[m4] Replace deprecated AC_TRY_COMPILE by AC_COMPILE_IFELSE.

(reviewed by bernd)


git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@10382 2fb0f335-1f38-0410-981e-8018bf24f1b0

m4/cxx0x_constexpr.m4

@@ -3,13 +3,17 @@ AC_DEFUN([CONSTEXPR_CHECK],[
   AC_REQUIRE([GXX0X])
   AC_LANG_PUSH([C++])
   AC_MSG_CHECKING([whether constexpr is supported])
-  AC_TRY_COMPILE([],[constexpr int peng = 123;], [
-    HAVE_CONSTEXPR=yes
-    AC_MSG_RESULT(yes)], [
-    HAVE_CONSTEXPR=no
-    AC_MSG_RESULT(no)])
+  AC_COMPILE_IFELSE(
+    [AC_LANG_PROGRAM(
+      [],
+      [[constexpr int peng = 123;]])
+    ],
+    [HAVE_CONSTEXPR=yes
+      AC_MSG_RESULT(yes)],
+    [HAVE_CONSTEXPR=no
+      AC_MSG_RESULT(no)])
+  AC_LANG_POP([C++])
   if test "x$HAVE_CONSTEXPR" = xyes; then
     AC_DEFINE(HAVE_CONSTEXPR, 1, [Define to 1 if constexpr is supported])
   fi
-  AC_LANG_POP
 ])

m4/dumux_always_inline.m4

@@ -3,11 +3,15 @@
 AC_DEFUN([DUMUX_CHECK_ALWAYS_INLINE],[
   AC_MSG_CHECKING([for __attribute__((always_inline))])
   AC_LANG_PUSH([C++])
-  AC_TRY_COMPILE([void fn() __attribute__((always_inline)); void fn() {} ],[],
-                 [DUMUX_ALWAYS_INLINE="__attribute__((always_inline))"
-                  AC_MSG_RESULT(yes)],
-                 [DUMUX_ALWAYS_INLINE=""
-                  AC_MSG_RESULT(no)])
+  AC_COMPILE_IFELSE(
+    [AC_LANG_PROGRAM(
+      [[void fn() __attribute__((always_inline)); void fn() {} ]],
+      []
+    )],
+    [DUMUX_ALWAYS_INLINE="__attribute__((always_inline))"
+      AC_MSG_RESULT(yes)],
+    [DUMUX_ALWAYS_INLINE=""
+      AC_MSG_RESULT(no)])
   AC_LANG_POP([C++])
   AC_DEFINE_UNQUOTED(DUMUX_ALWAYS_INLINE, $DUMUX_ALWAYS_INLINE,
                      [USE WITH CARE: Forces a function to be inlined even for non-optimized builds])