patches/gcc/4.4.1/370-bootstrap-target_lib_path.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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ChangeLog:
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2010-01-06  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
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	PR bootstrap/41818
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	* Makefile.tpl (BASE_TARGET_EXPORTS): Only add TARGET_LIB_PATH
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	to $(RPATH_ENVVAR) if bootstrapping.
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	* Makefile.in: Regenerate.
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diff --git a/Makefile.in b/Makefile.in
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index e5fa1d3..dbfc1f0 100644
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--- a/Makefile.in
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+++ b/Makefile.in
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@@ -281,7 +281,10 @@ BASE_TARGET_EXPORTS = \
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 	STRIP="$(STRIP_FOR_TARGET)"; export STRIP; \
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 	WINDRES="$(WINDRES_FOR_TARGET)"; export WINDRES; \
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 	WINDMC="$(WINDMC_FOR_TARGET)"; export WINDMC; \
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-	$(RPATH_ENVVAR)=`echo "$(HOST_LIB_PATH)$(TARGET_LIB_PATH)$$$(RPATH_ENVVAR)" | sed 's,::*,:,g;s,^:*,,;s,:*$$,,'`; export $(RPATH_ENVVAR);
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+@if gcc-bootstrap
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+	$(RPATH_ENVVAR)=`echo "$(TARGET_LIB_PATH)$$$(RPATH_ENVVAR)" | sed 's,::*,:,g;s,^:*,,;s,:*$$,,'`; export $(RPATH_ENVVAR); \
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+@endif gcc-bootstrap
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+	$(RPATH_ENVVAR)=`echo "$(HOST_LIB_PATH)$$$(RPATH_ENVVAR)" | sed 's,::*,:,g;s,^:*,,;s,:*$$,,'`; export $(RPATH_ENVVAR);
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 RAW_CXX_TARGET_EXPORTS = \
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 	$(BASE_TARGET_EXPORTS) \
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diff --git a/Makefile.tpl b/Makefile.tpl
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index 15102e5..452d47c 100644
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--- a/Makefile.tpl
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+++ b/Makefile.tpl
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@@ -284,7 +284,10 @@ BASE_TARGET_EXPORTS = \
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 	STRIP="$(STRIP_FOR_TARGET)"; export STRIP; \
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 	WINDRES="$(WINDRES_FOR_TARGET)"; export WINDRES; \
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 	WINDMC="$(WINDMC_FOR_TARGET)"; export WINDMC; \
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-	$(RPATH_ENVVAR)=`echo "$(HOST_LIB_PATH)$(TARGET_LIB_PATH)$$$(RPATH_ENVVAR)" | sed 's,::*,:,g;s,^:*,,;s,:*$$,,'`; export $(RPATH_ENVVAR);
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+@if gcc-bootstrap
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+	$(RPATH_ENVVAR)=`echo "$(TARGET_LIB_PATH)$$$(RPATH_ENVVAR)" | sed 's,::*,:,g;s,^:*,,;s,:*$$,,'`; export $(RPATH_ENVVAR); \
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+@endif gcc-bootstrap
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+	$(RPATH_ENVVAR)=`echo "$(HOST_LIB_PATH)$$$(RPATH_ENVVAR)" | sed 's,::*,:,g;s,^:*,,;s,:*$$,,'`; export $(RPATH_ENVVAR);
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 RAW_CXX_TARGET_EXPORTS = \
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 	$(BASE_TARGET_EXPORTS) \