configure: Check for and explicitly link against -latomic

Some C libraries, such as uClibc, require an explicit link for some atomic functions. Check for any libatomic, and explcily link it.
2016-06-14 14:27:20 +02:00
parent 796c36ade1
commit 518a5b2ece
13 changed files with 20 additions and 12 deletions
@@ -490,6 +490,11 @@ LIBS=$DLLIB
 AC_SEARCH_LIBS(pthread_create, pthread, [PTHREADLIB=$LIBS])
 AC_SUBST(PTHREADLIB)

+# uClibc requires explicit -latomic for __atomic_* operations
+LIBS=""
+AC_SEARCH_LIBS(__atomic_load, atomic, [ATOMICLIB=$LIBS])
+AC_SUBST(ATOMICLIB)
+
 LIBS=$saved_LIBS
 # ------------------------------------------------------