{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE ScopedTypeVariables #-}

module GHC.Settings.IO
 ( SettingsError (..)
 , initSettings
 ) where

import GHC.Prelude

import GHC.Settings.Utils

import GHC.Settings.Config
import GHC.Utils.CliOption
import GHC.Utils.Fingerprint
import GHC.Platform
import GHC.Utils.Panic
import GHC.Settings
import GHC.SysTools.BaseDir

import Control.Monad.Trans.Except
import Control.Monad.IO.Class
import qualified Data.Map as Map
import System.FilePath
import System.Directory

data SettingsError
  = SettingsError_MissingData String
  | SettingsError_BadData String

initSettings
  :: forall m
  .  MonadIO m
  => String -- ^ TopDir path
  -> ExceptT SettingsError m Settings
initSettings :: forall (m :: * -> *).
MonadIO m =>
String -> ExceptT SettingsError m Settings
initSettings String
top_dir = do
  let installed :: FilePath -> FilePath
      installed :: String -> String
installed String
file = String
top_dir String -> String -> String
</> String
file
      libexec :: FilePath -> FilePath
      libexec :: String -> String
libexec String
file = String
top_dir String -> String -> String
</> String
"bin" String -> String -> String
</> String
file
      settingsFile :: String
settingsFile = String -> String
installed String
"settings"

      readFileSafe :: FilePath -> ExceptT SettingsError m String
      readFileSafe :: String -> ExceptT SettingsError m String
readFileSafe String
path = IO Bool -> ExceptT SettingsError m Bool
forall a. IO a -> ExceptT SettingsError m a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (String -> IO Bool
doesFileExist String
path) ExceptT SettingsError m Bool
-> (Bool -> ExceptT SettingsError m String)
-> ExceptT SettingsError m String
forall a b.
ExceptT SettingsError m a
-> (a -> ExceptT SettingsError m b) -> ExceptT SettingsError m b
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= \case
        Bool
True -> IO String -> ExceptT SettingsError m String
forall a. IO a -> ExceptT SettingsError m a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO String -> ExceptT SettingsError m String)
-> IO String -> ExceptT SettingsError m String
forall a b. (a -> b) -> a -> b
$ String -> IO String
readFile String
path
        Bool
False -> SettingsError -> ExceptT SettingsError m String
forall (m :: * -> *) e a. Monad m => e -> ExceptT e m a
throwE (SettingsError -> ExceptT SettingsError m String)
-> SettingsError -> ExceptT SettingsError m String
forall a b. (a -> b) -> a -> b
$ String -> SettingsError
SettingsError_MissingData (String -> SettingsError) -> String -> SettingsError
forall a b. (a -> b) -> a -> b
$ String
"Missing file: " String -> String -> String
forall a. [a] -> [a] -> [a]
++ String
path

  String
settingsStr <- String -> ExceptT SettingsError m String
readFileSafe String
settingsFile
  [(String, String)]
settingsList <- case String -> Maybe [(String, String)]
forall a. Read a => String -> Maybe a
maybeReadFuzzy String
settingsStr of
    Just [(String, String)]
s -> [(String, String)] -> ExceptT SettingsError m [(String, String)]
forall a. a -> ExceptT SettingsError m a
forall (f :: * -> *) a. Applicative f => a -> f a
pure [(String, String)]
s
    Maybe [(String, String)]
Nothing -> SettingsError -> ExceptT SettingsError m [(String, String)]
forall (m :: * -> *) e a. Monad m => e -> ExceptT e m a
throwE (SettingsError -> ExceptT SettingsError m [(String, String)])
-> SettingsError -> ExceptT SettingsError m [(String, String)]
forall a b. (a -> b) -> a -> b
$ String -> SettingsError
SettingsError_BadData (String -> SettingsError) -> String -> SettingsError
forall a b. (a -> b) -> a -> b
$
      String
"Can't parse " String -> String -> String
forall a. [a] -> [a] -> [a]
++ String -> String
forall a. Show a => a -> String
show String
settingsFile
  let mySettings :: Map String String
mySettings = [(String, String)] -> Map String String
forall k a. Ord k => [(k, a)] -> Map k a
Map.fromList [(String, String)]
settingsList
      getBooleanSetting :: String -> ExceptT SettingsError m Bool
      getBooleanSetting :: String -> ExceptT SettingsError m Bool
getBooleanSetting String
key = (String -> ExceptT SettingsError m Bool)
-> (Bool -> ExceptT SettingsError m Bool)
-> Either String Bool
-> ExceptT SettingsError m Bool
forall a c b. (a -> c) -> (b -> c) -> Either a b -> c
either String -> ExceptT SettingsError m Bool
forall a. String -> a
pgmError Bool -> ExceptT SettingsError m Bool
forall a. a -> ExceptT SettingsError m a
forall (f :: * -> *) a. Applicative f => a -> f a
pure (Either String Bool -> ExceptT SettingsError m Bool)
-> Either String Bool -> ExceptT SettingsError m Bool
forall a b. (a -> b) -> a -> b
$
        String -> Map String String -> String -> Either String Bool
getRawBooleanSetting String
settingsFile Map String String
mySettings String
key

  -- On Windows, by mingw is often distributed with GHC,
  -- so we look in TopDir/../mingw/bin,
  -- as well as TopDir/../../mingw/bin for hadrian.
  -- But we might be disabled, in which we we don't do that.
  Bool
useInplaceMinGW <- String -> ExceptT SettingsError m Bool
getBooleanSetting String
"Use inplace MinGW toolchain"

  -- see Note [topdir: How GHC finds its files]
  -- NB: top_dir is assumed to be in standard Unix
  -- format, '/' separated
  Maybe String
mtool_dir <- IO (Maybe String) -> ExceptT SettingsError m (Maybe String)
forall a. IO a -> ExceptT SettingsError m a
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (IO (Maybe String) -> ExceptT SettingsError m (Maybe String))
-> IO (Maybe String) -> ExceptT SettingsError m (Maybe String)
forall a b. (a -> b) -> a -> b
$ Bool -> String -> IO (Maybe String)
findToolDir Bool
useInplaceMinGW String
top_dir
        -- see Note [tooldir: How GHC finds mingw on Windows]

  -- See Note [Settings file] for a little more about this file. We're
  -- just partially applying those functions and throwing 'Left's; they're
  -- written in a very portable style to keep ghc-boot light.
  let getSetting :: String -> ExceptT SettingsError m String
getSetting String
key = (String -> ExceptT SettingsError m String)
-> (String -> ExceptT SettingsError m String)
-> Either String String
-> ExceptT SettingsError m String
forall a c b. (a -> c) -> (b -> c) -> Either a b -> c
either String -> ExceptT SettingsError m String
forall a. String -> a
pgmError String -> ExceptT SettingsError m String
forall a. a -> ExceptT SettingsError m a
forall (f :: * -> *) a. Applicative f => a -> f a
pure (Either String String -> ExceptT SettingsError m String)
-> Either String String -> ExceptT SettingsError m String
forall a b. (a -> b) -> a -> b
$
        String
-> String -> Map String String -> String -> Either String String
getRawFilePathSetting String
top_dir String
settingsFile Map String String
mySettings String
key
      getToolSetting :: String -> ExceptT SettingsError m String
      getToolSetting :: String -> ExceptT SettingsError m String
getToolSetting String
key = Bool -> Maybe String -> String -> String
expandToolDir Bool
useInplaceMinGW Maybe String
mtool_dir (String -> String)
-> ExceptT SettingsError m String -> ExceptT SettingsError m String
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> String -> ExceptT SettingsError m String
getSetting String
key
  String
targetPlatformString <- String -> ExceptT SettingsError m String
getSetting String
"target platform string"
  String
myExtraGccViaCFlags <- String -> ExceptT SettingsError m String
getSetting String
"GCC extra via C opts"
  String
cc_prog <- String -> ExceptT SettingsError m String
getToolSetting String
"C compiler command"
  String
cxx_prog <- String -> ExceptT SettingsError m String
getToolSetting String
"C++ compiler command"
  String
cc_args_str <- String -> ExceptT SettingsError m String
getSetting String
"C compiler flags"
  String
cxx_args_str <- String -> ExceptT SettingsError m String
getSetting String
"C++ compiler flags"
  Bool
gccSupportsNoPie <- String -> ExceptT SettingsError m Bool
getBooleanSetting String
"C compiler supports -no-pie"
  String
cpp_prog <- String -> ExceptT SettingsError m String
getToolSetting String
"Haskell CPP command"
  String
cpp_args_str <- String -> ExceptT SettingsError m String
getSetting String
"Haskell CPP flags"

  Platform
platform <- (String -> ExceptT SettingsError m Platform)
-> (Platform -> ExceptT SettingsError m Platform)
-> Either String Platform
-> ExceptT SettingsError m Platform
forall a c b. (a -> c) -> (b -> c) -> Either a b -> c
either String -> ExceptT SettingsError m Platform
forall a. String -> a
pgmError Platform -> ExceptT SettingsError m Platform
forall a. a -> ExceptT SettingsError m a
forall (f :: * -> *) a. Applicative f => a -> f a
pure (Either String Platform -> ExceptT SettingsError m Platform)
-> Either String Platform -> ExceptT SettingsError m Platform
forall a b. (a -> b) -> a -> b
$ String -> Map String String -> Either String Platform
getTargetPlatform String
settingsFile Map String String
mySettings

  let unreg_cc_args :: [String]
unreg_cc_args = if Platform -> Bool
platformUnregisterised Platform
platform
                      then [String
"-DNO_REGS", String
"-DUSE_MINIINTERPRETER"]
                      else []
      cpp_args :: [Option]
cpp_args = (String -> Option) -> [String] -> [Option]
forall a b. (a -> b) -> [a] -> [b]
map String -> Option
Option (String -> [String]
words String
cpp_args_str)
      cc_args :: [String]
cc_args  = String -> [String]
words String
cc_args_str [String] -> [String] -> [String]
forall a. [a] -> [a] -> [a]
++ [String]
unreg_cc_args
      cxx_args :: [String]
cxx_args = String -> [String]
words String
cxx_args_str
  Bool
ldSupportsCompactUnwind <- String -> ExceptT SettingsError m Bool
getBooleanSetting String
"ld supports compact unwind"
  Bool
ldSupportsBuildId       <- String -> ExceptT SettingsError m Bool
getBooleanSetting String
"ld supports build-id"
  Bool
ldSupportsFilelist      <- String -> ExceptT SettingsError m Bool
getBooleanSetting String
"ld supports filelist"
  Bool
ldIsGnuLd               <- String -> ExceptT SettingsError m Bool
getBooleanSetting String
"ld is GNU ld"
  Bool
arSupportsDashL         <- String -> ExceptT SettingsError m Bool
getBooleanSetting String
"ar supports -L"

  let globalpkgdb_path :: String
globalpkgdb_path = String -> String
installed String
"package.conf.d"
      ghc_usage_msg_path :: String
ghc_usage_msg_path  = String -> String
installed String
"ghc-usage.txt"
      ghci_usage_msg_path :: String
ghci_usage_msg_path = String -> String
installed String
"ghci-usage.txt"

  -- For all systems, unlit, split, mangle are GHC utilities
  -- architecture-specific stuff is done when building Config.hs
  String
unlit_path <- String -> ExceptT SettingsError m String
getToolSetting String
"unlit command"

  String
windres_path <- String -> ExceptT SettingsError m String
getToolSetting String
"windres command"
  String
libtool_path <- String -> ExceptT SettingsError m String
getToolSetting String
"libtool command"
  String
ar_path <- String -> ExceptT SettingsError m String
getToolSetting String
"ar command"
  String
otool_path <- String -> ExceptT SettingsError m String
getToolSetting String
"otool command"
  String
install_name_tool_path <- String -> ExceptT SettingsError m String
getToolSetting String
"install_name_tool command"
  String
ranlib_path <- String -> ExceptT SettingsError m String
getToolSetting String
"ranlib command"

  String
touch_path <- String -> ExceptT SettingsError m String
getToolSetting String
"touch command"

  String
mkdll_prog <- String -> ExceptT SettingsError m String
getToolSetting String
"dllwrap command"
  let mkdll_args :: [a]
mkdll_args = []

  -- cpp is derived from gcc on all platforms
  -- HACK, see setPgmP below. We keep 'words' here to remember to fix
  -- Config.hs one day.


  -- Other things being equal, as and ld are simply gcc
  String
cc_link_args_str <- String -> ExceptT SettingsError m String
getSetting String
"C compiler link flags"
  let   as_prog :: String
as_prog  = String
cc_prog
        as_args :: [Option]
as_args  = (String -> Option) -> [String] -> [Option]
forall a b. (a -> b) -> [a] -> [b]
map String -> Option
Option [String]
cc_args
        ld_prog :: String
ld_prog  = String
cc_prog
        ld_args :: [Option]
ld_args  = (String -> Option) -> [String] -> [Option]
forall a b. (a -> b) -> [a] -> [b]
map String -> Option
Option ([String]
cc_args [String] -> [String] -> [String]
forall a. [a] -> [a] -> [a]
++ String -> [String]
words String
cc_link_args_str)
  String
ld_r_prog <- String -> ExceptT SettingsError m String
getToolSetting String
"Merge objects command"
  String
ld_r_args <- String -> ExceptT SettingsError m String
getSetting String
"Merge objects flags"
  let ld_r :: Maybe (String, [Option])
ld_r
        | String -> Bool
forall a. [a] -> Bool
forall (t :: * -> *) a. Foldable t => t a -> Bool
null String
ld_r_prog = Maybe (String, [Option])
forall a. Maybe a
Nothing
        | Bool
otherwise      = (String, [Option]) -> Maybe (String, [Option])
forall a. a -> Maybe a
Just (String
ld_r_prog, (String -> Option) -> [String] -> [Option]
forall a b. (a -> b) -> [a] -> [b]
map String -> Option
Option ([String] -> [Option]) -> [String] -> [Option]
forall a b. (a -> b) -> a -> b
$ String -> [String]
words String
ld_r_args)

  String
llvmTarget <- String -> ExceptT SettingsError m String
getSetting String
"LLVM target"

  -- We just assume on command line
  String
lc_prog <- String -> ExceptT SettingsError m String
getSetting String
"LLVM llc command"
  String
lo_prog <- String -> ExceptT SettingsError m String
getSetting String
"LLVM opt command"
  String
lcc_prog <- String -> ExceptT SettingsError m String
getSetting String
"LLVM clang command"

  let iserv_prog :: String
iserv_prog = String -> String
libexec String
"ghc-iserv"

  Bool
ghcWithInterpreter <- String -> ExceptT SettingsError m Bool
getBooleanSetting String
"Use interpreter"
  Bool
useLibFFI <- String -> ExceptT SettingsError m Bool
getBooleanSetting String
"Use LibFFI"

  Settings -> ExceptT SettingsError m Settings
forall a. a -> ExceptT SettingsError m a
forall (m :: * -> *) a. Monad m => a -> m a
return (Settings -> ExceptT SettingsError m Settings)
-> Settings -> ExceptT SettingsError m Settings
forall a b. (a -> b) -> a -> b
$ Settings
    { sGhcNameVersion :: GhcNameVersion
sGhcNameVersion = GhcNameVersion
      { ghcNameVersion_programName :: String
ghcNameVersion_programName = String
"ghc"
      , ghcNameVersion_projectVersion :: String
ghcNameVersion_projectVersion = String
cProjectVersion
      }

    , sFileSettings :: FileSettings
sFileSettings = FileSettings
      { fileSettings_ghcUsagePath :: String
fileSettings_ghcUsagePath   = String
ghc_usage_msg_path
      , fileSettings_ghciUsagePath :: String
fileSettings_ghciUsagePath  = String
ghci_usage_msg_path
      , fileSettings_toolDir :: Maybe String
fileSettings_toolDir        = Maybe String
mtool_dir
      , fileSettings_topDir :: String
fileSettings_topDir         = String
top_dir
      , fileSettings_globalPackageDatabase :: String
fileSettings_globalPackageDatabase = String
globalpkgdb_path
      }

    , sToolSettings :: ToolSettings
sToolSettings = ToolSettings
      { toolSettings_ldSupportsCompactUnwind :: Bool
toolSettings_ldSupportsCompactUnwind = Bool
ldSupportsCompactUnwind
      , toolSettings_ldSupportsBuildId :: Bool
toolSettings_ldSupportsBuildId       = Bool
ldSupportsBuildId
      , toolSettings_ldSupportsFilelist :: Bool
toolSettings_ldSupportsFilelist      = Bool
ldSupportsFilelist
      , toolSettings_ldIsGnuLd :: Bool
toolSettings_ldIsGnuLd               = Bool
ldIsGnuLd
      , toolSettings_ccSupportsNoPie :: Bool
toolSettings_ccSupportsNoPie         = Bool
gccSupportsNoPie
      , toolSettings_useInplaceMinGW :: Bool
toolSettings_useInplaceMinGW         = Bool
useInplaceMinGW
      , toolSettings_arSupportsDashL :: Bool
toolSettings_arSupportsDashL         = Bool
arSupportsDashL

      , toolSettings_pgm_L :: String
toolSettings_pgm_L   = String
unlit_path
      , toolSettings_pgm_P :: (String, [Option])
toolSettings_pgm_P   = (String
cpp_prog, [Option]
cpp_args)
      , toolSettings_pgm_F :: String
toolSettings_pgm_F   = String
""
      , toolSettings_pgm_c :: String
toolSettings_pgm_c   = String
cc_prog
      , toolSettings_pgm_cxx :: String
toolSettings_pgm_cxx = String
cxx_prog
      , toolSettings_pgm_a :: (String, [Option])
toolSettings_pgm_a   = (String
as_prog, [Option]
as_args)
      , toolSettings_pgm_l :: (String, [Option])
toolSettings_pgm_l   = (String
ld_prog, [Option]
ld_args)
      , toolSettings_pgm_lm :: Maybe (String, [Option])
toolSettings_pgm_lm  = Maybe (String, [Option])
ld_r
      , toolSettings_pgm_dll :: (String, [Option])
toolSettings_pgm_dll = (String
mkdll_prog,[Option]
forall a. [a]
mkdll_args)
      , toolSettings_pgm_T :: String
toolSettings_pgm_T   = String
touch_path
      , toolSettings_pgm_windres :: String
toolSettings_pgm_windres = String
windres_path
      , toolSettings_pgm_libtool :: String
toolSettings_pgm_libtool = String
libtool_path
      , toolSettings_pgm_ar :: String
toolSettings_pgm_ar = String
ar_path
      , toolSettings_pgm_otool :: String
toolSettings_pgm_otool = String
otool_path
      , toolSettings_pgm_install_name_tool :: String
toolSettings_pgm_install_name_tool = String
install_name_tool_path
      , toolSettings_pgm_ranlib :: String
toolSettings_pgm_ranlib = String
ranlib_path
      , toolSettings_pgm_lo :: (String, [Option])
toolSettings_pgm_lo  = (String
lo_prog,[])
      , toolSettings_pgm_lc :: (String, [Option])
toolSettings_pgm_lc  = (String
lc_prog,[])
      , toolSettings_pgm_lcc :: (String, [Option])
toolSettings_pgm_lcc = (String
lcc_prog,[])
      , toolSettings_pgm_i :: String
toolSettings_pgm_i   = String
iserv_prog
      , toolSettings_opt_L :: [String]
toolSettings_opt_L       = []
      , toolSettings_opt_P :: [String]
toolSettings_opt_P       = []
      , toolSettings_opt_P_fingerprint :: Fingerprint
toolSettings_opt_P_fingerprint = Fingerprint
fingerprint0
      , toolSettings_opt_F :: [String]
toolSettings_opt_F       = []
      , toolSettings_opt_c :: [String]
toolSettings_opt_c       = [String]
cc_args
      , toolSettings_opt_cxx :: [String]
toolSettings_opt_cxx     = [String]
cxx_args
      , toolSettings_opt_a :: [String]
toolSettings_opt_a       = []
      , toolSettings_opt_l :: [String]
toolSettings_opt_l       = []
      , toolSettings_opt_lm :: [String]
toolSettings_opt_lm      = []
      , toolSettings_opt_windres :: [String]
toolSettings_opt_windres = []
      , toolSettings_opt_lcc :: [String]
toolSettings_opt_lcc     = []
      , toolSettings_opt_lo :: [String]
toolSettings_opt_lo      = []
      , toolSettings_opt_lc :: [String]
toolSettings_opt_lc      = []
      , toolSettings_opt_i :: [String]
toolSettings_opt_i       = []

      , toolSettings_extraGccViaCFlags :: [String]
toolSettings_extraGccViaCFlags = String -> [String]
words String
myExtraGccViaCFlags
      }

    , sTargetPlatform :: Platform
sTargetPlatform = Platform
platform
    , sPlatformMisc :: PlatformMisc
sPlatformMisc = PlatformMisc
      { platformMisc_targetPlatformString :: String
platformMisc_targetPlatformString = String
targetPlatformString
      , platformMisc_ghcWithInterpreter :: Bool
platformMisc_ghcWithInterpreter = Bool
ghcWithInterpreter
      , platformMisc_libFFI :: Bool
platformMisc_libFFI = Bool
useLibFFI
      , platformMisc_llvmTarget :: String
platformMisc_llvmTarget = String
llvmTarget
      }

    , sRawSettings :: [(String, String)]
sRawSettings    = [(String, String)]
settingsList
    }

getTargetPlatform
  :: FilePath     -- ^ Settings filepath (for error messages)
  -> RawSettings  -- ^ Raw settings file contents
  -> Either String Platform
getTargetPlatform :: String -> Map String String -> Either String Platform
getTargetPlatform String
settingsFile Map String String
settings = do
  let
    getBooleanSetting :: String -> Either String Bool
getBooleanSetting = String -> Map String String -> String -> Either String Bool
getRawBooleanSetting String
settingsFile Map String String
settings
    readSetting :: (Show a, Read a) => String -> Either String a
    readSetting :: forall a. (Show a, Read a) => String -> Either String a
readSetting = String -> Map String String -> String -> Either String a
forall a.
(Show a, Read a) =>
String -> Map String String -> String -> Either String a
readRawSetting String
settingsFile Map String String
settings

  ArchOS
targetArchOS <- String -> Map String String -> Either String ArchOS
getTargetArchOS String
settingsFile Map String String
settings
  PlatformWordSize
targetWordSize <- String -> Either String PlatformWordSize
forall a. (Show a, Read a) => String -> Either String a
readSetting String
"target word size"
  Bool
targetWordBigEndian <- String -> Either String Bool
getBooleanSetting String
"target word big endian"
  Bool
targetLeadingUnderscore <- String -> Either String Bool
getBooleanSetting String
"Leading underscore"
  Bool
targetUnregisterised <- String -> Either String Bool
getBooleanSetting String
"Unregisterised"
  Bool
targetHasGnuNonexecStack <- String -> Either String Bool
getBooleanSetting String
"target has GNU nonexec stack"
  Bool
targetHasIdentDirective <- String -> Either String Bool
getBooleanSetting String
"target has .ident directive"
  Bool
targetHasSubsectionsViaSymbols <- String -> Either String Bool
getBooleanSetting String
"target has subsections via symbols"
  Bool
targetHasLibm <- String -> Either String Bool
getBooleanSetting String
"target has libm"
  Bool
crossCompiling <- String -> Either String Bool
getBooleanSetting String
"cross compiling"
  Bool
tablesNextToCode <- String -> Either String Bool
getBooleanSetting String
"Tables next to code"

  Platform -> Either String Platform
forall a. a -> Either String a
forall (f :: * -> *) a. Applicative f => a -> f a
pure (Platform -> Either String Platform)
-> Platform -> Either String Platform
forall a b. (a -> b) -> a -> b
$ Platform
    { platformArchOS :: ArchOS
platformArchOS    = ArchOS
targetArchOS
    , platformWordSize :: PlatformWordSize
platformWordSize  = PlatformWordSize
targetWordSize
    , platformByteOrder :: ByteOrder
platformByteOrder = if Bool
targetWordBigEndian then ByteOrder
BigEndian else ByteOrder
LittleEndian
    , platformUnregisterised :: Bool
platformUnregisterised = Bool
targetUnregisterised
    , platformHasGnuNonexecStack :: Bool
platformHasGnuNonexecStack = Bool
targetHasGnuNonexecStack
    , platformHasIdentDirective :: Bool
platformHasIdentDirective = Bool
targetHasIdentDirective
    , platformHasSubsectionsViaSymbols :: Bool
platformHasSubsectionsViaSymbols = Bool
targetHasSubsectionsViaSymbols
    , platformIsCrossCompiling :: Bool
platformIsCrossCompiling = Bool
crossCompiling
    , platformLeadingUnderscore :: Bool
platformLeadingUnderscore = Bool
targetLeadingUnderscore
    , platformTablesNextToCode :: Bool
platformTablesNextToCode  = Bool
tablesNextToCode
    , platformHasLibm :: Bool
platformHasLibm = Bool
targetHasLibm
    , platform_constants :: Maybe PlatformConstants
platform_constants = Maybe PlatformConstants
forall a. Maybe a
Nothing -- will be filled later when loading (or building) the RTS unit
    }