diff options
Diffstat (limited to 'third_party/aom/build/cmake/compiler_tests.cmake')
| -rw-r--r-- | third_party/aom/build/cmake/compiler_tests.cmake | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/third_party/aom/build/cmake/compiler_tests.cmake b/third_party/aom/build/cmake/compiler_tests.cmake new file mode 100644 index 000000000..e763597a2 --- /dev/null +++ b/third_party/aom/build/cmake/compiler_tests.cmake @@ -0,0 +1,133 @@ +## +## 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. +## +include(CheckCSourceCompiles) +include(CheckCXXSourceCompiles) + +# The basic main() function used in all compile tests. +set(AOM_C_MAIN "\nint main(void) { return 0; }") +set(AOM_CXX_MAIN "\nint main() { return 0; }") + +# Strings containing the names of passed and failed tests. +set(AOM_C_PASSED_TESTS) +set(AOM_C_FAILED_TESTS) +set(AOM_CXX_PASSED_TESTS) +set(AOM_CXX_FAILED_TESTS) + +function(aom_push_var var new_value) + set(SAVED_${var} ${var} PARENT_SCOPE) + set(${var} ${new_value} PARENT_SCOPE) +endfunction () + +function(aom_pop_var var) + set(var ${SAVED_${var}} PARENT_SCOPE) + unset(SAVED_${var} PARENT_SCOPE) +endfunction () + +# Confirms $test_source compiles and stores $test_name in one of +# $AOM_C_PASSED_TESTS or $AOM_C_FAILED_TESTS depending on out come. When the +# test passes $result_var is set to 1. When it fails $result_var is unset. +# The test is not run if the test name is found in either of the passed or +# failed test variables. +function(aom_check_c_compiles test_name test_source result_var) + unset(C_TEST_PASSED CACHE) + unset(C_TEST_FAILED CACHE) + string(FIND "${AOM_C_PASSED_TESTS}" "${test_name}" C_TEST_PASSED) + string(FIND "${AOM_C_FAILED_TESTS}" "${test_name}" C_TEST_FAILED) + if (${C_TEST_PASSED} EQUAL -1 AND ${C_TEST_FAILED} EQUAL -1) + unset(C_TEST_COMPILED CACHE) + message("Running C compiler test: ${test_name}") + check_c_source_compiles("${test_source} ${AOM_C_MAIN}" C_TEST_COMPILED) + set(${result_var} ${C_TEST_COMPILED} PARENT_SCOPE) + + if (C_TEST_COMPILED) + set(AOM_C_PASSED_TESTS "${AOM_C_PASSED_TESTS} ${test_name}" CACHE STRING + "" FORCE) + else () + set(AOM_C_FAILED_TESTS "${AOM_C_FAILED_TESTS} ${test_name}" CACHE STRING + "" FORCE) + message("C Compiler test ${test_name} failed.") + endif () + elseif (NOT ${C_TEST_PASSED} EQUAL -1) + set(${result_var} 1 PARENT_SCOPE) + else () # ${C_TEST_FAILED} NOT EQUAL -1 + unset(${result_var} PARENT_SCOPE) + endif () +endfunction () + +# Confirms $test_source compiles and stores $test_name in one of +# $AOM_CXX_PASSED_TESTS or $AOM_CXX_FAILED_TESTS depending on out come. When the +# test passes $result_var is set to 1. When it fails $result_var is unset. +# The test is not run if the test name is found in either of the passed or +# failed test variables. +function(aom_check_cxx_compiles test_name test_source result_var) + unset(CXX_TEST_PASSED CACHE) + unset(CXX_TEST_FAILED CACHE) + string(FIND "${AOM_CXX_PASSED_TESTS}" "${test_name}" CXX_TEST_PASSED) + string(FIND "${AOM_CXX_FAILED_TESTS}" "${test_name}" CXX_TEST_FAILED) + if (${CXX_TEST_PASSED} EQUAL -1 AND ${CXX_TEST_FAILED} EQUAL -1) + unset(CXX_TEST_COMPILED CACHE) + message("Running CXX compiler test: ${test_name}") + check_cxx_source_compiles("${test_source} ${AOM_CXX_MAIN}" + CXX_TEST_COMPILED) + set(${result_var} ${CXX_TEST_COMPILED} PARENT_SCOPE) + + if (CXX_TEST_COMPILED) + set(AOM_CXX_PASSED_TESTS "${AOM_CXX_PASSED_TESTS} ${test_name}" CACHE + STRING "" FORCE) + else () + set(AOM_CXX_FAILED_TESTS "${AOM_CXX_FAILED_TESTS} ${test_name}" CACHE + STRING "" FORCE) + message("CXX Compiler test ${test_name} failed.") + endif () + elseif (NOT ${CXX_TEST_PASSED} EQUAL -1) + set(${result_var} 1 PARENT_SCOPE) + else () # ${CXX_TEST_FAILED} NOT EQUAL -1 + unset(${result_var} PARENT_SCOPE) + endif () +endfunction () + +# Convenience function that confirms $test_source compiles as C and C++. +# $result_var is set to 1 when both tests are successful, and 0 when one or both +# tests fail. +# Note: This function is intended to be used to write to result variables that are +# expanded via configure_file(). $result_var is set to 1 or 0 to allow direct +# usage of the value in generated source files. +function(aom_check_source_compiles test_name test_source result_var) + unset(C_PASSED) + unset(CXX_PASSED) + aom_check_c_compiles(${test_name} ${test_source} C_PASSED) + aom_check_cxx_compiles(${test_name} ${test_source} CXX_PASSED) + if (C_PASSED AND CXX_PASSED) + set(${result_var} 1 PARENT_SCOPE) + else () + set(${result_var} 0 PARENT_SCOPE) + endif () +endfunction () + +# When inline support is detected for the current compiler the supported +# inlining keyword is written to $result in caller scope. +function (aom_get_inline result) + aom_check_source_compiles("inline_check_1" + "static inline void function(void) {}" + HAVE_INLINE_1) + if (HAVE_INLINE_1 EQUAL 1) + set(${result} "inline" PARENT_SCOPE) + return() + endif () + + # Check __inline. + aom_check_source_compiles("inline_check_2" + "static __inline void function(void) {}" + HAVE_INLINE_2) + if (HAVE_INLINE_2 EQUAL 1) + set(${result} "__inline" PARENT_SCOPE) + endif () +endfunction () |