Package: libunwind-dev
I was trying to build mesa in raspbian and the build environment happened to
have libunwind-dev
installed and mesa tried to use it, resulting in a build failure.
../../../../src/gallium/auxiliary/util/u_debug_stack.c:114:4: error: expected
‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘asm’
unw_getcontext(&context);
Some discussion on #dri-devel on freenode and some local testing revealed that
unw_getcontext is broken when building on arm with
-std=c99 , building a trivial test file fails with the same error the mesa
build failed with. The trivial test file is given below.
#include <libunwind.h>
void test(void) {
unw_context_t context;
unw_getcontext(&context);
}
There is apparently a patch for this at
http://patchwork.ozlabs.org/patch/783462/ but I have not tested said patch.
