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-rw-r--r--Zend/Zend.m42
1 files changed, 1 insertions, 1 deletions
diff --git a/Zend/Zend.m4 b/Zend/Zend.m4
index bdeac672b4..fd2b85d2ac 100644
--- a/Zend/Zend.m4
+++ b/Zend/Zend.m4
@@ -100,7 +100,7 @@ AC_FUNC_ALLOCA
AC_CHECK_FUNCS(memcpy strdup getpid kill strtod strtol finite fpclass sigsetjmp)
AC_ZEND_BROKEN_SPRINTF
-AC_CHECK_FUNCS(finite isfinite isinf isnan)
+AC_CHECK_DECLS([isfinite, isnan, isinf], [], [], [[#include <math.h>]])
ZEND_FP_EXCEPT