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
