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# Needed for CMAKE_SYSTEM_NAME, CMAKE_LIBRARY_ARCHITECTURE and FIND_LIBRARY_USE_LIB64_PATHS
enable_language(C)
# Prepare environment and variables
set(PKG_CONFIG_USE_CMAKE_PREFIX_PATH FALSE)
set(CMAKE_PREFIX_PATH "${CMAKE_CURRENT_SOURCE_DIR}/pc-foo")
if(WIN32)
set(PKG_CONFIG_EXECUTABLE "${CMAKE_CURRENT_SOURCE_DIR}\\dummy-pkg-config.bat")
set(ENV{CMAKE_PREFIX_PATH} "${CMAKE_CURRENT_SOURCE_DIR}\\pc-bar;X:\\this\\directory\\should\\not\\exist\\in\\the\\filesystem")
set(ENV{PKG_CONFIG_PATH} "C:\\baz")
else()
set(PKG_CONFIG_EXECUTABLE "${CMAKE_CURRENT_SOURCE_DIR}/dummy-pkg-config.sh")
set(ENV{CMAKE_PREFIX_PATH} "${CMAKE_CURRENT_SOURCE_DIR}/pc-bar:/this/directory/should/not/exist/in/the/filesystem")
set(ENV{PKG_CONFIG_PATH} "/baz")
endif()
find_package(PkgConfig)
if(WIN32)
set(expected_path "C:\\baz")
else()
set(expected_path "/baz")
endif()
pkg_check_modules(FOO "${expected_path}")
if(NOT FOO_FOUND)
message(FATAL_ERROR "Expected PKG_CONFIG_PATH: \"${expected_path}\".")
endif()
set(PKG_CONFIG_USE_CMAKE_PREFIX_PATH TRUE)
pkg_check_modules(BAR "${expected_path}" NO_CMAKE_PATH NO_CMAKE_ENVIRONMENT_PATH)
if(NOT BAR_FOUND)
message(FATAL_ERROR "Expected PKG_CONFIG_PATH: \"${expected_path}\".")
endif()
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