fix build error on ARM due to wrong glibc check
the test for glibc < 2 "succeeds" wrongly for any non-glibc C library,
and breaks the build on musl libc.
we must first test if __GLIBC__ is defined at all, before using it
unconditionally.
Signed-off-by: John Spencer <[email protected]>
Reviewed-by: Stefan Weil <[email protected]>
Signed-off-by: Stefan Hajnoczi <[email protected]>
diff --git a/user-exec.c b/user-exec.c
index 1185cb0..5863b9f 100644
--- a/user-exec.c
+++ b/user-exec.c
@@ -436,7 +436,7 @@
unsigned long pc;
int is_write;
-#if (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3))
+#if defined(__GLIBC__) && (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3))
pc = uc->uc_mcontext.gregs[R15];
#else
pc = uc->uc_mcontext.arm_pc;
