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POchecking whether the C compiler works... no
 

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    <p>I recently uninstalled Xcode 4.2 and re-installed Xcode 4.3.1. Installed <code>Command Line Tools</code> also. The error says 'C compiler doesn't work`. On searching for this error, it said that it happens when Xcode is not installed. What am I missing?</p> <pre><code>rvm install 1.9.3 --with-gcc=clang Installing Ruby from source to: /Users/ava/.rvm/rubies/ruby-1.9.3-preview1, this may take a while depending on your cpu(s)... ruby-1.9.3-preview1 - #fetching ruby-1.9.3-preview1 - #extracting ruby-1.9.3-preview1 to /Users/ava/.rvm/src/ruby-1.9.3-preview1 ruby-1.9.3-preview1 - #extracted to /Users/ava/.rvm/src/ruby-1.9.3-preview1 Fetching yaml-0.1.4.tar.gz to /Users/ava/.rvm/archives Extracting yaml-0.1.4.tar.gz to /Users/ava/.rvm/src Configuring yaml in /Users/ava/.rvm/src/yaml-0.1.4. ERROR: Error running ' ./configure --prefix="/Users/ava/.rvm/usr" --with-gcc=clang --build=x86_64-apple-darwin11.3.0 --host=x86_64-apple-darwin11.3.0 --build=x86_64-apple-darwin11.3.0 --host=x86_64-apple-darwin11.3.0 ', please read /Users/ava/.rvm/log/ruby-1.9.3-preview1/yaml/configure.log Compiling yaml in /Users/ava/.rvm/src/yaml-0.1.4. ERROR: Error running '/usr/bin/make ', please read /Users/ava/.rvm/log/ruby-1.9.3-preview1/yaml/make.log Installing yaml to /Users/ava/.rvm/usr ERROR: Error running '/usr/bin/make install', please read /Users/ava/.rvm/log/ruby-1.9.3-preview1/yaml/make.install.log ruby-1.9.3-preview1 - #configuring ERROR: Error running ' ./configure --prefix=/Users/ava/.rvm/rubies/ruby-1.9.3-preview1 --enable-shared --disable-install-doc --with-gcc=clang --build=x86_64-apple-darwin11.3.0 --host=x86_64-apple-darwin11.3.0 --build=x86_64-apple-darwin11.3.0 --host=x86_64-apple-darwin11.3.0 --with-libyaml-dir=/Users/ava/.rvm/usr ', please read /Users/ava/.rvm/log/ruby-1.9.3-preview1/configure.log ERROR: There has been an error while running configure. Halting the installation. ➜ yaml git:(master) ✗ vi configure.log [2012-03-18 21:03:00] ./configure --prefix="/Users/ava/.rvm/usr" --with-gcc=clang --build=x86_64-apple-darwin11.3.0 --host=x86_64-apple-darwin11.3.0 --build=x86_64-apple-darwin11.3.0 --host=x86_64-apple-darwin11.3.0 configure: WARNING: unrecognized options: --with-gcc checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... config/install-sh -c -d checking for gawk... no checking for mawk... no checking for nawk... no checking for awk... awk checking whether make sets $(MAKE)... yes checking for x86_64-apple-darwin11.3.0-gcc... no checking for gcc... gcc checking whether the C compiler works... no configure: error: in `/Users/ava/.rvm/src/yaml-0.1.4': configure: error: C compiler cannot create executables See `config.log' for more details ➜ ~ git:(master) ✗ gcc -v Using built-in specs. Target: i686-apple-darwin11 Configured with: /private/var/tmp/llvmgcc42/llvmgcc42-2336.9~22/src/configure --disable-checking --enable-werror --prefix=/Applications/Xcode.app/Contents/Developer/usr/llvm-gcc-4.2 --mandir=/share/man --enable-languages=c,objc,c++,obj-c++ --program-prefix=llvm- --program-transform-name=/^[cg][^.-]*$/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) ➜ ~ git:(master) ✗ which gcc /usr/bin/gcc </code></pre>
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    1. COCan you simply pass `CC=clang` as an environment variable on the command line to `configure` or whatever invokes it?
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      1. POchecking whether the C compiler works... no
      1. USBrett Hale
    2. COyou mean like this on Terminal? `➜ ~ git:(master) ✗ CC=clang ➜ ~ git:(master) ✗ `
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      1. USAva
 

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