Quote Originally Posted by #!/bin/bash View Post
Try changing the sed command like this:
sed -e "$ac_comsub s%@configure_input@%$configure_input%g" \
-e "s%@srcdir@%$srcdir%g" -e "s%@top_srcdir@%$top_srcdir%g" \
-e "s%@INSTALL@%$INSTALL%g" $ac_file_inputs | (eval "$ac_sed_cmds") > $ac_file

If that doesn't work find out what $ac_file is and make sure you can write to it.
echo $ac_file #That should help troubleshoot
I try to install fortran95 (g95) compiler, i receveid the same error message when i run the command ./configure --prefix=<installation directory> \ --with-gcc-dir=<path of your GCC directory>