#16368: Boot GHC's libffi installation path leaks into stage1 build -------------------------------------+------------------------------------- Reporter: sgraf | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: ⊥ Component: Build System | Version: 8.6.3 (Hadrian) | Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Description changed by sgraf: Old description:
Starting yesterday, I'm having problems building GHC from a `nix-shell --pure https://github.com/alpmestan/ghc.nix/archive/master.tar.gz`.
Build comes to a halt after/while configuring the RTS, because it can't find libffi.h in a global nix store installation that I can't find anywhere in my `env`. That nix-store path certainly exists and has an installation of `libffi`, but without an include path (probably since recently, haven't had problems before).
After some debugging, I figured out that this path leaks in through `ghc- cabal` crawling through the Package DB of the host GHC. These are the libraries it finds out about this way (dumped by inserting `putStrLn (unlines (forDeps Installed.includeDirs))` in line 388 of `utils/ghc- cabal/Main.hs`:
{{{ /nix/store/7874h075nf8yikvr47642xqrwqwyv99s- ghc-8.6.3/lib/ghc-8.6.3/base-4.12.0.0/include /nix/store/5c9pfgazxid22ik3smh8zi805cp1i03y-gmp-6.1.2-dev/include /nix/store/7874h075nf8yikvr47642xqrwqwyv99s-ghc-8.6.3/lib/ghc-8.6.3 /integer-gmp-1.0.2.0/include /nix/store/7874h075nf8yikvr47642xqrwqwyv99s- ghc-8.6.3/lib/ghc-8.6.3/include /nix/store/karxq4hlfmfj0c3yk4wv5mfaz06p70k8-libffi-3.2.1/include }}}
They are then passed on to `DEP_INCLUDE_DIRS_SINGLE_QUOTED` and wreak havoc from there.
Which of these paths are vital? The `libffi` path at least seems to shadow the local tarballs for me. This concerns Hadrian and the Make- based build system.
New description: Starting yesterday, I'm having problems building GHC from a `nix-shell --pure https://github.com/alpmestan/ghc.nix/archive/master.tar.gz`. Build comes to a halt after/while configuring the RTS, because it can't find libffi.h in a global nix store installation that I can't find anywhere in my `env`. That nix-store path certainly exists and has an installation of `libffi`, but without an include path (probably since recently, haven't had problems before). After some debugging, I figured out that this path leaks in through `ghc- cabal` crawling through the Package DB of the host GHC. These are the libraries it finds out about this way (dumped by inserting `putStrLn (unlines (forDeps Installed.includeDirs))` in line 388 of `utils/ghc- cabal/Main.hs`: {{{ /nix/store/7874h075nf8yikvr47642xqrwqwyv99s- ghc-8.6.3/lib/ghc-8.6.3/base-4.12.0.0/include /nix/store/5c9pfgazxid22ik3smh8zi805cp1i03y-gmp-6.1.2-dev/include /nix/store/7874h075nf8yikvr47642xqrwqwyv99s-ghc-8.6.3/lib/ghc-8.6.3 /integer-gmp-1.0.2.0/include /nix/store/7874h075nf8yikvr47642xqrwqwyv99s- ghc-8.6.3/lib/ghc-8.6.3/include /nix/store/karxq4hlfmfj0c3yk4wv5mfaz06p70k8-libffi-3.2.1/include }}} They are then passed on to `DEP_INCLUDE_DIRS_SINGLE_QUOTED` and wreak havoc from there. Which of these paths are vital? The `libffi` path at least seems to shadow the local tarballs for me. This concerns Hadrian and the Make-based build system. For completeness, this is the error I'm eventually seeing: {{{ FFI.hsc:9:10: fatal error: ffi.h: No such file or directory compilation terminated. compiling _build/stage0/libraries/ghci/build/GHCi/FFI_hsc_make.c failed (exit code 1) command was: /nix/store/8zfm4i1aw4c3l5n6ay311ds6l8vd9983-gcc- wrapper-7.4.0/bin/cc -c _build/stage0/libraries/ghci/build/GHCi/FFI_hsc_make.c -o _build/stage0/libraries/ghci/build/GHCi/FFI_hsc_make.o -I/nix/store/891h83mar65k138156v41kzryc9ij0v3-ghc-build- environment/include -I_build/generated -I_build/stage0/libraries/ghci/build -I/nix/store/891h83mar65k138156v41kzryc9ij0v3-ghc-build- environment/include -I/nix/store/7874h075nf8yikvr47642xqrwqwyv99s- ghc-8.6.3/lib/ghc-8.6.3/unix-2.7.2.2/include -I/nix/store /7874h075nf8yikvr47642xqrwqwyv99s- ghc-8.6.3/lib/ghc-8.6.3/time-1.8.0.2/include -I/nix/store /7874h075nf8yikvr47642xqrwqwyv99s- ghc-8.6.3/lib/ghc-8.6.3/bytestring-0.10.8.2/include -I/nix/store /7874h075nf8yikvr47642xqrwqwyv99s- ghc-8.6.3/lib/ghc-8.6.3/base-4.12.0.0/include -I/nix/store /5c9pfgazxid22ik3smh8zi805cp1i03y-gmp-6.1.2-dev/include -I/nix/store /7874h075nf8yikvr47642xqrwqwyv99s-ghc-8.6.3/lib/ghc-8.6.3/integer- gmp-1.0.2.0/include -I/nix/store/7874h075nf8yikvr47642xqrwqwyv99s- ghc-8.6.3/lib/ghc-8.6.3/include -I/nix/store/karxq4hlfmfj0c3yk4wv5mfaz06p70k8-libffi-3.2.1/include -Wall -Werror=unused-but-set-variable -Wno-error=inline -include _build/stage0/libraries/ghci/build/autogen/cabal_macros.h -Dx86_64_HOST_ARCH=1 -Dlinux_HOST_OS=1 -D__GLASGOW_HASKELL__=806 }}} -- -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16368#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler