On 29.09.22 09:06, Jakub Jelinek wrote:
My recent change to enable _Float{16,32,64,128,32x,64x,128x} for C++
apparently broke bootstrap on some Debian/Ubuntu setups.
Those multiarch targets put some headers into
/usr/include/x86_64-linux-gnu/bits/ etc. subdirectory instead of
/usr/include/bits/.
...
Bootstrapped/regtested on x86_64-linux (Debian on GCCFarm, though with the
/usr/include/bits -> x86_64-linux-gnu/bits symlink). Ok for trunk?
I have now bootstrapped on ppc64le with Ubuntu 18.04.3 LTS (bionic) with glibc
2.27-3ubuntu1
This glibc is too old for the '# if __LDBL_MANT_DIG__ == 113"' issue reported
by
Joseph as that line was added one version later in glibc 2.28.
But it did have the bootstrap issue (only affecting the -B... / build, the
installed
one was okay - for reasons why, see PR).
Thus, my boostrap only tested this patch - and not the __LDBL_MANT_DIG__ part.
Result: Bootstrapping passed and I get for
cd $BUILD
echo '#include <complex.h>' > foo.c
gcc/xgcc -B`pwd`/gcc -v -E -o foo.i foo.c
grep floatn.h foo.i
...
/tmp/gcc-build/gcc/cc1 ... \
-iprefix
/tmp/tburnus-gcc-test/gcc/../lib/gcc/powerpc64le-unknown-linux-gnu/13.0.0/ \
-isystem /tmp/tburnus-gcc-test/gcc/include \
-isystem /tmp/tburnus-gcc-test/gcc/include-fixed/powerpc64le-linux-gnu \
-isystem /tmp/tburnus-gcc-test/gcc/include-fixed
...
#include "..." search starts here:
#include <...> search starts here:
/tmp/gcc-build/gcc/include
/tmp/gcc-build/gcc/include-fixed/powerpc64le-linux-gnu
/tmp/gcc-build/gcc/include-fixed
/usr/local/include
/usr/include/powerpc64le-linux-gnu
/usr/include
End of search list.
...
# 1 "/tmp/gcc-build/gcc/include-fixed/powerpc64le-linux-gnu/bits/floatn.h" 1 3 4
* * *
And with the installed version:
#include "..." search starts here:
#include <...> search starts here:
/tmp/gcc-inst/lib/gcc/powerpc64le-unknown-linux-gnu/13.0.0/include
/usr/local/include
/tmp/gcc-inst/include
/tmp/gcc-inst/lib/gcc/powerpc64le-unknown-linux-gnu/13.0.0/include-fixed/powerpc64le-linux-gnu
/tmp/gcc-inst/lib/gcc/powerpc64le-unknown-linux-gnu/13.0.0/include-fixed
/usr/include/powerpc64le-linux-gnu
/usr/include
End of search list.
...
# 1
"/tmp/gcc-inst/lib/gcc/powerpc64le-unknown-linux-gnu/13.0.0/include-fixed/powerpc64le-linux-gnu/bits/floatn.h"
1 3 4
...
Thanks for the fix!
Tobias
2022-09-29 Jakub Jelinek <ja...@redhat.com><mailto:ja...@redhat.com>
PR bootstrap/107059
* cppdefault.cc (cpp_include_defaults): If SYSROOT_HEADERS_SUFFIX_SPEC
isn't defined, add FIXED_INCLUDE_DIR entry with multilib flag 2
before FIXED_INCLUDE_DIR entry with multilib flag 0.
* gcc.cc (do_spec_1): If multiarch_dir, add
include-fixed/multiarch_dir paths before include-fixed paths.
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