describe the cmake situation

lib/Makefile.am

@@ -27,7 +27,7 @@ VCPROJ = libcurl.vcproj
 
 DOCS = README.encoding README.memoryleak README.ares README.curlx	\
  README.hostip README.multi_socket README.httpauth README.pipelining    \
- README.curl_off_t
+ README.curl_off_t README.cmake
 
 CMAKE_DIST = CMakeLists.txt curl_config.h.cmake
 

lib/README.cmake

+
+ CMake build system and (lib)curl
+ ================================
+
+The CMake build support is experimental.
+
+Every now and then people approach us in the project to add support for
+another build system. This time, several people wanted us to add support for
+CMake. So we did.
+
+Since the introduction, however, there has been little to no maintaining of
+this build concept for curl. You cannot build the same set of combinations
+that you can with the autotools version of the build, and there have already
+been bugs filed against the CMake build system that haven't been addressed -
+due to lack of maintainers.
+
+We keep the files included in release archives and CVS for now in the hope
+that people will appreciate it and help us keep them in shape, and even
+improve them to become on par with the main build system. If not, we might
+remove them again in a future version.
+
+Daniel, November 2009 just before the 7.19.7 release