msgpack/msgpack — pull request #99 by kou (2012-02-27 05:32:42+00:00)
Title: c: supports DLL generation by MinGW

libtool requires -no-undefined link option to generate a DLL
by MinGW. A DLL should not have any unresolved symbols and
-no-undefined link option declares that the library doesn't
depends on any libraries other than the ones listed on the
command line.

See also: description about -no-undefined option at
http://www.gnu.org/software/libtool/manual/libtool.html#Link-mode