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-rw-r--r--configure.ac5
1 files changed, 5 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index d235f9f0a..00fd9c9b0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -25,6 +25,11 @@ AM_INIT_AUTOMAKE([-Wall foreign 1.9 dist-bzip2 dist-xz check-news subdir-objects
m4_ifndef([AM_SILENT_RULES], [m4_define([AM_SILENT_RULES],[])])
AM_SILENT_RULES([no])
+
+dnl Flag all GP_ strings in result as error unless specifically allowed.
+m4_pattern_forbid([^_?GP_])dnl
+
+
GP_CHECK_SHELL_ENVIRONMENT
GP_CONFIG_MSG([Build])
GP_CONFIG_MSG([Source code location],[${srcdir}])