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diff lwlib/config.h.in @ 438:84b14dcb0985 r21-2-27

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Import from CVS: tag r21-2-27
author cvs
date Mon, 13 Aug 2007 11:32:25 +0200
parents 9d177e8d4150
children abe6d1db359e
line wrap: on
line diff
--- a/lwlib/config.h.in	Mon Aug 13 11:31:26 2007 +0200
+++ b/lwlib/config.h.in	Mon Aug 13 11:32:25 2007 +0200
@@ -32,9 +32,12 @@
 /* The path to the Athena widgets - the usual value is `X11/Xaw' */
 #undef ATHENA_H_PATH
 
-/* For use in #include statements.  This extra level of macro indirection
-   is necessary because you can't use macros directly within <> or "" */
-#define ATHENA_INCLUDE(header_file) <ATHENA_H_PATH/header_file>
+/* For use in #include statements.
+   You can't use macros directly within the <> of a #include statement.
+   The multiply nested macros are necessary to make old gcc's happy. */
+#define INCLUDE_GLUE_2(dirname,basename) <##dirname##/##basename##>
+#define INCLUDE_GLUE_1(dirname,basename) INCLUDE_GLUE_2(dirname,basename)
+#define ATHENA_INCLUDE(header_file) INCLUDE_GLUE_1(ATHENA_H_PATH,header_file)
 
 
 #endif /* _LWLIB_CONFIG_H_ */