Re: GCC_DRIVER_HOST_INITIALIZATION in gcc.c

[Jim Wilson <wilson at specifixinc dot com>]

Graeme Peterson wrote:
> I am trying to use the same mechanism as is found in
> gcc/config/i386/xm-djgpp.h, where GCC_DRIVER_HOST_INITIALIZATION and
> UPDATE_PATH_HOST_CANONICALIZE are defined for the purpose of expanding an
> env var that represents a path:

This stuff looks ugly and obsolete.  The variables like 
standard_startfile_prefix really look like they should be const, and it 
is very unobvious that someone might want to modify them in these 
macros.  I'd suggest looking for a cleaner solution.  Perhaps you can 
call add_prefix instead?  You might have to add another priority level 
for this to work.  Maybe you can use existing environment variables like 
GCC_EXEC_PREFIX?  Or maybe you can add another variable 
standard_startfile_prefix_0 which can be set by the host to override the 
other ones?
--
Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com