id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc	difficulty	ghcversion	platform
896	cabal install cabal-install fails if gcc not in /Developer/usr/bin/gcc	jeremyw.sherman		"Under Mac OS X, `cabal` assumes `gcc` is at `/Developer/usr/bin/gcc`. This fails when Xcode is installed to another directory. Xcode has supported installing to an arbitrary folder since at least Xcode 3.x. This is particularly common among iOS developers, as they frequently require multiple parallel Xcode installs.

Since Xcode installs gcc to both `$DEVELOPER/usr/bin/gcc` and `/usr/bin/gcc`, this could be fixed by using `/usr/bin/gcc` directly or the result of a search in `$PATH` for `gcc`.

The user workaround for now is to symlink `/Xcode_4_2` (or whatever the user's latest Xcode install directory is) to `/Developer`.

(Apple is moving from `gcc` to `clang`, anyway. Apple's `gcc` has been frozen at an ancient version for some time now.)

Sample session exhibiting this bug:
{{{
$ cabal install cabal-install
Resolving dependencies...
Configuring cabal-install-0.10.2...
ghc: could not execute: /Developer/usr/bin/gcc
cabal: Error: some packages failed to install:
cabal-install-0.10.2 failed during the configure step. The exception was:
ExitFailure 1
$ cabal --version
cabal-install version 0.8.0
using version 1.8.0.2 of the Cabal library
$ which gcc
/usr/bin/gcc
$ which clang
/usr/bin/clang
$ ls -l `which gcc`
lrwxr-xr-x  1 root  wheel  12 13 Okt 15:37 /usr/bin/gcc@ -> llvm-gcc-4.2
$ ls -l `which clang`
-rwxrwxr-x  1 root  admin  41251344 27 Aug 03:53 /usr/bin/clang*
$ ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.0.3
}}}"	defect	closed	normal	cabal-install-0.14	cabal-install tool	1.8.0.2	normal	invalid			unknown		Mac OS