diff options
Diffstat (limited to 'third_party/aom/build/cmake/util.cmake')
| -rw-r--r-- | third_party/aom/build/cmake/util.cmake | 56 |
1 files changed, 55 insertions, 1 deletions
diff --git a/third_party/aom/build/cmake/util.cmake b/third_party/aom/build/cmake/util.cmake index 62841a63b..d6c432229 100644 --- a/third_party/aom/build/cmake/util.cmake +++ b/third_party/aom/build/cmake/util.cmake @@ -11,9 +11,12 @@ if (NOT AOM_BUILD_CMAKE_UTIL_CMAKE_) set(AOM_BUILD_CMAKE_UTIL_CMAKE_ 1) +# Creates dummy source file in $AOM_CONFIG_DIR named $basename.$extension and +# returns the full path to the dummy source file via the $out_file_path +# parameter. function (create_dummy_source_file basename extension out_file_path) set(dummy_source_file "${AOM_CONFIG_DIR}/${basename}.${extension}") - file(WRITE "${dummy_source_file}" + file(WRITE "${dummy_source_file}" "// Generated file. DO NOT EDIT!\n" "// ${target_name} needs a ${extension} file to force link language, \n" "// or to silence a harmless CMake warning: Ignore me.\n" @@ -21,10 +24,61 @@ function (create_dummy_source_file basename extension out_file_path) set(${out_file_path} ${dummy_source_file} PARENT_SCOPE) endfunction () +# Convenience function for adding a dummy source file to $target_name using +# $extension as the file extension. Wraps create_dummy_source_file(). function (add_dummy_source_file_to_target target_name extension) create_dummy_source_file("${target_name}" "${extension}" "dummy_source_file") target_sources(${target_name} PRIVATE ${dummy_source_file}) endfunction () +# Sets the value of the variable referenced by $feature to $value, and reports +# the change to the user via call to message(WARNING ...). $cause is expected to +# be a configuration variable that conflicts with $feature in some way. +function (change_config_and_warn feature value cause) + set(${feature} ${value} PARENT_SCOPE) + if (${value} EQUAL 1) + set(verb "Enabled") + set(reason "required for") + else () + set(verb "Disabled") + set(reason "incompatible with") + endif () + set(warning_message "${verb} ${feature}, ${reason} ${cause}.") + message(WARNING "--- ${warning_message}") +endfunction () + +# Extracts the version string from $version_file and returns it to the user via +# $version_string_out_var. To achieve this VERSION_STRING_NOSP is located in +# $version_file and then everything but the string literal assigned to the +# variable is removed. Quotes and the leading 'v' are stripped from the +# returned string. +function (extract_version_string version_file version_string_out_var) + file(STRINGS "${version_file}" aom_version REGEX "VERSION_STRING_NOSP") + string(REPLACE "#define VERSION_STRING_NOSP " "" aom_version + "${aom_version}") + string(REPLACE "\"" "" aom_version "${aom_version}") + string(REPLACE " " "" aom_version "${aom_version}") + string(FIND "${aom_version}" "v" v_pos) + if (${v_pos} EQUAL 0) + string(SUBSTRING "${aom_version}" 1 -1 aom_version) + endif () + set("${version_string_out_var}" "${aom_version}" PARENT_SCOPE) +endfunction () + +# Sets CMake compiler launcher to $launcher_name when $launcher_name is found in +# $PATH. Warns user about ignoring build flag $launcher_flag when $launcher_name +# is not found in $PATH. +function (set_compiler_launcher launcher_flag launcher_name) + find_program(launcher_path "${launcher_name}") + if (launcher_path) + set(CMAKE_C_COMPILER_LAUNCHER "${launcher_path}" PARENT_SCOPE) + set(CMAKE_CXX_COMPILER_LAUNCHER "${launcher_path}" PARENT_SCOPE) + message("--- Using ${launcher_name} as compiler launcher.") + else () + message(WARNING + "--- Cannot find ${launcher_name}, ${launcher_flag} ignored.") + endif () +endfunction () + endif() # AOM_BUILD_CMAKE_UTIL_CMAKE_ |