cmake: use LIBCURL_VERSION from curlver.h

This matches the behavior from autotools. The auxiliary major, minor
and patch components are not needed anymore and therefore removed.

Signed-off-by: Peter Wu <peter@lekensteyn.nl>

CMakeLists.txt

@@ -48,27 +48,17 @@ project( CURL C )
 message(WARNING "the curl cmake build system is poorly maintained. Be aware")
 
 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})
+string (REGEX MATCH "#define LIBCURL_VERSION \"[^\"]*"
+  CURL_VERSION ${CURL_VERSION_H_CONTENTS})
+string (REGEX REPLACE "[^\"]+\"" "" CURL_VERSION ${CURL_VERSION})
+string (REGEX MATCH "#define LIBCURL_VERSION_NUM 0x[0-9a-fA-F]+"
+  CURL_VERSION_NUM ${CURL_VERSION_H_CONTENTS})
+string (REGEX REPLACE "[^0]+0x" "" CURL_VERSION_NUM ${CURL_VERSION_NUM})
 
 include_regular_expression("^.*$")    # Sukender: Is it necessary?
 
 # Setup package meta-data
 # SET(PACKAGE "curl")
-set(CURL_VERSION ${CURL_MAJOR_VERSION}.${CURL_MINOR_VERSION}.${CURL_PATCH_VERSION})
 message(STATUS "curl version=[${CURL_VERSION}]")
 # SET(PACKAGE_TARNAME "curl")
 # SET(PACKAGE_NAME "curl")