diff --git a/build-defs.h.in b/build-defs.h.in
index 2e653f18c8a..f36faee6670 100644
--- a/build-defs.h.in
+++ b/build-defs.h.in
@@ -35,10 +35,10 @@
 #define PHP_FHTTPD_INCLUDE      ""
 #define PHP_FHTTPD_LIB          ""
 #define PHP_FHTTPD_TARGET       ""
-#define PHP_BINNAME		""
-#define PHP_CFLAGS		""
+#define PHP_BINNAME		"@BINNAME@"
+#define PHP_CFLAGS		"@CFLAGS@"
 #define PHP_DBASE_LIB		""
-#define PHP_DEBUG		""
+#define PHP_DEBUG		"@DEBUG_CFLAGS@"
 #define PHP_GDBM_INCLUDE	""
 #define PHP_HSREGEX		""
 #define PHP_IBASE_INCLUDE	""
@@ -47,7 +47,7 @@
 #define PHP_IFX_INCLUDE		""
 #define PHP_IFX_LFLAGS		""
 #define PHP_IFX_LIBS		""
-#define PHP_INSTALL_IT		""
+#define PHP_INSTALL_IT		"@INSTALL_IT@"
 #define PHP_IODBC_INCLUDE	""
 #define PHP_IODBC_LFLAGS	""
 #define PHP_IODBC_LIBS		""