2004-12-15 Gonzalo Paniagua Javier <gonzalo@ximian.com>

[mono.git] / configure.in

diff --git a/configure.in b/configure.in
index 43a5a9d9b15b78e3feb45b8ce4bb05239ba1d4ad..6f6537bbd37adb3d09fb48e4db9f5906a0e3d4c1 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -251,8 +251,18 @@ AC_CHECK_HEADERS(elf.h)
 
 # for mono/dis
 AC_CHECK_HEADERS(wchar.h)
-AC_CHECK_FUNCS(isinf)
 AC_CHECK_HEADERS(ieeefp.h)
+AC_MSG_CHECKING(for isinf)
+AC_TRY_COMPILE([#include <math.h>], [
+       int f = isinf (1);
+], [
+       AC_MSG_RESULT(yes)
+       AC_DEFINE(HAVE_ISINF, 1, [isinf available])
+], [
+       # We'll have to use signals
+       AC_MSG_RESULT(no)
+])
+
 
 # not 64 bit clean in cross-compile
 AC_CHECK_SIZEOF(void *, 4)