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Merge topic 'TestBigEndian-cxx-only'

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ac0962ce TestBigEndian: Fix to work with CXX without C
This commit is contained in:
Brad King
2017-02-16 13:15:47 -05:00
committed by CMake Topic Stage
parent 60b5616af7 ac0962cead
commit fb3fd78d58
1 changed files with 19 additions and 7 deletions
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Modules/TestBigEndian.cmake
+19 -7
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@@ -19,21 +19,29 @@ macro(TEST_BIG_ENDIAN VARIABLE)
message(STATUS "Check if the system is big endian")
message(STATUS "Searching 16 bit integer")
if(CMAKE_C_COMPILER_LOADED)
set(_test_language "C")
elseif(CMAKE_CXX_COMPILER_LOADED)
set(_test_language "CXX")
else()
message(FATAL_ERROR "TEST_BIG_ENDIAN needs either C or CXX language enabled")
endif()
include(CheckTypeSize)
CHECK_TYPE_SIZE("unsigned short" CMAKE_SIZEOF_UNSIGNED_SHORT)
CHECK_TYPE_SIZE("unsigned short" CMAKE_SIZEOF_UNSIGNED_SHORT LANGUAGE ${_test_language})
if(CMAKE_SIZEOF_UNSIGNED_SHORT EQUAL 2)
message(STATUS "Using unsigned short")
set(CMAKE_16BIT_TYPE "unsigned short")
else()
CHECK_TYPE_SIZE("unsigned int" CMAKE_SIZEOF_UNSIGNED_INT)
CHECK_TYPE_SIZE("unsigned int" CMAKE_SIZEOF_UNSIGNED_INT LANGUAGE ${_test_language})
if(CMAKE_SIZEOF_UNSIGNED_INT)
message(STATUS "Using unsigned int")
set(CMAKE_16BIT_TYPE "unsigned int")
else()
CHECK_TYPE_SIZE("unsigned long" CMAKE_SIZEOF_UNSIGNED_LONG)
CHECK_TYPE_SIZE("unsigned long" CMAKE_SIZEOF_UNSIGNED_LONG LANGUAGE ${_test_language})
if(CMAKE_SIZEOF_UNSIGNED_LONG)
message(STATUS "Using unsigned long")
set(CMAKE_16BIT_TYPE "unsigned long")
@@ -45,17 +53,21 @@ macro(TEST_BIG_ENDIAN VARIABLE)
endif()
if(_test_language STREQUAL "CXX")
set(_test_file "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/TestEndianess.cpp")
else()
set(_test_file "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/TestEndianess.c")
endif()
configure_file("${CMAKE_ROOT}/Modules/TestEndianess.c.in"
"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/TestEndianess.c"
${_test_file}
@ONLY)
file(READ "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/TestEndianess.c"
TEST_ENDIANESS_FILE_CONTENT)
file(READ ${_test_file} TEST_ENDIANESS_FILE_CONTENT)
try_compile(HAVE_${VARIABLE}
"${CMAKE_BINARY_DIR}"
"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/TestEndianess.c"
${_test_file}
OUTPUT_VARIABLE OUTPUT
COPY_FILE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestEndianess.bin" )