https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107125
Bug ID: 107125 Summary: libobjc fails to build on arc-linux-gnu Product: gcc Version: 13.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: doko at gcc dot gnu.org Target Milestone: --- seen with trunk 20221001 on arc-linux-gnu: first, config/arc/arc-arch.h uses NULL, but doesn't include stddef.h then linking of libobjc fails with: libtool: link: /home/packages/cross/12/p/gcc-cross-ports/gcc/build/./gcc/xgcc -B/home/packages/cross/12/p/gcc-cross-ports/gcc/build/./gcc/ -B/usr/ar c-linux-gnu/bin/ -B/usr/arc-linux-gnu/lib/ -isystem /usr/arc-linux-gnu/include -isystem /usr/arc-linux-gnu/sys-include -isystem /home/packages/cross /12/p/gcc-cross-ports/gcc/build/sys-include -shared -fPIC -DPIC .libs/NXConstStr.o .libs/Object.o .libs/Protocol.o .libs/accessors.o .libs/link ing.o .libs/class.o .libs/encoding.o .libs/error.o .libs/gc.o .libs/hash.o .libs/init.o .libs/ivars.o .libs/memory.o .libs/methods.o .libs/nil_metho d.o .libs/objc-foreach.o .libs/objc-sync.o .libs/objects.o .libs/protocols.o .libs/sarray.o .libs/selector.o .libs/sendmsg.o .libs/thr.o .libs/excep tion.o -shared-libgcc -Wl,-z -Wl,relro -Wl,-soname -Wl,libobjc.so.4 -o .libs/libobjc.so.4.0.0 checking whether the target supports thread-local storage... /usr/arc-linux-gnu/bin/ld: config.status: executing libtool commands .libs/thr.o:/home/packages/cross/12/p/gcc-cross-ports/gcc/src/libobjc/../gcc/config/arc/arc-arch.h:130: multiple definition of `arc_cpu_types'; .lib s/encoding.o:/home/packages/cross/12/p/gcc-cross-ports/gcc/src/libobjc/../gcc/config/arc/arc-arch.h:130: first defined here /usr/arc-linux-gnu/bin/ld: .libs/thr.o:/home/packages/cross/12/p/gcc-cross-ports/gcc/src/libobjc/../gcc/config/arc/arc-arch.h:120: multiple definiti on of `arc_arch_types'; .libs/encoding.o:/home/packages/cross/12/p/gcc-cross-ports/gcc/src/libobjc/../gcc/config/arc/arc-arch.h:120: first defined h ere so better move these vars to a .c file, don't keep them in the header.