obs-studio/cmake/Modules/FindLibcurl.cmake

# Once done these will be defined:
#
#  LIBCURL_FOUND
#  LIBCURL_INCLUDE_DIRS
#  LIBCURL_LIBRARIES
#
# For use in OBS:
#
#  CURL_INCLUDE_DIR

find_package(PkgConfig QUIET)
if (PKG_CONFIG_FOUND)
	pkg_check_modules(_CURL QUIET curl libcurl)
endif()

if(CMAKE_SIZEOF_VOID_P EQUAL 8)
	set(_lib_suffix 64)
else()
	set(_lib_suffix 32)
endif()

find_path(CURL_INCLUDE_DIR
	NAMES curl/curl.h
	HINTS
		ENV curlPath${_lib_suffix}
		ENV curlPath
		ENV DepsPath${_lib_suffix}
		ENV DepsPath
		${curlPath${_lib_suffix}}
		${curlPath}
		${DepsPath${_lib_suffix}}
		${DepsPath}
		${_CURL_INCLUDE_DIRS}
	PATHS
		/usr/include /usr/local/include /opt/local/include /sw/include
	PATH_SUFFIXES
		include)

if(APPLE)
	find_library(CURL_LIB
		NAMES ${_CURL_LIBRARIES} curl libcurl
		HINTS
			ENV curlPath${_lib_suffix}
			ENV curlPath
			ENV DepsPath${_lib_suffix}
			ENV DepsPath
			${curlPath${_lib_suffix}}
			${curlPath}
			${DepsPath${_lib_suffix}}
			${DepsPath}
			${_CURL_LIBRARY_DIRS}
		)
else()
	find_library(CURL_LIB
		NAMES ${_CURL_LIBRARIES} curl libcurl
		HINTS
			ENV curlPath${_lib_suffix}
			ENV curlPath
			ENV DepsPath${_lib_suffix}
			ENV DepsPath
			${curlPath${_lib_suffix}}
			${curlPath}
			${DepsPath${_lib_suffix}}
			${DepsPath}
			${_CURL_LIBRARY_DIRS}
		PATHS
			/usr/lib /usr/local/lib /opt/local/lib /sw/lib
		PATH_SUFFIXES
			lib${_lib_suffix} lib
			libs${_lib_suffix} libs
			bin${_lib_suffix} bin
			../lib${_lib_suffix} ../lib
			../libs${_lib_suffix} ../libs
			../bin${_lib_suffix} ../bin
			"build/Win${_lib_suffix}/VC12/DLL Release - DLL Windows SSPI"
			"../build/Win${_lib_suffix}/VC12/DLL Release - DLL Windows SSPI")
endif()

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Libcurl DEFAULT_MSG CURL_LIB CURL_INCLUDE_DIR)
mark_as_advanced(CURL_INCLUDE_DIR CURL_LIB)

if(LIBCURL_FOUND)
	set(LIBCURL_INCLUDE_DIRS ${CURL_INCLUDE_DIR})
	set(LIBCURL_LIBRARIES ${CURL_LIB})
endif()