patches/gcc/4.2.1/300-libstdc++-nostdlib-linking.patch
author Anthony Foiani <anthony.foiani@gmail.com>
Thu Oct 07 22:37:06 2010 +0200 (2010-10-07)
changeset 2138 2242d87c5404
permissions -rw-r--r--
scripts: always create lib32 and lib64 symlinks

Unconditionally create the lib32 -> lib/ and lib64 -> lib/ symlinks.

This is reportedly a fix to build a toolchain for a 32-bit target on
a 'pure' 64-bit host (eg. on Fedora FC12, host libs are in lib64/,
and there is no lib -> lib64 symlink, as we can see on other distors,
as Debian). As gcc only puts static host lib in lib64/ (along with
target files in subdirs), we can safely create the symlinks.

Also note that the symlinks are summarily removed at the end
of the build.

Signed-off-by: Anthony Foiani <anthony.foiani@gmail.com>
[Yann E. MORIN: fix a comment, rephrase the commit log]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
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On 20090401, Ted Jordan writes:
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 The generated libtool for building libstdc++ adds the -nostdlib option to the
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 g++ command for linking but doesn't add -lgcc.  This causes a "hidden symbol"
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 error when linking against the libstdc++ shared object.  This patch adds gcc
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 to the list of libraries linked against when linking libstdc++.
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Index: gcc-4.2.1/ltcf-cxx.sh
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===================================================================
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--- gcc-4.2.1.orig/ltcf-cxx.sh	2005-07-15 21:30:53.000000000 -0500
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+++ gcc-4.2.1/ltcf-cxx.sh	2009-04-02 09:30:34.000000000 -0500
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@@ -78,8 +78,8 @@
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   # to be the same.
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   if test "$with_gnu_ld" = yes; then
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-    archive_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
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-    archive_expsym_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
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+    archive_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -lgcc ${wl}-soname $wl$soname -o $lib'
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+    archive_expsym_cmds='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -lgcc ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
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     hardcode_libdir_flag_spec='${wl}--rpath ${wl}$libdir'
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     export_dynamic_flag_spec='${wl}--export-dynamic'