On 07/14/2016 01:57 PM, Eric Gallager wrote:
So apparently the "-f" flag properly overwrites symlinks that point to
regular files, but I also did this in my gcc builddir:
$ mkdir isl-0.1.2.3
$ ln -s isl-0.1.2.3 isl-s
$ ln -sfv isl isl-s
isl-s/isl -> isl
$ ln -sfFv isl isl-s
isl-s/isl -> isl
$ ls -l isl-s
lrwxr-xr-x 1 root wheel 11 Jul 14 07:03 isl-s -> isl-0.1.2.3
$ unlink isl-s
$ ln -sfFv isl isl-s
isl-s -> isl
$ ls -l isl-s
lrwxr-xr-x 1 root wheel 3 Jul 14 15:51 isl-s -> isl
...it just doesn't overwrite symlinks that point to a directory.
Joys :(
AFAIK unlink may not necessarily be available on the various host
systems GCC supports (solaris, aix, hpux, etc etc).
So rather than relying on ln to remove the link, why don't we just
explicitly remove it with rm -f?
Jeff
