http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51720
Bug #: 51720
Summary: Build issue. stage1 ldflags not correctly used
Classification: Unclassified
Product: gcc
Version: 4.6.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: ramon.garcia.fre...@gmx.com
In order to build GCC with shared libraries libcloog and libppl, that have been
previously installed in /opt/gcc-4.6/lib, one executes configure with the
following options
../gcc-4.6.2/configure --prefix=/opt/gcc-4.6 --with-ppl=/opt/gcc-4.6
--with-cloog=/opt/gcc-4.6 --enable-gold --enable-languages=c,c++,ada,fortran,go
-with-stage1-ldflags="-Wl,-rpath=/opt/gcc-4.6/lib -static-libgcc
-static-libstdc++" --with-boot-ldflags="-Wl,-rpath=/opt/gcc-4.6/lib
-static-libgcc -static-libstdc++"
But the compiler built in the stage1 phase does not find libppl and libcloog:
> ./gcc/cc1
./gcc/cc1: error while loading shared libraries: libcloog.so.0: cannot open
shared object file: No such file or directory
becuase the stage1 ldflags are not correctly passed
The issue comes from the top level Makefile. The invocation of the stage1 build
correctly passes stage1 ldflags as part of the HOST_EXPORTS. But in the submake
invocation, it also passes $(BASE_FLAGS_TO_PASS), that sets LDFLAGS to empty,
and has higher priority.
.PHONY: all-stage1-gcc maybe-all-stage1-gcc
.PHONY: clean-stage1-gcc maybe-clean-stage1-gcc
maybe-all-stage1-gcc:
maybe-clean-stage1-gcc:
maybe-all-stage1-gcc: all-stage1-gcc
all-stage1: all-stage1-gcc
TARGET-stage1-gcc = $(TARGET-gcc)
all-stage1-gcc: configure-stage1-gcc
@[ $(current_stage) = stage1 ] || $(MAKE) stage1-start
@r=`${PWD_COMMAND}`; export r; \
s=`cd $(srcdir); ${PWD_COMMAND}`; export s; \
TFLAGS="$(STAGE1_TFLAGS)"; \
$(HOST_EXPORTS) \
cd $(HOST_SUBDIR)/gcc && \
$(MAKE) $(BASE_FLAGS_TO_PASS) \
CFLAGS="$(STAGE1_CFLAGS)" \
CXXFLAGS="$(STAGE1_CXXFLAGS)" \
LIBCFLAGS="$(LIBCFLAGS)" \
CFLAGS_FOR_TARGET="$(CFLAGS_FOR_TARGET)" \
CXXFLAGS_FOR_TARGET="$(CXXFLAGS_FOR_TARGET)" \
LIBCFLAGS_FOR_TARGET="$(LIBCFLAGS_FOR_TARGET)" \
$(EXTRA_HOST_FLAGS) $(EXTRA_GCC_FLAGS) \
TFLAGS="$(STAGE1_TFLAGS)" \
$(TARGET-stage1-gcc)
Suggestions:
a) include LDFLAGS="$(STAGE1_LDFLAGS)" in this invocation
b) remove LDFLAGS from BASE_FLAGS_TO_PASS, and include it everywhere it may be
needed. So LDFLAGS setting from HOST_EXPORTS will take priority
