[commit: hadrian] master: Do not always add -Iincludes to C arguments (#610) (ec5e9d3)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/hadrian

On branch  : master
Link       : http://git.haskell.org/hadrian.git/commitdiff/ec5e9d3acdf9ca5ae0e5808ad6f510e9167f2552

>---------------------------------------------------------------

commit ec5e9d3acdf9ca5ae0e5808ad6f510e9167f2552
Author: Alp Mestanogullari <alpmestan at gmail.com>
Date:   Wed Jun 6 22:26:13 2018 +0200

    Do not always add -Iincludes to C arguments (#610)


>---------------------------------------------------------------

ec5e9d3acdf9ca5ae0e5808ad6f510e9167f2552
 src/Settings/Builders/Common.hs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Settings/Builders/Common.hs b/src/Settings/Builders/Common.hs
index 1995c66..ae660db 100644
--- a/src/Settings/Builders/Common.hs
+++ b/src/Settings/Builders/Common.hs
@@ -11,6 +11,7 @@ module Settings.Builders.Common (
 
 import Base
 import Expression
+import GHC.Packages
 import Hadrian.Haskell.Cabal.PackageData
 import Oracles.Flag
 import Oracles.Setting
@@ -27,7 +28,7 @@ cIncludeArgs = do
     iconvIncludeDir <- getSetting IconvIncludeDir
     gmpIncludeDir   <- getSetting GmpIncludeDir
     ffiIncludeDir   <- getSetting FfiIncludeDir
-    mconcat [ arg "-Iincludes"
+    mconcat [ notStage0 ||^ package compiler ? arg "-Iincludes"
             , arg $ "-I" ++ root -/- generatedDir
             , arg $ "-I" ++ path
             , pure . map ("-I"++) . filter (/= "") $ [iconvIncludeDir, gmpIncludeDir]