C:\workspace\hello1>gcc -I"C:\mingw-w64-bin_i686-mingw_20111220\mingw\include" -o sayhi.exe main.c sayhi.c
gcc: fatal error: -fuse-linker-plugin, but liblto_plugin-0.dll not found compilation terminated.


C:\workspace\hello1>dir C:\mingw-w64-bin_i686-mingw_20111220\libexec\gcc\x86_64-w64-mingw32\4.7.0\liblto_plugin-0.dll
...
01/13/2012  05:46 PM           272,300 liblto_plugin-0.dll


C:\workspace\hello1>echo %PATH%
C:\Windows\system32;...;C:\mingw-w64-bin_i686-mingw_20111220\x86_64-w64-mingw32\bin;C:\make-3.82.90-20111115\bin_amd64;C:\gnuwin32\bin;C:\mingw-w64-bin_i686-mingw_20111220\libexec\gcc\x86_64-w64-mingw32\4.7.0