On Sat, May 13, 2017 at 02:22:30AM +0200, Jan Beich wrote: > "int" isn't large enough and lack of builtins only manifests at link time. > This was breaking build on FreeBSD 11.0 i386 with Clang 3.8.0.
You should be building with -march=i586 on i386 for CX8. The diff is wrong as it will break other architectures, ie powerpc. commit a6a38a038bd62e6d9558905f00bef81b5e7e6fcc Author: Grazvydas Ignotas <nota...@gmail.com> Date: Fri Mar 31 01:26:25 2017 +0300 util/u_atomic: provide 64bit atomics where they're missing attempts to handle powerpc like situations, though not sync builtins being missing entirely. > > glsl/.libs/libstandalone.a(libmesautil_la-disk_cache.o): In function > `disk_cache_remove': > disk_cache.c:(.text+0x763): undefined reference to `__atomic_fetch_add_8' > glsl/.libs/libstandalone.a(libmesautil_la-disk_cache.o): In function > `cache_put': > disk_cache.c:(.text+0xabc): undefined reference to `__atomic_fetch_add_8' > disk_cache.c:(.text+0xec1): undefined reference to `__atomic_fetch_add_8' > c++: error: linker command failed with exit code 1 (use -v to see invocation) > --- > configure.ac | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/configure.ac b/configure.ac > index 957d15df8c..5b11941a0c 100644 > --- a/configure.ac > +++ b/configure.ac > @@ -403,9 +403,10 @@ AM_CONDITIONAL([SSE41_SUPPORTED], [test > x$SSE41_SUPPORTED = x1]) > AC_SUBST([SSE41_CFLAGS], $SSE41_CFLAGS) > > dnl Check for new-style atomic builtins > -AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ > +AC_LINK_IFELSE([AC_LANG_SOURCE([[ > +#include <stdint.h> > int main() { > - int n; > + uint64_t n; > return __atomic_load_n(&n, __ATOMIC_ACQUIRE); > }]])], GCC_ATOMIC_BUILTINS_SUPPORTED=1) > if test "x$GCC_ATOMIC_BUILTINS_SUPPORTED" = x1; then > _______________________________________________ > mesa-dev mailing list > mesa-dev@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/mesa-dev _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev