Working around default-names removal

[nicolasnoble]

So I've been trying to create a formula for building a mips gcc cross compiler for brew, and I'm blocked due to the removal of default-names.

Building gcc requires gnu sed being called sed, but then my formula that's trying to use depends_on "gnu-sed" => "default-names" isn't working.

Long story short, my build fails constantly, and I have no idea how to solve it given how I need sed to be gsed at build time given how default-names is no longer a thing.

Current work in progress for this effort:

grumpycoders/pcsx-redux#314

Current more global bugs that are likely never going to be solved, describing why it requires sed to be gnu sed, and why I really need "sed" to be "gsed" in my formula:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62097
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66032
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235293

[carlocab]

From brew info gnu-sed:

==> Caveats
GNU "sed" has been installed as "gsed".
If you need to use it as "sed", you can add a "gnubin" directory
to your PATH from your bashrc like:

    PATH="/usr/local/opt/gnu-sed/libexec/gnubin:$PATH"

Why don't you add this to your PATH at build time?

[nicolasnoble]

How do I safely access this path? Is the prefix available somewhere as a variable?

[carlocab]

You can try putting this into the install block

ENV.prepend_path "PATH" Formula["gnu-sed"].opt_libexec/"gnubin"

[nicolasnoble]

Thanks, this worked. Would've been nice if this was suggested in the deprecation notice of default-names :-)

[carlocab]

Seems like a rare enough occurrence to not really need it... also, did setting the environment variable SED=[/usr/local/bin/]gsed not work for you?

[nicolasnoble]

gcc's build script seemed to ignore it for some reason.