From fb6877432c1b6c4b3e8f31d61b9f053921fccc3a Mon Sep 17 00:00:00 2001
From: Rolf Eike Beer <eike@sf-mail.de>
Date: Mon, 18 Oct 2010 12:04:07 +0200
Subject: [PATCH] FindBISON: Use C locale to detect version

---
 Modules/FindBISON.cmake |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/Modules/FindBISON.cmake b/Modules/FindBISON.cmake
index 6021b12..b4d4e41 100644
--- a/Modules/FindBISON.cmake
+++ b/Modules/FindBISON.cmake
@@ -51,6 +51,10 @@ FIND_PROGRAM(BISON_EXECUTABLE bison DOC "path to the bison executable")
 MARK_AS_ADVANCED(BISON_EXECUTABLE)
 
 IF(BISON_EXECUTABLE)
+  # the bison commands should be executed with the C locale, otherwise
+  # the message (which are parsed) may be translated
+  SET(_Bison_SAVED_LC_ALL "$ENV{LC_ALL}")
+  SET(ENV{LC_ALL} C)
 
   EXECUTE_PROCESS(COMMAND ${BISON_EXECUTABLE} --version
     OUTPUT_VARIABLE BISON_version_output
@@ -64,6 +68,8 @@ IF(BISON_EXECUTABLE)
       BISON_VERSION "${BISON_version_output}")
   ENDIF()
 
+  SET(ENV{LC_ALL} ${_Bison_SAVED_LC_ALL})
+
   # internal macro
   MACRO(BISON_TARGET_option_verbose Name BisonOutput filename)
     LIST(APPEND BISON_TARGET_cmdopt "--verbose")
-- 
1.6.4.2