_ntoa = no; then
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AC_CHECK_LIB(dnet_stub, dnet_ntoa,
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[X_EXTRA_LIBS="$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
|