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# Version 1.0 (2013-04-12)
# Public Domain, originally written by Lasse Karkkainen <tronic@zi.fi>
# Published at http://www.cmake.org/Wiki/CMake:How_To_Find_Libraries
# If you improve the script, please modify the forementioned wiki page because
# I no longer maintain my scripts (hosted as static files at zi.fi). Feel free
# to remove this entire header if you use real version control instead.
# Changelog:
# 2013-04-12 Added version number (1.0) and this header, no other changes
# 2009-10-08 Originally published
# Works the same as find_package, but forwards the "REQUIRED" and "QUIET" arguments
# used for the current package. For this to work, the first parameter must be the
# prefix of the current package, then the prefix of the new package etc, which are
# passed to find_package.
macro (libfind_package PREFIX)
set (LIBFIND_PACKAGE_ARGS ${ARGN})
if (${PREFIX}_FIND_QUIETLY)
set (LIBFIND_PACKAGE_ARGS ${LIBFIND_PACKAGE_ARGS} QUIET)
endif (${PREFIX}_FIND_QUIETLY)
if (${PREFIX}_FIND_REQUIRED)
set (LIBFIND_PACKAGE_ARGS ${LIBFIND_PACKAGE_ARGS} REQUIRED)
endif (${PREFIX}_FIND_REQUIRED)
find_package(${LIBFIND_PACKAGE_ARGS})
endmacro (libfind_package)
# CMake developers made the UsePkgConfig system deprecated in the same release (2.6)
# where they added pkg_check_modules. Consequently I need to support both in my scripts
# to avoid those deprecated warnings. Here's a helper that does just that.
# Works identically to pkg_check_modules, except that no checks are needed prior to use.
macro (libfind_pkg_check_modules PREFIX PKGNAME)
if (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
include(UsePkgConfig)
pkgconfig(${PKGNAME} ${PREFIX}_INCLUDE_DIRS ${PREFIX}_LIBRARY_DIRS ${PREFIX}_LDFLAGS ${PREFIX}_CFLAGS)
else (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
find_package(PkgConfig)
if (PKG_CONFIG_FOUND)
pkg_check_modules(${PREFIX} ${PKGNAME})
endif (PKG_CONFIG_FOUND)
endif (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
endmacro (libfind_pkg_check_modules)
# This macro searchs the _lib_list list for _lib, and, if found, adds any
# missing dependencies in the _deps list. Also, the ${PREFIX}_FIND_REQUIRED_${_dep}
# variable is set to true if the ${PREFIX}_FIND_REQUIRED_${_lib} is true
macro(libfind_add_dep PREFIX _lib_list _lib _deps)
list(FIND ${_lib_list} ${_lib} _lib_find)
if(NOT _lib_find EQUAL -1)
foreach(_dep ${_deps})
# Add missing dependencies to the list.
list(FIND ${_lib_list} ${_dep} _dep_find)
if(_dep_find EQUAL -1)
list(APPEND ${_lib_list} ${_dep})
endif()
# Set the find required flag for the dependency
if(${PREFIX}_FIND_REQUIRED_${_lib})
set(${PREFIX}_FIND_REQUIRED_${_dep} TRUE)
else()
set(${PREFIX}_FIND_REQUIRED_${_dep} FALSE)
endif()
endforeach()
endif()
endmacro()
# Do the final processing once the paths have been detected.
# If include dirs are needed, ${PREFIX}_PROCESS_INCLUDES should be set to contain
# all the variables, each of which contain one include directory.
# Ditto for ${PREFIX}_PROCESS_LIBS and library files.
# Will set ${PREFIX}_FOUND, ${PREFIX}_INCLUDE_DIRS and ${PREFIX}_LIBRARIES.
# Also handles errors in case library detection was required, etc.
macro (libfind_process PREFIX)
# Skip processing if already processed during this run
if (NOT ${PREFIX}_FOUND)
# Start with the assumption that the library was found
set (${PREFIX}_FOUND TRUE)
# Process all includes and set _FOUND to false if any are missing
foreach (i ${${PREFIX}_PROCESS_INCLUDES})
if (${i})
set (${PREFIX}_INCLUDE_DIRS ${${PREFIX}_INCLUDE_DIRS} ${${i}})
mark_as_advanced(${i})
else (${i})
set (${PREFIX}_FOUND FALSE)
endif (${i})
endforeach (i)
# Process all libraries and set _FOUND to false if any are missing
foreach (i ${${PREFIX}_PROCESS_LIBS})
if (${i})
set (${PREFIX}_LIBRARIES ${${PREFIX}_LIBRARIES} ${${i}})
mark_as_advanced(${i})
else (${i})
set (${PREFIX}_FOUND FALSE)
endif (${i})
endforeach (i)
# Print message and/or exit on fatal error
if (${PREFIX}_FOUND)
if (NOT ${PREFIX}_FIND_QUIETLY)
message (STATUS "Found ${PREFIX} ${${PREFIX}_VERSION}")
endif (NOT ${PREFIX}_FIND_QUIETLY)
else (${PREFIX}_FOUND)
if (${PREFIX}_FIND_REQUIRED)
foreach (i ${${PREFIX}_PROCESS_INCLUDES} ${${PREFIX}_PROCESS_LIBS})
message("${i}=${${i}}")
endforeach (i)
message (FATAL_ERROR "Required library ${PREFIX} NOT FOUND.\nInstall the library (dev version) and try again. If the library is already installed, use ccmake to set the missing variables manually.")
endif (${PREFIX}_FIND_REQUIRED)
endif (${PREFIX}_FOUND)
endif (NOT ${PREFIX}_FOUND)
endmacro (libfind_process)
macro(libfind_header PREFIX _var _header)
set(${PREFIX}_INCLUDE_SEARCH_DIR)
if(${PREFIX}_ROOT_DIR)
set(${PREFIX}_INCLUDE_SEARCH_DIR "${${PREFIX}_ROOT_DIR}/include")
endif()
find_path(${_var} ${_header}
HINTS ${${PREFIX}_INCLUDE_DIR} ${${PREFIX}_INCLUDE_SEARCH_DIR}
NO_CMAKE_SYSTEM_PATH)
endmacro()
macro(libfind_library PREFIX _name)
if(NOT ${PREFIX}_${_name}_LIBRARY)
if(${PREFIX}_LIBRARY)
# Search the user provided libraries for _name
foreach(_lib ${${PREFIX}_LIBRARY})
get_filename_component(_lib_name ${_lib} NAME)
string(FIND ${_lib_name} ${_name} _lib_found)
if(NOT _lib_found EQUAL -1)
# Set the component library list
set(${PREFIX}_${_name}_LIBRARY ${_lib})
break()
endif()
endforeach()
else()
set(${PREFIX}_LIB_SERACH_DIRS)
if(${PREFIX}_ROOT_DIR)
set(${PREFIX}_LIB_SERACH_DIRS "${${PREFIX}_ROOT_DIR}/lib")
endif()
# Search for the library
find_library(${PREFIX}_${_name}_LIBRARY ${_name}
HINTS ${${PREFIX}_PKGCONF_LIBRARY_DIRS} ${${PREFIX}_LIB_SERACH_DIRS}
NO_CMAKE_SYSTEM_PATH)
endif()
endif()
# Check that it exists and set the found variable
if(${PREFIX}_${_name}_LIBRARY AND EXISTS ${${PREFIX}_${_name}_LIBRARY})
set(${PREFIX}_${_name}_FOUND TRUE)
else()
set(${PREFIX}_${_name}_FOUND FALSE)
endif()
mark_as_advanced(${PREFIX}_${_name}_LIBRARY)
endmacro()
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