Use default Autoconf's AC_LANG_PROGRAM (#13565)

This adds default test program prologue and body of
`int main(void) { return 0; }` where possible.

Author: petk

build/php.m4

@@ -1465,7 +1465,7 @@ AC_DEFUN([PHP_CHECK_FUNC_LIB],[
   if test "$found" = "yes"; then
     ac_libs=$LIBS
     LIBS="$LIBS -l$2"
-    AC_RUN_IFELSE([AC_LANG_SOURCE([[int main(void) { return (0); }]])],[found=yes],[found=no],[
+    AC_RUN_IFELSE([AC_LANG_PROGRAM()],[found=yes],[found=no],[
       dnl Cross compilation.
       found=yes
     ])

configure.ac

@@ -1123,7 +1123,7 @@ case $host_alias in
     save_LDFLAGS=$LDFLAGS
     LDFLAGS="$LDFLAGS -Wl,-zcommon-page-size=2097152 -Wl,-zmax-page-size=2097152"
     AC_RUN_IFELSE(
-        [AC_LANG_SOURCE([[int main() {return 0;}]])],
+        [AC_LANG_PROGRAM()],
         [ac_cv_common_page_size=yes],
         [ac_cv_common_page_size=no],
         [ac_cv_common_page_size=no])
@@ -1137,7 +1137,7 @@ case $host_alias in
         save_LDFLAGS=$LDFLAGS
         LDFLAGS="$LDFLAGS -Wl,-zmax-page-size=2097152"
         AC_RUN_IFELSE(
-            [AC_LANG_SOURCE([[int main() {return 0;}]])],
+            [AC_LANG_PROGRAM()],
             [ac_cv_max_page_size=yes],
             [ac_cv_max_page_size=no],
             [ac_cv_max_page_size=no])