[PATCH] Fix ld-cdtest if CFLAGS contains -fexceptions

[Nick Clifton]

Hi Jakub,

> We compile most of the packages with -fexceptions these days,
> but this breaks ld-cdtest.  Although it adds -fno-exceptions to cc
> in ld_compile, ld_compile then appends $CFLAGS and therefore -fexceptions
> comes after -fno-exceptions and wins.
> The following patch fixes that by adding full path of libsupc++.a to the
> command line if it exists.

Surely this is the wrong solution.  Surely ld_compile ought to prepend 
$CFLAGS rather than append it, so that the individual linker tests can 
override command line switches like -fexceptions.

ie if the cdtest.exp wants to use -fno-exceptions then it should be 
allowed to and we should not be trying to work around this by restoring 
the exception handling library to the linker command line.

Cheers
    Nick