If the macro exists, use it, otherwise use the Makefile.frag

diff --git a/ext/pdo/config.m4 b/ext/pdo/config.m4
index 3917d80a5e09710da48ca2078631cfe932f10b30..d220a2d039a5c1087737b24fa213b26bdf7d1b51 100755 (executable)
--- a/ext/pdo/config.m4
+++ b/ext/pdo/config.m4
@@ -52,9 +52,10 @@ for more detail on this issue.
   fi
   PHP_NEW_EXTENSION(pdo, pdo.c pdo_dbh.c pdo_stmt.c pdo_sql_parser.c pdo_sqlstate.c, $ext_shared)
   
-  dnl When we care only about PHP 5.1 and above, we'll do it this way
-  dnl PHP_INSTALL_HEADERS(ext/pdo, [php_pdo.h php_pdo_driver.h])
-
-  dnl But since that breaks everyone developing against a stable release, we'll do it this way
-  PHP_ADD_MAKEFILE_FRAGMENT
+  ifdef([PHP_INSTALL_HEADERS],
+  [
+    PHP_INSTALL_HEADERS(ext/pdo, [php_pdo.h php_pdo_driver.h])
+  ], [
+    PHP_ADD_MAKEFILE_FRAGMENT
+  ])
 fi