+if(QUICLY_INCLUDE_DIR AND PICOTLS_INCLUDE_DIR AND PICOTLS_LINK_LIBRARIES)
+ if(EXISTS "${QUICLY_INCLUDE_DIR}/quicly/version.h")
+ file(STRINGS "${QUICLY_INCLUDE_DIR}/quicly/version.h" quicly_version_str REGEX "^#define[\t ]+LIBQUICLY_VERSION[\t ]+\".*\"")
+ string(REGEX REPLACE "^#define[\t ]+LIBQUICLY_VERSION[\t ]+\"([^\"]*)\".*" "\\1" QUICLY_VERSION_STRING "${quicly_version_str}")
+ unset(quicly_version_str)
+ endif()
+
+ if (${QUICLY_VERSION_STRING} MATCHES "${EXPECTED_QUICLY_VERSION}")