Change the use of asm/atomic.h to require -DGIT_HAS_ASM_ATOMIC These headers aren't always available; they typically come from the Linux kernel, but aren't supposed to be exported into the userspace /usr/include. Modern kernels won't install these and some distros rm -rf the directory post kernel header install. Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
diff --git a/src/thread-utils.h b/src/thread-utils.h
index f8ed08a..9922841 100644
--- a/src/thread-utils.h
+++ b/src/thread-utils.h
@@ -9,7 +9,7 @@ typedef pthread_mutex_t git_lck;
# define gitlck_unlock(a) pthread_mutex_unlock(a)
# define gitlck_free(a) pthread_mutex_destroy(a)
-# if defined(__GLIBC__)
+# if defined(GIT_HAS_ASM_ATOMIC)
# include <asm/atomic.h>
typedef atomic_t git_refcnt;
# define gitrc_init(a) atomic_set(a, 0)