Evaluating MinGW-w64 as toolchain for RI

fail-fiddle-mkmf.log

package configuration for libffi is not found
have_header: checking for ffi.h... -------------------- yes

*** mkmf:try_do ENV={"!::"=>"::\\", "!EXITCODE"=>"00000000", "AR"=>"i686-w64-mingw32-ar",
"AS"=>"i686-w64-mingw32-as", "CC"=>"i686-w64-mingw32-gcc",
"CPATH"=>"C:\\projects\\rubyinstaller-git\\sandbox\\zlib\\include;C:\\projects\\rubyinstaller-git\\sandbox\\libffi\\include;",
"CPP"=>"i686-w64-mingw32-cpp", "CXX"=>"i686-w64-mingw32-g++", "DKVER"=>"mingw64-32-4.5.3",
"DLLTOOL"=>"i686-w64-mingw32-dlltool", "DLLWRAP"=>"i686-w64-mingw32-dllwrap --target=mingw32 --driver-name=\"i686-w64-mingw32-gcc\" -mno-cygwin",
"LIBRARY_PATH"=>"C:\\projects\\rubyinstaller-git\\sandbox\\zlib\\lib;C:\\projects\\rubyinstaller-git\\sandbox\\libffi\\lib;",
"LOCAL"=>"c:\\Users\\Jon\\Documents\\RubyDev\\ruby-git", "MAKEFLAGS"=>"", "MAKELEVEL"=>"1",
"MFLAGS"=>"", "MYDEPS"=>"1", "NM"=>"i686-w64-mingw32-nm", "OBJCOPY"=>"i686-w64-mingw32-objcopy", "OBJDUMP"=>"i686-w64-mingw32-objdump",
"PATH"=>"c:\\projects\\rubyinstaller-git\\sandbox\\zlib\\bin;C:\\projects\\rubyinstaller-git\\sandbox\\devkit\\bin;C:\\projects\\rubyinstaller-git\\sandbox\\devkit\\mingw\\bin;c:\\ruby192\\bin;c:\\git\\cmd;c:\\Windows\\system32;c:\\Windows;c:\\Windows\\System32\\Wbem",
"PWD"=>"c:/projects/rubyinstaller-git/sandbox/ruby19_build", "RANLIB"=>"i686-w64-mingw32-ranlib",
"RUBYLIB"=>"-", "SESSIONNAME"=>"Console", "SHLVL"=>"1", "STRIP"=>"i686-w64-mingw32-strip", "TERM"=>"cygwin",
"WINDRES"=>"i686-w64-mingw32-windres --preprocessor=\"i686-w64-mingw32-cpp -xc\" -DRC_INVOKED", "_"=>"./miniruby.exe"}

"i686-w64-mingw32-cpp -I../../.ext/include/i386-mingw32 -I../../../../../../Users/Jon/Documents/RubyDev/ruby-git/include -I../../../../../../Users/Jon/Documents/RubyDev/ruby-git/ext/fiddle     -O3 -g -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration  conftest.c -o conftest.i"
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <winsock2.h>
4: #include <windows.h>
5: #include <ffi.h>
/* end */

--------------------

*** mkmf:try_do ENV={"!::"=>"::\\", "!EXITCODE"=>"00000000", "AR"=>"i686-w64-mingw32-ar",
"AS"=>"i686-w64-mingw32-as", "CC"=>"i686-w64-mingw32-gcc",
"CPATH"=>"C:\\projects\\rubyinstaller-git\\sandbox\\zlib\\include;C:\\projects\\rubyinstaller-git\\sandbox\\libffi\\include;",
"CPP"=>"i686-w64-mingw32-cpp", "CXX"=>"i686-w64-mingw32-g++", "DKVER"=>"mingw64-32-4.5.3",
"DLLTOOL"=>"i686-w64-mingw32-dlltool", "DLLWRAP"=>"i686-w64-mingw32-dllwrap --target=mingw32 --driver-name=\"i686-w64-mingw32-gcc\" -mno-cygwin",
"LIBRARY_PATH"=>"C:\\projects\\rubyinstaller-git\\sandbox\\zlib\\lib;C:\\projects\\rubyinstaller-git\\sandbox\\libffi\\lib;",
"LOCAL"=>"c:\\Users\\Jon\\Documents\\RubyDev\\ruby-git", "MAKEFLAGS"=>"", "MAKELEVEL"=>"1",
"MFLAGS"=>"", "MYDEPS"=>"1", "NM"=>"i686-w64-mingw32-nm", "OBJCOPY"=>"i686-w64-mingw32-objcopy", "OBJDUMP"=>"i686-w64-mingw32-objdump",
"PATH"=>"c:\\projects\\rubyinstaller-git\\sandbox\\zlib\\bin;C:\\projects\\rubyinstaller-git\\sandbox\\devkit\\bin;C:\\projects\\rubyinstaller-git\\sandbox\\devkit\\mingw\\bin;c:\\ruby192\\bin;c:\\git\\cmd;c:\\Windows\\system32;c:\\Windows;c:\\Windows\\System32\\Wbem",
"PWD"=>"c:/projects/rubyinstaller-git/sandbox/ruby19_build", "RANLIB"=>"i686-w64-mingw32-ranlib",
"RUBYLIB"=>"-", "SESSIONNAME"=>"Console", "SHLVL"=>"1", "STRIP"=>"i686-w64-mingw32-strip", "TERM"=>"cygwin",
"WINDRES"=>"i686-w64-mingw32-windres --preprocessor=\"i686-w64-mingw32-cpp -xc\" -DRC_INVOKED", "_"=>"./miniruby.exe"}

have_library: checking for main() in -lffi... -------------------- no


*** mkmf:try_do ENV={"!::"=>"::\\", "!EXITCODE"=>"00000000", "AR"=>"i686-w64-mingw32-ar",
"AS"=>"i686-w64-mingw32-as", "CC"=>"i686-w64-mingw32-gcc",
"CPATH"=>"C:\\projects\\rubyinstaller-git\\sandbox\\zlib\\include;C:\\projects\\rubyinstaller-git\\sandbox\\libffi\\include;",
"CPP"=>"i686-w64-mingw32-cpp", "CXX"=>"i686-w64-mingw32-g++", "DKVER"=>"mingw64-32-4.5.3",
"DLLTOOL"=>"i686-w64-mingw32-dlltool", "DLLWRAP"=>"i686-w64-mingw32-dllwrap --target=mingw32 --driver-name=\"i686-w64-mingw32-gcc\" -mno-cygwin",
"LIBRARY_PATH"=>"C:\\projects\\rubyinstaller-git\\sandbox\\zlib\\lib;C:\\projects\\rubyinstaller-git\\sandbox\\libffi\\lib;",
"LOCAL"=>"c:\\Users\\Jon\\Documents\\RubyDev\\ruby-git", "MAKEFLAGS"=>"", "MAKELEVEL"=>"1",
"MFLAGS"=>"", "MYDEPS"=>"1", "NM"=>"i686-w64-mingw32-nm", "OBJCOPY"=>"i686-w64-mingw32-objcopy", "OBJDUMP"=>"i686-w64-mingw32-objdump",
"PATH"=>"c:\\projects\\rubyinstaller-git\\sandbox\\zlib\\bin;C:\\projects\\rubyinstaller-git\\sandbox\\devkit\\bin;C:\\projects\\rubyinstaller-git\\sandbox\\devkit\\mingw\\bin;c:\\ruby192\\bin;c:\\git\\cmd;c:\\Windows\\system32;c:\\Windows;c:\\Windows\\System32\\Wbem",
"PWD"=>"c:/projects/rubyinstaller-git/sandbox/ruby19_build", "RANLIB"=>"i686-w64-mingw32-ranlib",
"RUBYLIB"=>"-", "SESSIONNAME"=>"Console", "SHLVL"=>"1", "STRIP"=>"i686-w64-mingw32-strip", "TERM"=>"cygwin",
"WINDRES"=>"i686-w64-mingw32-windres --preprocessor=\"i686-w64-mingw32-cpp -xc\" -DRC_INVOKED", "_"=>"./miniruby.exe"}

"i686-w64-mingw32-gcc -o conftest -I../../.ext/include/i386-mingw32 -I../../../../../../Users/Jon/Documents/RubyDev/ruby-git/include -I../../../../../../Users/Jon/Documents/RubyDev/ruby-git/ext/fiddle     -O3 -g -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration conftest.c  -L. -L../.. -L.      -lmsvcrt-ruby191-static -lffi  -lshell32 -lws2_32 -limagehlp  "
c:/projects/rubyinstaller-git/sandbox/devkit/mingw/bin/../lib/gcc/i686-w64-mingw32/4.5.3/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -lffi

collect2: ld returned 1 exit status

checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <winsock2.h>
4: #include <windows.h>
5: 
6: /*top*/
7: int main() {return 0;}
8: int t() { void ((*volatile p)()); p = (void ((*)()))main; return 0; }
/* end */

"i686-w64-mingw32-gcc -o conftest -I../../.ext/include/i386-mingw32 -I../../../../../../Users/Jon/Documents/RubyDev/ruby-git/include -I../../../../../../Users/Jon/Documents/RubyDev/ruby-git/ext/fiddle     -O3 -g -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration conftest.c  -L. -L../.. -L.      -lmsvcrt-ruby191-static -lffi  -lshell32 -lws2_32 -limagehlp  "
c:/projects/rubyinstaller-git/sandbox/devkit/mingw/bin/../lib/gcc/i686-w64-mingw32/4.5.3/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -lffi

collect2: ld returned 1 exit status

checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <winsock2.h>
4: #include <windows.h>
5: 
6: /*top*/
7: int main() {return 0;}
8: int t() { main(); return 0; }
/* end */

--------------------

*** mkmf:try_do ENV={"!::"=>"::\\", "!EXITCODE"=>"00000000", "AR"=>"i686-w64-mingw32-ar",
"AS"=>"i686-w64-mingw32-as", "CC"=>"i686-w64-mingw32-gcc",
"CPATH"=>"C:\\projects\\rubyinstaller-git\\sandbox\\zlib\\include;C:\\projects\\rubyinstaller-git\\sandbox\\libffi\\include;",
"CPP"=>"i686-w64-mingw32-cpp", "CXX"=>"i686-w64-mingw32-g++", "DKVER"=>"mingw64-32-4.5.3", 
"DLLTOOL"=>"i686-w64-mingw32-dlltool", "DLLWRAP"=>"i686-w64-mingw32-dllwrap --target=mingw32 --driver-name=\"i686-w64-mingw32-gcc\" -mno-cygwin",
"LIBRARY_PATH"=>"C:\\projects\\rubyinstaller-git\\sandbox\\zlib\\lib;C:\\projects\\rubyinstaller-git\\sandbox\\libffi\\lib;",
"LOCAL"=>"c:\\Users\\Jon\\Documents\\RubyDev\\ruby-git", "MAKEFLAGS"=>"", "MAKELEVEL"=>"1",
"MFLAGS"=>"", "MYDEPS"=>"1", "NM"=>"i686-w64-mingw32-nm", "OBJCOPY"=>"i686-w64-mingw32-objcopy", "OBJDUMP"=>"i686-w64-mingw32-objdump",
"PATH"=>"c:\\projects\\rubyinstaller-git\\sandbox\\zlib\\bin;C:\\projects\\rubyinstaller-git\\sandbox\\devkit\\bin;C:\\projects\\rubyinstaller-git\\sandbox\\devkit\\mingw\\bin;c:\\ruby192\\bin;c:\\git\\cmd;c:\\Windows\\system32;c:\\Windows;c:\\Windows\\System32\\Wbem",
"PWD"=>"c:/projects/rubyinstaller-git/sandbox/ruby19_build", "RANLIB"=>"i686-w64-mingw32-ranlib",
"RUBYLIB"=>"-", "SESSIONNAME"=>"Console", "SHLVL"=>"1", "STRIP"=>"i686-w64-mingw32-strip", "TERM"=>"cygwin",
"WINDRES"=>"i686-w64-mingw32-windres --preprocessor=\"i686-w64-mingw32-cpp -xc\" -DRC_INVOKED", "_"=>"./miniruby.exe"}

have_library: checking for main() in -llibffi... -------------------- no


*** mkmf:try_do ENV={"!::"=>"::\\", "!EXITCODE"=>"00000000", "AR"=>"i686-w64-mingw32-ar",
"AS"=>"i686-w64-mingw32-as", "CC"=>"i686-w64-mingw32-gcc",
"CPATH"=>"C:\\projects\\rubyinstaller-git\\sandbox\\zlib\\include;C:\\projects\\rubyinstaller-git\\sandbox\\libffi\\include;",
"CPP"=>"i686-w64-mingw32-cpp", "CXX"=>"i686-w64-mingw32-g++", "DKVER"=>"mingw64-32-4.5.3",
"DLLTOOL"=>"i686-w64-mingw32-dlltool", "DLLWRAP"=>"i686-w64-mingw32-dllwrap --target=mingw32 --driver-name=\"i686-w64-mingw32-gcc\" -mno-cygwin",
"LIBRARY_PATH"=>"C:\\projects\\rubyinstaller-git\\sandbox\\zlib\\lib;C:\\projects\\rubyinstaller-git\\sandbox\\libffi\\lib;",
"LOCAL"=>"c:\\Users\\Jon\\Documents\\RubyDev\\ruby-git", "MAKEFLAGS"=>"", "MAKELEVEL"=>"1",
"MFLAGS"=>"", "MYDEPS"=>"1", "NM"=>"i686-w64-mingw32-nm", "OBJCOPY"=>"i686-w64-mingw32-objcopy", "OBJDUMP"=>"i686-w64-mingw32-objdump",
"PATH"=>"c:\\projects\\rubyinstaller-git\\sandbox\\zlib\\bin;C:\\projects\\rubyinstaller-git\\sandbox\\devkit\\bin;C:\\projects\\rubyinstaller-git\\sandbox\\devkit\\mingw\\bin;c:\\ruby192\\bin;c:\\git\\cmd;c:\\Windows\\system32;c:\\Windows;c:\\Windows\\System32\\Wbem",
"PWD"=>"c:/projects/rubyinstaller-git/sandbox/ruby19_build", "RANLIB"=>"i686-w64-mingw32-ranlib",
"RUBYLIB"=>"-", "SESSIONNAME"=>"Console", "SHLVL"=>"1", "STRIP"=>"i686-w64-mingw32-strip", "TERM"=>"cygwin",
"WINDRES"=>"i686-w64-mingw32-windres --preprocessor=\"i686-w64-mingw32-cpp -xc\" -DRC_INVOKED", "_"=>"./miniruby.exe"}

"i686-w64-mingw32-gcc -o conftest -I../../.ext/include/i386-mingw32 -I../../../../../../Users/Jon/Documents/RubyDev/ruby-git/include -I../../../../../../Users/Jon/Documents/RubyDev/ruby-git/ext/fiddle     -O3 -g -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration conftest.c  -L. -L../.. -L.      -lmsvcrt-ruby191-static -llibffi  -lshell32 -lws2_32 -limagehlp  "
c:/projects/rubyinstaller-git/sandbox/devkit/mingw/bin/../lib/gcc/i686-w64-mingw32/4.5.3/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -llibffi

collect2: ld returned 1 exit status

checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <winsock2.h>
4: #include <windows.h>
5: 
6: /*top*/
7: int main() {return 0;}
8: int t() { void ((*volatile p)()); p = (void ((*)()))main; return 0; }
/* end */

"i686-w64-mingw32-gcc -o conftest -I../../.ext/include/i386-mingw32 -I../../../../../../Users/Jon/Documents/RubyDev/ruby-git/include -I../../../../../../Users/Jon/Documents/RubyDev/ruby-git/ext/fiddle     -O3 -g -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration conftest.c  -L. -L../.. -L.      -lmsvcrt-ruby191-static -llibffi  -lshell32 -lws2_32 -limagehlp  "
c:/projects/rubyinstaller-git/sandbox/devkit/mingw/bin/../lib/gcc/i686-w64-mingw32/4.5.3/../../../../i686-w64-mingw32/bin/ld.exe: cannot find -llibffi

collect2: ld returned 1 exit status

checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <winsock2.h>
4: #include <windows.h>
5: 
6: /*top*/
7: int main() {return 0;}
8: int t() { main(); return 0; }
/* end */

--------------------

link_test.c

/*
 * 1) save this file as sandbox/link_test.c
 * 2) execute:
 *    rake ffi devkit:sh dkver=mingw64-32-4.5.3
 * 3) cd sandbox
 * 4) build via:
 *    i686-w64-mingw32-gcc -o link_test.exe -Ilibffi/include
 *      -Wall -O3 -g link_test.c -Llibffi/lib -lffi
 */
#include <stdio.h>

#include <winsock2.h>
#include <windows.h> 
#include <ffi.h>

int main() {printf("testing complete...\n");return 0;}
int t() { void ((*volatile p)()); p = (void ((*)()))main; return 0; }

pass-fiddle-mkmf.log

package configuration for libffi is not found
have_header: checking for ffi.h... -------------------- yes

*** mkmf:try_do ENV={"!::"=>"::\\", "!EXITCODE"=>"00000000",
"CPATH"=>"C:\\projects\\rubyinstaller-git\\sandbox\\zlib\\include;C:\\projects\\rubyinstaller-git\\sandbox\\libffi\\include;",
"DKVER"=>"tdm-32-4.5.2",
"LIBRARY_PATH"=>"C:\\projects\\rubyinstaller-git\\sandbox\\zlib\\lib;C:\\projects\\rubyinstaller-git\\sandbox\\libffi\\lib;",
"LOCAL"=>"c:\\Users\\Jon\\Documents\\RubyDev\\ruby-git", "MAKEFLAGS"=>"", "MAKELEVEL"=>"1", "MFLAGS"=>"", "MYDEPS"=>"1",
"PATH"=>"c:\\projects\\rubyinstaller-git\\sandbox\\zlib\\bin;C:\\projects\\rubyinstaller-git\\sandbox\\devkit\\bin;C:\\projects\\rubyinstaller-git\\sandbox\\devkit\\mingw\\bin;c:\\ruby192\\bin;c:\\git\\cmd;c:\\Windows\\system32;c:\\Windows;c:\\Windows\\System32\\Wbem",
"PWD"=>"c:/projects/rubyinstaller-git/sandbox/ruby19_build", "RUBYLIB"=>"-", "SESSIONNAME"=>"Console", "SHLVL"=>"1", "TERM"=>"cygwin", "_"=>"./miniruby.exe"}

"gcc -E -I../../.ext/include/i386-mingw32 -I../../../../../../Users/Jon/Documents/RubyDev/ruby-git/include -I../../../../../../Users/Jon/Documents/RubyDev/ruby-git/ext/fiddle     -O3 -g -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration  conftest.c -o conftest.i"
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <winsock2.h>
4: #include <windows.h>
5: #include <ffi.h>
/* end */

--------------------

have_library: checking for main() in -lffi... -------------------- yes

*** mkmf:try_do ENV={"!::"=>"::\\", "!EXITCODE"=>"00000000",
"CPATH"=>"C:\\projects\\rubyinstaller-git\\sandbox\\zlib\\include;C:\\projects\\rubyinstaller-git\\sandbox\\libffi\\include;",
"DKVER"=>"tdm-32-4.5.2",
"LIBRARY_PATH"=>"C:\\projects\\rubyinstaller-git\\sandbox\\zlib\\lib;C:\\projects\\rubyinstaller-git\\sandbox\\libffi\\lib;",
"LOCAL"=>"c:\\Users\\Jon\\Documents\\RubyDev\\ruby-git", "MAKEFLAGS"=>"", "MAKELEVEL"=>"1", "MFLAGS"=>"", "MYDEPS"=>"1",
"PATH"=>"c:\\projects\\rubyinstaller-git\\sandbox\\zlib\\bin;C:\\projects\\rubyinstaller-git\\sandbox\\devkit\\bin;C:\\projects\\rubyinstaller-git\\sandbox\\devkit\\mingw\\bin;c:\\ruby192\\bin;c:\\git\\cmd;c:\\Windows\\system32;c:\\Windows;c:\\Windows\\System32\\Wbem",
"PWD"=>"c:/projects/rubyinstaller-git/sandbox/ruby19_build", "RUBYLIB"=>"-", "SESSIONNAME"=>"Console", "SHLVL"=>"1", "TERM"=>"cygwin", "_"=>"./miniruby.exe"}

"gcc -o conftest -I../../.ext/include/i386-mingw32 -I../../../../../../Users/Jon/Documents/RubyDev/ruby-git/include -I../../../../../../Users/Jon/Documents/RubyDev/ruby-git/ext/fiddle     -O3 -g -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wimplicit-function-declaration conftest.c  -L. -L../.. -L.      -lmsvcrt-ruby191-static -lffi  -lshell32 -lws2_32 -limagehlp  "
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include <winsock2.h>
4: #include <windows.h>
5: 
6: /*top*/
7: int main() {return 0;}
8: int t() { void ((*volatile p)()); p = (void ((*)()))main; return 0; }
/* end */

--------------------

rbconfig.diff

diff --git a/sandbox/libffi-ok/fail-rbconfig.rb b/sandbox/libffi-ok/pass-rbconfig.rb
index 8ebbf5b..f03a28a 100644
--- a/sandbox/libffi-ok/fail-rbconfig.rb
+++ b/sandbox/libffi-ok/pass-rbconfig.rb
@@ -32,7 +32,7 @@ module RbConfig
   CONFIG["rubyhdrdir"] = "$(includedir)/$(RUBY_BASE_NAME)-$(ruby_version)"
   CONFIG["UNIVERSAL_INTS"] = ""
   CONFIG["UNIVERSAL_ARCHNAMES"] = ""
-  CONFIG["configure_args"] = " '--enable-shared' '--disable-install-doc' '--prefix=C:/projects/rubyinstaller-git/sandbox/ruby19_mingw' 'CC=i686-w64-mingw32-gcc' 'CXX=i686-w64-mingw32-g++' 'CPP=i686-w64-mingw32-cpp'"
+  CONFIG["configure_args"] = " '--enable-shared' '--disable-install-doc' '--prefix=C:/projects/rubyinstaller-git/sandbox/ruby19_mingw'"
   CONFIG["vendordir"] = "$(rubylibprefix)/vendor_ruby"
   CONFIG["sitedir"] = "$(rubylibprefix)/site_ruby"
   CONFIG["ruby_version"] = "1.9.1"
@@ -113,15 +113,15 @@ module RbConfig
   CONFIG["INSTALL_PROGRAM"] = "$(INSTALL)"
   CONFIG["SET_MAKE"] = ""
   CONFIG["LN_S"] = "cp -p"
-  CONFIG["NM"] = "i686-w64-mingw32-nm"
-  CONFIG["DLLWRAP"] = "i686-w64-mingw32-dllwrap"
-  CONFIG["WINDRES"] = "i686-w64-mingw32-windres"
-  CONFIG["OBJCOPY"] = "i686-w64-mingw32-objcopy"
-  CONFIG["OBJDUMP"] = "i686-w64-mingw32-objdump"
+  CONFIG["NM"] = "nm"
+  CONFIG["DLLWRAP"] = "dllwrap"
+  CONFIG["WINDRES"] = "windres"
+  CONFIG["OBJCOPY"] = ":"
+  CONFIG["OBJDUMP"] = "objdump"
   CONFIG["ASFLAGS"] = ""
-  CONFIG["AS"] = "i686-w64-mingw32-as"
-  CONFIG["AR"] = "i686-w64-mingw32-ar"
-  CONFIG["RANLIB"] = "i686-w64-mingw32-ranlib"
+  CONFIG["AS"] = "as"
+  CONFIG["AR"] = "ar"
+  CONFIG["RANLIB"] = "ranlib"
   CONFIG["try_header"] = ""
   CONFIG["COUTFLAG"] = "-o "
   CONFIG["OUTFLAG"] = "-o "
@@ -130,14 +130,14 @@ module RbConfig
   CONFIG["GCC"] = "yes"
   CONFIG["EGREP"] = "/usr/bin/grep -E"
   CONFIG["GREP"] = "/usr/bin/grep"
-  CONFIG["CPP"] = "i686-w64-mingw32-cpp"
+  CONFIG["CPP"] = "$(CC) -E"
   CONFIG["CXXFLAGS"] = "$(cxxflags)"
-  CONFIG["CXX"] = "i686-w64-mingw32-g++"
+  CONFIG["CXX"] = "g++"
   CONFIG["OBJEXT"] = "o"
   CONFIG["CPPFLAGS"] = " $(DEFS) $(cppflags)"
   CONFIG["LDFLAGS"] = "-L. "
   CONFIG["CFLAGS"] = "$(cflags)"
-  CONFIG["CC"] = "i686-w64-mingw32-gcc"
+  CONFIG["CC"] = "gcc"
   CONFIG["target_os"] = "mingw32"
   CONFIG["target_vendor"] = "pc"
   CONFIG["target_cpu"] = "i386"

ruby-config.diff

diff --git a/sandbox/libffi-ok/fail-ruby-config.log b/sandbox/libffi-ok/pass-ruby-config.log
index 47154cc..7035867 100644
--- a/sandbox/libffi-ok/fail-ruby-config.log
+++ b/sandbox/libffi-ok/pass-ruby-config.log
@@ -47,99 +47,122 @@ configure:2817: checking host system type
 configure:2830: result: i686-pc-mingw32
 configure:2850: checking target system type
 configure:2863: result: i686-pc-mingw32
+configure:3088: checking for gcc
+configure:3104: found /usr/mingw/bin/gcc
+configure:3115: result: gcc
 configure:3344: checking for C compiler version
-configure:3353: i686-w64-mingw32-gcc --version >&5
-i686-w64-mingw32-gcc.exe (GCC) 4.5.3 20110422 (prerelease)

+configure:3353: gcc --version >&5
+gcc.exe (tdm-1) 4.5.2

 Copyright (C) 2010 Free Software Foundation, Inc.

 This is free software; see the source for copying conditions.  There is NO

 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 

 configure:3364: $? = 0
-configure:3353: i686-w64-mingw32-gcc -v >&5
+configure:3353: gcc -v >&5
 Using built-in specs.
-COLLECT_GCC=C:\projects\rubyinstaller-git\sandbox\devkit\mingw\bin\i686-w64-mingw32-gcc.exe
-COLLECT_LTO_WRAPPER=c:/projects/rubyinstaller-git/sandbox/devkit/mingw/bin/../libexec/gcc/i686-w64-mingw32/4.5.3/lto-wrapper.exe
-Target: i686-w64-mingw32
-Configured with: ../../../build/gcc/src/configure --target=i686-w64-mingw32 --prefix=/c/bb/vista64-mingw32/mingw-x86-x86/build/build/root --with-sysroot=/c/bb/vista64-mingw32/mingw-x86-x86/build/build/root --enable-languages=all,obj-c++ --enable-fully-dynamic-string --disable-multilib
+COLLECT_GCC=C:\projects\rubyinstaller-git\sandbox\devkit\mingw\bin\gcc.exe
+COLLECT_LTO_WRAPPER=c:/projects/rubyinstaller-git/sandbox/devkit/mingw/bin/../libexec/gcc/mingw32/4.5.2/lto-wrapper.exe
+Target: mingw32
+Configured with: ../../src/gcc-4.5.2/configure --build=mingw32 --enable-languages=c,c++,ada,fortran,objc,obj-c++ --enable-threads=win32 --enable-libgomp --enable-lto --enable-fully-dynamic-string --enable-libstdcxx-debug --enable-version-specific-runtime-libs --with-gnu-ld --disable-nls --disable-win32-registry --disable-symvers --disable-werror --prefix=/mingw32tdm --with-local-prefix=/mingw32tdm --enable-cxx-flags='-fno-function-sections -fno-data-sections' --with-pkgversion=tdm-1 --enable-sjlj-exceptions --with-bugurl=http://tdm-gcc.tdragon.net/bugs
 Thread model: win32
-gcc version 4.5.3 20110422 (prerelease) (GCC) 
+gcc version 4.5.2 (tdm-1) 
 configure:3384: checking whether the C compiler works
-configure:3406: i686-w64-mingw32-gcc    conftest.c  >&5
+configure:3406: gcc    conftest.c  >&5
 configure:3410: $? = 0
 configure:3458: result: yes
 configure:3618: checking whether we are using the GNU C compiler
-configure:3637: i686-w64-mingw32-gcc -c   conftest.c >&5
+configure:3637: gcc -c   conftest.c >&5
 configure:3637: $? = 0
 configure:3646: result: yes
 configure:4711: checking for ranlib
-configure:4738: result: i686-w64-mingw32-ranlib
+configure:4727: found /usr/mingw/bin/ranlib
+configure:4738: result: ranlib
 configure:4803: checking for ar
-configure:4830: result: i686-w64-mingw32-ar
+configure:4819: found /usr/mingw/bin/ar
+configure:4830: result: ar
 configure:4941: checking for as
-configure:4968: result: i686-w64-mingw32-as
+configure:4957: found /usr/mingw/bin/as
+configure:4968: result: as
+configure:5050: checking for objdump
+configure:5066: found /usr/mingw/bin/objdump
+configure:5077: result: objdump
+configure:5150: checking for objcopy
+configure:5177: result: :
 configure:5248: checking for windres
-configure:5275: result: i686-w64-mingw32-windres
+configure:5264: found /usr/mingw/bin/windres
+configure:5275: result: windres
 configure:5340: checking for dllwrap
-configure:5367: result: i686-w64-mingw32-dllwrap
+configure:5356: found /usr/mingw/bin/dllwrap
+configure:5367: result: dllwrap
 configure:5408: checking for mingw32 runtime DLL
-configure:5425: i686-w64-mingw32-gcc -o conftest.exe -g -O2   conftest.c  >&5
+configure:5425: gcc -o conftest.exe -g -O2   conftest.c  >&5
 configure:5425: $? = 0
 configure:5436: result: msvcrt
 configure:5588: checking for nm
-configure:5615: result: i686-w64-mingw32-nm
+configure:5604: found /usr/mingw/bin/nm
+configure:5615: result: nm
@@ -28941,9 +28784,9 @@ generated by GNU Autoconf 2.67.  Invocation command line was
 
-config.status:890: creating GNUmakefile
-config.status:890: creating Makefile
-config.status:890: creating ruby-1.9.pc
+config.status:889: creating GNUmakefile
+config.status:889: creating Makefile
+config.status:889: creating ruby-1.9.pc
 
 ## ---------------- ##
 ## Cache variables. ##
@@ -28959,18 +28802,18 @@ ac_cv_c_volatile=yes
 ac_cv_cxx_compiler_gnu=yes
 ac_cv_env_CCC_set=
 ac_cv_env_CCC_value=
-ac_cv_env_CC_set=set
-ac_cv_env_CC_value=i686-w64-mingw32-gcc
+ac_cv_env_CC_set=
+ac_cv_env_CC_value=
 ac_cv_env_CFLAGS_set=
 ac_cv_env_CFLAGS_value=
 ac_cv_env_CPPFLAGS_set=
 ac_cv_env_CPPFLAGS_value=
-ac_cv_env_CPP_set=set
-ac_cv_env_CPP_value=i686-w64-mingw32-cpp
+ac_cv_env_CPP_set=
+ac_cv_env_CPP_value=
 ac_cv_env_CXXFLAGS_set=
 ac_cv_env_CXXFLAGS_value=
-ac_cv_env_CXX_set=set
-ac_cv_env_CXX_value=i686-w64-mingw32-g++
+ac_cv_env_CXX_set=
+ac_cv_env_CXX_value=
 ac_cv_env_LDFLAGS_set=
 ac_cv_env_LDFLAGS_value=
 ac_cv_env_LIBS_set=
@@ -29171,15 +29014,17 @@ ac_cv_path_EGREP='/usr/bin/grep -E'
 ac_cv_path_GREP=/usr/bin/grep
 ac_cv_path_install='/usr/bin/install -c'
 ac_cv_path_mkdir=/usr/bin/mkdir
-ac_cv_prog_CC=i686-w64-mingw32-gcc
-ac_cv_prog_CPP=i686-w64-mingw32-cpp
-ac_cv_prog_ac_ct_AR=i686-w64-mingw32-ar
-ac_cv_prog_ac_ct_AS=i686-w64-mingw32-as
-ac_cv_prog_ac_ct_DLLWRAP=i686-w64-mingw32-dllwrap
-ac_cv_prog_ac_ct_NM=i686-w64-mingw32-nm
+ac_cv_prog_CPP='gcc -E'
+ac_cv_prog_ac_ct_AR=ar
+ac_cv_prog_ac_ct_AS=as
+ac_cv_prog_ac_ct_CC=gcc
+ac_cv_prog_ac_ct_CXX=g++
+ac_cv_prog_ac_ct_DLLWRAP=dllwrap
+ac_cv_prog_ac_ct_NM=nm
 ac_cv_prog_ac_ct_OBJCOPY=:
-ac_cv_prog_ac_ct_RANLIB=i686-w64-mingw32-ranlib
-ac_cv_prog_ac_ct_WINDRES=i686-w64-mingw32-windres
+ac_cv_prog_ac_ct_OBJDUMP=objdump
+ac_cv_prog_ac_ct_RANLIB=ranlib
+ac_cv_prog_ac_ct_WINDRES=windres
 ac_cv_prog_cc_c89=
 ac_cv_prog_cc_g=yes
 ac_cv_prog_cxx_g=yes
@@ -29228,8 +29073,8 @@ ac_cv_type_pid_t=yes
 ac_cv_type_rlim_t=no
 ac_cv_type_signal=void
 ac_cv_type_size_t=yes
-ac_cv_type_struct_timespec=yes
-ac_cv_type_struct_timezone=yes
+ac_cv_type_struct_timespec=no
+ac_cv_type_struct_timezone=no
 ac_cv_type_time_t=yes
 ac_cv_type_uid_t=no
 ac_cv_var_tzname=yes
@@ -29305,17 +29150,17 @@ rb_cv_warnflags='-Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -
 ## ----------------- ##
 
 ALLOCA=''
-AR='i686-w64-mingw32-ar'
+AR='ar'
 ARCHFILE=''
 ARCH_FLAG=''
-AS='i686-w64-mingw32-as'
+AS='as'
 ASFLAGS=''
 BASERUBY='ruby'
 BUILTIN_ENCOBJS=' ascii.$(OBJEXT) us_ascii.$(OBJEXT) unicode.$(OBJEXT) utf_8.$(OBJEXT)'
 BUILTIN_TRANSOBJS=' newline.$(OBJEXT)'
 BUILTIN_TRANSSRCS=' newline.c'
 CAPITARGET='nodoc'
-CC='i686-w64-mingw32-gcc'
+CC='gcc'
 CCDLFLAGS=''
 CFLAGS='${cflags}'
 CHDIR='cd'
@@ -29324,17 +29169,17 @@ COMMON_LIBS='m'
 COMMON_MACROS=''
 COUTFLAG='-o '
 CP='cp'
-CPP='i686-w64-mingw32-cpp'
+CPP='$(CC) -E'
 CPPFLAGS=' $(DEFS) ${cppflags}'
 CPPOUTFILE='-o conftest.i'
-CXX='i686-w64-mingw32-g++'
+CXX='g++'
 CXXFLAGS='${cxxflags}'
 DEFS=''
 DLDFLAGS=' -Wl,--enable-auto-image-base,--enable-auto-import $(DEFFILE)'
 DLDLIBS=''
 DLEXT2=''
 DLEXT='so'
-DLLWRAP='i686-w64-mingw32-dllwrap'
+DLLWRAP='dllwrap'
 DOT=''
 DOXYGEN=''
 ECHO_C=''
@@ -29384,10 +29229,10 @@ MINIOBJS='dmydln.o'
 MINIRUBY='./miniruby$(EXEEXT) -I$(srcdir)/lib -I. -I$(EXTOUT)/common'
 MINOR='9'
 MKDIR_P='/usr/bin/mkdir -p'
-NM='i686-w64-mingw32-nm'
+NM='nm'
 NROFF='/bin/false'
-OBJCOPY='i686-w64-mingw32-objcopy'
-OBJDUMP='i686-w64-mingw32-objdump'
+OBJCOPY=':'
+OBJDUMP='objdump'
 OBJEXT='o'
 OUTFLAG='-o '
 PACKAGE='ruby'
@@ -29400,7 +29245,7 @@ PACKAGE_VERSION=''
 PATH_SEPARATOR=':'
 PKG_CONFIG=''
 PREP='miniruby$(EXEEXT)'
-RANLIB='i686-w64-mingw32-ranlib'
+RANLIB='ranlib'
 RDOCTARGET='nodoc'
 RI_BASE_NAME='ri'
 RM='rm -f'
@@ -29430,17 +29275,17 @@ UNIVERSAL_ARCHNAMES=''
 UNIVERSAL_INTS=''
 USE_RUBYGEMS='YES'
 WERRORFLAG='-Werror'
-WINDRES='i686-w64-mingw32-windres'
+WINDRES='windres'
 XCFLAGS='-include ruby/config.h -include ruby/missing.h -DRUBY_EXPORT'
 XLDFLAGS=' -Wl,--stack,0x00200000,--enable-auto-import'
 XRUBY='$(RUNRUBY)'
 XRUBY_LIBDIR=''
 XRUBY_RUBYHDRDIR=''
 XRUBY_RUBYLIBDIR=''
-ac_ct_CC=''
-ac_ct_CXX=''
-ac_ct_OBJCOPY=''
-ac_ct_OBJDUMP=''
+ac_ct_CC='gcc'
+ac_ct_CXX='g++'
+ac_ct_OBJCOPY=':'
+ac_ct_OBJDUMP='objdump'
 arch='i386-mingw32'
 bindir='${exec_prefix}/bin'
 build='i686-pc-mingw32'
@@ -29449,7 +29294,7 @@ build_cpu='i686'
 build_os='mingw32'
 build_vendor='pc'
 cflags=' ${optflags} ${debugflags} ${warnflags}'
-configure_args=' '\''--enable-shared'\'' '\''--disable-install-doc'\'' '\''--prefix=C:/projects/rubyinstaller-git/sandbox/ruby19_mingw'\'' '\''CC=i686-w64-mingw32-gcc'\'' '\''CXX=i686-w64-mingw32-g++'\'' '\''CPP=i686-w64-mingw32-cpp'\'''
+configure_args=' '\''--enable-shared'\'' '\''--disable-install-doc'\'' '\''--prefix=C:/projects/rubyinstaller-git/sandbox/ruby19_mingw'\'''
 cppflags=''
 cxxflags=' ${optflags} ${debugflags} ${warnflags}'
 datadir='${datarootdir}'