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CMake: make unsequenced modifications an error

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They not only result in discrepancies between different compiler,
but trigger undefined behavior. Avoid them by having them break
the CMake build and CI.
This commit is contained in:
Ahmad Fatoum 2019-05-04 23:10:17 +02:00
parent 43bfb979e5
commit 23c1c0bdb2
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CMakeLists.txt
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@ -19,6 +19,7 @@ endif()
include(AddIfFlagCompiles)
add_if_flag_compiles(-Werror=pointer-arith CMAKE_C_FLAGS)
add_if_flag_compiles(-Werror=implicit-function-declaration CMAKE_C_FLAGS)
add_if_flag_compiles(-Werror=unsequenced CMAKE_C_FLAGS)
# src/external/jar_xm.h does shady stuff
add_if_flag_compiles(-fno-strict-aliasing CMAKE_C_FLAGS)