brew install -v collectd (with Clang 3.1Xcode 4.3.2)

gistfile1.txt

==> Downloading http://collectd.org/files/collectd-5.0.2.tar.bz2
Already downloaded: /Users/toby/Library/Caches/Homebrew/collectd-5.0.2.tar.bz2
/usr/bin/tar xf /Users/toby/Library/Caches/Homebrew/collectd-5.0.2.tar.bz2
==> ./configure --disable-debug --disable-dependency-tracking -C --with-python=/usr/bin --prefix=/usr/local/Cellar/collectd/5.0.2 --localstatedir=/usr/local/var
./configure --disable-debug --disable-dependency-tracking -C --with-python=/usr/bin --prefix=/usr/local/Cellar/collectd/5.0.2 --localstatedir=/usr/local/var
configure: creating cache config.cache
checking build system type... x86_64-apple-darwin11.3.0
checking host system type... x86_64-apple-darwin11.3.0
checking for gcc... /usr/bin/clang
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
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checking for /usr/bin/clang option to accept ISO C89... none needed
checking for a sed that does not truncate output... /usr/bin/sed
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for fgrep... /usr/bin/grep -F
checking for ld used by /usr/bin/clang... /usr/bin/clang
checking if the linker (/usr/bin/clang) is GNU ld... no
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm
checking the name lister (/usr/bin/nm) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 196608
checking whether the shell understands some XSI constructs... yes
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checking how to recognize dependent libraries... pass_all
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checking if /usr/bin/clang supports -fno-rtti -fno-exceptions... yes
checking for /usr/bin/clang option to produce PIC... -fno-common -DPIC
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checking if /usr/bin/clang static flag -static works... no
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checking if /usr/bin/clang supports -c -o file.o... (cached) yes
checking whether the /usr/bin/clang linker (/usr/bin/clang) supports shared libraries... yes
checking dynamic linker characteristics... darwin11.3.0 dyld
checking how to hardcode library paths into programs... immediate
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checking which extension is used for runtime loadable modules... .so
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configure: WARNING: cannot find clock_gettime
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configure: updating cache config.cache
configure: creating ./config.status
config.status: creating src/libcollectdclient/lcc_features.h
config.status: creating Makefile
config.status: creating src/Makefile
config.status: creating src/collectd.conf
config.status: creating src/owniptc/Makefile
config.status: creating src/libcollectdclient/Makefile
config.status: creating src/libcollectdclient/libcollectdclient.pc
config.status: creating src/liboconfig/Makefile
config.status: creating bindings/Makefile
config.status: creating bindings/java/Makefile
config.status: creating src/config.h
config.status: executing libtool commands
config.status: executing depfiles commands
=== configuring in libltdl (/private/tmp/homebrew-collectd-5.0.2-WJuH/collectd-5.0.2/libltdl)
configure: running /bin/sh ./configure --disable-option-checking '--prefix=/usr/local/Cellar/collectd/5.0.2'  '--disable-debug' '--disable-dependency-tracking' '--with-python=/usr/bin' '--localstatedir=/usr/local/var' 'CC=/usr/bin/clang' 'CFLAGS=-Os -w -pipe -march=native -Qunused-arguments' --cache-file=../config.cache --srcdir=.
configure: loading cache ../config.cache
checking for a BSD-compatible install... (cached) /usr/local/bin/ginstall -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... (cached) /usr/local/bin/mkdir -p
checking for gawk... (cached) awk
checking whether make sets $(MAKE)... (cached) yes
checking build system type... (cached) x86_64-apple-darwin11.3.0
checking host system type... (cached) x86_64-apple-darwin11.3.0
checking for style of include used by make... GNU
checking for gcc... (cached) /usr/bin/clang
checking whether the C compiler works... no
configure: error: in `/private/tmp/homebrew-collectd-5.0.2-WJuH/collectd-5.0.2/libltdl':
configure: error: C compiler cannot create executables
See `config.log' for more details.
configure: error: ./configure failed for libltdl
==> Exit Status: 77
https://github.com/mxcl/master/blob/master/Library/Formula/collectd.rb#L20
==> Build Environment
CPU: quad-core 64-bit sandybridge
MacOS: 10.7.3-x86_64
Xcode: 4.3.2
CC: /usr/bin/clang
CXX: /usr/bin/clang++ => /usr/bin/clang
LD: /usr/bin/clang
CFLAGS: -Os -w -pipe -march=native -Qunused-arguments
CXXFLAGS: -Os -w -pipe -march=native -Qunused-arguments
MAKEFLAGS: -j4
Error: Failed executing: ./configure --disable-debug --disable-dependency-tracking -C --with-python=/usr/bin --prefix=/usr/local/Cellar/collectd/5.0.2 --localstatedir=/usr/local/var (collectd.rb:20)
These existing issues may help you:
    https://github.com/mxcl/homebrew/issues/11651
    https://github.com/mxcl/homebrew/issues/11652
Otherwise, please report the bug:
    https://github.com/mxcl/homebrew/wiki/reporting-bugs
We saved the configure log, please gist it if you report the issue:
    ~/Library/Logs/Homebrew/config.log