Merge pull request #1279 from mcuee/configure_ac_update

Update configure.ac for MinGW build

Author: mcuee

src/configure.ac

@@ -78,6 +78,9 @@ dnl Makefile.am:77: compiling `config_gram.c' with per-target flags requires `AM
 AM_PROG_CC_C_O
 
 # Checks for libraries.
+# For MinGW.
+AC_CHECK_LIB([ws2_32], [WSAStartup])
+
 AC_CHECK_LIB([termcap], [tputs])
 AC_CHECK_LIB([ncurses], [tputs])
 AC_CHECK_LIB([readline], [readline])