[PATCH v1 3/4] perf test: Avoid weak symbol for arch_tests

[Ian Rogers <irogers@google.com>]

GCC LTO will complain that the array length varies for the arch_tests
weak symbol. Use extern/static and architecture determining #if to
workaround this problem.

Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/tests/builtin-test.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 1f6557ce3b0a..5291fb5f54d7 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -33,9 +33,18 @@
 static bool dont_fork;
 const char *dso_to_test;
 
-struct test_suite *__weak arch_tests[] = {
+/*
+ * List of architecture specific tests. Not a weak symbol as the array length is
+ * dependent on the initialization, as such GCC with LTO complains of
+ * conflicting definitions with a weak symbol.
+ */
+#if defined(__i386__) || defined(__x86_64__) || defined(__aarch64__) || defined(__powerpc64__)
+extern struct test_suite *arch_tests[];
+#else
+static struct test_suite *arch_tests[] = {
 	NULL,
 };
+#endif
 
 static struct test_suite *generic_tests[] = {
 	&suite__vmlinux_matches_kallsyms,
-- 
2.41.0.487.g6d72f3e995-goog