Mark Millard <mark...@yahoo.com> writes: > The following is on a powerpc64 machine (old PowerMac G5 so-called > "Quad Core") running a personal build of head -r339076 that was > built via devel/powerpc64-xtoolchain-gcc and such (no gcc 4.2.1). > The compiler for the port build is system-clang (so clang 6 as cc), > not used for buildworld buildkernel. [I experiment with more modern > compilers and toolchains for some powerpc family members.] [...] > /bin/sh ../../libtool --tag=CC --mode=compile cc -DHAVE_CONFIG_H > -I. -I../../include -I../../include -I/usr/ports/audio/alsa-lib/files > -O2 -pipe -g -fno-strict-aliasing -MT control.lo -MD -MP -MF > .deps/control.Tpo -c -o control.lo control.c [...] > fatal error: error in backend: A @@ version cannot be undefined > cc: error: clang frontend command failed with exit code 70 (use -v to see > invocation) > FreeBSD clang version 6.0.1 (tags/RELEASE_601/final 335540) (based on LLVM > 6.0.1) > Target: powerpc64-unknown-freebsd12.0 > Thread model: posix > InstalledDir: /usr/bin
Looks easy to reproduce on amd64 via -target e.g., $ cd /usr/ports/audio/alsa-lib $ make clean configure $ cd $(make -V WRKSRC)/src/control $ ln -s ${SYSDIR:-/usr/src/sys}/powerpc/include /tmp/machine $ make control.lo CC='cc -target powerpc64-unknown-freebsd12.0 -isystem /tmp' [...] fatal error: error in backend: A @@ version cannot be undefined cc: error: clang frontend command failed with exit code 70 (use -v to see invocation) FreeBSD clang version 7.0.0 (tags/RELEASE_700/final 342383) (based on LLVM 7.0.0) which points to the following conditional #ifdef __powerpc64__ # define symbol_version(real, name, version) \ __asm__ (".symver " ASM_NAME(#real) "," ASM_NAME(#name) "@" #version); \ __asm__ (".symver ." ASM_NAME(#real) ",." ASM_NAME(#name) "@" #version) # define default_symbol_version(real, name, version) \ __asm__ (".symver " ASM_NAME(#real) "," ASM_NAME(#name) "@@" #version); \ __asm__ (".symver ." ASM_NAME(#real) ",." ASM_NAME(#name) "@@" #version) #else # define symbol_version(real, name, version) \ __asm__ (".symver " ASM_NAME(#real) "," ASM_NAME(#name) "@" #version) # define default_symbol_version(real, name, version) \ __asm__ (".symver " ASM_NAME(#real) "," ASM_NAME(#name) "@@" #version) #endif and can be further reduced to int main() { __asm__ (".symver __foo,foo@@FOO"); __asm__ (".symver .__foo,.foo@@FOO"); } _______________________________________________ freebsd-toolchain@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-toolchain To unsubscribe, send any mail to "freebsd-toolchain-unsubscr...@freebsd.org"