diff options
Diffstat (limited to 'third_party/aom/build/cmake/compiler_flags.cmake')
| -rw-r--r-- | third_party/aom/build/cmake/compiler_flags.cmake | 349 |
1 files changed, 175 insertions, 174 deletions
diff --git a/third_party/aom/build/cmake/compiler_flags.cmake b/third_party/aom/build/cmake/compiler_flags.cmake index aa34b83aef..79192c1fa8 100644 --- a/third_party/aom/build/cmake/compiler_flags.cmake +++ b/third_party/aom/build/cmake/compiler_flags.cmake @@ -1,14 +1,16 @@ -## -## Copyright (c) 2016, Alliance for Open Media. All rights reserved -## -## This source code is subject to the terms of the BSD 2 Clause License and -## the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License -## was not distributed with this source code in the LICENSE file, you can -## obtain it at www.aomedia.org/license/software. If the Alliance for Open -## Media Patent License 1.0 was not distributed with this source code in the -## PATENTS file, you can obtain it at www.aomedia.org/license/patent. -## -if (NOT AOM_BUILD_CMAKE_COMPILER_FLAGS_CMAKE_) +# +# Copyright (c) 2016, Alliance for Open Media. All rights reserved +# +# This source code is subject to the terms of the BSD 2 Clause License and the +# Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License was +# not distributed with this source code in the LICENSE file, you can obtain it +# at www.aomedia.org/license/software. If the Alliance for Open Media Patent +# License 1.0 was not distributed with this source code in the PATENTS file, you +# can obtain it at www.aomedia.org/license/patent. +# +if(AOM_BUILD_CMAKE_COMPILER_FLAGS_CMAKE_) + return() +endif() # AOM_BUILD_CMAKE_COMPILER_FLAGS_CMAKE_ set(AOM_BUILD_CMAKE_COMPILER_FLAGS_CMAKE_ 1) include(CheckCCompilerFlag) @@ -27,302 +29,301 @@ set(AOM_FAILED_CXX_FLAGS) # otherwise. function(is_flag_present flag_cache flag out_is_present) string(FIND "${${flag_cache}}" "${flag}" flag_pos) - if (${flag_pos} EQUAL -1) + if(${flag_pos} EQUAL -1) set(${out_is_present} NO PARENT_SCOPE) - else () + else() set(${out_is_present} YES PARENT_SCOPE) - endif () -endfunction () + endif() +endfunction() # Appends $flag to $flags. Ignores scope via use of FORCE with set() call. -function (append_flag flags flag) +function(append_flag flags flag) string(FIND "${${flags}}" "${flag}" found) - if (${found} EQUAL -1) + if(${found} EQUAL -1) set(${flags} "${${flags}} ${flag}" CACHE STRING "" FORCE) - endif () -endfunction () + endif() +endfunction() # Checks C compiler for support of $c_flag. Adds $c_flag to all # $CMAKE_C_FLAGS_<CONFIG>s stored in AOM_C_CONFIGS when the compile test passes. # Caches $c_flag in $AOM_C_FLAGS or $AOM_FAILED_C_FLAGS depending on test # outcome. -function (add_c_flag_if_supported c_flag) - if (DEBUG_CMAKE_DISABLE_COMPILER_TESTS) +function(add_c_flag_if_supported c_flag) + if(DEBUG_CMAKE_DISABLE_COMPILER_TESTS) return() - endif () + endif() is_flag_present(AOM_C_FLAGS "${c_flag}" flag_ok) is_flag_present(AOM_FAILED_C_FLAGS "${c_flag}" flag_failed) - if (${flag_ok} OR ${flag_failed}) - return () - endif () + if(${flag_ok} OR ${flag_failed}) + return() + endif() unset(C_FLAG_SUPPORTED CACHE) message("Checking C compiler flag support for: " ${c_flag}) check_c_compiler_flag("${c_flag}" C_FLAG_SUPPORTED) - if (${C_FLAG_SUPPORTED}) + if(${C_FLAG_SUPPORTED}) append_flag(AOM_C_FLAGS "${c_flag}") - foreach (config ${AOM_C_CONFIGS}) + foreach(config ${AOM_C_CONFIGS}) unset(C_FLAG_FOUND) append_flag("${config}" "${c_flag}") - endforeach () - else () + endforeach() + else() append_flag(AOM_FAILED_C_FLAGS "${c_flag}") - endif () -endfunction () + endif() +endfunction() # Checks C++ compiler for support of $cxx_flag. Adds $cxx_flag to all # $CMAKE_CXX_FLAGS_<CONFIG>s stored in AOM_CXX_CONFIGS when the compile test -# passes. -# Caches $cxx_flag in $AOM_CXX_FLAGS or $AOM_FAILED_CXX_FLAGS depending on test -# outcome. -function (add_cxx_flag_if_supported cxx_flag) - if (DEBUG_CMAKE_DISABLE_COMPILER_TESTS) +# passes. Caches $cxx_flag in $AOM_CXX_FLAGS or $AOM_FAILED_CXX_FLAGS depending +# on test outcome. +function(add_cxx_flag_if_supported cxx_flag) + if(DEBUG_CMAKE_DISABLE_COMPILER_TESTS) return() - endif () + endif() is_flag_present(AOM_CXX_FLAGS "${cxx_flag}" flag_ok) is_flag_present(AOM_FAILED_CXX_FLAGS "${cxx_flag}" flag_failed) - if (${flag_ok} OR ${flag_failed}) - return () - endif () + if(${flag_ok} OR ${flag_failed}) + return() + endif() unset(CXX_FLAG_SUPPORTED CACHE) message("Checking C++ compiler flag support for: " ${cxx_flag}) check_cxx_compiler_flag("${cxx_flag}" CXX_FLAG_SUPPORTED) - if (${CXX_FLAG_SUPPORTED}) + if(${CXX_FLAG_SUPPORTED}) append_flag(AOM_CXX_FLAGS "${cxx_flag}") - foreach (config ${AOM_CXX_CONFIGS}) + foreach(config ${AOM_CXX_CONFIGS}) unset(CXX_FLAG_FOUND) append_flag("${config}" "${cxx_flag}") - endforeach () - else () + endforeach() + else() append_flag(AOM_FAILED_CXX_FLAGS "${cxx_flag}") - endif () -endfunction () + endif() +endfunction() # Convenience method for adding a flag to both the C and C++ compiler command # lines. -function (add_compiler_flag_if_supported flag) +function(add_compiler_flag_if_supported flag) add_c_flag_if_supported(${flag}) add_cxx_flag_if_supported(${flag}) -endfunction () +endfunction() # Checks C compiler for support of $c_flag and terminates generation when # support is not present. -function (require_c_flag c_flag update_c_flags) - if (DEBUG_CMAKE_DISABLE_COMPILER_TESTS) +function(require_c_flag c_flag update_c_flags) + if(DEBUG_CMAKE_DISABLE_COMPILER_TESTS) return() - endif () + endif() is_flag_present(AOM_C_FLAGS "${c_flag}" flag_ok) - if (${flag_ok}) - return () - endif () + if(${flag_ok}) + return() + endif() - if (NOT "${AOM_EXE_LINKER_FLAGS}" STREQUAL "") + if(NOT "${AOM_EXE_LINKER_FLAGS}" STREQUAL "") aom_push_var(CMAKE_EXE_LINKER_FLAGS "${AOM_EXE_LINKER_FLAGS}") - endif () + endif() unset(HAVE_C_FLAG CACHE) message("Checking C compiler flag support for: " ${c_flag}) check_c_compiler_flag("${c_flag}" HAVE_C_FLAG) - if (NOT HAVE_C_FLAG) + if(NOT HAVE_C_FLAG) message(FATAL_ERROR - "${PROJECT_NAME} requires support for C flag: ${c_flag}.") - endif () + "${PROJECT_NAME} requires support for C flag: ${c_flag}.") + endif() - if (NOT "${AOM_EXE_LINKER_FLAGS}" STREQUAL "") + if(NOT "${AOM_EXE_LINKER_FLAGS}" STREQUAL "") aom_pop_var(CMAKE_EXE_LINKER_FLAGS) - endif () + endif() append_flag(AOM_C_FLAGS "${c_flag}") - if (update_c_flags) - foreach (config ${AOM_C_CONFIGS}) + if(update_c_flags) + foreach(config ${AOM_C_CONFIGS}) set(${config} "${${config}} ${c_flag}" CACHE STRING "" FORCE) - endforeach () - endif () -endfunction () + endforeach() + endif() +endfunction() # Checks CXX compiler for support of $cxx_flag and terminates generation when # support is not present. -function (require_cxx_flag cxx_flag update_cxx_flags) - if (DEBUG_CMAKE_DISABLE_COMPILER_TESTS) +function(require_cxx_flag cxx_flag update_cxx_flags) + if(DEBUG_CMAKE_DISABLE_COMPILER_TESTS) return() - endif () + endif() is_flag_present(AOM_CXX_FLAGS "${cxx_flag}" flag_ok) - if (${flag_ok}) - return () - endif () + if(${flag_ok}) + return() + endif() - if (NOT "${AOM_EXE_LINKER_FLAGS}" STREQUAL "") + if(NOT "${AOM_EXE_LINKER_FLAGS}" STREQUAL "") aom_push_var(CMAKE_EXE_LINKER_FLAGS "${AOM_EXE_LINKER_FLAGS}") - endif () + endif() unset(HAVE_CXX_FLAG CACHE) message("Checking C compiler flag support for: " ${cxx_flag}) check_cxx_compiler_flag("${cxx_flag}" HAVE_CXX_FLAG) - if (NOT HAVE_CXX_FLAG) + if(NOT HAVE_CXX_FLAG) message(FATAL_ERROR - "${PROJECT_NAME} requires support for C flag: ${cxx_flag}.") - endif () + "${PROJECT_NAME} requires support for C flag: ${cxx_flag}.") + endif() - if (NOT "${AOM_EXE_LINKER_FLAGS}" STREQUAL "") + if(NOT "${AOM_EXE_LINKER_FLAGS}" STREQUAL "") aom_pop_var(CMAKE_EXE_LINKER_FLAGS) - endif () + endif() append_flag(AOM_CXX_FLAGS "${cxx_flag}") - if (update_cxx_flags) - foreach (config ${AOM_CXX_CONFIGS}) + if(update_cxx_flags) + foreach(config ${AOM_CXX_CONFIGS}) set(${config} "${${config}} ${cxx_flag}" CACHE STRING "" FORCE) - endforeach () - endif () -endfunction () + endforeach() + endif() +endfunction() # Checks for support of $flag by both the C and CXX compilers. Terminates # generation when support is not present in both compilers. -function (require_compiler_flag flag update_cmake_flags) +function(require_compiler_flag flag update_cmake_flags) require_c_flag(${flag} ${update_cmake_flags}) require_cxx_flag(${flag} ${update_cmake_flags}) -endfunction () +endfunction() # Checks only non-MSVC targets for support of $c_flag and terminates generation # when support is not present. -function (require_c_flag_nomsvc c_flag update_c_flags) - if (NOT MSVC) +function(require_c_flag_nomsvc c_flag update_c_flags) + if(NOT MSVC) require_c_flag(${c_flag} ${update_c_flags}) - endif () -endfunction () + endif() +endfunction() # Checks only non-MSVC targets for support of $cxx_flag and terminates # generation when support is not present. -function (require_cxx_flag_nomsvc cxx_flag update_cxx_flags) - if (NOT MSVC) +function(require_cxx_flag_nomsvc cxx_flag update_cxx_flags) + if(NOT MSVC) require_cxx_flag(${cxx_flag} ${update_cxx_flags}) - endif () -endfunction () + endif() +endfunction() # Checks only non-MSVC targets for support of $flag by both the C and CXX # compilers. Terminates generation when support is not present in both # compilers. -function (require_compiler_flag_nomsvc flag update_cmake_flags) +function(require_compiler_flag_nomsvc flag update_cmake_flags) require_c_flag_nomsvc(${flag} ${update_cmake_flags}) require_cxx_flag_nomsvc(${flag} ${update_cmake_flags}) -endfunction () +endfunction() # Adds $preproc_def to C compiler command line (as -D$preproc_def) if not # already present. -function (add_c_preproc_definition preproc_def) +function(add_c_preproc_definition preproc_def) set(preproc_def "-D${preproc_def}") is_flag_present(AOM_C_FLAGS "${preproc_def}" flag_cached) - if (${flag_cached}) - return () - endif () + if(${flag_cached}) + return() + endif() - foreach (config ${AOM_C_CONFIGS}) + foreach(config ${AOM_C_CONFIGS}) set(${config} "${${config}} ${preproc_def}" CACHE STRING "" FORCE) - endforeach () -endfunction () + endforeach() +endfunction() # Adds $preproc_def to CXX compiler command line (as -D$preproc_def) if not # already present. -function (add_cxx_preproc_definition preproc_def) +function(add_cxx_preproc_definition preproc_def) set(preproc_def "-D${preproc_def}") is_flag_present(AOM_CXX_FLAGS "${preproc_def}" flag_cached) - if (${flag_cached}) - return () - endif () + if(${flag_cached}) + return() + endif() - foreach (config ${AOM_CXX_CONFIGS}) + foreach(config ${AOM_CXX_CONFIGS}) set(${config} "${${config}} ${preproc_def}" CACHE STRING "" FORCE) - endforeach () -endfunction () + endforeach() +endfunction() # Adds $preproc_def to C and CXX compiler command line (as -D$preproc_def) if # not already present. -function (add_preproc_definition preproc_def) +function(add_preproc_definition preproc_def) add_c_preproc_definition(${preproc_def}) add_cxx_preproc_definition(${preproc_def}) -endfunction () +endfunction() # Adds $flag to assembler command line. -function (append_as_flag flag) +function(append_as_flag flag) is_flag_present(AOM_AS_FLAGS "${flag}" flag_cached) - if (${flag_cached}) - return () - endif () + if(${flag_cached}) + return() + endif() append_flag(AOM_AS_FLAGS "${flag}") -endfunction () +endfunction() # Adds $flag to the C compiler command line. -function (append_c_flag flag) +function(append_c_flag flag) is_flag_present(AOM_C_FLAGS "${flag}" flag_cached) - if (${flag_cached}) - return () - endif () + if(${flag_cached}) + return() + endif() - foreach (config ${AOM_C_CONFIGS}) + foreach(config ${AOM_C_CONFIGS}) append_flag(${config} "${flag}") - endforeach () -endfunction () + endforeach() +endfunction() # Adds $flag to the CXX compiler command line. -function (append_cxx_flag flag) +function(append_cxx_flag flag) is_flag_present(AOM_CXX_FLAGS "${flag}" flag_cached) - if (${flag_cached}) - return () - endif () + if(${flag_cached}) + return() + endif() - foreach (config ${AOM_CXX_CONFIGS}) + foreach(config ${AOM_CXX_CONFIGS}) append_flag(${config} "${flag}") - endforeach () -endfunction () + endforeach() +endfunction() # Adds $flag to the C and CXX compiler command lines. -function (append_compiler_flag flag) +function(append_compiler_flag flag) append_c_flag(${flag}) append_cxx_flag(${flag}) -endfunction () +endfunction() # Adds $flag to the executable linker command line when not present. -function (append_exe_linker_flag flag) +function(append_exe_linker_flag flag) is_flag_present(AOM_EXE_LINKER_FLAGS "${flag}" flag_cached) - if (${flag_cached}) + if(${flag_cached}) return() - endif () + endif() append_flag(AOM_EXE_LINKER_FLAGS "${flag}") - foreach (config ${AOM_EXE_LINKER_CONFIGS}) + foreach(config ${AOM_EXE_LINKER_CONFIGS}) append_flag(${config} "${flag}") - endforeach () -endfunction () + endforeach() +endfunction() # Adds $flag to the link flags for $target. -function (append_link_flag_to_target target flag) +function(append_link_flag_to_target target flag) unset(target_link_flags) get_target_property(target_link_flags ${target} LINK_FLAGS) - if (target_link_flags) + if(target_link_flags) is_flag_present(target_link_flags "${flag}" flag_found) - if (${flag_found}) + if(${flag_found}) return() - endif () - set(target_link_flags "${target_link_flags} ${flags}") - else () - set(target_link_flags "${flags}") - endif () + endif() + set(target_link_flags "${target_link_flags} ${flag}") + else() + set(target_link_flags "${flag}") + endif() set_target_properties(${target} PROPERTIES LINK_FLAGS ${target_link_flags}) -endfunction () +endfunction() # Adds $flag to executable linker flags, and makes sure C/CXX builds still work. -function (require_linker_flag flag) - if (DEBUG_CMAKE_DISABLE_COMPILER_TESTS) +function(require_linker_flag flag) + if(DEBUG_CMAKE_DISABLE_COMPILER_TESTS) return() - endif () + endif() append_exe_linker_flag(${flag}) @@ -331,42 +332,42 @@ function (require_linker_flag flag) unset(cxx_passed) aom_check_cxx_compiles("LINKER_FLAG_CXX_TEST(${flag})" "" cxx_passed) - if (NOT c_passed OR NOT cxx_passed) + if(NOT c_passed OR NOT cxx_passed) message(FATAL_ERROR "Linker flag test for ${flag} failed.") - endif () -endfunction () + endif() +endfunction() # Appends flags in $AOM_EXTRA_<TYPE>_FLAGS variables to the flags used at build # time. -function (set_user_flags) +function(set_user_flags) + # Linker flags are handled first because some C/CXX flags require that a # linker flag is present at link time. - if (AOM_EXTRA_EXE_LINKER_FLAGS) + if(AOM_EXTRA_EXE_LINKER_FLAGS) is_flag_present(AOM_EXE_LINKER_FLAGS "${AOM_EXTRA_EXE_LINKER_FLAGS}" extra_present) - if (NOT ${extra_present}) + if(NOT ${extra_present}) require_linker_flag("${AOM_EXTRA_EXE_LINKER_FLAGS}") - endif () - endif () - if (AOM_EXTRA_AS_FLAGS) + endif() + endif() + if(AOM_EXTRA_AS_FLAGS) + # TODO(tomfinegan): assembler flag testing would be a good thing to have. is_flag_present(AOM_AS_FLAGS "${AOM_EXTRA_AS_FLAGS}" extra_present) - if (NOT ${extra_present}) + if(NOT ${extra_present}) append_flag(AOM_AS_FLAGS "${AOM_EXTRA_AS_FLAGS}") - endif () - endif () - if (AOM_EXTRA_C_FLAGS) + endif() + endif() + if(AOM_EXTRA_C_FLAGS) is_flag_present(AOM_C_FLAGS "${AOM_EXTRA_C_FLAGS}" extra_present) - if (NOT ${extra_present}) + if(NOT ${extra_present}) require_c_flag("${AOM_EXTRA_C_FLAGS}" YES) - endif () - endif () - if (AOM_EXTRA_CXX_FLAGS) + endif() + endif() + if(AOM_EXTRA_CXX_FLAGS) is_flag_present(AOM_CXX_FLAGS "${AOM_EXTRA_CXX_FLAGS}" extra_present) - if (NOT ${extra_present}) + if(NOT ${extra_present}) require_cxx_flag("${AOM_EXTRA_CXX_FLAGS}" YES) - endif () - endif () -endfunction () - -endif () # AOM_BUILD_CMAKE_COMPILER_FLAGS_CMAKE_ + endif() + endif() +endfunction() |