Hadrian: support in-tree GMP

Summary:
This adds top-level configure flags '--with-intree-gmp' and
'--with-framework-preferred', both of which are especially relevant
on MacOS.

Besides gaining two new flags, Hadrian also had to be taught what to
do with the 'framework' in .cabal files.

Test Plan:
./boot && ./configure --with-intree-gmp && ./hadrian/build.sh
./boot && ./configure --with-gmp-framework-preferred && ./hadrian/build.sh # on macos

Reviewers: carter, snowleopard, alpmestan, hvr, goldfire, bgamari

Subscribers: rwbarton, erikd

GHC Trac Issues: #16001

Differential Revision: https://phabricator.haskell.org/D5417

5 files changed, 13 insertions, 9 deletions

diff --git a/hadrian/src/Hadrian/Haskell/Cabal/Parse.hs b/hadrian/src/Hadrian/Haskell/Cabal/Parse.hs
index 995270184b..8df343b423 100644
--- a/hadrian/src/Hadrian/Haskell/Cabal/Parse.hs
+++ b/hadrian/src/Hadrian/Haskell/Cabal/Parse.hs
@@ -280,7 +280,8 @@ resolveContextData context@Context {..} = do
           , depIncludeDirs  = forDeps Installed.includeDirs
           , depCcOpts       = forDeps Installed.ccOptions
           , depLdOpts       = forDeps Installed.ldOptions
-          , buildGhciLib    = C.withGHCiLib lbi' }
+          , buildGhciLib    = C.withGHCiLib lbi'
+          , frameworks      = C.frameworks buildInfo }
 
 -- | Look for a @.buildinfo@ in all of the specified directories, stopping on
 -- the first one we find.
diff --git a/hadrian/src/Hadrian/Haskell/Cabal/Type.hs b/hadrian/src/Hadrian/Haskell/Cabal/Type.hs
index dd6e4bdcc6..b2a7002d6c 100644
--- a/hadrian/src/Hadrian/Haskell/Cabal/Type.hs
+++ b/hadrian/src/Hadrian/Haskell/Cabal/Type.hs
@@ -64,6 +64,7 @@ data ContextData = ContextData
     , depCcOpts       :: [String]
     , depLdOpts       :: [String]
     , buildGhciLib    :: Bool
+    , frameworks      :: [String]
     } deriving (Eq, Generic, Show, Typeable)
 
 instance Binary   PackageData
diff --git a/hadrian/src/Oracles/Flag.hs b/hadrian/src/Oracles/Flag.hs
index 57dbf2decb..b294cebc93 100644
--- a/hadrian/src/Oracles/Flag.hs
+++ b/hadrian/src/Oracles/Flag.hs
@@ -13,6 +13,8 @@ data Flag = ArSupportsAtFile
           | CrossCompiling
           | GccIsClang
           | GhcUnregisterised
+          | GmpInTree
+          | GmpFrameworkPref
           | LeadingUnderscore
           | SolarisBrokenShld
           | SplitObjectsBroken
@@ -29,6 +31,8 @@ flag f = do
             CrossCompiling     -> "cross-compiling"
             GccIsClang         -> "gcc-is-clang"
             GhcUnregisterised  -> "ghc-unregisterised"
+            GmpInTree          -> "intree-gmp"
+            GmpFrameworkPref   -> "gmp-framework-preferred"
             LeadingUnderscore  -> "leading-underscore"
             SolarisBrokenShld  -> "solaris-broken-shld"
             SplitObjectsBroken -> "split-objects-broken"
diff --git a/hadrian/src/Settings/Builders/Ghc.hs b/hadrian/src/Settings/Builders/Ghc.hs
index 4957de77fe..488e551cdc 100644
--- a/hadrian/src/Settings/Builders/Ghc.hs
+++ b/hadrian/src/Settings/Builders/Ghc.hs
@@ -45,6 +45,7 @@ ghcLinkArgs = builder (Ghc LinkHs) ? do
     pkg     <- getPackage
     libs    <- getContextData extraLibs
     libDirs <- getContextData extraLibDirs
+    fmwks   <- getContextData frameworks
     dynamic <- requiresDynamic
     darwin  <- expr osxHost
 
@@ -71,6 +72,7 @@ ghcLinkArgs = builder (Ghc LinkHs) ? do
             , not (nonHsMainPackage pkg) ? arg "-rtsopts"
             , pure [ "-l" ++ lib    | lib <-    libs    ]
             , pure [ "-L" ++ libDir | libDir <- libDirs ]
+            , darwin ? pure (concat [ ["-framework", fmwk] | fmwk <- fmwks ])
             ]
 
 findHsDependencies :: Args
diff --git a/hadrian/src/Settings/Packages.hs b/hadrian/src/Settings/Packages.hs
index 5993723bee..4be0fba740 100644
--- a/hadrian/src/Settings/Packages.hs
+++ b/hadrian/src/Settings/Packages.hs
@@ -136,14 +136,10 @@ packageArgs = do
           [ builder Cc ? arg includeGmp
 
           , builder (Cabal Setup) ? mconcat
-            [ -- TODO: This should respect some settings flag "InTreeGmp".
-              -- Depending on @IncludeDir@ and @LibDir@ is bound to fail, since
-              -- these are only set if the configure script was explicilty
-              -- called with GMP include and lib dirs. Their absense as such
-              -- does not imply @in-tree-gmp@.
-              -- (null gmpIncludeDir && null gmpLibDir) ?
-              -- arg "--configure-option=--with-intree-gmp"
-              arg ("--configure-option=CFLAGS=" ++ includeGmp)
+            [ flag GmpInTree ? arg "--configure-option=--with-intree-gmp"
+            , flag GmpFrameworkPref ?
+              arg "--configure-option=--with-gmp-framework-preferred"
+            , arg ("--configure-option=CFLAGS=" ++ includeGmp)
             , arg ("--gcc-options="             ++ includeGmp) ] ]
 
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