Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

ed1a674c ("keg: allow selective linking at the file level") had a
regression which caused the link step to skip files with the same name
as a directory in the user's CWD.

Keg#link_dir yields a relative pathname, so assumptions cannot be made
about the nature of that pathname in the block.

Instead, introduce ":skip_dir" and ":skip_file" to replace the existing
":skip" directive. This way, we won't skip things marked ":skip_dir"
when linking a file, and vice-versa.

Fixes Homebrew/homebrew#10860.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Homebrew itself is found under HOMEBREW_REPOSITORY,
which *may* be the same HOMEBREW_PREFIX, but does not have
to be if you link brew into /usr/local/bin from another location.

This reverts commit 72a477f2734939d4c5805247588c4cdea69b5383.

A version should always be set when going through the constructor
so tighten this check. Also do some style clean ups here.

GFortran chokes when it is passed CPU flags specific to Clang. This change
ensures the environment variables `FCFLAGS` and `FFLAGS` contain the same CPU
flags that would be set for the GCC compiler.

Fixes Homebrew/homebrew#10424.
Fixes Homebrew/homebrew#10744.

Closes Homebrew/homebrew#10774.

Signed-off-by: Charlie Sharpsteen <source@sharpsteen.net>

All logic has been copied into a new method `set_cpu_flags` that accepts an
additional argument, `flags`, which contains a list of environment variables
for which the CPU flags are to be adjusted.

`set_cpu_cflags` now recalls `set_cpu_flags` and passes `cflags_flags` as the
first argument.

Signed-off-by: Charlie Sharpsteen <source@sharpsteen.net>

`ENV` methods that modify environment variables, `prepend`, `append` and
`remove`, can now accept lists of flags as well as a single flag.

The list of flags affected by `append_to_cflags` and `remove_from_cflags` are
now definied in a shortcut method `cc_flag_vars`.

Signed-off-by: Charlie Sharpsteen <source@sharpsteen.net>

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Even though we now prevent linking of this file into the prefix in
Keg#link, its presence still triggers a "non-lib in lib" warning during
installation. So keep cleaning it, and leave the check in Keg#link so
things that skip_clean 'lib' still won't have it linked.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

This still isn't perfect, but it will handle hyphens in formula-names better now. A proper solution is not easy or maybe even possible unless we ban hyphens in versions AND formula names, or use a different character as a separate in downloaded cache files which we then ban from formula-name and version strings.

Refs Homebrew/homebrew#2923.

Some wrapper-tools push \r rather than \n and break the installer.

Staff is overly permissive, require user to be an  Administrator to use Homebrew.

It is fucking amazing how much shit breaks if CWD is invalid. Fucking amazing.

Also fuck you dumb user who can't figure out what "No such file or directory - getcwd" means so you force me to waste half an hour fixing it for you.

Fixes Homebrew/homebrew#6512.

I also set +r as a bunch of Homebrew will fail without that.

This reverts commit 549e7c1c2046010430849a3e92ecefb64b21a733.

This reverts commit b3d5ac0c8500006ef4fbd0bf3bd53b22a06869ab.