patches/gcc/4.4.0/240-libstdc++-pic.patch
author "Benoît Thébaudeau" <benoit.thebaudeau@advansee.com>
Fri Jan 27 13:31:16 2012 +0100 (2012-01-27)
changeset 2854 a70abdbfa342
permissions -rw-r--r--
complibs/cloog: fix linking with libm

In Ubuntu 11.04 and 11.10, the default options for ld have changed.
--no-copy-dt-needed-entries and --as-needed are now enabled by default, which
causes errors like:

[EXTRA] Checking CLooG/ppl
[DEBUG] ==> Executing: 'make' '-j3' '-s' 'check'
[ALL ] Making check in .
[ALL ] config.status: creating include/cloog/cloog-config.h
[ALL ] config.status: include/cloog/cloog-config.h is unchanged
[ALL ] libtool: link: i686-build_pc-linux-gnu-gcc -Wall -fomit-frame-pointer
-pipe -o cloog cloog.o -L/<snip>/build/static/lib ./.libs/libcloog.a -lm
/<snip>/build/static/lib/libppl_c.a /<snip>/build/static/lib/libpwl.a
/<snip>/build/static/lib/libppl.a /<snip>/build/static/lib/libgmpxx.a
/<snip>/build/static/lib/libgmp.a -lstdc++
[ALL ] /usr/bin/ld: /<snip>/build/static/lib/libppl.a(MIP_Problem.o):
undefined reference to symbol 'sqrt@@GLIBC_2.0'
[ALL ] /usr/bin/ld: note: 'sqrt@@GLIBC_2.0' is defined in DSO
/usr/lib/gcc/i686-linux-gnu/4.6.1/../../../i386-linux-gnu/libm.so so try adding
it to the linker command line
[ALL ] /usr/lib/gcc/i686-linux-gnu/4.6.1/../../../i386-linux-gnu/libm.so:
could not read symbols: Invalid operation
[ALL ] collect2: ld returned 1 exit status
[ERROR] make[2]: *** [cloog] Error 1
[ERROR] make[1]: *** [check-recursive] Error 1

See:
https://wiki.ubuntu.com/NattyNarwhal/ToolchainTransition

This patch fixes these errors by placing '-lm' at the right place on the command
line as libppl requires libm when linking cloog.

Signed-off-by: "Benoît Thébaudeau" <benoit.thebaudeau@advansee.com>
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diff -durN gcc-4.4.0.orig/libstdc++-v3/src/Makefile.am gcc-4.4.0/libstdc++-v3/src/Makefile.am
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--- gcc-4.4.0.orig/libstdc++-v3/src/Makefile.am	2009-04-10 01:23:07.000000000 +0200
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+++ gcc-4.4.0/libstdc++-v3/src/Makefile.am	2009-05-27 21:38:34.000000000 +0200
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@@ -351,6 +351,13 @@
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 	  $(OPT_LDFLAGS) $(SECTION_LDFLAGS) $(AM_CXXFLAGS) $(LTLDFLAGS) -o $@
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+install-exec-local:
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+	pic_objs=`sed -n "s:'::g;s:^pic_object=::p" *.lo | grep -v '^none$$'`; \
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+	if [ x"$$pic_objs" != x ]; then \
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+		$(AR) cru libstdc++_pic.a $$pic_objs $(top_builddir)/libsupc++/*.o || exit 1; \
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+		$(INSTALL_DATA) libstdc++_pic.a $(DESTDIR)$(toolexeclibdir) || exit 1; \
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+	fi
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+
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 # Added bits to build debug library.
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 if GLIBCXX_BUILD_DEBUG
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 all-local: build_debug
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diff -durN gcc-4.4.0.orig/libstdc++-v3/src/Makefile.in gcc-4.4.0/libstdc++-v3/src/Makefile.in
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--- gcc-4.4.0.orig/libstdc++-v3/src/Makefile.in	2009-01-17 03:03:25.000000000 +0100
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+++ gcc-4.4.0/libstdc++-v3/src/Makefile.in	2009-05-27 21:38:34.000000000 +0200
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@@ -726,7 +726,7 @@
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 install-data-am: install-data-local
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-install-exec-am: install-toolexeclibLTLIBRARIES
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+install-exec-am: install-toolexeclibLTLIBRARIES install-exec-local
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 install-info: install-info-am
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@@ -765,7 +765,7 @@
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 	maintainer-clean-generic mostlyclean mostlyclean-compile \
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 	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
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 	tags uninstall uninstall-am uninstall-info-am \
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-	uninstall-toolexeclibLTLIBRARIES
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+	uninstall-toolexeclibLTLIBRARIES install-exec-local
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 # Symbol versioning for shared libraries.
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@@ -942,6 +942,14 @@
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 install_debug:
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 	(cd ${debugdir} && $(MAKE) \
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 	toolexeclibdir=$(glibcxx_toolexeclibdir)/debug install)
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+
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+install-exec-local:
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+	pic_objs=`sed -n "s:'::g;s:^pic_object=::p" *.lo | grep -v '^none$$'`; \
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+	if [ x"$$pic_objs" != x ]; then \
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+		$(AR) cru libstdc++_pic.a $$pic_objs $(top_builddir)/libsupc++/*.o || exit 1; \
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+		$(INSTALL_DATA) libstdc++_pic.a $(DESTDIR)$(toolexeclibdir) || exit 1; \
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+	fi
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+
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 # Tell versions [3.59,3.63) of GNU make to not export all variables.
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 # Otherwise a system limit (for SysV at least) may be exceeded.
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 .NOEXPORT: