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opencv/cmake/OpenCVUtils.cmake

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CMake
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# Search packages for host system instead of packages for target system
# in case of cross compilation thess macro should be defined by toolchain file
if(NOT COMMAND find_host_package)
macro(find_host_package)
find_package(${ARGN})
endmacro()
endif()
if(NOT COMMAND find_host_program)
macro(find_host_program)
find_program(${ARGN})
endmacro()
endif()
# adds include directories in such way that directories from the OpenCV source tree go first
function(ocv_include_directories)
set(__add_before "")
foreach(dir ${ARGN})
get_filename_component(__abs_dir "${dir}" ABSOLUTE)
if("${__abs_dir}" MATCHES "^${OpenCV_SOURCE_DIR}" OR "${__abs_dir}" MATCHES "^${OpenCV_BINARY_DIR}")
list(APPEND __add_before "${dir}")
else()
include_directories(AFTER "${dir}")
endif()
endforeach()
include_directories(BEFORE ${__add_before})
endfunction()
# clears all passed variables
macro(ocv_clear_vars)
foreach(_var ${ARGN})
unset(${_var} CACHE)
endforeach()
endmacro()
include(CheckCXXCompilerFlag)
include(CheckCCompilerFlag)
macro(ocv_check_flag_support lang flag varname)
if("_${lang}_" MATCHES "_CXX_")
set(_lang CXX)
elseif("_${lang}_" MATCHES ".*_C_.*")
set(_lang C)
else()
set(_lang ${lang})
endif()
string(TOUPPER "${flag}" ${varname})
string(REGEX REPLACE "^(/|-)" "HAVE_${_lang}_" ${varname} "${${varname}}")
string(REPLACE "-" "_" ${varname} "${${varname}}")
if(_lang STREQUAL "CXX")
CHECK_CXX_COMPILER_FLAG(${flag} ${${varname}})
elseif(_lang STREQUAL "C")
CHECK_C_COMPILER_FLAG("${flag}" ${${varname}})
else()
set(${varname} FALSE)
endif()
endmacro()
# turns off warnings
macro(ocv_warnings_disable)
if(NOT ENABLE_NOISY_WARNINGS)
set(_flag_vars "")
set(_msvc_warnings "")
set(_gxx_warnings "")
foreach(arg ${ARGN})
if(arg MATCHES "^CMAKE_")
list(APPEND _flag_vars ${arg})
elseif(arg MATCHES "^/wd")
list(APPEND _msvc_warnings ${arg})
elseif(arg MATCHES "^-W")
list(APPEND _gxx_warnings ${arg})
endif()
endforeach()
if(MSVC AND _msvc_warnings AND _flag_vars)
foreach(var ${_flag_vars})
foreach(warning ${_msvc_warnings})
set(${var} "${${var}} ${warning}")
endforeach()
endforeach()
elseif(CV_COMPILER_IS_GNU AND _gxx_warnings AND _flag_vars)
foreach(var ${_flag_vars})
foreach(warning ${_gxx_warnings})
if(NOT warning MATCHES "^-Wno-")
string(REPLACE "${warning}" "" ${var} "${${var}}")
string(REPLACE "-W" "-Wno-" warning "${warning}")
endif()
ocv_check_flag_support(${var} "${warning}" _varname)
if(${_varname})
set(${var} "${${var}} ${warning}")
endif()
endforeach()
endforeach()
endif()
unset(_flag_vars)
unset(_msvc_warnings)
unset(_gxx_warnings)
endif(NOT ENABLE_NOISY_WARNINGS)
endmacro()
# Provides an option that the user can optionally select.
# Can accept condition to control when option is available for user.
# Usage:
# option(<option_variable> "help string describing the option" <initial value or boolean expression> [IF <condition>])
macro(OCV_OPTION variable description value)
set(__value ${value})
set(__condition "")
set(__varname "__value")
foreach(arg ${ARGN})
if(arg STREQUAL "IF" OR arg STREQUAL "if")
set(__varname "__condition")
else()
list(APPEND ${__varname} ${arg})
endif()
endforeach()
unset(__varname)
if("${__condition}" STREQUAL "")
set(__condition 2 GREATER 1)
endif()
if(${__condition})
if("${__value}" MATCHES ";")
if(${__value})
option(${variable} "${description}" ON)
else()
option(${variable} "${description}" OFF)
endif()
elseif(DEFINED ${__value})
if(${__value})
option(${variable} "${description}" ON)
else()
option(${variable} "${description}" OFF)
endif()
else()
option(${variable} "${description}" ${__value})
endif()
else()
unset(${variable} CACHE)
endif()
unset(__condition)
unset(__value)
endmacro()
# Macros that checks if module have been installed.
# After it adds module to build and define
# constants passed as second arg
macro(CHECK_MODULE module_name define)
set(${define} 0)
if(PKG_CONFIG_FOUND)
set(ALIAS ALIASOF_${module_name})
set(ALIAS_FOUND ${ALIAS}_FOUND)
set(ALIAS_INCLUDE_DIRS ${ALIAS}_INCLUDE_DIRS)
set(ALIAS_LIBRARY_DIRS ${ALIAS}_LIBRARY_DIRS)
set(ALIAS_LIBRARIES ${ALIAS}_LIBRARIES)
PKG_CHECK_MODULES(${ALIAS} ${module_name})
if(${ALIAS_FOUND})
set(${define} 1)
foreach(P "${ALIAS_INCLUDE_DIRS}")
if(${P})
list(APPEND HIGHGUI_INCLUDE_DIRS ${${P}})
endif()
endforeach()
foreach(P "${ALIAS_LIBRARY_DIRS}")
if(${P})
list(APPEND HIGHGUI_LIBRARY_DIRS ${${P}})
endif()
endforeach()
list(APPEND HIGHGUI_LIBRARIES ${${ALIAS_LIBRARIES}})
endif()
endif()
endmacro()
set(OPENCV_BUILD_INFO_FILE "${OpenCV_BINARY_DIR}/version_string.tmp")
file(REMOVE "${OPENCV_BUILD_INFO_FILE}")
function(ocv_output_status msg)
message(STATUS "${msg}")
string(REPLACE "\\" "\\\\" msg "${msg}")
string(REPLACE "\"" "\\\"" msg "${msg}")
file(APPEND "${OPENCV_BUILD_INFO_FILE}" "\"${msg}\\n\"\n")
endfunction()
macro(ocv_finalize_status)
if(NOT OPENCV_SKIP_STATUS_FINALIZATION)
if(TARGET opencv_core)
execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different "${OPENCV_BUILD_INFO_FILE}" "${opencv_core_BINARY_DIR}/version_string.inc" OUTPUT_QUIET)
endif()
endif()
endmacro()
# Status report function.
# Automatically align right column and selects text based on condition.
# Usage:
# status(<text>)
# status(<heading> <value1> [<value2> ...])
# status(<heading> <condition> THEN <text for TRUE> ELSE <text for FALSE> )
function(status text)
set(status_cond)
set(status_then)
set(status_else)
set(status_current_name "cond")
foreach(arg ${ARGN})
if(arg STREQUAL "THEN")
set(status_current_name "then")
elseif(arg STREQUAL "ELSE")
set(status_current_name "else")
else()
list(APPEND status_${status_current_name} ${arg})
endif()
endforeach()
if(DEFINED status_cond)
set(status_placeholder_length 32)
string(RANDOM LENGTH ${status_placeholder_length} ALPHABET " " status_placeholder)
string(LENGTH "${text}" status_text_length)
if(status_text_length LESS status_placeholder_length)
string(SUBSTRING "${text}${status_placeholder}" 0 ${status_placeholder_length} status_text)
elseif(DEFINED status_then OR DEFINED status_else)
ocv_output_status("${text}")
set(status_text "${status_placeholder}")
else()
set(status_text "${text}")
endif()
if(DEFINED status_then OR DEFINED status_else)
if(${status_cond})
string(REPLACE ";" " " status_then "${status_then}")
string(REGEX REPLACE "^[ \t]+" "" status_then "${status_then}")
ocv_output_status("${status_text} ${status_then}")
else()
string(REPLACE ";" " " status_else "${status_else}")
string(REGEX REPLACE "^[ \t]+" "" status_else "${status_else}")
ocv_output_status("${status_text} ${status_else}")
endif()
else()
string(REPLACE ";" " " status_cond "${status_cond}")
string(REGEX REPLACE "^[ \t]+" "" status_cond "${status_cond}")
ocv_output_status("${status_text} ${status_cond}")
endif()
else()
ocv_output_status("${text}")
endif()
endfunction()
# splits cmake libraries list of format "general;item1;debug;item2;release;item3" to two lists
macro(ocv_split_libs_list lst lstdbg lstopt)
set(${lstdbg} "")
set(${lstopt} "")
set(perv_keyword "")
foreach(word ${${lst}})
if(word STREQUAL "debug" OR word STREQUAL "optimized")
set(perv_keyword ${word})
elseif(word STREQUAL "general")
set(perv_keyword "")
elseif(perv_keyword STREQUAL "debug")
list(APPEND ${lstdbg} "${word}")
set(perv_keyword "")
elseif(perv_keyword STREQUAL "optimized")
list(APPEND ${lstopt} "${word}")
set(perv_keyword "")
else()
list(APPEND ${lstdbg} "${word}")
list(APPEND ${lstopt} "${word}")
set(perv_keyword "")
endif()
endforeach()
endmacro()
# remove all matching elements from the list
macro(ocv_list_filterout lst regex)
foreach(item ${${lst}})
if(item MATCHES "${regex}")
list(REMOVE_ITEM ${lst} "${item}")
endif()
endforeach()
endmacro()
# stable & safe duplicates removal macro
macro(ocv_list_unique __lst)
if(${__lst})
list(REMOVE_DUPLICATES ${__lst})
endif()
endmacro()
# safe list reversal macro
macro(ocv_list_reverse __lst)
if(${__lst})
list(REVERSE ${__lst})
endif()
endmacro()
# safe list sorting macro
macro(ocv_list_sort __lst)
if(${__lst})
list(SORT ${__lst})
endif()
endmacro()
# add prefix to each item in the list
macro(ocv_list_add_prefix LST PREFIX)
set(__tmp "")
foreach(item ${${LST}})
list(APPEND __tmp "${PREFIX}${item}")
endforeach()
set(${LST} ${__tmp})
unset(__tmp)
endmacro()
# add suffix to each item in the list
macro(ocv_list_add_suffix LST SUFFIX)
set(__tmp "")
foreach(item ${${LST}})
list(APPEND __tmp "${item}${SUFFIX}")
endforeach()
set(${LST} ${__tmp})
unset(__tmp)
endmacro()
# simple regex escaping routine (does not cover all cases!!!)
macro(ocv_regex_escape var regex)
string(REGEX REPLACE "([+.*^$])" "\\\\1" ${var} "${regex}")
endmacro()
# get absolute path with symlinks resolved
macro(ocv_get_real_path VAR PATHSTR)
if(CMAKE_VERSION VERSION_LESS 2.8)
get_filename_component(${VAR} "${PATHSTR}" ABSOLUTE)
else()
get_filename_component(${VAR} "${PATHSTR}" REALPATH)
endif()
endmacro()
# convert list of paths to full paths
macro(ocv_to_full_paths VAR)
if(${VAR})
set(__tmp "")
foreach(path ${${VAR}})
get_filename_component(${VAR} "${path}" ABSOLUTE)
list(APPEND __tmp "${${VAR}}")
endforeach()
set(${VAR} ${__tmp})
unset(__tmp)
endif()
endmacro()
# read set of version defines from the header file
macro(ocv_parse_header FILENAME FILE_VAR)
set(vars_regex "")
set(__parnet_scope OFF)
set(__add_cache OFF)
foreach(name ${ARGN})
if("${name}" STREQUAL "PARENT_SCOPE")
set(__parnet_scope ON)
elseif("${name}" STREQUAL "CACHE")
set(__add_cache ON)
elseif(vars_regex)
set(vars_regex "${vars_regex}|${name}")
else()
set(vars_regex "${name}")
endif()
endforeach()
if(EXISTS "${FILENAME}")
file(STRINGS "${FILENAME}" ${FILE_VAR} REGEX "#define[ \t]+(${vars_regex})[ \t]+[0-9]+" )
else()
unset(${FILE_VAR})
endif()
foreach(name ${ARGN})
if(NOT "${name}" STREQUAL "PARENT_SCOPE" AND NOT "${name}" STREQUAL "CACHE")
if(${FILE_VAR})
if(${FILE_VAR} MATCHES ".+[ \t]${name}[ \t]+([0-9]+).*")
string(REGEX REPLACE ".+[ \t]${name}[ \t]+([0-9]+).*" "\\1" ${name} "${${FILE_VAR}}")
else()
set(${name} "")
endif()
if(__add_cache)
set(${name} ${${name}} CACHE INTERNAL "${name} parsed from ${FILENAME}" FORCE)
elseif(__parnet_scope)
set(${name} "${${name}}" PARENT_SCOPE)
endif()
else()
unset(${name} CACHE)
endif()
endif()
endforeach()
endmacro()
# read single version define from the header file
macro(ocv_parse_header2 LIBNAME HDR_PATH VARNAME SCOPE)
set(${LIBNAME}_H "")
if(EXISTS "${HDR_PATH}")
file(STRINGS "${HDR_PATH}" ${LIBNAME}_H REGEX "^#define[ \t]+${VARNAME}[ \t]+\"[^\"]*\".*$" LIMIT_COUNT 1)
endif()
if(${LIBNAME}_H)
string(REGEX REPLACE "^.*[ \t]${VARNAME}[ \t]+\"([0-9]+).*$" "\\1" ${LIBNAME}_VERSION_MAJOR "${${LIBNAME}_H}")
string(REGEX REPLACE "^.*[ \t]${VARNAME}[ \t]+\"[0-9]+\\.([0-9]+).*$" "\\1" ${LIBNAME}_VERSION_MINOR "${${LIBNAME}_H}")
string(REGEX REPLACE "^.*[ \t]${VARNAME}[ \t]+\"[0-9]+\\.[0-9]+\\.([0-9]+).*$" "\\1" ${LIBNAME}_VERSION_PATCH "${${LIBNAME}_H}")
set(${LIBNAME}_VERSION_MAJOR ${${LIBNAME}_VERSION_MAJOR} ${SCOPE})
set(${LIBNAME}_VERSION_MINOR ${${LIBNAME}_VERSION_MINOR} ${SCOPE})
set(${LIBNAME}_VERSION_PATCH ${${LIBNAME}_VERSION_PATCH} ${SCOPE})
set(${LIBNAME}_VERSION_STRING "${${LIBNAME}_VERSION_MAJOR}.${${LIBNAME}_VERSION_MINOR}.${${LIBNAME}_VERSION_PATCH}" ${SCOPE})
# append a TWEAK version if it exists:
set(${LIBNAME}_VERSION_TWEAK "")
if("${${LIBNAME}_H}" MATCHES "^.*[ \t]${VARNAME}[ \t]+\"[0-9]+\\.[0-9]+\\.[0-9]+\\.([0-9]+).*$")
set(${LIBNAME}_VERSION_TWEAK "${CMAKE_MATCH_1}" ${SCOPE})
set(${LIBNAME}_VERSION_STRING "${${LIBNAME}_VERSION_STRING}.${${LIBNAME}_VERSION_TWEAK}" ${SCOPE})
endif()
else()
ocv_clear_vars(${LIBNAME}_VERSION_MAJOR
${LIBNAME}_VERSION_MAJOR
${LIBNAME}_VERSION_MINOR
${LIBNAME}_VERSION_PATCH
${LIBNAME}_VERSION_TWEAK
${LIBNAME}_VERSION_STRING)
endif()
endmacro()
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