d582c23a47
In the `try_compile` source file signature we propagate the caller's value of `CMAKE_<LANG>_FLAGS` into the test project. Extend this to propagate `CMAKE_<LANG>_FLAGS_<CONFIG>` too instead of always using the default value in the test project. This will be useful, for example, to allow the MSVC runtime library to be changed (e.g. `-MDd` => `-MTd`). However, some projects may currently depend on this not being done, so we need to activate the behavior using a policy. This change was originally made by commit v3.6.0-rc1~160^2 (try_compile: Honor CMAKE_<LANG>_FLAGS_<CONFIG> changes, 2016-04-11) but without the policy and so had to be reverted during the 3.6 release candidate cycle. Fixes #16174.
59 lines
2.1 KiB
CMake
59 lines
2.1 KiB
CMake
enable_language(C)
|
|
set(CMAKE_C_FLAGS_RELEASE "-DPP_ERROR ${CMAKE_C_FLAGS_DEBUG}")
|
|
set(CMAKE_TRY_COMPILE_CONFIGURATION Release)
|
|
|
|
#-----------------------------------------------------------------------------
|
|
message("before try_compile with CMP0066 WARN-default")
|
|
try_compile(RESULT ${CMAKE_CURRENT_BINARY_DIR}
|
|
${CMAKE_CURRENT_SOURCE_DIR}/src.c
|
|
OUTPUT_VARIABLE out
|
|
)
|
|
string(REPLACE "\n" "\n " out " ${out}")
|
|
if(NOT RESULT)
|
|
message(FATAL_ERROR "try_compile with CMP0066 WARN-default failed but should have passed:\n${out}")
|
|
else()
|
|
message(STATUS "try_compile with CMP0066 WARN-default worked as expected")
|
|
endif()
|
|
message("after try_compile with CMP0066 WARN-default")
|
|
|
|
#-----------------------------------------------------------------------------
|
|
set(CMAKE_POLICY_WARNING_CMP0066 ON)
|
|
try_compile(RESULT ${CMAKE_CURRENT_BINARY_DIR}
|
|
${CMAKE_CURRENT_SOURCE_DIR}/src.c
|
|
OUTPUT_VARIABLE out
|
|
)
|
|
string(REPLACE "\n" "\n " out " ${out}")
|
|
if(NOT RESULT)
|
|
message(FATAL_ERROR "try_compile with CMP0066 WARN-enabled failed but should have passed:\n${out}")
|
|
else()
|
|
message(STATUS "try_compile with CMP0066 WARN-enabled worked as expected")
|
|
endif()
|
|
|
|
#-----------------------------------------------------------------------------
|
|
cmake_policy(SET CMP0066 OLD)
|
|
try_compile(RESULT ${CMAKE_CURRENT_BINARY_DIR}
|
|
${CMAKE_CURRENT_SOURCE_DIR}/src.c
|
|
OUTPUT_VARIABLE out
|
|
)
|
|
string(REPLACE "\n" "\n " out " ${out}")
|
|
if(NOT RESULT)
|
|
message(FATAL_ERROR "try_compile with CMP0066 OLD failed but should have passed:\n${out}")
|
|
else()
|
|
message(STATUS "try_compile with CMP0066 OLD worked as expected")
|
|
endif()
|
|
|
|
#-----------------------------------------------------------------------------
|
|
cmake_policy(SET CMP0066 NEW)
|
|
try_compile(RESULT ${CMAKE_CURRENT_BINARY_DIR}
|
|
${CMAKE_CURRENT_SOURCE_DIR}/src.c
|
|
OUTPUT_VARIABLE out
|
|
)
|
|
string(REPLACE "\n" "\n " out " ${out}")
|
|
if(RESULT)
|
|
message(FATAL_ERROR "try_compile with CMP0066 NEW passed but should have failed:\n${out}")
|
|
elseif(NOT "x${out}" MATCHES "PP_ERROR is defined")
|
|
message(FATAL_ERROR "try_compile with CMP0066 NEW did not fail with PP_ERROR:\n${out}")
|
|
else()
|
|
message(STATUS "try_compile with CMP0066 NEW worked as expected")
|
|
endif()
|