SDL/cmake/macros.cmake

165 lines
4.7 KiB
CMake

macro(add_to_alloptions _NEWNAME)
list(APPEND ALLOPTIONS ${_NEWNAME})
string(LENGTH ${_NEWNAME} _SLEN)
if(${LONGESTOPTIONNAME} LESS ${_SLEN})
set(LONGESTOPTIONNAME ${_SLEN})
endif()
endmacro()
macro(set_option _NAME _DESC)
add_to_alloptions(${_NAME})
if(${ARGC} EQUAL 3)
set(_DEFLT ${ARGV2})
else()
set(_DEFLT OFF)
endif()
option(${_NAME} ${_DESC} ${_DEFLT})
endmacro()
macro(dep_option _NAME _DESC _DEFLT _DEPTEST _FAILDFLT)
add_to_alloptions("${_NAME}")
cmake_dependent_option("${_NAME}" "${_DESC}" "${_DEFLT}" "${_DEPTEST}" "${_FAILDFLT}")
endmacro()
macro(option_string _NAME _DESC _VALUE)
add_to_alloptions(${_NAME})
set(${_NAME} ${_VALUE} CACHE STRING "${_DESC}")
set(HAVE_${_NAME} ${_VALUE})
ENDMACRO()
# Message Output
macro(message_warn _TEXT)
message(WARNING "${_TEXT}")
endmacro()
macro(message_error _TEXT)
message(FATAL_ERROR "*** ERROR: ${_TEXT}")
endmacro()
macro(message_bool_option _NAME _VALUE)
set(_PAD "\t")
if(${ARGC} EQUAL 3)
set(_PAD ${ARGV2})
endif()
if(${_VALUE})
message(STATUS " ${_NAME}:${_PAD}ON")
else()
message(STATUS " ${_NAME}:${_PAD}OFF")
endif()
endmacro()
macro(message_tested_option _NAME)
set(_REQVALUE ${${_NAME}})
set(_PAD " ")
if(${ARGC} EQUAL 2)
set(_PAD ${ARGV1})
endif()
string(SUBSTRING "${_NAME}" 0 4 _NAMESTART)
if(_NAMESTART STREQUAL "SDL_")
string(SUBSTRING "${_NAME}" 4 -1 _STRIPPEDNAME)
else()
set(_STRIPPEDNAME "${_NAME}")
endif()
if(NOT HAVE_${_STRIPPEDNAME})
set(HAVE_${_STRIPPEDNAME} OFF)
elseif("${HAVE_${_STRIPPEDNAME}}" MATCHES "1|TRUE|YES|Y")
set(HAVE_${_STRIPPEDNAME} ON)
endif()
message(STATUS " ${_NAME}${_PAD}(Wanted: ${_REQVALUE}): ${HAVE_${_STRIPPEDNAME}}")
endmacro()
function(listtostr LIST OUTPUT)
if(${ARGC} EQUAL 3)
# prefix for each element
set(LPREFIX ${ARGV2})
else()
set(LPREFIX "")
endif()
# Do not use string(REPLACE ";" " ") here to avoid messing up list entries
set(res)
foreach(ITEM ${${LIST}})
string(SUBSTRING "${ITEM}" 0 6 start)
if(start STREQUAL "SHELL:")
string(SUBSTRING "${ITEM}" 6 -1 ITEM)
endif()
if(ITEM)
set(res "${res} ${LPREFIX}${ITEM}")
endif()
endforeach()
string(STRIP "${res}" res)
set(${OUTPUT} "${res}" PARENT_SCOPE)
endfunction()
function(find_stringlength_longest_item inList outLength)
set(maxLength 0)
foreach(item IN LISTS ${inList})
string(LENGTH "${item}" slen)
if(slen GREATER maxLength)
set(maxLength ${slen})
endif()
endforeach()
set("${outLength}" ${maxLength} PARENT_SCOPE)
endfunction()
function(message_dictlist inList)
find_stringlength_longest_item(${inList} maxLength)
foreach(name IN LISTS ${inList})
# Get the padding
string(LENGTH ${name} nameLength)
math(EXPR padLength "(${maxLength} + 1) - ${nameLength}")
string(RANDOM LENGTH ${padLength} ALPHABET " " padding)
message_tested_option(${name} ${padding})
endforeach()
endfunction()
if(CMAKE_VERSION VERSION_LESS 3.16.0 OR SDL3_SUBPROJECT)
# - CMake versions <3.16 do not support the OBJC language
# - When SDL is built as a subproject and when the main project does not enable OBJC,
# CMake fails due to missing internal CMake variables (CMAKE_OBJC_COMPILE_OBJECT)
# (reproduced with CMake 3.24.2)
macro(CHECK_OBJC_SOURCE_COMPILES SOURCE VAR)
set(PREV_REQUIRED_DEFS "${CMAKE_REQUIRED_DEFINITIONS}")
set(CMAKE_REQUIRED_DEFINITIONS "-x objective-c ${PREV_REQUIRED_DEFS}")
CHECK_C_SOURCE_COMPILES("${SOURCE}" ${VAR})
set(CMAKE_REQUIRED_DEFINITIONS "${PREV_REQUIRED_DEFS}")
endmacro()
else()
include(CheckOBJCSourceCompiles)
if (APPLE)
enable_language(OBJC)
endif()
endif()
if(CMAKE_VERSION VERSION_LESS 3.18)
function(check_linker_flag LANG FLAG VAR)
cmake_push_check_state()
list(APPEND CMAKE_REQUIRED_LINK_OPTIONS ${FLAG} )
if(LANG STREQUAL "C")
include(CheckCSourceCompiles)
check_c_source_compiles("int main(int argc,char*argv[]){(void)argc;(void)argv;return 0;}" ${VAR} FAIL_REGEX "warning")
elseif(LANG STREQUAL "CXX")
include(CheckCXXSourceCompiles)
check_cxx_source_compiles("int main(int argc,char*argv[]){(void)argc;(void)argv;return 0;}" ${VAR} FAIL_REGEX "warning")
else()
message(FATAL_ERROR "Unsupported language: ${LANG}")
endif()
cmake_pop_check_state()
endfunction()
else()
cmake_policy(SET CMP0057 NEW) # Support new if() IN_LIST operator. (used inside check_linker_flag, used in CMake 3.18)
include(CheckLinkerFlag)
endif()
if(APPLE)
check_language(OBJC)
if(NOT CMAKE_OBJC_COMPILER)
message(WARNING "Cannot find working OBJC compiler.")
endif()
endif()
if(CMAKE_VERSION VERSION_LESS 3.13.0)
macro(target_link_directories _TARGET _SCOPE)
link_directories(${ARGN})
endmacro()
endif()