#### This script is meant to be sourced by ltconfig. # $Id: ltcf-c.sh,v 1.1.2.9 2000/07/24 05:28:14 oliva Exp $ # ltcf-c.sh - Create a C compiler specific configuration # # Copyright (C) 1996-2000 Free Software Foundation, Inc. # Originally by Gordon Matzigkeit , 1996 # # This file 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 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. # # 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 to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that program. # Source file extension for C test sources. ac_ext=c # Object file extension for compiled C test sources. objext=o # Code to be used in simple compile tests lt_simple_compile_test_code="int some_variable = 0;" # Code to be used in simple link tests lt_simple_link_test_code='main(){return(0);}' ## Linker Characteristics case "$host_os" in cygwin* | mingw*) # FIXME: the MSVC++ port hasn't been tested in a loooong time # When not using gcc, we currently assume that we are using # Microsoft Visual C++. if test "$with_gcc" != yes; then with_gnu_ld=no fi ;; esac ld_shlibs=yes if test "$with_gnu_ld" = yes; then # If archive_cmds runs LD, not CC, wlarc should be empty wlarc='${wl}' # See if GNU ld supports shared libraries. case "$host_os" in aix3* | aix4*) # On AIX, the GNU linker is very broken ld_shlibs=no cat <&2 *** Warning: the GNU linker, at least up to release 2.9.1, is reported *** to be unable to reliably create shared libraries on AIX. *** Therefore, libtool is disabling shared libraries support. If you *** really care for shared libraries, you may want to modify your PATH *** so that a non-GNU linker is found, and then restart. EOF ;; amigaos*) archive_cmds='$rm $output_objdir/a2ixlibrary.data~$echo "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$echo "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$echo "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$echo "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)' hardcode_libdir_flag_spec='-L$libdir' hardcode_minus_L=yes # Samuel A. Falvo II reports # that the semantics of dynamic libraries on AmigaOS, at least up # to version 4, is to share data among multiple programs linked # with the same dynamic library. 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};" >> $lib.exp~ $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$rm $lib.exp' hardcode_libdir_flag_spec= hardcode_shlibpath_var=no runpath_var='LD_RUN_PATH' ;; uts4*) archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' hardcode_libdir_flag_spec='-L$libdir' hardcode_shlibpath_var=no ;; dgux*) archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' hardcode_libdir_flag_spec='-L$libdir' hardcode_shlibpath_var=no ;; sysv4*MP*) if test -d /usr/nec; then archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' hardcode_shlibpath_var=no runpath_var=LD_RUN_PATH hardcode_runpath_var=yes ld_shlibs=yes fi ;; sysv4.2uw2*) archive_cmds='$LD -G -o $lib $libobjs $deplibs $linker_flags' hardcode_direct=yes hardcode_minus_L=no hardcode_shlibpath_var=no hardcode_runpath_var=yes runpath_var=LD_RUN_PATH ;; unixware7*) archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags' runpath_var='LD_RUN_PATH' hardcode_shlibpath_var=no ;; *) ld_shlibs=no ;; esac fi ## Compiler Characteristics: PIC flags, static flags, etc if test "X${ac_cv_prog_cc_pic+set}" = Xset; then echo $ac_n "(cached) $ac_c" 1>&6 else ac_cv_prog_cc_pic= ac_cv_prog_cc_shlib= ac_cv_prog_cc_wl= ac_cv_prog_cc_static= ac_cv_prog_cc_no_builtin= ac_cv_prog_cc_can_build_shared=$can_build_shared if test "$with_gcc" = yes; then ac_cv_prog_cc_wl='-Wl,' ac_cv_prog_cc_static='-static' case "$host_os" in beos* | irix5* | irix6* | osf3* | osf4* | osf5*) # PIC is the default for these OSes. ;; aix*) # Below there is a dirty hack to force normal static linking with -ldl # The problem is because libdl dynamically linked with both libc and # libC (AIX C++ library), which obviously doesn't included in libraries # list by gcc. This cause undefined symbols with -static flags. # This hack allows C programs to be linked with "-static -ldl", but # we not sure about C++ programs. ac_cv_prog_cc_static="$ac_cv_prog_cc_static ${ac_cv_prog_cc_wl}-lC" ;; cygwin* | mingw* | os2*) # This hack is so that the source file can tell whether it is being # built for inclusion in a dll (and should export symbols for example). ac_cv_prog_cc_pic='-DDLL_EXPORT' ;; amigaos*) # FIXME: we need at least 68020 code to build shared libraries, but # adding the `-m68020' flag to GCC prevents building anything better, # like `-m68040'. ac_cv_prog_cc_pic='-m68020 -resident32 -malways-restore-a4' ;; sysv4*MP*) if test -d /usr/nec; then ac_cv_prog_cc_pic=-Kconform_pic fi ;; *) ac_cv_prog_cc_pic='-fPIC' ;; esac else # PORTME Check for PIC flags for the system compiler. case "$host_os" in aix3* | aix4*) # All AIX code is PIC. ac_cv_prog_cc_static='-bnso -bI:/lib/syscalls.exp' ;; hpux9* | hpux10* | hpux11*) # Is there a better ac_cv_prog_cc_static that works with the bundled CC? ac_cv_prog_cc_wl='-Wl,' ac_cv_prog_cc_static="${ac_cv_prog_cc_wl}-a ${ac_cv_prog_cc_wl}archive" ac_cv_prog_cc_pic='+Z' ;; irix5* | irix6*) ac_cv_prog_cc_wl='-Wl,' ac_cv_prog_cc_static='-non_shared' # PIC (with -KPIC) is the default. ;; cygwin* | mingw* | os2*) # This hack is so that the source file can tell whether it is being # built for inclusion in a dll (and should export symbols for example). ac_cv_prog_cc_pic='-DDLL_EXPORT' ;; osf3* | osf4* | osf5*) # All OSF/1 code is PIC. ac_cv_prog_cc_wl='-Wl,' ac_cv_prog_cc_static='-non_shared' ;; sco3.2v5*) ac_cv_prog_cc_pic='-Kpic' ac_cv_prog_cc_static='-dn' ac_cv_prog_cc_shlib='-belf' ;; solaris*) ac_cv_prog_cc_pic='-KPIC' ac_cv_prog_cc_static='-Bstatic' ac_cv_prog_cc_wl='-Wl,' ;; sunos4*) ac_cv_prog_cc_pic='-PIC' ac_cv_prog_cc_static='-Bstatic' ac_cv_prog_cc_wl='-Qoption ld ' ;; sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*) ac_cv_prog_cc_pic='-KPIC' ac_cv_prog_cc_static='-Bstatic' ac_cv_prog_cc_wl='-Wl,' ;; uts4*) ac_cv_prog_cc_pic='-pic' ac_cv_prog_cc_static='-Bstatic' ;; sysv4*MP*) if test -d /usr/nec ;then ac_cv_prog_cc_pic='-Kconform_pic' ac_cv_prog_cc_static='-Bstatic' fi ;; *) ac_cv_prog_cc_can_build_shared=no ;; esac fi ac_cv_prog_cc_pic="$ac_cv_prog_cc_pic -DPIC" fi need_lc=yes if test "$enable_shared" = yes && test "$with_gcc" = yes; then case "$archive_cmds" in *'~'*) # FIXME: we may have to deal with multi-command sequences. ;; '$CC '*) # Test whether the compiler implicitly links with -lc since on some # systems, -lgcc has to come before -lc. If gcc already passes -lc # to ld, don't add -lc before -lgcc. echo $ac_n "checking whether -lc is implicitly linked in... $ac_c" 1>&6 if eval "test \"`echo '$''{'ac_cv_archive_cmds_needs_lc'+set}'`\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 need_lc=$ac_cv_archive_cmds_needs_lc else $rm conftest* echo "static int dummy;" > conftest.$ac_ext if { (eval echo $progname:@LINENO@: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>conftest.err; }; then # Append any warnings to the config.log. cat conftest.err 1>&5 soname=conftest lib=conftest libobjs=conftest.o deplibs= compiler_flags=-v linker_flags=-v verstring= output_objdir=. libname=conftest allow_undefined_flag= if { (eval echo $progname:@LINENO@: \"$archive_cmds\") 1>&5; (eval $archive_cmds) 2>&1 | grep " -lc " 1>&5 ; }; then need_lc=no fi else cat conftest.err 1>&5 fi fi $rm conftest* echo "$ac_t$need_lc" 1>&6 ;; esac fi ac_cv_archive_cmds_needs_lc=$need_lc