Open Radar

 
26-Jul-2012 06:27 PM Matt Day:
Summary:
The day Xcode 4.4 was released, I updated my installation of Xcode 4.3 on my Macbook running OSX 10.7.4.

After updating Xcode using the Mac App Store, I noticed (by running "gcc -v") that my Command Line Tools had not been updated. So I ran Xcode and entered Preferences>Downloads and clicked the "Check and Install Now" button, but it reported "No updates available". The Command Line Tools had an Install button, so I clicked that, expecting it to install the latest CLT. However, after reinstalling the CLT this way, "gcc -v" still reported the old version number (LLVM build 2336.9.00).

The next day, on my Mac Pro, I updated my Xcode in the same way. This time, Preferences>Downloads showed an Update button for Command Line Tools, and it worked fine -- gcc -v reported the new version number (LLVM build 2336.11.00) and all is well. So I ran Xcode on my Macbook and it still reported "No updates available", and clicking Install for Command Line Tools still failed to update my CLT.

After some investigation I found that despite the last modified timestamp on my Macbook's /usr/llvm-gcc-4.2/bin/llvm-gcc-4.2 being updated, the executable still reports the old version number.

But, /Applications/Xcode.app/Contents/Developer/usr/llvm-gcc-4.2/bin/llvm-gcc-4.2 reports the NEW version number, and is a different executable than the version in /usr/llvm-gcc-4.2/bin.

I also found that /usr/bin/ld reports an old version number (Apple Clang 3.1 (build 318.0.61)), while /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld reports a new version number (Apple Clang 4.0 (build 421.0.57)).

So, the Command Line Tools files in /usr/bin and /usr/llvm-gcc-4.2 are apparently not being updated, despite newer versions of the executables residing in /Applications/Xcode.app. I don't know why.

Steps to Reproduce:
1. Update Xcode to version 4.4
2. Run Xcode
3. Select Preferences > Downloads
4. Select "Check and Install Now"

Expected Results:
I expect the Command Line Tools installed in /usr/bin and /usr/llvm-gcc-4.2 to report version numbers corresponding with the Xcode 4.4 release:

$ /usr/bin/ld -v
@(#)PROGRAM:ld  PROJECT:ld64-133.3
configured to support archs: armv6 armv7 i386 x86_64
LTO support using: LLVM version 3.1svn, from Apple Clang 4.0 (build 421.0.57)

$ /usr/bin/gcc -v
Using built-in specs.
Target: i686-apple-darwin11
Configured with: /private/var/tmp/llvmgcc42/llvmgcc42-2336.11~28/src/configure --disable-checking --enable-werror --prefix=/Applications/Xcode.app/Contents/Developer/usr/llvm-gcc-4.2 --mandir=/share/man --enable-languages=c,objc,c++,obj-c++ --program-prefix=llvm- --program-transform-name=/^[cg][^.-]*$/s/$/-4.2/ --with-slibdir=/usr/lib --build=i686-apple-darwin11 --enable-llvm=/private/var/tmp/llvmgcc42/llvmgcc42-2336.11~28/dst-llvmCore/Developer/usr/local --program-prefix=i686-apple-darwin11- --host=x86_64-apple-darwin11 --target=i686-apple-darwin11 --with-gxx-include-dir=/usr/include/c++/4.2.1
Thread model: posix
gcc version 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)

Actual Results:
Command Line Tools installed in /usr/bin and /usr/llvm-gcc-4.2 report old version numbers:

$ /usr/bin/ld -v
@(#)PROGRAM:ld  PROJECT:ld64-128.2
llvm version 3.1svn, from Apple Clang 3.1 (build 318.0.61)

$ /usr/bin/gcc -v
Using built-in specs.
Target: i686-apple-darwin11
Configured with: /private/var/tmp/llvmgcc42/llvmgcc42-2336.9~22/src/configure --disable-checking --enable-werror --prefix=/Applications/Xcode.app/Contents/Developer/usr/llvm-gcc-4.2 --mandir=/share/man --enable-languages=c,objc,c++,obj-c++ --program-prefix=llvm- --program-transform-name=/^[cg][^.-]*$/s/$/-4.2/ --with-slibdir=/usr/lib --build=i686-apple-darwin11 --enable-llvm=/private/var/tmp/llvmgcc42/llvmgcc42-2336.9~22/dst-llvmCore/Developer/usr/local --program-prefix=i686-apple-darwin11- --host=x86_64-apple-darwin11 --target=i686-apple-darwin11 --with-gxx-include-dir=/usr/include/c++/4.2.1
Thread model: posix
gcc version 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.9.00)

Regression:

Notes:
Other people have noticed this (or similar) issues and some discussion can be found here:
https://github.com/mxcl/homebrew/issues/13591

At least one person has reported that the problem can be worked around manually by installing the latest Command Line Tools found at https://developer.apple.com/downloads/