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tools: Check endianness with CMake

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This is to match commit d05d956714, which replaced Boost macros with a
similar check using CMake.
This commit is contained in:
Wade Fife 2026-03-13 12:49:35 -05:00 committed by Jörg Hofrichter
parent 168fc70df6
commit 92c7a2c096
1 changed files with 30 additions and 0 deletions
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30
tools/dissectors/CMakeLists.txt
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@ -105,9 +105,39 @@ endif(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
set(UHD_INCLUDE_DIR "${UHD_HOST_ROOT}/include")
set(UHDLIB_INCLUDE_DIR "${UHD_HOST_ROOT}/lib/include")
# Detect host endianness
if(CMAKE_VERSION VERSION_GREATER_EQUAL "3.20")
# Use CMAKE_CXX_BYTE_ORDER for CMake 3.20 and later
if(CMAKE_CXX_BYTE_ORDER STREQUAL "BIG_ENDIAN")
set(UHD_ENDIANNESS_MACRO "UHD_BIG_ENDIAN")
elseif(CMAKE_CXX_BYTE_ORDER STREQUAL "LITTLE_ENDIAN")
set(UHD_ENDIANNESS_MACRO "UHD_LITTLE_ENDIAN")
else()
message(FATAL_ERROR "Unknown byte order: ${CMAKE_CXX_BYTE_ORDER}")
endif()
else()
# Use test_big_endian for older CMake versions
include(TestBigEndian)
test_big_endian(__IS_BIG_ENDIAN)
if(__IS_BIG_ENDIAN)
set(UHD_ENDIANNESS_MACRO "UHD_BIG_ENDIAN")
else()
set(UHD_ENDIANNESS_MACRO "UHD_LITTLE_ENDIAN")
endif()
if(NOT DEFINED __IS_BIG_ENDIAN)
message(FATAL_ERROR "Could not determine target endianness!")
endif()
endif()
message(STATUS "Detected target endianness: ${UHD_ENDIANNESS_MACRO}")
configure_file(
${UHD_INCLUDE_DIR}/uhd/types/endianness.hpp.in
${CMAKE_BINARY_DIR}/include/uhd/types/endianness.hpp
)
include_directories(
${UHD_INCLUDE_DIR}
${UHDLIB_INCLUDE_DIR}
${CMAKE_BINARY_DIR}/include
${GLIB2_INCLUDE_DIRS}
${Wireshark_INCLUDE_DIR}
)