diff options
Diffstat (limited to 'Modules')
| -rw-r--r-- | Modules/TestBigEndian.cmake | 36 |
1 files changed, 28 insertions, 8 deletions
diff --git a/Modules/TestBigEndian.cmake b/Modules/TestBigEndian.cmake index 8a769b7..ea8ca73 100644 --- a/Modules/TestBigEndian.cmake +++ b/Modules/TestBigEndian.cmake @@ -5,19 +5,41 @@ TestBigEndian ------------- -Define macro to determine endian type +.. deprecated:: 3.20 -Check if the system is big endian or little endian + 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. - TEST_BIG_ENDIAN(VARIABLE) - VARIABLE - variable to store the result to #]=======================================================================] +include_guard() include(CheckTypeSize) -macro(TEST_BIG_ENDIAN VARIABLE) +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") @@ -119,5 +141,3 @@ macro(TEST_BIG_ENDIAN VARIABLE) endif() endif() endmacro() - - |