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Import aom library

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This is the reference implementation for the Alliance for Open Media's av1 video code.

The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.
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trav90 2018-10-15 21:45:30 -05:00 • committed by Roy Tam
commit edc8d83307
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133
third_party/aom/build/cmake/compiler_tests.cmake vendored Normal file
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##
## 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 ()