subsurface/cmake/Modules/HandleFindGit2.cmake

# more libraries with special handling in case we build them ourselves
if(LIBGIT2_FROM_PKGCONFIG)
	pkg_config_library(LIBGIT2 libgit2 REQUIRED)
	set(LIBGIT2_LIBRARIES "")
        if(ANDROID)
                # for Android we need to force a static link against ssl and crypto
                # this is a bit hacky, but it seems to work
                set(LIBGIT2_LIBRARIES ${LIBGIT2_LIBRARIES} ${LIBGIT2_LIBRARY_DIRS}/libssl.a ${LIBGIT2_LIBRARY_DIRS}/libcrypto.a)
        endif()
        if(FORCE_LIBSSH)
                pkg_config_library(LIBSSH2 libssh2 REQUIRED)
                set(LIBGIT2_LIBRARIES ${LIBGIT2_LIBRARIES} ${LIBSSH2_LIBRARIES} -lcrypto)
        endif()
else()
	find_package(LIBGIT2 REQUIRED)
	include_directories(${LIBGIT2_INCLUDE_DIR})
        if(FORCE_LIBSSH)
                find_package(Libssh2 QUIET CONFIG)
		if ("${LIBSSH2_VERSION}" STRLESS "1.7" AND "${LIBSSH2_VERSION}" STRGREATER "1.6.1")
                        set(LIBSSH2_LIBRARIES Libssh2::libssh2)
                endif()
		# at least on my Mac I get the mixed case variable instead...
		if(Libssh2_FOUND)
			set(LIBSSH2_FOUND ${Libssh2_FOUND})
		endif()
                if(!LIBSSH2_FOUND OR "${LIBSSH2_FOUND}" STREQUAL "")
                        pkg_config_library(LIBSSH2 libssh2 REQUIRED)
                endif()
        endif()
        find_package(libcurl QUIET)
        if(!LIBCURL_FOUND OR "${LIBCURL_FOUND}" STREQUAL "")
                pkg_config_library(LIBCURL libcurl REQUIRED)
        endif()
        set(LIBGIT2_LIBRARIES ${LIBGIT2_LIBRARIES} -L${LIBSSH2_LIBRARY_DIRS} ${LIBSSH2_LIBRARIES} ${LIBCURL_LIBRARIES} -lcrypto)
endif()