include(FeatureSummary)

list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR})

find_package(Foo)
find_package(Bar)

set_package_properties(Foo PROPERTIES TYPE REQUIRED)
feature_summary(WHAT ALL FATAL_ON_MISSING_REQUIRED_PACKAGES)

set_package_properties(Bar PROPERTIES TYPE REQUIRED)
feature_summary(WHAT ALL FATAL_ON_MISSING_REQUIRED_PACKAGES)