mirror of
https://github.com/ZDoom/zdoom-macos-deps.git
synced 2024-11-26 22:01:25 +00:00
139 lines
5.2 KiB
CMake
139 lines
5.2 KiB
CMake
# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
|
|
# file Copyright.txt or https://cmake.org/licensing for details.
|
|
|
|
#[=======================================================================[.rst:
|
|
TestBigEndian
|
|
-------------
|
|
|
|
.. deprecated:: 3.20
|
|
|
|
Supserseded by the :variable:`CMAKE_<LANG>_BYTE_ORDER` variable.
|
|
|
|
Check if the target architecture is big endian or little endian.
|
|
|
|
.. command:: test_big_endian
|
|
|
|
.. code-block:: cmake
|
|
|
|
test_big_endian(<var>)
|
|
|
|
Stores in variable ``<var>`` either 1 or 0 indicating whether the
|
|
target architecture is big or little endian.
|
|
|
|
#]=======================================================================]
|
|
include_guard()
|
|
|
|
include(CheckTypeSize)
|
|
|
|
function(TEST_BIG_ENDIAN VARIABLE)
|
|
if(";${CMAKE_C_BYTE_ORDER};${CMAKE_CXX_BYTE_ORDER};${CMAKE_CUDA_BYTE_ORDER};${CMAKE_OBJC_BYTE_ORDER};${CMAKE_OBJCXX_BYTE_ORDER};" MATCHES ";(BIG_ENDIAN|LITTLE_ENDIAN);")
|
|
set(order "${CMAKE_MATCH_1}")
|
|
if(order STREQUAL "BIG_ENDIAN")
|
|
set("${VARIABLE}" 1 PARENT_SCOPE)
|
|
else()
|
|
set("${VARIABLE}" 0 PARENT_SCOPE)
|
|
endif()
|
|
else()
|
|
__TEST_BIG_ENDIAN_LEGACY_IMPL(is_big)
|
|
set("${VARIABLE}" "${is_big}" PARENT_SCOPE)
|
|
endif()
|
|
endfunction()
|
|
|
|
macro(__TEST_BIG_ENDIAN_LEGACY_IMPL VARIABLE)
|
|
if(NOT DEFINED HAVE_${VARIABLE})
|
|
message(CHECK_START "Check if the system is big endian")
|
|
message(CHECK_START "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()
|
|
|
|
CHECK_TYPE_SIZE("unsigned short" CMAKE_SIZEOF_UNSIGNED_SHORT LANGUAGE ${_test_language})
|
|
if(CMAKE_SIZEOF_UNSIGNED_SHORT EQUAL 2)
|
|
message(CHECK_PASS "Using unsigned short")
|
|
set(CMAKE_16BIT_TYPE "unsigned short")
|
|
else()
|
|
CHECK_TYPE_SIZE("unsigned int" CMAKE_SIZEOF_UNSIGNED_INT LANGUAGE ${_test_language})
|
|
if(CMAKE_SIZEOF_UNSIGNED_INT)
|
|
message(CHECK_PASS "Using unsigned int")
|
|
set(CMAKE_16BIT_TYPE "unsigned int")
|
|
|
|
else()
|
|
|
|
CHECK_TYPE_SIZE("unsigned long" CMAKE_SIZEOF_UNSIGNED_LONG LANGUAGE ${_test_language})
|
|
if(CMAKE_SIZEOF_UNSIGNED_LONG)
|
|
message(CHECK_PASS "Using unsigned long")
|
|
set(CMAKE_16BIT_TYPE "unsigned long")
|
|
else()
|
|
message(FATAL_ERROR "no suitable type found")
|
|
endif()
|
|
|
|
endif()
|
|
|
|
endif()
|
|
|
|
if(_test_language STREQUAL "CXX")
|
|
set(_test_file TestEndianess.cpp)
|
|
else()
|
|
set(_test_file TestEndianess.c)
|
|
endif()
|
|
|
|
file(READ "${CMAKE_ROOT}/Modules/TestEndianess.c.in" TEST_ENDIANESS_FILE_CONTENT)
|
|
string(CONFIGURE "${TEST_ENDIANESS_FILE_CONTENT}" TEST_ENDIANESS_FILE_CONTENT @ONLY)
|
|
|
|
try_compile(HAVE_${VARIABLE}
|
|
SOURCE_FROM_VAR "${_test_file}" TEST_ENDIANESS_FILE_CONTENT
|
|
OUTPUT_VARIABLE OUTPUT
|
|
COPY_FILE "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/TestEndianess.bin" )
|
|
|
|
if(HAVE_${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()
|
|
set(CMAKE_TEST_ENDIANESS_STRINGS_BE FALSE)
|
|
set(CMAKE_TEST_ENDIANESS_STRINGS_LE TRUE)
|
|
endif()
|
|
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()
|
|
|
|
if(CMAKE_TEST_ENDIANESS_STRINGS_LE)
|
|
set(${VARIABLE} 0 CACHE INTERNAL "Result of TEST_BIG_ENDIAN" FORCE)
|
|
message(CHECK_PASS "little endian")
|
|
endif()
|
|
|
|
if(CMAKE_TEST_ENDIANESS_STRINGS_BE)
|
|
set(${VARIABLE} 1 CACHE INTERNAL "Result of TEST_BIG_ENDIAN" FORCE)
|
|
message(CHECK_PASS "big endian")
|
|
endif()
|
|
|
|
if(NOT CMAKE_TEST_ENDIANESS_STRINGS_BE AND NOT CMAKE_TEST_ENDIANESS_STRINGS_LE)
|
|
message(CHECK_FAIL "TEST_BIG_ENDIAN found no result!")
|
|
message(SEND_ERROR "TEST_BIG_ENDIAN found no result!")
|
|
endif()
|
|
|
|
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
|
|
"Determining if the system is big endian passed with the following output:\n${OUTPUT}\n${_test_file}:\n${TEST_ENDIANESS_FILE_CONTENT}\n\n")
|
|
|
|
else()
|
|
message(CHECK_FAIL "failed")
|
|
file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
|
|
"Determining if the system is big endian failed with the following output:\n${OUTPUT}\n${_test_file}:\n${TEST_ENDIANESS_FILE_CONTENT}\n\n")
|
|
set(${VARIABLE})
|
|
endif()
|
|
endif()
|
|
endmacro()
|