Mine

Using built-in specs.
COLLECT_GCC=i686-pc-mingw32-gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/i686-pc-mingw32/4.5.1/lto-wrapper
Target: i686-pc-mingw32
Configured with: ../configure --prefix=/usr --bindir=/usr/bin --includedir=/usr/include --libdir=/usr/lib64 --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --build=x86_64-redhat-linux-gnu --host=x86_64-redhat-linux-gnu --target=i686-pc-mingw32 --with-gnu-as --with-gnu-ld --verbose --without-newlib --disable-multilib --enable-libgomp --with-system-zlib --disable-nls --without-included-gettext --disable-win32-registry --enable-version-specific-runtime-libs --with-sysroot=/usr/i686-pc-mingw32/sys-root --enable-languages=c,c++,objc,obj-c++,fortran --with-bugurl=http://bugzilla.redhat.com/bugzilla
Thread model: win32
gcc version 4.5.1 20100731 (Fedora MinGW 4.5.1-1.fc15) (GCC) 
COMPILER_PATH=/usr/libexec/gcc/i686-pc-mingw32/4.5.1/:/usr/libexec/gcc/i686-pc-mingw32/4.5.1/:/usr/libexec/gcc/i686-pc-mingw32/:/usr/lib64/gcc/i686-pc-mingw32/4.5.1/:/usr/lib64/gcc/i686-pc-mingw32/:/usr/lib64/gcc/i686-pc-mingw32/4.5.1/../../../../i686-pc-mingw32/bin/
LIBRARY_PATH=/usr/lib64/gcc/i686-pc-mingw32/4.5.1/:/usr/lib64/gcc/i686-pc-mingw32/4.5.1/../../../../i686-pc-mingw32/lib/:/usr/i686-pc-mingw32/sys-root/mingw/lib/
COLLECT_GCC_OPTIONS='-v' '-Wall' '-g' '-O2' '-o' '.libs/portable-rpcgen.exe' '-mtune=generic' '-march=pentiumpro'
 /usr/libexec/gcc/i686-pc-mingw32/4.5.1/collect2 --sysroot=/usr/i686-pc-mingw32/sys-root -Bdynamic -o .libs/portable-rpcgen.exe /usr/i686-pc-mingw32/sys-root/mingw/lib/crt2.o /usr/lib64/gcc/i686-pc-mingw32/4.5.1/crtbegin.o -L/usr/lib64/gcc/i686-pc-mingw32/4.5.1 -L/usr/lib64/gcc/i686-pc-mingw32/4.5.1/../../../../i686-pc-mingw32/lib -L/usr/i686-pc-mingw32/sys-root/mingw/lib portable_rpcgen-rpcgen_parse.o portable_rpcgen-rpcgen_scan.o portable_rpcgen-rpcgen_main.o portable_rpcgen-rpcgen_ast.o portable_rpcgen-rpcgen_codegen.o -lmingw32 -lgcc_eh -lgcc -lmoldname -lmingwex -lmsvcrt -luser32 -lkernel32 -ladvapi32 -lshell32 -lmingw32 -lgcc_eh -lgcc -lmoldname -lmingwex -lmsvcrt /usr/lib64/gcc/i686-pc-mingw32/4.5.1/crtend.o
/usr/lib64/gcc/i686-pc-mingw32/4.5.1/libgcc_eh.a(unwind-sjlj.o): In function `__gthread_key_create':
/builddir/build/BUILD/gcc-4.5.1/build/i686-pc-mingw32/libgcc/../../../libgcc/../gcc/gthr-win32.h:582: undefined reference to `_TlsAlloc@0'
/builddir/build/BUILD/gcc-4.5.1/build/i686-pc-mingw32/libgcc/../../../libgcc/../gcc/gthr-win32.h:589: undefined reference to `___mingwthr_key_dtor'
/usr/lib64/gcc/i686-pc-mingw32/4.5.1/libgcc_eh.a(unwind-sjlj.o): In function `__gthread_once':
/builddir/build/BUILD/gcc-4.5.1/build/i686-pc-mingw32/libgcc/../../../libgcc/../gcc/gthr-win32.h:554: undefined reference to `_InterlockedIncrement@4'
/usr/lib64/gcc/i686-pc-mingw32/4.5.1/libgcc_eh.a(unwind-sjlj.o): In function `__gthread_setspecific':
/builddir/build/BUILD/gcc-4.5.1/build/i686-pc-mingw32/libgcc/../../../libgcc/../gcc/gthr-win32.h:621: undefined reference to `_TlsSetValue@8'
/builddir/build/BUILD/gcc-4.5.1/build/i686-pc-mingw32/libgcc/../../../libgcc/../gcc/gthr-win32.h:621: undefined reference to `_TlsSetValue@8'
/usr/lib64/gcc/i686-pc-mingw32/4.5.1/libgcc_eh.a(unwind-sjlj.o): In function `__gthread_getspecific':
/builddir/build/BUILD/gcc-4.5.1/build/i686-pc-mingw32/libgcc/../../../libgcc/../gcc/gthr-win32.h:613: undefined reference to `_SetLastError@4'
/usr/lib64/gcc/i686-pc-mingw32/4.5.1/libgcc_eh.a(unwind-sjlj.o): In function `__gthread_setspecific':
/builddir/build/BUILD/gcc-4.5.1/build/i686-pc-mingw32/libgcc/../../../libgcc/../gcc/gthr-win32.h:621: undefined reference to `_TlsSetValue@8'
/builddir/build/BUILD/gcc-4.5.1/build/i686-pc-mingw32/libgcc/../../../libgcc/../gcc/gthr-win32.h:621: undefined reference to `_TlsSetValue@8'
/usr/lib64/gcc/i686-pc-mingw32/4.5.1/libgcc_eh.a(unwind-sjlj.o): In function `__gthread_getspecific':
/builddir/build/BUILD/gcc-4.5.1/build/i686-pc-mingw32/libgcc/../../../libgcc/../gcc/gthr-win32.h:613: undefined reference to `_SetLastError@4'
/builddir/build/BUILD/gcc-4.5.1/build/i686-pc-mingw32/libgcc/../../../libgcc/../gcc/gthr-win32.h:613: undefined reference to `_SetLastError@4'
/builddir/build/BUILD/gcc-4.5.1/build/i686-pc-mingw32/libgcc/../../../libgcc/../gcc/gthr-win32.h:613: undefined reference to `_SetLastError@4'
/builddir/build/BUILD/gcc-4.5.1/build/i686-pc-mingw32/libgcc/../../../libgcc/../gcc/gthr-win32.h:613: undefined reference to `_SetLastError@4'
/builddir/build/BUILD/gcc-4.5.1/build/i686-pc-mingw32/libgcc/../../../libgcc/../gcc/gthr-win32.h:613: undefined reference to `_SetLastError@4'
collect2: ld returned 1 exit status