Issue
As far as I remember some older gcc versions don't support the @file option. I am not very sure. Could someone give any pointers related to this?
For reference
@file
Read command-line options from file. The options read are inserted
in place of the original @file option. If file does not exist, or
cannot be read, then the option will be treated literally, and not
removed.
Options in file are separated by whitespace. A whitespace
character may be included in an option by surrounding the entire
option in either single or double quotes. Any character (including
a backslash) may be included by prefixing the character to be
included with a backslash. The file may itself contain additional
@file options; any such options will be processed recursively.
Thanks
Solution
This was committed to gcc source here:
2005-11-23 Mark Mitchell <[email protected]>
* doc/invoke.texi: For man pages, include gcc-vers.texi.
List @file in the option summary. Include the libiberty
documentation for @file.
* gcc.c (main): Call expandargv.
* Makefile.in (gcc-vers.texi): Define srcdir.
According to release history, this should have made it into GCC 4.1
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