clang can inline, like GCC. It also supports the '__inline' and '__inline__'
keywords.
2020-08-16 Bruno Haible <br...@clisp.org>
nstrftime: Guide inlining also on clang.
* lib/nstrftime.c (iso_week_days): Inline also on clang.
diff --git a/lib/nstrftime.c b/lib/nstrftime.c
index 28bc42f..580224d 100644
--- a/lib/nstrftime.c
+++ b/lib/nstrftime.c
@@ -368,7 +368,7 @@ tm_diff (const struct tm *a, const struct tm *b)
#define ISO_WEEK1_WDAY 4 /* Thursday */
#define YDAY_MINIMUM (-366)
static int iso_week_days (int, int);
-#ifdef __GNUC__
+#if defined __GNUC__ || defined __clang__
__inline__
#endif
static int
