Hi, At Sun, 15 Mar 2009 12:23:38 +0900, Roger Pack wrote in [ruby-core:22894]: > gcc -I. -I../.. -I../../../ruby_1_8 -I../../../ruby_1_8/ext/socket -DHAVE_SOCKADDR_STORAGE -DHAVE_INET_NTOA -DHAVE_GETSERVBYPORT -Dsocklen_t=int -DHAVE_WSACLEANUP -DHAVE_GETHOSTNAME -I. -g -O2 -c ../../../ruby_1_8/ext/socket/socket.c > In file included from ../../../ruby_1_8/win32/win32.h:30, > from ../../../ruby_1_8/defines.h:183, > from ../../../ruby_1_8/ruby.h:37, > from ../../../ruby_1_8/ext/socket/socket.c:13: > c:\dev\rubyi_43\sandbox\mingw\bin\../lib/gcc/mingw32/4.3.3/../../../../include/ws2tcpip.h:272: error: two or more data types in declaration specifiers > make[1]: *** [socket.o] Error 1 > > surrounding the offending line [272] with an > #ifndef socklen_t > typedef int socklen_t; > #endif > seems to fix it. Seems extconf.rb failed to detect socklen_t. Could you show the mkmf.log? -- Nobu Nakada