meson cmake bug

meson.build

project('test', 'cpp')

prometheus_cpp = dependency('prometheus-cpp', method: 'cmake', modules: ['prometheus-cpp::core'], static: false)

prometheus-cpp-config.cmake

# put this here: /usr/lib/cmake/prometheus-cpp/prometheus-cpp-config.cmake

set(PACKAGE_PREFIX_DIR "/usr")
include(CMakeFindDependencyMacro)

set(prometheus-cpp_INCLUDE_DIR "${PACKAGE_PREFIX_DIR}/include")
set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
find_dependency(Threads)
unset(CMAKE_THREAD_PREFER_PTHREAD)

set(CMAKE_IMPORT_FILE_VERSION 1)

set(_IMPORT_PREFIX "/usr")

add_library(prometheus-cpp::core STATIC IMPORTED)

set_target_properties(prometheus-cpp::core PROPERTIES
  INTERFACE_INCLUDE_DIRECTORIES "${_IMPORT_PREFIX}/include"
  INTERFACE_LINK_LIBRARIES "\$<LINK_ONLY:Threads::Threads>;\$<LINK_ONLY:\$<\$<AND:\$<BOOL:UNIX>,\$<NOT:\$<BOOL:APPLE>>>:rt>>"
)

set_property(TARGET prometheus-cpp::core APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
set_target_properties(prometheus-cpp::core PROPERTIES
  IMPORTED_LINK_INTERFACE_LANGUAGES_RELEASE "CXX"
  IMPORTED_LOCATION_RELEASE "${_IMPORT_PREFIX}/lib/libprometheus-cpp-core.a"
  )