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It's important that -I is scrubbed thoroughly as we add most of our important paths with -isystem and -I is handled *first*.
NOTE this indicates we should probably have used -I rather than -isystem, but too late to test all that now.
Also scrub -L for bad-paths thoroughly (evaluate realpath).
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Amateur mistake where I forgot that the system library path is read AFTER the -L library path, so /usr/local/lib was after /opt/X11/lib and the wrong cairo was used.
This only affects CLT /usr/local installs with XQuartz installed.
Fixes Homebrew/homebrew#14639.
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It was dumb to have make call different compilers to configure depending on the `servile?` flag. This is not a route to reliability.
Instead now we set CC (formula that break if CC is set like Jack be damned, their build-systems are just plain broken and should not be supported). When cc is called we examine HOMEBREW_CC, otherwise we instantiate the tool that was called, just like the formula's build-system will expect.
Fixes Homebrew/homebrew#14659 (though the build fails later for me, with the same error for stdenv and superenv).
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Apparently LLVM can use these, so only remove if clang.
Refs Homebrew/homebrew#14569.
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Fixes Homebrew/homebrew#14626.
Also make proctools install do prefixes other than /usr/local.
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Necessary because it otherwise calls actual cc after it does whatever it does. So we force it to call our cc.
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Fixes Homebrew/homebrew#14584.
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Fixes Homebrew/homebrew#14554.
We justify doing this because pre 10.8 X11 came with GL for all Homebrew-capable systems and as such is a default that we'd prefer not to have to address.
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It's only visible if you specify -v or builds fail, so let's help people to diagnose superenv issues.
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Possibly this is not wise, but with -fopenmp -lgomp is automatically added by the toolchain, and I didn't have -lgomp.
Ideally we'd detect when this will work and then leave it in there.
/cc @sharpie @mikemcquaid @jacknagel
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serf requires you to explicitly tell it where to find the supertool because otherwise it has a hardcoded /usr/bin/apr-1-config (:P), ctail however is sensible and searches the PATH so now it's as though we do nothing special in that formula. Nice.
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superenv defaults to servile mode. In servile mode:
* If 'gcc' is called, then 'gcc' is run (we ignore HOMEBREW_CC)
* CFLAGS (optimizations) are not applied
* ARGV is not mangled (TODO though we should apply fixes)
* -I and -L environment is still forcibly inserted.
This fixes, eg. jack which was still broken with stdenv. Jack was broken because we set CC in stdenv, and Jack has a stupid build-system. Unsetting CC allowed Jack to find and use the gcc tool it so demanded, but (previously) we would then substitute clang under its nose. The configure still failed. In servile mode (llvm-)gcc is used and Jack compiles.
In normal circumstances clang would then be inserted again during the make phase. But Jack uses the niche-wag build tool that we don't support for setting the O HOMEBREW_CCCFG flag that disables servile mode.
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This patch removes most of the settings for CC, CXX etc. because we are trying to be minimal. Then we force the compiler to Homebrew's choice underneath in superenv. We however leave LD because we prefer that build-systems use the c-compiler for linking, it generally works better (copiously tested), however when the build-system explicitly calls ld, we respect that. This gets around the ocaml bug in question, since somehow clang was crashing during link, but the ld tool itself (which is kind of clang, kind of llvm-gcc) is okay with this.
Also moved the setting of O (so that cc-args are refurbished) into a make wrapper. Not sure if this matter much, but seems more consistent.
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Some people do insane things and are then surprised things break.
Fixes Homebrew/homebrew#14546.
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Finishes fixing qrupdate. And maybe others.
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The problem here now is though that the warnings only appear when compiling verbosely. But they should thus be visible if the build fails. Or if people are hunting for problems.
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Since we remove some CFLAGS under their noses, this would otherwise be quite confusing.
Notably, this will now trigger in numerous formula. Sucks.
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Fixes Mountain Lion specific sed issue.
Provided scripts don't use the full-path to see we are fine. They never do though, that would assume too much.
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1. A minimal build environment, we don't set CFLAGS, CPPFLAGS, LDFLAGS, etc. the rationale being, the less that is set, the less variables we are introducing that can break builds.
2. A set of scripts that replace cc, ld, etc. and inject the -I, -L, etc. flags we need into the args passed to the build-tools.
Because we now have complete control over compiler instantiations we do a variety of clean-up tasks, like removing bad flags, enforcing universal builds and ensuring makefiles don't try to change the order of library and include paths from ones that work to ones that don't.
The previous ENV-system is still available when --env=std is specified.
superenv applies to Xcode >= 4.3 only currently.
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