configuring for rxvt 2.7.10 checking for gcc... gcc checking whether the C compiler works... yes checking for C compiler default output file name... a.exe checking for suffix of executables... .exe checking whether we are cross compiling... no checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ISO C89... none needed checking how to run the C preprocessor... gcc -E checking for a BSD-compatible install... /usr/bin/install -c checking for gawk... gawk checking for grep that handles long lines and -e... /usr/bin/grep checking for egrep... /usr/bin/grep -E checking for ANSI C header files... yes checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking minix/config.h usability... no checking minix/config.h presence... no checking for minix/config.h... no checking whether it is safe to define __EXTENSIONS__... yes checking for library containing strerror... none required checking build system type... autoconf/config.guess: line 4: $'\r': command not found autoconf/config.guess: line 6: $'\r': command not found autoconf/config.guess: line 33: $'\r': command not found autoconf/config.guess: line 34: $'\r': command not found autoconf/config.guess: line 36: $'\r': command not found autoconf/config.guess: line 48: $'\r': command not found autoconf/config.guess: line 57: $'\r': command not found autoconf/config.guess: line 60: $'\r': command not found autoconf/config.guess: line 63: syntax error near unexpected token `$'in\r'' autoconf/config.guess: line 63: ` case $1 in ' configure: error: cannot guess build type; you must specify one