Hi I tried to build a native compiler for i686-cygwin from gcc-2.95.3. My cygwin directory is C:\cygwin, my source directory is d:\gcc-2.95.3 and objdir is c:\cygwin\abdul\gcc. After it started boot strapping the following error message came: ./genattr /cygdrive/d/gcc-2.95.3/gcc/config/i386/i386.md > tmp-attr.h . At file position: 175ound character Following characters are: ;; This file is part of GNU CC. ;; GNU CC is free software; you can redistribute it and/or modify ;; it under the terms of the GNU General Public License as published by ;; the Free Software FouAborting. genattr: Internal compiler error in `dump_and_abort', at /cygdrive/d/gcc-2.95.3/ gcc/rtl.c:539 Please submit a full bug report. See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions. make[2]: *** [s-attr] Error 33 make[2]: Leaving directory `/abdul/gcc/gcc' make[1]: *** [bootstrap] Error 2 make[1]: Leaving directory `/abdul/gcc/gcc' make: *** [bootstrap] Error 2 Please help me on this. Thank you.