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# Copyright 2019 The libgav1 Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
if(LIBGAV1_CMAKE_LIBGAV1_HELPERS_CMAKE_)
return()
endif() # LIBGAV1_CMAKE_LIBGAV1_HELPERS_CMAKE_
set(LIBGAV1_CMAKE_LIBGAV1_HELPERS_CMAKE_ 1)
# Kills build generation using message(FATAL_ERROR) and outputs all data passed
# to the console via use of $ARGN.
macro(libgav1_die)
message(FATAL_ERROR ${ARGN})
endmacro()
# Converts semi-colon delimited list variable(s) to string. Output is written to
# variable supplied via the DEST parameter. Input is from an expanded variable
# referenced by SOURCE and/or variable(s) referenced by SOURCE_VARS.
macro(libgav1_set_and_stringify)
set(optional_args)
set(single_value_args DEST SOURCE_VAR)
set(multi_value_args SOURCE SOURCE_VARS)
cmake_parse_arguments(sas "${optional_args}" "${single_value_args}"
"${multi_value_args}" ${ARGN})
if(NOT sas_DEST OR NOT (sas_SOURCE OR sas_SOURCE_VARS))
libgav1_die("libgav1_set_and_stringify: DEST and at least one of SOURCE "
"SOURCE_VARS required.")
endif()
unset(${sas_DEST})
if(sas_SOURCE)
# $sas_SOURCE is one or more expanded variables, just copy the values to
# $sas_DEST.
set(${sas_DEST} "${sas_SOURCE}")
endif()
if(sas_SOURCE_VARS)
# $sas_SOURCE_VARS is one or more variable names. Each iteration expands a
# variable and appends it to $sas_DEST.
foreach(source_var ${sas_SOURCE_VARS})
set(${sas_DEST} "${${sas_DEST}} ${${source_var}}")
endforeach()
# Because $sas_DEST can be empty when entering this scope leading whitespace
# can be introduced to $sas_DEST on the first iteration of the above loop.
# Remove it:
string(STRIP "${${sas_DEST}}" ${sas_DEST})
endif()
# Lists in CMake are simply semicolon delimited strings, so stringification is
# just a find and replace of the semicolon.
string(REPLACE ";" " " ${sas_DEST} "${${sas_DEST}}")
if(LIBGAV1_VERBOSE GREATER 1)
message("libgav1_set_and_stringify: ${sas_DEST}=${${sas_DEST}}")
endif()
endmacro()
# Creates a dummy source file in $LIBGAV1_GENERATED_SOURCES_DIRECTORY and adds
# it to the specified target. Optionally adds its path to a list variable.
#
# libgav1_create_dummy_source_file(<TARGET <target> BASENAME <basename of file>>
# [LISTVAR <list variable>])
macro(libgav1_create_dummy_source_file)
set(optional_args)
set(single_value_args TARGET BASENAME LISTVAR)
set(multi_value_args)
cmake_parse_arguments(cdsf "${optional_args}" "${single_value_args}"
"${multi_value_args}" ${ARGN})
if(NOT cdsf_TARGET OR NOT cdsf_BASENAME)
libgav1_die(
"libgav1_create_dummy_source_file: TARGET and BASENAME required.")
endif()
if(NOT LIBGAV1_GENERATED_SOURCES_DIRECTORY)
set(LIBGAV1_GENERATED_SOURCES_DIRECTORY "${libgav1_build}/gen_src")
endif()
set(dummy_source_dir "${LIBGAV1_GENERATED_SOURCES_DIRECTORY}")
set(dummy_source_file
"${dummy_source_dir}/libgav1_${cdsf_TARGET}_${cdsf_BASENAME}.cc")
set(dummy_source_code
"// Generated file. DO NOT EDIT!\n"
"// C++ source file created for target ${cdsf_TARGET}. \n"
"void libgav1_${cdsf_TARGET}_${cdsf_BASENAME}_dummy_function(void);\n"
"void libgav1_${cdsf_TARGET}_${cdsf_BASENAME}_dummy_function(void) {}\n")
file(WRITE "${dummy_source_file}" "${dummy_source_code}")
target_sources(${cdsf_TARGET} PRIVATE ${dummy_source_file})
if(cdsf_LISTVAR)
list(APPEND ${cdsf_LISTVAR} "${dummy_source_file}")
endif()
endmacro()
# Loads the version components from $libgav1_source/gav1/version.h and sets the
# corresponding CMake variables:
# - LIBGAV1_MAJOR_VERSION
# - LIBGAV1_MINOR_VERSION
# - LIBGAV1_PATCH_VERSION
# - LIBGAV1_VERSION, which is:
# - $LIBGAV1_MAJOR_VERSION.$LIBGAV1_MINOR_VERSION.$LIBGAV1_PATCH_VERSION
macro(libgav1_load_version_info)
file(STRINGS "${libgav1_source}/gav1/version.h" version_file_strings)
foreach(str ${version_file_strings})
if(str MATCHES "#define LIBGAV1_")
if(str MATCHES "#define LIBGAV1_MAJOR_VERSION ")
string(REPLACE "#define LIBGAV1_MAJOR_VERSION " "" LIBGAV1_MAJOR_VERSION
"${str}")
elseif(str MATCHES "#define LIBGAV1_MINOR_VERSION ")
string(REPLACE "#define LIBGAV1_MINOR_VERSION " "" LIBGAV1_MINOR_VERSION
"${str}")
elseif(str MATCHES "#define LIBGAV1_PATCH_VERSION ")
string(REPLACE "#define LIBGAV1_PATCH_VERSION " "" LIBGAV1_PATCH_VERSION
"${str}")
endif()
endif()
endforeach()
set(LIBGAV1_VERSION "${LIBGAV1_MAJOR_VERSION}.${LIBGAV1_MINOR_VERSION}")
set(LIBGAV1_VERSION "${LIBGAV1_VERSION}.${LIBGAV1_PATCH_VERSION}")
endmacro()
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