On Mon, 17 Jan 2022 at 21:09, Jonathan Wakely <jwakely.gcc@xxxxxxxxx> wrote: > > On Mon, 17 Jan 2022 at 18:54, SAIFI <saifi@xxxxxxxxx> wrote: > > > > Hi: > > > > an out-of-tree build of gcc (git:main) was configured with the following option. > > > > --enable-libstdcxx-backtrace=yes > > > > the source tree build went fine, however when it came to building 'libbacktrace' the compilation error'd out as seen below. > > > > Making all in libbacktrace > > make[6]: Entering directory '/strikr/infra/build/gcc/x86_64-pc-linux-gnu/libstdc++-v3/src/debug/libbacktrace' > > /bin/sh ../../../libtool --tag=CC --mode=compile /strikr/infra/build/gcc/./gcc/xgcc -B/strikr/infra/build/gcc/./gcc/ -B/opt/gcc/x86_\ > > 64-pc-linux-gnu/bin/ -B/opt/gcc/x86_64-pc-linux-gnu/lib/ -isystem /opt/gcc/x86_64-pc-linux-gnu/include -isystem /opt/gcc/x86_64-pc-linu\ > > x-gnu/sys-include -fchecking=1 -DHAVE_CONFIG_H -I. -I/strikr/src/gcc/libstdc++-v3/src/libbacktrace -I../../.. -I /strikr/src/gcc/lib\ > > stdc++-v3/../include -I /strikr/src/gcc/libstdc++-v3/../libgcc -I ../../../libgcc -I .. -I /strikr/src/gcc/libstdc++-v3 -I /strikr/src/\ > > gcc/libstdc++-v3/../libbacktrace -include /strikr/src/gcc/libstdc++-v3/src/libbacktrace/backtrace-rename.h -DHAVE_ATOMIC_FUNCTIONS=1 -D\ > > HAVE_SYNC_FUNCTIONS=1 -DHAVE_FCNTL=1 -DBACKTRACE_ELF_SIZE=64 -W -Wall -Wwrite-strings -Wmissing-format-attribute -Wcast-qual -Werror -\ > > Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wno-unused-but-set-variable -fcf-protection -mshstk -g -O2 -c -o atomic\ > > .lo `test -f '../../../libbacktrace/atomic.c' || echo '/strikr/src/gcc/libstdc++-v3/src/libbacktrace/'`../../../libbacktrace/atomic.c > > libtool: compile: /strikr/infra/build/gcc/./gcc/xgcc -B/strikr/infra/build/gcc/./gcc/ -B/opt/gcc/x86_64-pc-linux-gnu/bin/ -B/opt/gcc/x\ > > 86_64-pc-linux-gnu/lib/ -isystem /opt/gcc/x86_64-pc-linux-gnu/include -isystem /opt/gcc/x86_64-pc-linux-gnu/sys-include -fchecking=1 -D\ > > HAVE_CONFIG_H -I. -I/strikr/src/gcc/libstdc++-v3/src/libbacktrace -I../../.. -I /strikr/src/gcc/libstdc++-v3/../include -I /strikr/src/\ > > gcc/libstdc++-v3/../libgcc -I ../../../libgcc -I .. -I /strikr/src/gcc/libstdc++-v3 -I /strikr/src/gcc/libstdc++-v3/../libbacktrace -in\ > > clude /strikr/src/gcc/libstdc++-v3/src/libbacktrace/backtrace-rename.h -DHAVE_ATOMIC_FUNCTIONS=1 -DHAVE_SYNC_FUNCTIONS=1 -DHAVE_FCNTL=1\ > > -DBACKTRACE_ELF_SIZE=64 -W -Wall -Wwrite-strings -Wmissing-format-attribute -Wcast-qual -Werror -Wstrict-prototypes -Wmissing-prototyp\ > > es -Wold-style-definition -Wno-unused-but-set-variable -fcf-protection -mshstk -g -O2 -c /strikr/src/gcc/libstdc++-v3/src/libbacktrace/\ > > ../../../libbacktrace/atomic.c -fPIC -DPIC -o .libs/atomic.o > > /strikr/src/gcc/libstdc++-v3/src/libbacktrace/../../../libbacktrace/atomic.c:38:10: fatal error: backtrace-supported.h: No such file or\ > > directory > > 38 | #include "backtrace-supported.h" > > | ^~~~~~~~~~~~~~~~~~~~~~~ > > compilation terminated. > > > > However, in the build directory, the header file is seen > > > > f$ find . -iname "backtrace-supported.h" > > ./stage1-libbacktrace/backtrace-supported.h > > ./x86_64-pc-linux-gnu/libstdc++-v3/src/libbacktrace/backtrace-supported.h > > ./prev-libbacktrace/backtrace-supported.h > > ./stage1-x86_64-pc-linux-gnu/libstdc++-v3/src/libbacktrace/backtrace-supported.h > > ./libbacktrace/backtrace-supported.h > > ./prev-x86_64-pc-linux-gnu/libstdc++-v3/src/libbacktrace/backtrace-supported.h > > > > Am I missing something here ? Any pointers ? > > The build output says: > make[6]: Entering directory > '/strikr/infra/build/gcc/x86_64-pc-linux-gnu/libstdc++-v3/src/debug/libbacktrace' > > And the header is not present in that directory. > > It looks like I didn't test the combination of > --enable-libstdcxx-debug and --enable-libstdcxx-backtrace I can reproduce the build failure with this combination. I'll look into it ASAP.
