Hi, This may overlap with known build issues but I'm not sure. Configuring GMP with gcc 15 on a fresh Arch install fails (with essential development tools from `base-devel` installed).
$ ./configure checking build system type... raptorlake-pc-linux-gnu checking host system type... raptorlake-pc-linux-gnu checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... /usr/bin/mkdir -p checking for gawk... gawk checking whether make sets $(MAKE)... yes checking whether make supports nested variables... yes checking whether to enable maintainer-specific portions of Makefiles... no checking ABI=64 checking compiler gcc -O2 -pedantic -fomit-frame-pointer -m64 ... no, long long reliability test 1 checking whether cc is gcc... yes checking compiler cc -O2 -pedantic -fomit-frame-pointer -m64 ... no, long long reliability test 1 checking ABI=x32 checking compiler gcc -O2 -pedantic -fomit-frame-pointer -mx32 ... no checking whether cc is gcc... yes checking compiler cc -O2 -pedantic -fomit-frame-pointer -mx32 ... no checking ABI=32 checking compiler gcc -m32 -O2 -pedantic -fomit-frame-pointer ... no checking compiler gcc -O2 -pedantic -fomit-frame-pointer ... no, long long reliability test 1 checking compiler icc -no-gcc ... no checking whether cc is gcc... yes checking compiler cc -m32 -O2 -pedantic -fomit-frame-pointer ... no checking compiler cc -O2 -pedantic -fomit-frame-pointer ... no, long long reliability test 1 configure: error: could not find a working compiler, see config.log for details GMP can be installed without issue with the arch linux package manager, and looking at the arch repository they seem to have a patch for gmp with gcc 15: https://gitlab.archlinux.org/archlinux/packaging/packages/gmp/-/blob/main/gmp-gcc-15.patch?ref_type=heads More info: gmp version: gmp 6.3.0 $ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/15.1.1/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /build/gcc/src/gcc/configure --enable-languages=ada,c,c++,d,fortran,go,lto,m2,objc,obj-c++,rust,cobol --enable-bootstrap --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl= https://gitlab.archlinux.org/archlinux/packaging/packages/gcc/-/issues --with-build-config=bootstrap-lto --with-linker-hash-style=gnu --with-system-zlib --enable-__cxa_atexit --enable-cet=auto --enable-checking=release --enable-clocale=gnu --enable-default-pie --enable-default-ssp --enable-gnu-indirect-function --enable-gnu-unique-object --enable-libstdcxx-backtrace --enable-link-serialization=1 --enable-linker-build-id --enable-lto --enable-multilib --enable-plugin --enable-shared --enable-threads=posix --disable-libssp --disable-libstdcxx-pch --disable-werror Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 15.1.1 20250425 (GCC) $ uname -a Linux archlinux 6.15.8-arch1-1 #1 SMP PREEMPT_DYNAMIC Thu, 24 Jul 2025 18:18:11 +0000 x86_64 GNU/Linux $ ./config.guess raptorlake-pc-linux-gnu Compressed config.log is attached. Best, Will
<<attachment: config.zip>>
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