diff --git a/irssi/0000_msysize.patch b/irssi/0000_msysize.patch
new file mode 100644
index 00000000..16f88439
--- /dev/null
+++ b/irssi/0000_msysize.patch
@@ -0,0 +1,137 @@
+diff -Naur a/build-aux/config.sub b/build-aux/config.sub
+--- a/build-aux/config.sub	2014-05-31 14:25:04.860938500 -0500
++++ b/build-aux/config.sub	2014-05-31 14:56:09.588680900 -0500
+@@ -1293,7 +1293,7 @@
+ 	      | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
+ 	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
+ 	      | -chorusos* | -chorusrdb* | -cegcc* \
+-	      | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
++	      | -cygwin* | -msys* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
+ 	      | -mingw32* | -linux-gnu* | -linux-newlib* | -linux-uclibc* \
+ 	      | -uxpv* | -beos* | -mpeix* | -udk* \
+ 	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
+diff -Naur a/configure b/configure
+--- a/configure	2014-05-31 14:25:04.940938600 -0500
++++ b/configure	2014-05-31 14:51:42.394225900 -0500
+@@ -5661,7 +5661,7 @@
+     lt_cv_sys_max_cmd_len=-1;
+     ;;
+ 
+-  cygwin* | mingw* | cegcc*)
++  cygwin* | msys* | mingw* | cegcc*)
+     # On Win9x/ME, this test blows up -- it succeeds, but takes
+     # about 5 minutes as the teststring grows exponentially.
+     # Worse, since 9x/ME are not pre-emptively multitasking,
+@@ -5998,7 +5998,7 @@
+   lt_cv_file_magic_test_file=/shlib/libc.so
+   ;;
+ 
+-cygwin*)
++cygwin* | msys* )
+   # func_win32_libid is a shell function defined in ltmain.sh
+   lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
+   lt_cv_file_magic_cmd='func_win32_libid'
+@@ -6561,7 +6561,7 @@
+ aix*)
+   symcode='[BCDT]'
+   ;;
+-cygwin* | mingw* | pw32* | cegcc*)
++cygwin* | msys* | mingw* | pw32* | cegcc*)
+   symcode='[ABCDGISTW]'
+   ;;
+ hpux*)
+@@ -8285,7 +8285,7 @@
+       # PIC is the default for these OSes.
+       ;;
+ 
+-    mingw* | cygwin* | pw32* | os2* | cegcc*)
++    mingw* | cygwin* | msys* | pw32* | os2* | cegcc*)
+       # This hack is so that the source file can tell whether it is being
+       # built for inclusion in a dll (and should export symbols for example).
+       # Although the cygwin gcc ignores -fPIC, still need this for old-style
+@@ -8354,7 +8354,7 @@
+       fi
+       ;;
+ 
+-    mingw* | cygwin* | pw32* | os2* | cegcc*)
++    mingw* | cygwin* | msys* | pw32* | os2* | cegcc*)
+       # This hack is so that the source file can tell whether it is being
+       # built for inclusion in a dll (and should export symbols for example).
+       lt_prog_compiler_pic='-DDLL_EXPORT'
+@@ -8816,7 +8816,7 @@
+   extract_expsyms_cmds=
+ 
+   case $host_os in
+-  cygwin* | mingw* | pw32* | cegcc*)
++  cygwin* | msys* | mingw* | pw32* | cegcc*)
+     # FIXME: the MSVC++ port hasn't been tested in a loooong time
+     # When not using gcc, we currently assume that we are using
+     # Microsoft Visual C++.
+@@ -8903,7 +8903,7 @@
+       fi
+       ;;
+ 
+-    cygwin* | mingw* | pw32* | cegcc*)
++    cygwin* | msys* | mingw* | pw32* | cegcc*)
+       # _LT_TAGVAR(hardcode_libdir_flag_spec, ) is actually meaningless,
+       # as there is no search path for DLLs.
+       hardcode_libdir_flag_spec='-L$libdir'
+@@ -9316,7 +9316,7 @@
+       export_dynamic_flag_spec=-rdynamic
+       ;;
+ 
+-    cygwin* | mingw* | pw32* | cegcc*)
++    cygwin* | msys* | mingw* | pw32* | cegcc*)
+       # When not using gcc, we currently assume that we are using
+       # Microsoft Visual C++.
+       # hardcode_libdir_flag_spec is actually meaningless, as there is
+@@ -10159,14 +10159,14 @@
+   # libtool to hard-code these into programs
+   ;;
+ 
+-cygwin* | mingw* | pw32* | cegcc*)
++cygwin* | msys* | mingw* | pw32* | cegcc*)
+   version_type=windows
+   shrext_cmds=".dll"
+   need_version=no
+   need_lib_prefix=no
+ 
+   case $GCC,$host_os in
+-  yes,cygwin* | yes,mingw* | yes,pw32* | yes,cegcc*)
++  yes,cygwin* | yes,msys* | yes,mingw* | yes,pw32* | yes,cegcc*)
+     library_names_spec='$libname.dll.a'
+     # DLL is installed to $(libdir)/../bin by postinstall_cmds
+     postinstall_cmds='base_file=`basename \${file}`~
+@@ -10189,6 +10189,11 @@
+       soname_spec='`echo ${libname} | sed -e 's/^lib/cyg/'``echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+       sys_lib_search_path_spec="/usr/lib /lib/w32api /lib /usr/local/lib"
+       ;;
++    msys*)
++      # Msys DLLs use 'msys' prefix rather than 'lib'
++      soname_spec='`echo ${libname} | sed -e 's/^lib/msys/'``echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
++      sys_lib_search_path_spec="/usr/lib /lib/w32api /lib /usr/local/lib"
++      ;;
+     mingw* | cegcc*)
+       # MinGW DLLs use traditional 'lib' prefix
+       soname_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
+@@ -10812,7 +10817,7 @@
+     lt_cv_dlopen_libs=
+     ;;
+ 
+-  cygwin*)
++  cygwin* | msys* )
+     lt_cv_dlopen="dlopen"
+     lt_cv_dlopen_libs=
+     ;;
+diff -Naur a/ltoptions.m4 b/ltoptions.m4
+--- a/ltoptions.m4	2014-05-31 14:25:05.400939300 -0500
++++ b/ltoptions.m4	2014-05-31 14:28:55.491256800 -0500
+@@ -125,7 +125,7 @@
+ [enable_win32_dll=yes
+ 
+ case $host in
+-*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-cegcc*)
++*-*-cygwin* | *-*-msys* | *-*-mingw* | *-*-pw32* | *-cegcc*)
+   AC_CHECK_TOOL(AS, as, false)
+   AC_CHECK_TOOL(DLLTOOL, dlltool, false)
+   AC_CHECK_TOOL(OBJDUMP, objdump, false)