# HG changeset patch
# User Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
# Date 1419955677 -10800
# Node ID 2cfa650836218a0d02713458465f8905397968bf
# Parent  9b789de8e5df1c3bbe933320db1bc239da6a9b27
Use ghc return value instead of looking for the stderr, do not throw error when an haskell module throws a build failure, e.g. because of false positives like this one (debian/arm*)

"You are using a new version of LLVM that hasn't been tested yet!
We will try though..."

diff -r 9b789de8e5df -r 2cfa65083621 cmake_modules/CheckHaskellModuleExists.cmake
--- a/cmake_modules/CheckHaskellModuleExists.cmake	Sat Dec 27 22:09:31 2014 +0300
+++ b/cmake_modules/CheckHaskellModuleExists.cmake	Tue Dec 30 19:07:57 2014 +0300
@@ -30,11 +30,11 @@
                     "-DPARAMETERS=${PARAMETERS}"
                     -cpp
                     -c "${CMAKE_MODULE_PATH}/checkModule.hs"
+                    RESULT_VARIABLE COMMAND_RESULT
                     ERROR_VARIABLE BUILD_ERROR
                     OUTPUT_STRIP_TRAILING_WHITESPACE
                     )
-
-    if("${BUILD_ERROR}" STREQUAL "")
+    if(${COMMAND_RESULT} EQUAL 0)
       message(STATUS "Looking for ${FUNCTION} in ${MODULE} - found")
       set(${VARIABLE} 1 CACHE INTERNAL "Have module ${MODULE}")
       file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log