• kgardas's avatar
    workaround Solaris 11 GNU C CPP issue by using GNU C 3.4 as CPP · 2d42564a
    kgardas authored
    Summary:
    Solaris 11 distributed GNU C 4.5.x is configured in a way that its
    CPP is not working well while invoked from GHC. GHC runs it with
    -x assembler-with-cpp and in this particular configuration GNU C CPP
    does not provide any line-markers so GHC's output of errors or warnings
    is confusing since it points to preprocessed file in /tmp and not
    to the original Haskell file. Fortunately old GNU C 3.4.x is still
    provided by the OS and when installed it'll be used automatically
    as GHC CPP which is whole logic of this patch. So although we use modern
    GCC as a C compiler and assembler we use old GCC as a C preprocessor.
    
    Test Plan: validate
    
    Reviewers: austin
    
    Reviewed By: austin
    
    Subscribers: phaskell, simonmar, relrod, ezyang, carter
    
    Differential Revision: https://phabricator.haskell.org/D151
    2d42564a
configure.ac.in 3.98 KB