prevent multiply defined symbols
Without this patch applied gcc@10.1.0 fails to compile with the following
error (note mesa@18.3.6 but the latest release also posseses this problem):
ld: ../../../../src/gallium/auxiliary/.libs/libgallium.a(u_debug_symbol.o):/tmp/spack/spack-stage/spack-stage-mesa-18.3.6-be7kyg2dyxwktir3zrai27n6a6coadab/spack-src/src/galli um/auxiliary/util/u_debug_symbol.c:273: multiple definition of `symbols_hash'; ../../../../src/gallium/auxiliary/.libs/libgallium.a(u_debug_stack.o):/tmp/spa ck/spack-stage/spack-stage-mesa-18.3.6-be7kyg2dyxwktir3zrai27n6a6coadab/spack-src/src/gallium/auxiliary/util/u_debug_stack.c:49: first defined here
collect2: error: ld returned 1 exit status
make[4]: *** [libGL.la] Error 1
make[4]: Leaving directory `/tmp/spack/spack-stage/spack-stage-mesa-18.3.6-be7kyg2dyxwktir3zrai27n6a6coadab/spack-src/src/gallium/targets/libgl-xlib'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory `/tmp/spack/spack-stage/spack-stage-mesa-18.3.6-be7kyg2dyxwktir3zrai27n6a6coadab/spack-src/src/gallium'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/tmp/spack/spack-stage/spack-stage-mesa-18.3.6-be7kyg2dyxwktir3zrai27n6a6coadab/spack-src/src'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/tmp/spack/spack-stage/spack-stage-mesa-18.3.6-be7kyg2dyxwktir3zrai27n6a6coadab/spack-src/src'
make: *** [all-recursive] Error 1
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/3298
Cc: mesa-stable
Reviewed-by: Michel Dänzer <mdaenzer@redhat.com>
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6053>
diff --git a/src/gallium/auxiliary/util/u_debug_stack.c b/src/gallium/auxiliary/util/u_debug_stack.c
index e16123b..a1e7b27 100644
--- a/src/gallium/auxiliary/util/u_debug_stack.c
+++ b/src/gallium/auxiliary/util/u_debug_stack.c
@@ -47,7 +47,7 @@
#include "os/os_thread.h"
#include "u_hash_table.h"
-struct hash_table* symbols_hash;
+static struct hash_table* symbols_hash;
static mtx_t symbols_mutex = _MTX_INITIALIZER_NP;
/* TODO with some refactoring we might be able to re-use debug_symbol_name_cached()
diff --git a/src/gallium/auxiliary/util/u_debug_symbol.c b/src/gallium/auxiliary/util/u_debug_symbol.c
index 4bbed58..d647192 100644
--- a/src/gallium/auxiliary/util/u_debug_symbol.c
+++ b/src/gallium/auxiliary/util/u_debug_symbol.c
@@ -270,7 +270,7 @@
debug_printf("\t%s\n", buf);
}
-struct hash_table* symbols_hash;
+static struct hash_table* symbols_hash;
#ifdef PIPE_OS_WINDOWS
static mtx_t symbols_mutex;
#else
