diff options
Diffstat (limited to 'compiler/main/DriverPipeline.hs')
| -rw-r--r-- | compiler/main/DriverPipeline.hs | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/compiler/main/DriverPipeline.hs b/compiler/main/DriverPipeline.hs index 5d3dbafdbb..39d818889b 100644 --- a/compiler/main/DriverPipeline.hs +++ b/compiler/main/DriverPipeline.hs @@ -1193,9 +1193,6 @@ runPhase (RealPhase Cmm) input_fn dflags ----------------------------------------------------------------------------- -- Cc phase --- we don't support preprocessing .c files (with -E) now. Doing so introduces --- way too many hacks, and I can't say I've ever used it anyway. - runPhase (RealPhase cc_phase) input_fn dflags | any (cc_phase `eqPhase`) [Cc, Ccxx, HCc, Cobjc, Cobjcxx] = do @@ -1217,6 +1214,16 @@ runPhase (RealPhase cc_phase) input_fn dflags (includePathsQuote cmdline_include_paths) let include_paths = include_paths_quote ++ include_paths_global + -- pass -D or -optP to preprocessor when compiling foreign C files + -- (#16737). Doing it in this way is simpler and also enable the C + -- compiler to performs preprocessing and parsing in a single pass, + -- but it may introduce inconsistency if a different pgm_P is specified. + let more_preprocessor_opts = concat + [ ["-Xpreprocessor", i] + | not hcc + , i <- getOpts dflags opt_P + ] + let gcc_extra_viac_flags = extraGccViaCFlags dflags let pic_c_flags = picCCOpts dflags @@ -1226,7 +1233,7 @@ runPhase (RealPhase cc_phase) input_fn dflags -- hc code doesn't not #include any header files anyway, so these -- options aren't necessary. pkg_extra_cc_opts <- liftIO $ - if cc_phase `eqPhase` HCc + if hcc then return [] else getPackageExtraCcOpts dflags pkgs @@ -1317,6 +1324,7 @@ runPhase (RealPhase cc_phase) input_fn dflags ++ [ "-include", ghcVersionH ] ++ framework_paths ++ include_paths + ++ more_preprocessor_opts ++ pkg_extra_cc_opts )) |