cmd/cgo: problem with clang on os x

[rsc]

---------- Forwarded message ----------
From: james4k <sslice@gmail.com>
Date: Mon, Aug 12, 2013 at 5:30 PM
Subject: [golang-dev] cgo and guessKind() on darwin (10.8)
To: golang-dev@googlegroups.com


Hello,

On tip I am receiving a cgo error on the package github.com/go-gl/gl, while it works
fine on 1.1; the output is "gcc produced no output". This error comes from the
guessKind() method in src/cmd/cgo/gcc.go and appears to have started when clang was made
the default CC for darwin. Testing this with CC=gcc seems to confirm this (builds
successfully). I have not tested this with any other versions of clang or on linux, but
it looks like guessKind() is a very GCC specific routine that will need to be adapted to
support other compilers like clang, but I have limited knowledge on this.

Not sure whether or not to submit an actual issue as non-gcc support seemed to be a work
in progress, but posted here for your awareness.

$ clang -v
Apple LLVM version 4.2 (clang-425.0.28) (based on LLVM 3.2svn)
Target: x86_64-apple-darwin12.4.0
Thread model: posix

[ianlancetaylor]

Comment 1:

Status changed to Duplicate.

Merged into issue #6128.