config: Support target_clones on more platforms

2 files changed, 8 insertions, 1 deletions

diff --git a/src/config.h b/src/config.h
index 5bd49de..0822e3c 100644
--- a/src/config.h
+++ b/src/config.h
@@ -186,4 +186,11 @@
 #	define BFS_FORMATTER(fmt, args)
 #endif
 
+/**
+ * Check if function multiversioning via GNU indirect functions (ifunc) is supported.
+ */
+#if !defined(BFS_TARGET_CLONES) && __has_attribute(target_clones) && (__GLIBC__ || __FreeBSD__ || __NetBSD__)
+#	define BFS_TARGET_CLONES true
+#endif
+
 #endif // BFS_CONFIG_H
diff --git a/src/trie.c b/src/trie.c
index 1434356..caa38a7 100644
--- a/src/trie.c
+++ b/src/trie.c
@@ -107,7 +107,7 @@
 #	error "This trie implementation assumes 8-bit bytes."
 #endif
 
-#if __GLIBC__ && __has_attribute(target_clones) && (__i386__ || __x86_64__)
+#if BFS_TARGET_CLONES && (__i386__ || __x86_64__)
 #	define TARGET_CLONES_POPCNT __attribute__((target_clones("popcnt", "default")))
 #else
 #	define TARGET_CLONES_POPCNT