#9257: CC_CLANG_BACKEND not reconfigured during bindist install -------------------------------------+------------------------------------- Reporter: MtnViewMark | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Build System | Version: 7.8.2 Keywords: clang | Operating System: MacOS X Architecture: Unknown/Multiple | Type of failure: Installing GHC Difficulty: Moderate (less | failed than a day) | Test Case: Blocked By: | Blocking: Related Tickets: | -------------------------------------+------------------------------------- 1) build GHC is built on a machine with clang -- project.mk ends up with the macro CC_CLANG_BACKEND=1 2) make binary-dist on that machine 3) bring that bindist to a machine that doesn't use clang 4) unpack the bindist, ./configure, make install This error ensues: cc1: error: unrecognized command line option "-Wno-invalid-pp-token" cc1: error: unrecognized command line option "-Wno-unicode" The problem rests in that there is on gcc invocation during that make install: /usr/bin/gcc -E ... rts/package.conf.in -o rts/dist/package.conf.install.raw This call is picking up arguments from RAWCPP_FLAGS, set in mk/config.mk, based on CC_CLANG_BACKEND, set in mk/project.mk... which was computed at build time. carter has hypothesized that adding the macro FP_CC_LLVM_BACKEND to distrib/configure.ac.in might fix this. In theory that will cause the config file that is bunded into the bindist to recompute the CC_CLANG_BACKEND flag at dist config time. However, this may not work because the only file that emits CC_CLANG_BACKEND is project.mk and that doesn't seem to get re-written during dist time config. -- so something else will be needed. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/9257 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler