I have had problems on one machine to upgrade Git from Homebrew. Let me first tell you how to fix the problem and then what homebrew is about.
The problem appeared when I tried to upgrade git
brew upgrade git
It turned out to be much more complicated than I anticipated to find the problem. The exact error message was:
Error: Failed executing: make prefix=/usr/local/Cellar/git/188.8.131.52 CC=/usr/bin/clang CFLAGS=-Os\ -w\ -pipe\ -march=native\ -Qunused-arguments\ -mmacosx-version-min=10.7 LDFLAGS=-L/usr/local/lib install (git.rb:49) These existing issues may help you: https://github.com/mxcl/homebrew/issues/8643 https://github.com/mxcl/homebrew/issues/10544 https://github.com/mxcl/homebrew/issues/11481 https://github.com/mxcl/homebrew/issues/12344 https://github.com/mxcl/homebrew/issues/12814 https://github.com/mxcl/homebrew/issues/13850 Otherwise, this may help you fix or report the issue: https://github.com/mxcl/homebrew/wiki/bug-fixing-checklist
My environment was listed as:
==> Build Environment HOMEBREW_VERSION: 0.9.2 HEAD: 53d5bfb44e8644eff1693b2a734f079d10b53043 CPU: dual-core 64-bit penryn OS X: 10.7.4-x86_64 Xcode: 4.3.3 CLT: 184.108.40.206.1.1249367152 X11: 2.6.4 @ /usr/X11 CC: /usr/bin/clang CXX: /usr/bin/clang++ => /usr/bin/clang LD: /usr/bin/clang CFLAGS: -Os -w -pipe -march=native -Qunused-arguments -mmacosx-version-min=10.7 CXXFLAGS: -Os -w -pipe -march=native -Qunused-arguments -mmacosx-version-min=10.7 CPPFLAGS: -isystem /usr/local/include LDFLAGS: -L/usr/local/lib MACOSX_DEPLOYMENT_TARGET: 10.7 MAKEFLAGS: -j2
And the last line before the error outputs were
/usr/bin/clang -isystem /usr/local/include -Os -w -pipe -march=native -Qunused-arguments -mmacosx-version-min=10.7 -I. -DUSE_ST_TIMESPEC -DNO_GETTEXT -DHAVE_DEV_TTY -DXDL_FAST_HASH -DSHA1_HEADER='<openssl/sha.h>' -DNO_MEMMEM -DSHELL_PATH='"/bin/sh"' -o git-daemon -L/usr/local/lib daemon.o libgit.a xdiff/lib.a -lz -liconv -lcrypto -lssl Undefined symbols for architecture x86_64: "_iconv_open", referenced from: Undefined symbols for architecture x86_64: "_iconv_open", referenced from: _reencode_string in libgit.a(utf8.o) _reencode_string in libgit.a(utf8.o) "_iconv", referenced from: "_iconv", referenced from: _reencode_string in libgit.a(utf8.o) _reencode_string in libgit.a(utf8.o) "_iconv_close", referenced from: "_iconv_close", referenced from: _reencode_string in libgit.a(utf8.o) _reencode_string in libgit.a(utf8.o) ld: symbol(s) not found for architecture x86_64 ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) clang: error: linker command failed with exit code 1 (use -v to see invocation) make: *** [git-daemon] Error 1 make: *** Waiting for unfinished jobs.... make: *** [git-credential-store] Error 1
It turned out that libiconv was the culprit. Simply uninstall it:
brew remove libiconv brew prune brew cleanup
brew upgrade git again and things should work now.
I found the inspiration here.
What is homebrew anyways
Homebrew is a very easy to use and maintain package manager for Mac OS X environments. Anytime you want to install one of those unix-y tools, Homebrew is your friend.
Passed the initial installation, Homebrew is as simple to use as
brew install *something*
and you are good to go. Keeping versions up-to-date are very easy too
# update brew itself brew update # update tools installed with brew brew upgrade
For example here are a few things I have installed and maintain with Homebrew (aka brew for the friends).
That also includes some Java tools:
Homebrew does not install as a privileged user - it is actually discouraged. That makes it a bit picky when permissions are not right.
I have been using this trick quite regularly with success.
ruby -e "$(curl -fsSL https://gist.github.com/raw/768518/fix_homebrew.rb)"