Open Source Computer Vision Library https://opencv.org/
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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()
#added include directories in such way that directories from the OpenCV source tree go first
macro(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})
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()
# 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 ${status_placeholder_length} status_text)
elseif(DEFINED status_then OR DEFINED status_else)
message(STATUS "${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}")
message(STATUS "${status_text}" "${status_then}")
else()
string(REPLACE ";" " " status_else "${status_else}")
message(STATUS "${status_text}" "${status_else}")
endif()
else()
string(REPLACE ";" " " status_cond "${status_cond}")
message(STATUS "${status_text}" "${status_cond}")
endif()
else()
message(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()