From 263bb4e172d58a4e8ce55f147bc46bf50dd7fde1 Mon Sep 17 00:00:00 2001
From: Alexander Neundorf <neundorf@kde.org>
Date: Mon, 13 Aug 2007 11:04:19 -0400
Subject: ENH: for universal binaries return the endianess based on the
processor
Alex
---
Modules/TestBigEndian.cmake | 26 ++++++++++++++++++--------
1 file changed, 18 insertions(+), 8 deletions(-)
diff --git a/Modules/TestBigEndian.cmake b/Modules/TestBigEndian.cmake
index 9d5cd72..ffc3a0c 100644
--- a/Modules/TestBigEndian.cmake
+++ b/Modules/TestBigEndian.cmake
@@ -42,7 +42,7 @@ MACRO(TEST_BIG_ENDIAN VARIABLE)
FILE(READ "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/TestEndianess.c"
TEST_ENDIANESS_FILE_CONTENT)
-
+
TRY_COMPILE(HAVE_${VARIABLE}
"${CMAKE_BINARY_DIR}"
"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/TestEndianess.c"
@@ -53,23 +53,33 @@ MACRO(TEST_BIG_ENDIAN VARIABLE)
FILE(STRINGS "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestEndianess.bin"
CMAKE_TEST_ENDIANESS_STRINGS_LE LIMIT_COUNT 1 REGEX "THIS IS LITTLE ENDIAN")
-
+
FILE(STRINGS "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestEndianess.bin"
CMAKE_TEST_ENDIANESS_STRINGS_BE LIMIT_COUNT 1 REGEX "THIS IS BIG ENDIAN")
-
+
+ # on mac, if there are universal binaries built both will be true
+ # return the result depending on the machine on which cmake runs
+ IF(CMAKE_TEST_ENDIANESS_STRINGS_BE AND CMAKE_TEST_ENDIANESS_STRINGS_LE)
+ IF(CMAKE_SYSTEM_PROCESSOR MATCHES powerpc)
+ SET(CMAKE_TEST_ENDIANESS_STRINGS_BE TRUE)
+ SET(CMAKE_TEST_ENDIANESS_STRINGS_LE FALSE)
+ ELSE(CMAKE_SYSTEM_PROCESSOR MATCHES powerpc)
+ SET(CMAKE_TEST_ENDIANESS_STRINGS_BE FALSE)
+ SET(CMAKE_TEST_ENDIANESS_STRINGS_LE TRUE)
+ ENDIF(CMAKE_SYSTEM_PROCESSOR MATCHES powerpc)
+ MESSAGE(STATUS "TEST_BIG_ENDIAN found different results, consider setting CMAKE_OSX_ARCHITECTURES or CMAKE_TRY_COMPILE_OSX_ARCHITECTURES to one or no architecture !")
+ ENDIF(CMAKE_TEST_ENDIANESS_STRINGS_BE AND CMAKE_TEST_ENDIANESS_STRINGS_LE)
+
IF(CMAKE_TEST_ENDIANESS_STRINGS_LE)
SET(${VARIABLE} 0 CACHE INTERNAL "Result of TEST_BIG_ENDIAN" FORCE)
MESSAGE(STATUS "Check if the system is big endian - little endian")
ENDIF(CMAKE_TEST_ENDIANESS_STRINGS_LE)
-
+
IF(CMAKE_TEST_ENDIANESS_STRINGS_BE)
SET(${VARIABLE} 1 CACHE INTERNAL "Result of TEST_BIG_ENDIAN" FORCE)
MESSAGE(STATUS "Check if the system is big endian - big endian")
ENDIF(CMAKE_TEST_ENDIANESS_STRINGS_BE)
-
- IF(CMAKE_TEST_ENDIANESS_STRINGS_BE AND CMAKE_TEST_ENDIANESS_STRINGS_LE)
- MESSAGE(STATUS "TEST_BIG_ENDIAN found different results, consider setting CMAKE_OSX_ARCHITECTURES or CMAKE_TRY_COMPILE_OSX_ARCHITECTURES to one or no architecture !")
- ENDIF(CMAKE_TEST_ENDIANESS_STRINGS_BE AND CMAKE_TEST_ENDIANESS_STRINGS_LE)
+
IF(NOT CMAKE_TEST_ENDIANESS_STRINGS_BE AND NOT CMAKE_TEST_ENDIANESS_STRINGS_LE)
MESSAGE(SEND_ERROR "TEST_BIG_ENDIAN found no result!")
ENDIF(NOT CMAKE_TEST_ENDIANESS_STRINGS_BE AND NOT CMAKE_TEST_ENDIANESS_STRINGS_LE)
--
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