diff -Naur mpfr-3.1.2/acinclude.m4 mpfr-3.1.2-p/acinclude.m4
--- mpfr-3.1.2/acinclude.m4	2013-03-13 19:37:46.000000000 +0400
+++ mpfr-3.1.2-p/acinclude.m4	2013-03-18 07:13:02.093333305 +0400
@@ -783,7 +783,7 @@
 [AC_REQUIRE([AC_CANONICAL_HOST])
 AC_SUBST(MPFR_LIBM,'')
 case $host in
-  *-*-beos* | *-*-cygwin* | *-*-pw32*)
+  *-*-beos* | *-*-cygwin* | *-*-msys* | *-*-pw32*)
     # According to libtool AC CHECK LIBM, these systems don't have libm
     ;;
   *-*-solaris*)
diff -Naur mpfr-3.1.2/compile mpfr-3.1.2-p/compile
--- mpfr-3.1.2/compile	2013-03-13 19:38:21.000000000 +0400
+++ mpfr-3.1.2-p/compile	2013-03-18 07:13:02.103333233 +0400
@@ -54,7 +54,7 @@
 	  MINGW*)
 	    file_conv=mingw
 	    ;;
-	  CYGWIN*)
+	  CYGWIN* | MSYS*)
 	    file_conv=cygwin
 	    ;;
 	  *)
diff -Naur mpfr-3.1.2/config.guess mpfr-3.1.2-p/config.guess
--- mpfr-3.1.2/config.guess	2013-03-13 19:38:21.000000000 +0400
+++ mpfr-3.1.2-p/config.guess	2013-03-18 07:13:02.103333233 +0400
@@ -844,6 +844,9 @@
     amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*)
 	echo x86_64-unknown-cygwin
 	exit ;;
+    amd64:MSYS*:*:* | x86_64:MSYS*:*:*)
+	echo x86_64-unknown-msys
+	exit ;;
     p*:CYGWIN*:*)
 	echo powerpcle-unknown-cygwin
 	exit ;;
diff -Naur mpfr-3.1.2/configure mpfr-3.1.2-p/configure
--- mpfr-3.1.2/configure	2013-03-13 19:38:20.000000000 +0400
+++ mpfr-3.1.2-p/configure	2013-03-18 07:13:02.149999846 +0400
@@ -2420,7 +2420,7 @@
       || { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "failed to load site script $ac_site_file
-See \`config.log' for more details" "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5 ; }
   fi
 done
 
@@ -2645,11 +2645,11 @@
 '
 case `pwd` in
   *[\\\"\#\$\&\'\`$am_lf]*)
-    as_fn_error $? "unsafe absolute working directory name" "$LINENO" 5;;
+    as_fn_error $? "unsafe absolute working directory name" "$LINENO" 5 ;;
 esac
 case $srcdir in
   *[\\\"\#\$\&\'\`$am_lf\ \	]*)
-    as_fn_error $? "unsafe srcdir value: \`$srcdir'" "$LINENO" 5;;
+    as_fn_error $? "unsafe srcdir value: \`$srcdir'" "$LINENO" 5 ;;
 esac
 
 # Do `set' in a subshell so we don't clobber the current shell's
@@ -3059,7 +3059,7 @@
 $as_echo "$ac_cv_build" >&6; }
 case $ac_cv_build in
 *-*-*) ;;
-*) as_fn_error $? "invalid value of canonical build" "$LINENO" 5;;
+*) as_fn_error $? "invalid value of canonical build" "$LINENO" 5 ;;
 esac
 build=$ac_cv_build
 ac_save_IFS=$IFS; IFS='-'
@@ -3092,7 +3092,7 @@
 $as_echo "$ac_cv_host" >&6; }
 case $ac_cv_host in
 *-*-*) ;;
-*) as_fn_error $? "invalid value of canonical host" "$LINENO" 5;;
+*) as_fn_error $? "invalid value of canonical host" "$LINENO" 5 ;;
 esac
 host=$ac_cv_host
 ac_save_IFS=$IFS; IFS='-'
@@ -3338,7 +3338,7 @@
       { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "Do not use --with-gmp and --with-gmp-include/--with-gmp-lib options simultaneously.
-See \`config.log' for more details" "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5 ; }
    fi
 
 fi
@@ -3370,7 +3370,7 @@
       { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "Do not use --with-gmp-build and other --with-gmp options simultaneously.
-See \`config.log' for more details" "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5 ; }
    fi
 
 fi
@@ -3394,7 +3394,7 @@
 $as_echo "#define WANT_GMP_INTERNALS 1" >>confdefs.h
  ;;
       no)  ;;
-      *) as_fn_error $? "bad value for --enable-gmp-internals: yes or no" "$LINENO" 5 ;;
+      *) as_fn_error $? "bad value for --enable-gmp-internals: yes or no" "$LINENO" 5  ;;
      esac
 fi
 
@@ -3409,7 +3409,7 @@
       full)
 $as_echo "#define WANT_ASSERT 2" >>confdefs.h
  ;;
-      *) as_fn_error $? "bad value for --enable-assert: yes, no or full" "$LINENO" 5 ;;
+      *) as_fn_error $? "bad value for --enable-assert: yes, no or full" "$LINENO" 5  ;;
      esac
 fi
 
@@ -3420,7 +3420,7 @@
 $as_echo "#define MPFR_USE_LOGGING 1" >>confdefs.h
  ;;
       no)  ;;
-      *)   as_fn_error $? "bad value for --enable-logging: yes or no" "$LINENO" 5 ;;
+      *)   as_fn_error $? "bad value for --enable-logging: yes or no" "$LINENO" 5  ;;
      esac
 fi
 
@@ -3429,7 +3429,7 @@
   enableval=$enable_thread_safe;  case $enableval in
       yes) ;;
       no)  ;;
-      *)   as_fn_error $? "bad value for --enable-thread-safe: yes or no" "$LINENO" 5 ;;
+      *)   as_fn_error $? "bad value for --enable-thread-safe: yes or no" "$LINENO" 5  ;;
      esac
 fi
 
@@ -3440,7 +3440,7 @@
 $as_echo "#define MPFR_USE_WARNINGS 1" >>confdefs.h
  ;;
       no)  ;;
-      *)   as_fn_error $? "bad value for --enable-warnings: yes or no" "$LINENO" 5 ;;
+      *)   as_fn_error $? "bad value for --enable-warnings: yes or no" "$LINENO" 5  ;;
      esac
 fi
 
@@ -3458,7 +3458,7 @@
 #define MPFR_TESTS_TIMEOUT $enableval
 _ACEOF
  ;;
-      *)    as_fn_error $? "bad value for --enable-tests-timeout" "$LINENO" 5 ;;
+      *)    as_fn_error $? "bad value for --enable-tests-timeout" "$LINENO" 5  ;;
      esac
 fi
 
@@ -3827,7 +3827,7 @@
 test -z "$CC" && { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "no acceptable C compiler found in \$PATH
-See \`config.log' for more details" "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5 ; }
 
 # Provide some information about the compiler.
 $as_echo "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5
@@ -3942,7 +3942,7 @@
 { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error 77 "C compiler cannot create executables
-See \`config.log' for more details" "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5 ; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
@@ -3985,7 +3985,7 @@
   { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "cannot compute suffix of executables: cannot compile and link
-See \`config.log' for more details" "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5 ; }
 fi
 rm -f conftest conftest$ac_cv_exeext
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5
@@ -4044,7 +4044,7 @@
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "cannot run C compiled programs.
 If you meant to cross compile, use \`--host'.
-See \`config.log' for more details" "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5 ; }
     fi
   fi
 fi
@@ -4096,7 +4096,7 @@
 { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "cannot compute suffix of object files: cannot compile
-See \`config.log' for more details" "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5 ; }
 fi
 rm -f conftest.$ac_cv_objext conftest.$ac_ext
 fi
@@ -4634,7 +4634,7 @@
   { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "C preprocessor \"$CPP\" fails sanity check
-See \`config.log' for more details" "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5 ; }
 fi
 
 ac_ext=c
@@ -4738,7 +4738,7 @@
           { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "neither DPD nor BID
-See \`config.log' for more details" "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5 ; }
        fi
        { $as_echo "$as_me:${as_lineno-$LINENO}: result: BID" >&5
 $as_echo "BID" >&6; }
@@ -4749,7 +4749,7 @@
 
            ;;
       no)  ;;
-      *)   as_fn_error $? "bad value for --enable-decimal-float: yes or no" "$LINENO" 5 ;;
+      *)   as_fn_error $? "bad value for --enable-decimal-float: yes or no" "$LINENO" 5  ;;
      esac
 fi
 
@@ -5069,7 +5069,7 @@
 MPFR_LIBM=''
 
 case $host in
-  *-*-beos* | *-*-cygwin* | *-*-pw32*)
+  *-*-beos* | *-*-cygwin* | *-*-msys* | *-*-pw32*)
     # According to libtool AC CHECK LIBM, these systems don't have libm
     ;;
   *-*-solaris*)
@@ -6968,7 +6968,7 @@
 enable_win32_dll=yes
 
 case $host in
-*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-cegcc*)
+*-*-cygwin* | *-*-msys* | *-*-mingw* | *-*-pw32* | *-*-cegcc*)
   if test -n "$ac_tool_prefix"; then
   # Extract the first word of "${ac_tool_prefix}as", so it can be a program name with args.
 set dummy ${ac_tool_prefix}as; ac_word=$2
@@ -7269,7 +7269,7 @@
 
 
 case $host in
-  *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2*)
+  *-*-cygwin* | *-*-msys* | *-*-mingw* | *-*-pw32* | *-*-os2*)
    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for DLL/static GMP" >&5
 $as_echo_n "checking for DLL/static GMP... " >&6; }
    if test "$enable_shared" = yes; then
@@ -7946,7 +7946,7 @@
     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,
@@ -8136,7 +8136,7 @@
       *-*-mingw* ) # actually msys
         lt_cv_to_host_file_cmd=func_convert_file_msys_to_w32
         ;;
-      *-*-cygwin* )
+      *-*-cygwin* | *-*-msys* )
         lt_cv_to_host_file_cmd=func_convert_file_cygwin_to_w32
         ;;
       * ) # otherwise, assume *nix
@@ -8144,12 +8144,12 @@
         ;;
     esac
     ;;
-  *-*-cygwin* )
+  *-*-cygwin* | *-*-msys* )
     case $build in
       *-*-mingw* ) # actually msys
         lt_cv_to_host_file_cmd=func_convert_file_msys_to_cygwin
         ;;
-      *-*-cygwin* )
+      *-*-cygwin* | *-*-msys*)
         lt_cv_to_host_file_cmd=func_convert_file_noop
         ;;
       * ) # otherwise, assume *nix
@@ -8215,7 +8215,7 @@
 esac
 reload_cmds='$LD$reload_flag -o $output$reload_objs'
 case $host_os in
-  cygwin* | mingw* | pw32* | cegcc*)
+  cygwin* | msys* | mingw* | pw32* | cegcc*)
     if test "$GCC" != yes; then
       reload_cmds=false
     fi
@@ -8370,7 +8370,7 @@
   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'
@@ -8684,7 +8684,7 @@
   lt_cv_sharedlib_from_linklib_cmd='unknown'
 
 case $host_os in
-cygwin* | mingw* | pw32* | cegcc*)
+cygwin* | msys* | mingw* | pw32* | cegcc*)
   # two different shell functions defined in ltmain.sh
   # decide which to use based on capabilities of $DLLTOOL
   case `$DLLTOOL --help 2>&1` in
@@ -9176,7 +9176,7 @@
 aix*)
   symcode='[BCDT]'
   ;;
-cygwin* | mingw* | pw32* | cegcc*)
+cygwin* | msys* | mingw* | pw32* | cegcc*)
   symcode='[ABCDGISTW]'
   ;;
 hpux*)
@@ -11004,7 +11004,7 @@
       # 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
@@ -11088,7 +11088,7 @@
       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'
@@ -11587,7 +11587,7 @@
   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++.
@@ -11705,7 +11705,7 @@
       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'
@@ -12163,7 +12163,7 @@
       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
@@ -13116,7 +13116,7 @@
   # 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
@@ -13148,6 +13148,12 @@
 
       sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api"
       ;;
+    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}${shared_ext}'
+
+      sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api"
+      ;;
     mingw* | cegcc*)
       # MinGW DLLs use traditional 'lib' prefix
       soname_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
@@ -13182,7 +13188,7 @@
       # Convert to MSYS style.
       sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | sed -e 's|\\\\|/|g' -e 's| \\([a-zA-Z]\\):| /\\1|g' -e 's|^ ||'`
       ;;
-    cygwin*)
+    cygwin* | msys*)
       # Convert to unix form, then to dos form, then back to unix form
       # but this time dos style (no spaces!) so that the unix form looks
       # like /cygdrive/c/PROGRA~1:/cygdr...
@@ -13844,7 +13850,7 @@
     lt_cv_dlopen_libs=
     ;;
 
-  cygwin*)
+  cygwin* | msys*)
     lt_cv_dlopen="dlopen"
     lt_cv_dlopen_libs=
     ;;
@@ -14683,7 +14689,7 @@
   { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "cannot run test program while cross compiling
-See \`config.log' for more details" "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5 ; }
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -14738,7 +14744,7 @@
   { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "cannot run test program while cross compiling
-See \`config.log' for more details" "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5 ; }
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -14787,7 +14793,7 @@
   { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "cannot run test program while cross compiling
-See \`config.log' for more details" "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5 ; }
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -14836,7 +14842,7 @@
   { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "cannot run test program while cross compiling
-See \`config.log' for more details" "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5 ; }
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -14885,7 +14891,7 @@
   { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
 $as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
 as_fn_error $? "cannot run test program while cross compiling
-See \`config.log' for more details" "$LINENO" 5; }
+See \`config.log' for more details" "$LINENO" 5 ; }
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
@@ -16031,7 +16037,7 @@
     "tune/Makefile") CONFIG_FILES="$CONFIG_FILES tune/Makefile" ;;
     "src/mparam.h") CONFIG_FILES="$CONFIG_FILES src/mparam.h:src/mparam_h.in" ;;
 
-  *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
+  *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5 ;;
   esac
 done
 
@@ -16240,7 +16246,7 @@
   esac
   case $ac_mode$ac_tag in
   :[FHL]*:*);;
-  :L* | :C*:*) as_fn_error $? "invalid tag \`$ac_tag'" "$LINENO" 5;;
+  :L* | :C*:*) as_fn_error $? "invalid tag \`$ac_tag'" "$LINENO" 5 ;;
   :[FH]-) ac_tag=-:-;;
   :[FH]*) ac_tag=$ac_tag:$ac_tag.in;;
   esac
@@ -16268,7 +16274,7 @@
 	   [\\/$]*) false;;
 	   *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
 	   esac ||
-	   as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5;;
+	   as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5 ;;
       esac
       case $ac_f in *\'*) ac_f=`$as_echo "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac
       as_fn_append ac_file_inputs " '$ac_f'"
@@ -16295,7 +16301,7 @@
 
     case $ac_tag in
     *:-:* | *:-) cat >"$ac_tmp/stdin" \
-      || as_fn_error $? "could not create $ac_file" "$LINENO" 5 ;;
+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5  ;;
     esac
     ;;
   esac
diff -Naur mpfr-3.1.2/configure.ac mpfr-3.1.2-p/configure.ac
--- mpfr-3.1.2/configure.ac	2013-03-13 19:37:46.000000000 +0400
+++ mpfr-3.1.2-p/configure.ac	2013-03-18 07:13:02.149999846 +0400
@@ -359,7 +359,7 @@
 AC_SUBST(LIBMPFR_LDFLAGS)
 AC_LIBTOOL_WIN32_DLL
 case $host in
-  *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2*)
+  *-*-cygwin* | *-*-msys* | *-*-mingw* | *-*-pw32* | *-*-os2*)
    AC_MSG_CHECKING(for DLL/static GMP)
    if test "$enable_shared" = yes; then
      MPFR_LDFLAGS="$MPFR_LDFLAGS -no-undefined"
diff -Naur mpfr-3.1.2/ltmain.sh mpfr-3.1.2-p/ltmain.sh
--- mpfr-3.1.2/ltmain.sh	2013-03-13 19:38:16.000000000 +0400
+++ mpfr-3.1.2-p/ltmain.sh	2013-03-18 07:13:02.149999846 +0400
@@ -1180,7 +1180,7 @@
   test "$opt_debug" = : || func_append preserve_args " --debug"
 
   case $host in
-    *cygwin* | *mingw* | *pw32* | *cegcc*)
+    *cygwin* | *msys* | *mingw* | *pw32* | *cegcc*)
       # don't eliminate duplications in $postdeps and $predeps
       opt_duplicate_compiler_generated_deps=:
       ;;
@@ -2123,7 +2123,7 @@
 
     # On Cygwin there's no "real" PIC flag so we must build both object types
     case $host_os in
-    cygwin* | mingw* | pw32* | os2* | cegcc*)
+    cygwin* | msys* | mingw* | pw32* | os2* | cegcc*)
       pic_mode=default
       ;;
     esac
@@ -2992,7 +2992,7 @@
 	      'exit $?'
 	  tstripme="$stripme"
 	  case $host_os in
-	  cygwin* | mingw* | pw32* | cegcc*)
+	  cygwin* | msys* | mingw* | pw32* | cegcc*)
 	    case $realname in
 	    *.dll.a)
 	      tstripme=""
@@ -3098,7 +3098,7 @@
 
 	# Do a test to see if this is really a libtool program.
 	case $host in
-	*cygwin* | *mingw*)
+	*cygwin* | *msys* | *mingw*)
 	    if func_ltwrapper_executable_p "$file"; then
 	      func_ltwrapper_scriptname "$file"
 	      wrapper=$func_ltwrapper_scriptname_result
@@ -3173,7 +3173,7 @@
 	# remove .exe since cygwin /usr/bin/install will append another
 	# one anyway
 	case $install_prog,$host in
-	*/usr/bin/install*,*cygwin*)
+	*/usr/bin/install*,*cygwin*,*msys*)
 	  case $file:$destfile in
 	  *.exe:*.exe)
 	    # this is ok
@@ -3323,7 +3323,7 @@
 	      $RM $export_symbols
 	      eval "${SED} -n -e '/^: @PROGRAM@ $/d' -e 's/^.* \(.*\)$/\1/p' "'< "$nlist" > "$export_symbols"'
 	      case $host in
-	      *cygwin* | *mingw* | *cegcc* )
+	      *cygwin* | *msys* | *mingw* | *cegcc* )
                 eval "echo EXPORTS "'> "$output_objdir/$outputname.def"'
                 eval 'cat "$export_symbols" >> "$output_objdir/$outputname.def"'
 	        ;;
@@ -3335,7 +3335,7 @@
 	      eval '$GREP -f "$output_objdir/$outputname.exp" < "$nlist" > "$nlist"T'
 	      eval '$MV "$nlist"T "$nlist"'
 	      case $host in
-	        *cygwin* | *mingw* | *cegcc* )
+	        *cygwin* | *msys* | *mingw* | *cegcc* )
 	          eval "echo EXPORTS "'> "$output_objdir/$outputname.def"'
 	          eval 'cat "$nlist" >> "$output_objdir/$outputname.def"'
 	          ;;
@@ -3349,7 +3349,7 @@
 	  func_basename "$dlprefile"
 	  name="$func_basename_result"
           case $host in
-	    *cygwin* | *mingw* | *cegcc* )
+	    *cygwin* | *msys* | *mingw* | *cegcc* )
 	      # if an import library, we need to obtain dlname
 	      if func_win32_import_lib_p "$dlprefile"; then
 	        func_tr_sh "$dlprefile"
@@ -3502,7 +3502,7 @@
 	# Transform the symbol file into the correct name.
 	symfileobj="$output_objdir/${my_outputname}S.$objext"
 	case $host in
-	*cygwin* | *mingw* | *cegcc* )
+	*cygwin* | *msys* | *mingw* | *cegcc* )
 	  if test -f "$output_objdir/$my_outputname.def"; then
 	    compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"`
 	    finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"`
@@ -4375,7 +4375,7 @@
 	{
 EOF
 	    case "$host" in
-	      *mingw* | *cygwin* )
+	      *mingw* | *msys* | *cygwin* )
 		# make stdout use "unix" line endings
 		echo "          setmode(1,_O_BINARY);"
 		;;
@@ -5094,7 +5094,7 @@
 {
     $opt_debug
     case $host in
-    *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
+    *-*-cygwin* | *-*-msys* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
       # It is impossible to link a dll without this setting, and
       # we shouldn't force the makefile maintainer to figure out
       # which system we are compiling for in order to pass an extra
@@ -5581,7 +5581,7 @@
 	  ;;
 	esac
 	case $host in
-	*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
+	*-*-cygwin* | *-*-msys* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
 	  testbindir=`$ECHO "$dir" | $SED 's*/lib$*/bin*'`
 	  case :$dllsearchpath: in
 	  *":$dir:"*) ;;
@@ -5601,7 +5601,7 @@
       -l*)
 	if test "X$arg" = "X-lc" || test "X$arg" = "X-lm"; then
 	  case $host in
-	  *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-beos* | *-cegcc* | *-*-haiku*)
+	  *-*-cygwin* | *-*-msys* | *-*-mingw* | *-*-pw32* | *-*-beos* | *-cegcc* | *-*-haiku*)
 	    # These systems don't actually have a C or math library (as such)
 	    continue
 	    ;;
@@ -5679,7 +5679,7 @@
 
       -no-install)
 	case $host in
-	*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-darwin* | *-cegcc*)
+	*-*-cygwin* | *-*-msys* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-darwin* | *-cegcc*)
 	  # The PATH hackery in wrapper scripts is required on Windows
 	  # and Darwin in order for the loader to find any dlls it needs.
 	  func_warning "\`-no-install' is ignored for $host"
@@ -6548,7 +6548,7 @@
 	  fi
 	  case "$host" in
 	    # special handling for platforms with PE-DLLs.
-	    *cygwin* | *mingw* | *cegcc* )
+	    *cygwin* | *msys* | *mingw* | *cegcc* )
 	      # Linker will automatically link against shared library if both
 	      # static and shared are present.  Therefore, ensure we extract
 	      # symbols from the import library if a shared library is present
@@ -6692,7 +6692,7 @@
 	if test -n "$library_names" &&
 	   { test "$use_static_libs" = no || test -z "$old_library"; }; then
 	  case $host in
-	  *cygwin* | *mingw* | *cegcc*)
+	  *cygwin* | *msys* | *mingw* | *cegcc*)
 	      # No point in relinking DLLs because paths are not encoded
 	      func_append notinst_deplibs " $lib"
 	      need_relink=no
@@ -6762,7 +6762,7 @@
 	    elif test -n "$soname_spec"; then
 	      # bleh windows
 	      case $host in
-	      *cygwin* | mingw* | *cegcc*)
+	      *cygwin* | *msys* | mingw* | *cegcc*)
 	        func_arith $current - $age
 		major=$func_arith_result
 		versuffix="-$major"
@@ -7626,7 +7626,7 @@
       if test "$build_libtool_libs" = yes; then
 	if test -n "$rpath"; then
 	  case $host in
-	  *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-beos* | *-cegcc* | *-*-haiku*)
+	  *-*-cygwin* | *-*-msys* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-beos* | *-cegcc* | *-*-haiku*)
 	    # these systems don't actually have a c library (as such)!
 	    ;;
 	  *-*-rhapsody* | *-*-darwin1.[012])
@@ -8140,7 +8140,7 @@
 
 	orig_export_symbols=
 	case $host_os in
-	cygwin* | mingw* | cegcc*)
+	cygwin* | msys* | mingw* | cegcc*)
 	  if test -n "$export_symbols" && test -z "$export_symbols_regex"; then
 	    # exporting using user supplied symfile
 	    if test "x`$SED 1q $export_symbols`" != xEXPORTS; then
@@ -8696,7 +8696,7 @@
 
     prog)
       case $host in
-	*cygwin*) func_stripname '' '.exe' "$output"
+	*cygwin* | *msys*) func_stripname '' '.exe' "$output"
 	          output=$func_stripname_result.exe;;
       esac
       test -n "$vinfo" && \
@@ -8809,7 +8809,7 @@
 	  esac
 	fi
 	case $host in
-	*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
+	*-*-cygwin* | *-*-msys* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
 	  testbindir=`${ECHO} "$libdir" | ${SED} -e 's*/lib$*/bin*'`
 	  case :$dllsearchpath: in
 	  *":$libdir:"*) ;;
@@ -8887,7 +8887,7 @@
         # Disable wrappers for cegcc and mingw32ce hosts, we are cross compiling anyway.
         wrappers_required=no
         ;;
-      *cygwin* | *mingw* )
+      *cygwin* | *msys* | *mingw* )
         if test "$build_libtool_libs" != yes; then
           wrappers_required=no
         fi
@@ -9034,14 +9034,14 @@
 	esac
 	# test for cygwin because mv fails w/o .exe extensions
 	case $host in
-	  *cygwin*)
+	  *cygwin* | *msys*)
 	    exeext=.exe
 	    func_stripname '' '.exe' "$outputname"
 	    outputname=$func_stripname_result ;;
 	  *) exeext= ;;
 	esac
 	case $host in
-	  *cygwin* | *mingw* )
+	  *cygwin* | *msys* | *mingw* )
 	    func_dirname_and_basename "$output" "" "."
 	    output_name=$func_basename_result
 	    output_path=$func_dirname_result
@@ -9371,7 +9371,7 @@
 	  # tests/bindir.at for full details.
 	  tdlname=$dlname
 	  case $host,$output,$installed,$module,$dlname in
-	    *cygwin*,*lai,yes,no,*.dll | *mingw*,*lai,yes,no,*.dll | *cegcc*,*lai,yes,no,*.dll)
+	    *cygwin*,*lai,yes,no,*.dll | *msys*,*lai,yes,no,*.dll | *mingw*,*lai,yes,no,*.dll | *cegcc*,*lai,yes,no,*.dll)
 	      # If a -bindir argument was supplied, place the dll there.
 	      if test "x$bindir" != x ;
 	      then
diff -Naur mpfr-3.1.2/m4/libtool.m4 mpfr-3.1.2-p/m4/libtool.m4
--- mpfr-3.1.2/m4/libtool.m4	2013-03-13 19:38:16.000000000 +0400
+++ mpfr-3.1.2-p/m4/libtool.m4	2013-03-18 07:13:02.156666515 +0400
@@ -1623,7 +1623,7 @@
     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,
@@ -1871,7 +1871,7 @@
     lt_cv_dlopen_libs=
     ;;
 
-  cygwin*)
+  cygwin* | msys*)
     lt_cv_dlopen="dlopen"
     lt_cv_dlopen_libs=
     ;;
@@ -2342,7 +2342,7 @@
   # 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
@@ -2374,6 +2374,12 @@
 m4_if([$1], [],[
       sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api"])
       ;;
+    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}'
+m4_if([$1], [],[
+      sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api"])
+      ;;
     mingw* | cegcc*)
       # MinGW DLLs use traditional 'lib' prefix
       soname_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
@@ -2408,7 +2414,7 @@
       # Convert to MSYS style.
       sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | sed -e 's|\\\\|/|g' -e 's| \\([[a-zA-Z]]\\):| /\\1|g' -e 's|^ ||'`
       ;;
-    cygwin*)
+    cygwin* | msys*)
       # Convert to unix form, then to dos form, then back to unix form
       # but this time dos style (no spaces!) so that the unix form looks
       # like /cygdrive/c/PROGRA~1:/cygdr...
@@ -3149,7 +3155,7 @@
 esac
 reload_cmds='$LD$reload_flag -o $output$reload_objs'
 case $host_os in
-  cygwin* | mingw* | pw32* | cegcc*)
+  cygwin* | msys* | mingw* | pw32* | cegcc*)
     if test "$GCC" != yes; then
       reload_cmds=false
     fi
@@ -3205,7 +3211,7 @@
   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'
@@ -3511,7 +3517,7 @@
 [lt_cv_sharedlib_from_linklib_cmd='unknown'
 
 case $host_os in
-cygwin* | mingw* | pw32* | cegcc*)
+cygwin* | msys* | mingw* | pw32* | cegcc*)
   # two different shell functions defined in ltmain.sh
   # decide which to use based on capabilities of $DLLTOOL
   case `$DLLTOOL --help 2>&1` in
@@ -3566,7 +3572,7 @@
 [AC_REQUIRE([AC_CANONICAL_HOST])dnl
 LIBM=
 case $host in
-*-*-beos* | *-*-cegcc* | *-*-cygwin* | *-*-haiku* | *-*-pw32* | *-*-darwin*)
+*-*-beos* | *-*-cegcc* | *-*-cygwin* | *-*-msys* | *-*-haiku* | *-*-pw32* | *-*-darwin*)
   # These system don't have libm, or don't need it
   ;;
 *-ncr-sysv4.3*)
@@ -3641,7 +3647,7 @@
 aix*)
   symcode='[[BCDT]]'
   ;;
-cygwin* | mingw* | pw32* | cegcc*)
+cygwin* | msys* | mingw* | pw32* | cegcc*)
   symcode='[[ABCDGISTW]]'
   ;;
 hpux*)
@@ -3909,7 +3915,7 @@
     beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
       # PIC is the default for these OSes.
       ;;
-    mingw* | cygwin* | os2* | pw32* | cegcc*)
+    mingw* | msys* | cygwin* | os2* | pw32* | 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
@@ -3980,7 +3986,7 @@
 	  ;;
 	esac
 	;;
-      mingw* | cygwin* | os2* | pw32* | cegcc*)
+      mingw* | cygwin* | msys* | os2* | pw32* | 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).
 	m4_if([$1], [GCJ], [],
@@ -4227,7 +4233,7 @@
       # 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
@@ -4312,7 +4318,7 @@
       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).
       m4_if([$1], [GCJ], [],
@@ -4580,7 +4586,7 @@
   pw32*)
     _LT_TAGVAR(export_symbols_cmds, $1)="$ltdll_cmds"
     ;;
-  cygwin* | mingw* | cegcc*)
+  cygwin* | msys* | mingw* | cegcc*)
     case $cc_basename in
     cl*)
       _LT_TAGVAR(exclude_expsyms, $1)='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*'
@@ -4641,7 +4647,7 @@
   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++.
@@ -4759,7 +4765,7 @@
       fi
       ;;
 
-    cygwin* | mingw* | pw32* | cegcc*)
+    cygwin* | msys* | mingw* | pw32* | cegcc*)
       # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
       # as there is no search path for DLLs.
       _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
@@ -5133,7 +5139,7 @@
       _LT_TAGVAR(export_dynamic_flag_spec, $1)=-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
@@ -6134,7 +6140,7 @@
         esac
         ;;
 
-      cygwin* | mingw* | pw32* | cegcc*)
+      cygwin* | msys* | mingw* | pw32* | cegcc*)
 	case $GXX,$cc_basename in
 	,cl* | no,cl*)
 	  # Native MSVC
@@ -7947,7 +7953,7 @@
       *-*-mingw* ) # actually msys
         lt_cv_to_host_file_cmd=func_convert_file_msys_to_w32
         ;;
-      *-*-cygwin* )
+      *-*-cygwin* | *-*-msys* )
         lt_cv_to_host_file_cmd=func_convert_file_cygwin_to_w32
         ;;
       * ) # otherwise, assume *nix
@@ -7955,12 +7961,12 @@
         ;;
     esac
     ;;
-  *-*-cygwin* )
+  *-*-cygwin* | *-*-msys* )
     case $build in
       *-*-mingw* ) # actually msys
         lt_cv_to_host_file_cmd=func_convert_file_msys_to_cygwin
         ;;
-      *-*-cygwin* )
+      *-*-cygwin* | *-*-msys*)
         lt_cv_to_host_file_cmd=func_convert_file_noop
         ;;
       * ) # otherwise, assume *nix
diff -Naur mpfr-3.1.2/m4/ltoptions.m4 mpfr-3.1.2-p/m4/ltoptions.m4
--- mpfr-3.1.2/m4/ltoptions.m4	2013-03-13 19:38:16.000000000 +0400
+++ mpfr-3.1.2-p/m4/ltoptions.m4	2013-03-18 07:13:02.156666515 +0400
@@ -126,7 +126,7 @@
 [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)