Hello all, (I did contribute to GCC long time ago) I'm using only Debian (trixie/x86-64) or Linux Mint 22 (x86-64). I'm working on the RefPerSys inference engine project (GPL licensed, see also refpersys.org amateur website) on https://github.com/RefPerSys/RefPerSys/ and I want all the GCC compilation to compile C++ and C code with DWARF debugging enabled. Is there a way to force the spec file for the system compiler /usr/bin/g++ to enable -g implicitly. IIRC, the spec file is builtin the /usr/bin/gcc executable, and to change it I have to recompile GCC entirely. Can I avoid recompiling all of GCC? (due to hardware issues -perhaps faulty RAM- compiling GCC is difficult in a reliable way). NB. contributors to RefPerSys are welcome, but I cannot pay them for that (being retired). For completeness, here is the output of: % /usr/bin/g++ -v Using built-in specs. COLLECT_GCC=/usr/bin/g++ COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-linux-gnu/13/lto-wrapper OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa OFFLOAD_TARGET_DEFAULT=1 Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 13.3.0- 6ubuntu2~24.04' --with-bugurl=file:///usr/share/doc/gcc-13/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2 --prefix=/usr --with-gcc-major-version-only --program-suffix=-13 --program- prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id -- libexecdir=/usr/libexec --without-included-gettext --enable- threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap -- enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-libstdcxx-backtrace --enable- gnu-unique-object --disable-vtable-verify --enable-plugin --enable- default-pie --with-system-zlib --enable-libphobos-checking=release -- with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch - -disable-werror --enable-cet --with-arch-32=i686 --with-abi=m64 --with- multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic -- enable-offload-targets=nvptx-none=/build/gcc-13-fG75Ri/gcc-13- 13.3.0/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/gcc-13-fG75Ri/gcc-13- 13.3.0/debian/tmp-gcn/usr --enable-offload-defaulted --without-cuda- driver --enable-checking=release --build=x86_64-linux-gnu -- host=x86_64-linux-gnu --target=x86_64-linux-gnu --with-build- config=bootstrap-lto-lean --enable-link-serialization=2 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 13.3.0 (Ubuntu 13.3.0-6ubuntu2~24.04) So apparently the spec are builtin. thanks for reading. Regards from France. -- Basile STARYNKEVITCH <basile@xxxxxxxxxxxxxxxxx> 8 rue de la Faïencerie 92340 Bourg-la-Reine, France http://starynkevitch.net/Basile & https://github.com/bstarynk