https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97798
--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> --- My attempt to build msp430 fails with: In file included from /home/jwakely/gcc/msp430-elf/msp430-elf/include/stdint.h:13, from /home/jwakely/src/gcc/build-16bit/gcc/include/stdint.h:9, from /home/jwakely/src/gcc/build-16bit/msp430-elf/large/libstdc++-v3/include/bits/align.h:36, from /home/jwakely/src/gcc/build-16bit/msp430-elf/large/libstdc++-v3/include/memory:72, from /home/jwakely/src/gcc/gcc/libstdc++-v3/include/precompiled/stdc++.h:82: /home/jwakely/gcc/msp430-elf/msp430-elf/include/sys/_intsup.h:68:2: error: #error "Unable to determine type definition of intptr_t" 68 | #error "Unable to determine type definition of intptr_t" | ^~~~~ Is that related?