#4641: ICA: gcc compilers (c++, gcc, cc1, cc1plus, ...) differ between first and
second build
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Reporter: bdubbs | Owner: lfs-book
Type: task | Status: new
Priority: normal | Milestone: 9.2
Component: Book | Version: SVN
Severity: normal | Resolution:
Keywords: |
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Comment (by bdubbs):
From pierre.labastie:
I've been able to set up an example for the gcc differences, using one of
the affected files, which is spellcheck.o. On a finished lfs, cd /sources
and unpack gcc, cd to the unpacked tree, then:
{{{
mkdir build1 && cd build1
CC=/tools/bin/gcc \
CXX=/tools/bin/g++ \
../configure --prefix=/usr \
--enable-languages=c,c++ \
--disable-multilib \
--disable-bootstrap \
--with-system-zlib
make -j4 all-build
make -j4 configure-host
cd gcc
make -j4 c-family/c-spellcheck.o
cd ../..
mkdir build2 && cd build2
../configure --prefix=/usr
#... then the same thing again in build2 without setting CC and CXX
}}}
On my machine the produced .o files are different. As can be seen by
diffing the output of objdump -d.
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Ticket URL: <http://wiki.linuxfromscratch.org/lfs/ticket/4641#comment:3>
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