GCC 10+ defaults to -fno-common, which enforces proper declaration of
external references using "extern". without this change a link would
fail with:
ld: raid6.a(algos.o):lib/raid6/test/algos.c:28: multiple definition of `raid6_call';
lib/raid6/test/test.c:22: first defined here
Signed-off-by: Dirk Müller <dmueller@xxxxxxx>
---
lib/raid6/test/test.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/raid6/test/test.c b/lib/raid6/test/test.c
index a3cf071941ab..ab0459150a61 100644
--- a/lib/raid6/test/test.c
+++ b/lib/raid6/test/test.c
@@ -19,7 +19,7 @@
#define NDISKS 16 /* Including P and Q */
const char raid6_empty_zero_page[PAGE_SIZE] __attribute__((aligned(PAGE_SIZE)));
-struct raid6_calls raid6_call;
+extern struct raid6_calls raid6_call;
char *dataptrs[NDISKS];
char data[NDISKS][PAGE_SIZE] __attribute__((aligned(PAGE_SIZE)));
--
2.34.1
