crowsite/libs/crow/cmake/Findasio.cmake

51 lines
1.1 KiB
CMake

#Findasio.cmake
#
# Finds the asio library
#
# from https://think-async.com/Asio/
#
# This will define the following variables
#
# ASIO_FOUND
# ASIO_INCLUDE_DIR
#
# and the following imported targets
#
# asio::asio
#
find_package(Threads QUIET)
if (Threads_FOUND)
find_path(ASIO_INCLUDE_DIR asio.hpp)
mark_as_advanced(ASIO_FOUND ASIO_INCLUDE_DIR)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(asio
FOUND_VAR ASIO_FOUND
REQUIRED_VARS ASIO_INCLUDE_DIR
)
if(ASIO_FOUND AND NOT TARGET asio::asio)
add_library(asio::asio INTERFACE IMPORTED)
target_include_directories(asio::asio
INTERFACE
${ASIO_INCLUDE_DIR}
)
target_compile_definitions(asio::asio
INTERFACE
"ASIO_STANDALONE"
)
target_link_libraries(asio::asio
INTERFACE
Threads::Threads
)
endif()
else()
if(asio_FIND_REQUIRED)
message(FATAL_ERROR "asio requires Threads, which couldn't be found.")
elseif(asio_FIND_QUIETLY)
message(STATUS "asio requires Threads, which couldn't be found.")
endif()
endif()