fix compilation error on Windows caused by https://trac.osgeo.org/gra…

…ss/changeset/73982 git-svn-id: https://svn.osgeo.org/grass/grass/trunk@73998 15284696-431f-4ddb-bdfa-cd5b030d7da7
rs-aesi · Jan 22, 2019 · 40a9da4 · 40a9da4
1 parent 7cf397a
commit 40a9da4
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/include/gis.h b/include/gis.h
@@ -68,10 +68,10 @@ static const char *GRASS_copyright __attribute__ ((unused))
 #endif
 
 /*! \brief Generate warning if function return value is unused */
-#if __GNUC_PREREQ (3,4)
-    #define WARN_UNUSED_RESULT __attribute__ ((warn_unused_result))
+#if __GNUC__ && (__GNUC__ >= 3 && __GNUC_MINOR__ >= 4)
+#   define WARN_UNUSED_RESULT __attribute__ ((warn_unused_result))
 #else
-    #define WARN_UNUSED_RESULT
+#   define WARN_UNUSED_RESULT
 #endif
 
 /*!