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include(CMakeParseArguments)
function(find_pkg_config_with_fallback_on_config_script name)
cmake_parse_arguments(ARGS "" "PKG_CONFIG_NAME" "CONFIG_SCRIPT_NAME" ${ARGN})
set(${name}_PKG_CONFIG_NAME ${ARGS_PKG_CONFIG_NAME} PARENT_SCOPE)
find_package(PkgConfig)
if(PKG_CONFIG_FOUND)
pkg_search_module(${name}_PKG_CONFIG QUIET ${ARGS_PKG_CONFIG_NAME})
endif(PKG_CONFIG_FOUND)
if (${name}_PKG_CONFIG_FOUND)
# Found via pkg-config, using it's result values
set(${name}_FOUND ${${name}_PKG_CONFIG_FOUND})
# Try to find real file name of libraries
foreach(lib ${${name}_PKG_CONFIG_LIBRARIES})
find_library(${name}_${lib}_LIBRARY ${lib} HINTS ${${name}_PKG_CONFIG_LIBRARY_DIRS})
mark_as_advanced(${name}_${lib}_LIBRARY)
if(NOT ${name}_${lib}_LIBRARY)
unset(${name}_FOUND)
endif(NOT ${name}_${lib}_LIBRARY)
endforeach(lib)
if(${name}_FOUND)
set(${name}_LIBRARIES "")
foreach(lib ${${name}_PKG_CONFIG_LIBRARIES})
list(APPEND ${name}_LIBRARIES ${${name}_${lib}_LIBRARY})
endforeach(lib)
list(REMOVE_DUPLICATES ${name}_LIBRARIES)
set(${name}_LIBRARIES ${${name}_LIBRARIES} PARENT_SCOPE)
list(GET ${name}_LIBRARIES "0" ${name}_LIBRARY)
set(${name}_FOUND ${${name}_FOUND} PARENT_SCOPE)
set(${name}_INCLUDE_DIRS ${${name}_PKG_CONFIG_INCLUDE_DIRS} PARENT_SCOPE)
set(${name}_LIBRARIES ${${name}_PKG_CONFIG_LIBRARIES} PARENT_SCOPE)
set(${name}_LIBRARY ${${name}_LIBRARY} PARENT_SCOPE)
set(${name}_VERSION ${${name}_PKG_CONFIG_VERSION} PARENT_SCOPE)
if(NOT TARGET ${ARGS_PKG_CONFIG_NAME})
add_library(${ARGS_PKG_CONFIG_NAME} INTERFACE IMPORTED)
set_property(TARGET ${ARGS_PKG_CONFIG_NAME} PROPERTY INTERFACE_COMPILE_OPTIONS "${${name}_PKG_CONFIG_CFLAGS_OTHER}")
set_property(TARGET ${ARGS_PKG_CONFIG_NAME} PROPERTY INTERFACE_INCLUDE_DIRECTORIES "${${name}_PKG_CONFIG_INCLUDE_DIRS}")
set_property(TARGET ${ARGS_PKG_CONFIG_NAME} PROPERTY INTERFACE_LINK_LIBRARIES "${${name}_LIBRARIES}")
endif(NOT TARGET ${ARGS_PKG_CONFIG_NAME})
endif(${name}_FOUND)
else(${name}_PKG_CONFIG_FOUND)
# No success with pkg-config, try via custom a *-config script
find_program(${name}_CONFIG_EXECUTABLE NAMES ${ARGS_CONFIG_SCRIPT_NAME}-config)
mark_as_advanced(${name}_CONFIG_EXECUTABLE)
find_program(${name}_SH_EXECUTABLE NAMES sh)
mark_as_advanced(${name}_SH_EXECUTABLE)
if(${name}_CONFIG_EXECUTABLE)
macro(config_script_fail errcode)
if(${errcode})
message(FATAL_ERROR "Error invoking ${ARGS_CONFIG_SCRIPT_NAME}-config: ${errcode}")
endif(${errcode})
endmacro(config_script_fail)
file(TO_NATIVE_PATH "${${name}_CONFIG_EXECUTABLE}" ${name}_CONFIG_EXECUTABLE)
file(TO_NATIVE_PATH "${${name}_SH_EXECUTABLE}" ${name}_SH_EXECUTABLE)
execute_process(COMMAND "${${name}_SH_EXECUTABLE}" "${${name}_CONFIG_EXECUTABLE}" --version
OUTPUT_VARIABLE ${name}_VERSION
RESULT_VARIABLE ERRCODE
OUTPUT_STRIP_TRAILING_WHITESPACE)
config_script_fail(${ERRCODE})
execute_process(COMMAND "${${name}_SH_EXECUTABLE}" "${${name}_CONFIG_EXECUTABLE}" --api-version
OUTPUT_VARIABLE ${name}_API_VERSION
RESULT_VARIABLE ERRCODE
OUTPUT_STRIP_TRAILING_WHITESPACE)
config_script_fail(${ERRCODE})
execute_process(COMMAND "${${name}_SH_EXECUTABLE}" "${${name}_CONFIG_EXECUTABLE}" --cflags
OUTPUT_VARIABLE ${name}_CFLAGS
RESULT_VARIABLE ERRCODE
OUTPUT_STRIP_TRAILING_WHITESPACE)
config_script_fail(${ERRCODE})
execute_process(COMMAND "${${name}_SH_EXECUTABLE}" "${${name}_CONFIG_EXECUTABLE}" --libs
OUTPUT_VARIABLE ${name}_LDFLAGS
RESULT_VARIABLE ERRCODE
OUTPUT_STRIP_TRAILING_WHITESPACE)
config_script_fail(${ERRCODE})
string(TOLOWER ${name} "${name}_LOWER")
string(REGEX REPLACE "^(.* |)-l([^ ]*${${name}_LOWER}[^ ]*)( .*|)$" "\\2" ${name}_LIBRARY_NAME "${${name}_LDFLAGS}")
string(REGEX REPLACE "^(.* |)-L([^ ]*)( .*|)$" "\\2" ${name}_LIBRARY_DIRS "${${name}_LDFLAGS}")
find_library(${name}_LIBRARY ${${name}_LIBRARY_NAME} HINTS ${${name}_LIBRARY_DIRS})
mark_as_advanced(${name}_LIBRARY)
set(${name}_LIBRARY ${${name}_LIBRARY} PARENT_SCOPE)
set(${name}_VERSION ${${name}_VERSION} PARENT_SCOPE)
unset(${name}_LIBRARY_NAME)
unset(${name}_LIBRARY_DIRS)
if(NOT TARGET ${name}_LOWER)
add_library(${name}_LOWER INTERFACE IMPORTED)
set_property(TARGET ${name}_LOWER PROPERTY INTERFACE_LINK_LIBRARIES "${${name}_LDFLAGS}")
set_property(TARGET ${name}_LOWER PROPERTY INTERFACE_COMPILE_OPTIONS "${${name}_CFLAGS}")
endif(NOT TARGET ${name}_LOWER)
endif(${name}_CONFIG_EXECUTABLE)
endif(${name}_PKG_CONFIG_FOUND)
endfunction()
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