#8497: clang/wrapper cannot build GHC head with integer-gmp on Mavericks ----------------------------------------+---------------------------------- Reporter: kazu-yamamoto | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.7 Resolution: | Keywords: clang Operating System: MacOS X | Architecture: Type of failure: Building GHC failed | Unknown/Multiple Test Case: | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: ----------------------------------------+---------------------------------- Comment (by kazu-yamamoto): OK. I understand the source of this problem. On Mavericks, "/usr/bin/gcc" is a wrapper for clang: {{{ % /usr/bin/gcc --version Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1 Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn) Target: x86_64-apple-darwin13.0.0 Thread model: posix }}} With this gcc, "libraries/integer-gmp/gmp/gmpbuild/configure" fails. If we can pass CC=clang to this configure, it works. To prove this, I modified "libraries/integer-gmp/gmp/ghc.mk" to hard-code "CC=clang". With this hack, I can build GHC head with integer-gmp on Mavericks. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8497#comment:7 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler