file (READ ${CURL_SOURCE_DIR}/include/curl/curlver.h CURL_VERSION_H_CONTENTS)
string (REGEX MATCH "LIBCURL_VERSION_MAJOR[ \t]+([0-9]+)" LIBCURL_VERSION_MJ ${CURL_VERSION_H_CONTENTS})
string (REGEX MATCH "([0-9]+)" LIBCURL_VERSION_MJ ${LIBCURL_VERSION_MJ})
string (REGEX MATCH "LIBCURL_VERSION_MINOR[ \t]+([0-9]+)" LIBCURL_VERSION_MI ${CURL_VERSION_H_CONTENTS})
string (REGEX MATCH "([0-9]+)" LIBCURL_VERSION_MI ${LIBCURL_VERSION_MI})
string (REGEX MATCH "LIBCURL_VERSION_PATCH[ \t]+([0-9]+)" LIBCURL_VERSION_PT ${CURL_VERSION_H_CONTENTS})
string (REGEX MATCH "([0-9]+)" LIBCURL_VERSION_PT ${LIBCURL_VERSION_PT})
set (CURL_MAJOR_VERSION ${LIBCURL_VERSION_MJ})
set (CURL_MINOR_VERSION ${LIBCURL_VERSION_MI})
set (CURL_PATCH_VERSION ${LIBCURL_VERSION_PT})