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Diffstat (limited to 'lib/autoconf/libs.m4')
| -rw-r--r-- | lib/autoconf/libs.m4 | 478 |
1 files changed, 478 insertions, 0 deletions
diff --git a/lib/autoconf/libs.m4 b/lib/autoconf/libs.m4 new file mode 100644 index 0000000..934c50d --- /dev/null +++ b/lib/autoconf/libs.m4 @@ -0,0 +1,478 @@ +# This file is part of Autoconf. -*- Autoconf -*- +# Checking for libraries. +# Copyright (C) 1992-1996, 1998-2006, 2008-2012 Free Software +# Foundation, Inc. + +# This file is part of Autoconf. 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 3 of the License, 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. +# +# Under Section 7 of GPL version 3, you are granted additional +# permissions described in the Autoconf Configure Script Exception, +# version 3.0, as published by the Free Software Foundation. +# +# You should have received a copy of the GNU General Public License +# and a copy of the Autoconf Configure Script Exception along with +# this program; see the files COPYINGv3 and COPYING.EXCEPTION +# respectively. If not, see <http://www.gnu.org/licenses/>. + +# 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], +[AS_VAR_PUSHDEF([ac_Search], [ac_cv_search_$1])dnl +AC_CACHE_CHECK([for library containing $1], [ac_Search], +[ac_func_search_save_LIBS=$LIBS +AC_LANG_CONFTEST([AC_LANG_CALL([], [$1])]) +for ac_lib in '' $2; do + if test -z "$ac_lib"; then + ac_res="none required" + else + ac_res=-l$ac_lib + LIBS="-l$ac_lib $5 $ac_func_search_save_LIBS" + fi + AC_LINK_IFELSE([], [AS_VAR_SET([ac_Search], [$ac_res])]) + AS_VAR_SET_IF([ac_Search], [break]) +done +AS_VAR_SET_IF([ac_Search], , [AS_VAR_SET([ac_Search], [no])]) +rm conftest.$ac_ext +LIBS=$ac_func_search_save_LIBS]) +AS_VAR_COPY([ac_res], [ac_Search]) +AS_IF([test "$ac_res" != no], + [test "$ac_res" = "none required" || LIBS="$ac_res $LIBS" + $3], + [$4]) +AS_VAR_POPDEF([ac_Search])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_WORD_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_VAR_IF([ac_Lib], [yes], + [m4_default([$3], [AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_LIB$1)) + LIBS="-l$1 $LIBS" +])], + [$4]) +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], [$4])dnl +ac_cv_lib_[]AC_Lib_Name()=ac_cv_lib_[]AC_Lib_Name()_main +m4_popdef([AC_Lib_Name])dnl +]) + + + + +## --------------------------------- ## +## 2. Tests for specific libraries. ## +## --------------------------------- ## + + + +# --------------------- # +# Checks for X window. # +# --------------------- # + + +# _AC_PATH_X_XMKMF +# ---------------- +# Internal subroutine of _AC_PATH_X. +# Set ac_x_includes and/or ac_x_libraries. +m4_define([_AC_PATH_X_XMKMF], +[AC_ARG_VAR(XMKMF, [Path to xmkmf, Makefile generator for X Window System])dnl +rm -f -r conftest.dir +if mkdir conftest.dir; then + cd conftest.dir + cat >Imakefile <<'_ACEOF' +incroot: + @echo incroot='${INCROOT}' +usrlibdir: + @echo usrlibdir='${USRLIBDIR}' +libdir: + @echo libdir='${LIBDIR}' +_ACEOF + if (export CC; ${XMKMF-xmkmf}) >/dev/null 2>/dev/null && test -f Makefile; then + # GNU make sometimes prints "make[1]: Entering ...", which would confuse us. + for ac_var in incroot usrlibdir libdir; do + eval "ac_im_$ac_var=\`\${MAKE-make} $ac_var 2>/dev/null | sed -n 's/^$ac_var=//p'\`" + done + # Open Windows xmkmf reportedly sets LIBDIR instead of USRLIBDIR. + for ac_extension in a so sl dylib la dll; 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 $ac_im_incroot in + /usr/include) ac_x_includes= ;; + *) test -f "$ac_im_incroot/X11/Xos.h" && ac_x_includes=$ac_im_incroot;; + esac + case $ac_im_usrlibdir in + /usr/lib | /usr/lib64 | /lib | /lib64) ;; + *) test -d "$ac_im_usrlibdir" && ac_x_libraries=$ac_im_usrlibdir ;; + esac + fi + cd .. + rm -f -r conftest.dir +fi +])# _AC_PATH_X_XMKMF + + +# _AC_PATH_X_DIRECT +# ----------------- +# Internal subroutine of _AC_PATH_X. +# Set ac_x_includes and/or ac_x_libraries. +m4_define([_AC_PATH_X_DIRECT], +[# Standard set of common directories for X headers. +# Check X11 before X11Rn because it is often a symlink to the current release. +ac_x_header_dirs=' +/usr/X11/include +/usr/X11R7/include +/usr/X11R6/include +/usr/X11R5/include +/usr/X11R4/include + +/usr/include/X11 +/usr/include/X11R7 +/usr/include/X11R6 +/usr/include/X11R5 +/usr/include/X11R4 + +/usr/local/X11/include +/usr/local/X11R7/include +/usr/local/X11R6/include +/usr/local/X11R5/include +/usr/local/X11R4/include + +/usr/local/include/X11 +/usr/local/include/X11R7 +/usr/local/include/X11R6 +/usr/local/include/X11R5 +/usr/local/include/X11R4 + +/usr/X386/include +/usr/x386/include +/usr/XFree86/include/X11 + +/usr/include +/usr/local/include +/usr/unsupported/include +/usr/athena/include +/usr/local/x11r5/include +/usr/lpp/Xamples/include + +/usr/openwin/include +/usr/openwin/share/include' + +if test "$ac_x_includes" = no; then + # Guess where to find include files, by looking for Xlib.h. + # First, try using that file with no special directory specified. + AC_PREPROC_IFELSE([AC_LANG_SOURCE([@%:@include <X11/Xlib.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/Xlib.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="-lX11 $LIBS" + AC_LINK_IFELSE([AC_LANG_PROGRAM([@%:@include <X11/Xlib.h>], + [XrmInitialize ()])], + [LIBS=$ac_save_LIBS +# We can link X programs with no special library path. +ac_x_libraries=], + [LIBS=$ac_save_LIBS +for ac_dir in `AS_ECHO(["$ac_x_includes $ac_x_header_dirs"]) | sed s/include/lib/g` +do + # Don't even attempt the hair of trying to link an X program! + for ac_extension in a so sl dylib la dll; do + if test -r "$ac_dir/libX11.$ac_extension"; then + ac_x_libraries=$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 +case $ac_x_includes,$ac_x_libraries in #( + no,* | *,no | *\'*) + # Didn't find X, or a directory has "'" in its name. + ac_cv_have_x="have_x=no";; #( + *) + # 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'" +esac])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 +AC_MSG_CHECKING([for X]) + +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 + case $x_includes,$x_libraries in #( + *\'*) AC_MSG_ERROR([cannot use X directory names containing ']);; #( + *,NONE | NONE,*) _AC_PATH_X;; #( + *) have_x=yes;; + esac + 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'" + AC_MSG_RESULT([libraries $x_libraries, headers $x_includes]) +fi +])# AC_PATH_X + + + +# AC_PATH_XTRA +# ------------ +# Find additional X libraries, magic flags, etc. +AC_DEFUN([AC_PATH_XTRA], +[AC_REQUIRE([AC_PATH_X])dnl +if test "$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" + # For Solaris; some versions of Sun CC require a space after -R and + # others require no space. Words are not sufficient . . . . + AC_MSG_CHECKING([whether -R must be followed by a space]) + ac_xsave_LIBS=$LIBS; LIBS="$LIBS -R$x_libraries" + ac_xsave_[]_AC_LANG_ABBREV[]_werror_flag=$ac_[]_AC_LANG_ABBREV[]_werror_flag + ac_[]_AC_LANG_ABBREV[]_werror_flag=yes + AC_LINK_IFELSE([AC_LANG_PROGRAM()], + [AC_MSG_RESULT([no]) + X_LIBS="$X_LIBS -R$x_libraries"], + [LIBS="$ac_xsave_LIBS -R $x_libraries" + AC_LINK_IFELSE([AC_LANG_PROGRAM()], + [AC_MSG_RESULT([yes]) + X_LIBS="$X_LIBS -R $x_libraries"], + [AC_MSG_RESULT([neither works])])]) + ac_[]_AC_LANG_ABBREV[]_werror_flag=$ac_xsave_[]_AC_LANG_ABBREV[]_werror_flag + LIBS=$ac_xsave_LIBS + fi + + # Check for system-dependent libraries X programs must link with. + # Do this before checking for the system-independent R6 libraries + # (-lICE), since we may need -lsocket or whatever for X linking. + + if test "$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 |