Add an extension for accessing Git-related meta data that can be mixed
in into a Pathname object (e.g. `HOMBREW_REPOSITORY` or the path of a
`Tap` instance). The goal here is to eliminate code duplication.

Remove an exact duplicate from further up in the same file. (It was
accidentally added in 8a582f2b.)

Closes https://github.com/Homebrew/homebrew-core/issues/2758

Beta versions of XQuartz have address sanitization enabled, which
breaks some software at runtime, including wine.

Closes Homebrew/homebrew-core#2481.

Closes #459.

Signed-off-by: Misty De Meo <mistydemeo@github.com>

Add SharedEnvExtension#gcc_with_cxx11_support? to centralise the
logic for checking whether a compiler is known to support C++11.

Update logic to accept GCC 4.8 and above (including 6). Thereby also
address oversight in #163 where support for GCC 6 was added without
updating the C++11 compiler whitelist.

Add tests for Superenv#cxx11.

Closes #346.

They may not but it's nice to be a bit more explicit.

Affects only legacy systems that don't have a `/usr/bin/cc` binary.

At this point it's never a good compiler to use so let's just remove it.

Closes #239.

The fix changes behavior in same cases, but those cases were all either
broken or showed unexpected behavior. The new behavior is very simple:

- If an argument starts with `--<option-name>=`, return whatever comes
  after the equals sign.

Prior to this change, `ARGV.value` showed some unexpected behavior:

- `ARGV.value("foo")` returned `nil` for `--foo=` because at least one
  character needed to be present after the equals sign. (All other
  option parser implementations I'm aware of allow for empty values.)

- `ARGV.value("bar")` returned `"baz"` for `--foo=--bar=baz` because the
  regular expression was not anchored to the start of the argument.

- `ARGV.value("++")` raised an exception because the string wasn't
  escaped for use in the regular expression. (An unlikely corner case.)

Closes #231.

Signed-off-by: Martin Afanasjew <martin@afanasjew.de>

CPU was transformed into a class in 8d995e96.

Closes #168.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Setting -mcpu and -mtune on Tiger with gcc-4.2 exposes a bug in one of the
system headers, causing certain builds to fail. This can be fixed by
adding -faltivec to CFLAGS.

See: http://trac.macports.org/ticket/34213

The new stage() signature introduced by #66 breaks back-compatibility
under Ruby 1.8.7. This fixes it by switching back to a one-argument
block signature and using a new class to wrap both the Resource and
Mktemp info for the staging context, in a signature-back-compatible
way.

Addresses homebrew/homebrew-core#529.

Closes #135.

Signed-off-by: Andrew Janke <andrew@apjanke.net>

Also enables sandbox for --interactive and --debug use of install
and test, using automatic retention.

Closes #66.

Signed-off-by: Andrew Janke <andrew@apjanke.net>

Also remove related helper method `Homebrew.help_s`.

Old logic doesn't include revision. This fixes that, and passes the
whole formula prefix path to avoid duplicating the path-construction
logic.

Closes #80.

Signed-off-by: Andrew Janke <andrew@apjanke.net>

Fixes build error in Homebrew/homebrew-core#100.

Closes #63.

Signed-off-by: Andrew Janke <andrew@apjanke.net>

test-bot: revise Step output transcoding and XML character filtering

We need to move the Snow Leopard fix down since Etc.getgrgid can't
handle a string.

Closes #31.

Signed-off-by: ilovezfs <ilovezfs@icloud.com>

Previously, superenv did not try to filter -I or -L flags
based on the list of requested dependencies; as a result, buildsystems
which opportunistically discover Homebrew-installed libraries were able
to link against them even under superenv.

This adds a list of all requested dependencies to the superenv environment,
and compares all -I and -L flags against those; any Cellar and opt paths
found which resolve to unrequested dependencies are filtered out.

* Count .DS_Store disk usage but not file count.
* Count symlink's own disk usage instead of ignoring it.
* Count hardlinks disk usage only once.
* Add testcase.

Closes Homebrew/homebrew#50563.

Closes Homebrew/homebrew#50566.

Signed-off-by: Xu Cheng <xucheng@me.com>

i.e. Ignoring the file's directory for version parsing.

Closes Homebrew/homebrew#50568.

Signed-off-by: Xu Cheng <xucheng@me.com>