FixesHomebrew/homebrew#10559.
Also added missing deps for osm2pgsql.
Removed some ACLOCAL_FLAGS stuff as in theory this is not set in ENV.rb. Would like to see if it causes trouble. Should just work now.
Not sure how I failed so badly at logic. This should be rewritten so that the build info has a tested MacOS version too. However it seems unlikely that the same LLVM versions on different platforms would have different compile errors. So we'll risk it, and it'll be informative for us too.
* Use new "url" features
* Use keg_only DSL
* Use "skip_clean :all" DSL
* Whitespace and style cleanups
* Make bash invocations less silly
* Use new man2-man8 helpers
* Remove "FileUtils." since it is included in Formula
* Use real names for deps instead of aliases
* ENV.x11 now updates path, so remove that from individual brews
Replaced ENV.gcc_4_2 + comments with calls to "fails_with_llvm",
to specifically message to the user when a formula is known or suspected
to not build with LLVM. If the user specifies "--use-llvm", the message
will be displayed, but compilation will be tried anyway.
Since using LLVM is now an advanced/hidden feature instead of the
default on 10.6, we'll let the user try anyway (and submit patches
if things are now working.)
brewkit.rb changes ENV destructively, so lets not do that everytime a formula
is required. Now it's possible for other tools to require a formula
description without worrying about side-effects.
