cmake: cleanup logic that sets flags per target/subdir
The previous logic that used a COMMON_*_FLAGS intermediate variable and then re-assigned CMAKE_*_FLAGS before including each subdirectory was confusing and ugly. This PR is the right way to do it. This commit is purely refactoring: built binaries unchanged.
This commit is contained in:
redfish
parent
0fbe9cfcdb
commit
042db0bd0f
2 changed files with 36 additions and 32 deletions
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@ -261,17 +261,10 @@ option(STACK_TRACE "Install a hook that dumps stack on exception" ${DEFAULT_STAC
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if(STACK_TRACE)
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message(STATUS "Stack trace on exception enabled")
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# Don't set CMAKE_*_FLAGS directly or add_definitions, because this flag must
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# not be set for tests targets (TODO: per-target logic into nested CMakeLists)
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set(STACK_TRACE_C_FLAG "-DSTACK_TRACE")
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if (STATIC)
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set(STACK_TRACE_LINK_FLAG "-Wl,--wrap=__cxa_throw")
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endif()
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else()
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message(STATUS "Stack trace on exception disabled")
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endif()
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if (UNIX AND NOT APPLE)
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# Note that at the time of this writing the -Wstrict-prototypes flag added below will make this fail
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set(THREADS_PREFER_PTHREAD_FLAG ON)
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@ -309,8 +302,8 @@ link_directories(${LIBUNWIND_LIBRARY_DIRS})
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if(MSVC)
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add_definitions("/bigobj /MP /W3 /GS- /D_CRT_SECURE_NO_WARNINGS /wd4996 /wd4345 /D_WIN32_WINNT=0x0600 /DWIN32_LEAN_AND_MEAN /DGTEST_HAS_TR1_TUPLE=0 /FIinline_c.h /D__SSE4_1__")
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# set(COMMON_C_FLAGS "${COMMON_C_FLAGS} /Dinline=__inline")
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set(COMMON_EXE_LINKER_FLAGS "${COMMON_EXE_LINKER_FLAGS} /STACK:10485760")
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# set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /Dinline=__inline")
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /STACK:10485760")
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if(STATIC)
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foreach(VAR CMAKE_C_FLAGS_DEBUG CMAKE_CXX_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE CMAKE_CXX_FLAGS_RELEASE)
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string(REPLACE "/MD" "/MT" ${VAR} "${${VAR}}")
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@ -348,7 +341,7 @@ else()
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include_directories(SYSTEM src/platform/mingw)
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# mingw doesn't support LTO (multiple definition errors at link time)
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set(USE_LTO_DEFAULT false)
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set(COMMON_EXE_LINKER_FLAGS "${COMMON_EXE_LINKER_FLAGS} -Wl,--stack,10485760")
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--stack,10485760")
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if(NOT BUILD_64)
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add_definitions(-DWINVER=0x0501 -D_WIN32_WINNT=0x0501)
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endif()
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@ -362,20 +355,20 @@ else()
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set(STATIC_ASSERT_FLAG "-Dstatic_assert=_Static_assert")
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endif()
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set(COMMON_C_FLAGS "${COMMON_C_FLAGS} -std=c11 -D_GNU_SOURCE ${MINGW_FLAG} ${STATIC_ASSERT_FLAG} ${WARNINGS} ${C_WARNINGS} ${ARCH_FLAG}")
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set(COMMON_CXX_FLAGS "${COMMON_CXX_FLAGS} -std=c++11 -D_GNU_SOURCE ${MINGW_FLAG} ${WARNINGS} ${CXX_WARNINGS} ${ARCH_FLAG}")
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c11 -D_GNU_SOURCE ${MINGW_FLAG} ${STATIC_ASSERT_FLAG} ${WARNINGS} ${C_WARNINGS} ${ARCH_FLAG}")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -D_GNU_SOURCE ${MINGW_FLAG} ${WARNINGS} ${CXX_WARNINGS} ${ARCH_FLAG}")
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# With GCC 6.1.1 the compiled binary malfunctions due to aliasing. Until that
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# is fixed in the code (Issue #847), force compiler to be conservative.
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set(COMMON_C_FLAGS "${COMMON_C_FLAGS} -fno-strict-aliasing")
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set(COMMON_CXX_FLAGS "${COMMON_CXX_FLAGS} -fno-strict-aliasing")
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fno-strict-aliasing")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-strict-aliasing")
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option(NO_AES "Explicitly disable AES support" ${NO_AES})
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if(NOT NO_AES AND NOT (ARM6 OR ARM7))
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message(STATUS "AES support enabled")
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set(COMMON_C_FLAGS "${COMMON_C_FLAGS} -maes")
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set(COMMON_CXX_FLAGS "${COMMON_CXX_FLAGS} -maes")
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -maes")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -maes")
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elseif(ARM7 OR ARM6)
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message(STATUS "AES support disabled (not available on ARM)")
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else()
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@ -384,18 +377,18 @@ else()
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if(ARM6)
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message(STATUS "Setting ARM6 C and C++ flags")
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set(COMMON_C_FLAGS "${COMMON_C_FLAGS} -mfpu=vfp -mfloat-abi=hard")
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set(COMMON_CXX_FLAGS "${COMMON_CXX_FLAGS} -mfpu=vfp -mfloat-abi=hard")
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfpu=vfp -mfloat-abi=hard")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfpu=vfp -mfloat-abi=hard")
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endif()
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if(ARM7)
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message(STATUS "Setting ARM7 C and C++ flags")
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set(COMMON_C_FLAGS "${COMMON_C_FLAGS} -O2 -mfloat-abi=hard")
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set(COMMON_CXX_FLAGS "${COMMON_CXX_FLAGS} -O2 -mfloat-abi=hard")
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set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O2 -mfloat-abi=hard")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2 -mfloat-abi=hard")
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endif()
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if(APPLE)
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set(COMMON_CXX_FLAGS "${COMMON_CXX_FLAGS} -DGTEST_HAS_TR1_TUPLE=0")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DGTEST_HAS_TR1_TUPLE=0")
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endif()
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if(CMAKE_C_COMPILER_ID STREQUAL "GNU" AND NOT (CMAKE_C_COMPILER_VERSION VERSION_LESS 4.8))
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set(DEBUG_FLAGS "-g3 -Og")
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@ -413,8 +406,8 @@ else()
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set(USE_LTO false)
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# explicitly define stdlib for older versions of clang
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if(CMAKE_C_COMPILER_VERSION VERSION_LESS 3.7)
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set(COMMON_CXX_FLAGS "${COMMON_CXX_FLAGS} -stdlib=libc++")
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set(COMMON_EXE_LINKER_FLAGS "${COMMON_EXE_LINKER_FLAGS} -stdlib=libc++")
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -stdlib=libc++")
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endif()
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endif()
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@ -437,7 +430,7 @@ else()
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set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ${RELEASE_FLAGS}")
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if(STATIC AND NOT APPLE AND NOT FREEBSD AND NOT OPENBSD)
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set(COMMON_EXE_LINKER_FLAGS "${COMMON_EXE_LINKER_FLAGS} -static-libgcc -static-libstdc++")
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libgcc -static-libstdc++")
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endif()
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endif()
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@ -486,22 +479,21 @@ endif()
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include(version.cmake)
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# When building the following sources treat warnings as errors, install throw wrapper
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set(CMAKE_C_FLAGS "${COMMON_C_FLAGS} ${WARNINGS_AS_ERRORS_FLAG} ${STACK_TRACE_C_FLAG}")
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set(CMAKE_CXX_FLAGS "${COMMON_CXX_FLAGS} ${WARNINGS_AS_ERRORS_FLAG} ${STACK_TRACE_C_FLAG}")
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set(CMAKE_EXE_LINKER_FLAGS "${COMMON_EXE_LINKER_FLAGS} ${STACK_TRACE_LINK_FLAG}")
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function (treat_warnings_as_errors dirs)
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foreach(dir ${ARGV})
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set_property(DIRECTORY ${dir}
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APPEND PROPERTY COMPILE_FLAGS "-Werror")
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endforeach()
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endfunction()
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add_subdirectory(contrib)
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add_subdirectory(src)
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treat_warnings_as_errors(contrib src)
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option(BUILD_TESTS "Build tests." OFF)
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if(BUILD_TESTS)
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# When building tests, don't add some of the flags added to source build
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set(CMAKE_C_FLAGS "${COMMON_C_FLAGS}")
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set(CMAKE_CXX_FLAGS "${COMMON_CXX_FLAGS}")
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set(CMAKE_EXE_LINKER_FLAGS "${COMMON_CXX_FLAGS}")
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add_subdirectory(tests)
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endif()
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@ -47,6 +47,17 @@ function (bitmonero_install_headers subdir)
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COMPONENT development)
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endfunction ()
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function (enable_stack_trace target)
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if(STACK_TRACE)
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set_property(TARGET ${target}
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APPEND PROPERTY COMPILER_DEFINITIONS "-DSTACK_TRACE")
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if (STATIC)
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set_property(TARGET "${target}"
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APPEND PROPERTY LINK_FLAGS "-Wl,--wrap=__cxa_throw")
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endif()
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endif()
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endfunction()
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function (bitmonero_add_executable name)
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source_group("${name}"
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FILES
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@ -63,6 +74,7 @@ function (bitmonero_add_executable name)
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set_property(TARGET "${name}"
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PROPERTY
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RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
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enable_stack_trace("${name}")
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endfunction ()
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function (bitmonero_add_library name)
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