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Kai Pastor authored
Before calling pkg_check_modules, modules must check PKG_CONFIG_FOUND. When FindPkgConfig.cmake is loaded, pkg_check_modules is always defined regardless of pkg-config being present. However, the whole module might be disabled on user request with CMAKE_DISABLE_FIND_PACKAGE_PkgConfig. This must not break Find modules which just look for a hint or similar.
25b94758
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