Merge pull request #7510 from Mikolaj/master

Set PATH_SEPARATOR=; when calling ./configure; fix #7494

Author: Mikolaj

Cabal/src/Distribution/Simple.hs

@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE RankNTypes #-}
 {-# LANGUAGE LambdaCase #-}
@@ -715,6 +716,11 @@ runConfigureScript verbosity backwardsCompatHack flags lbi = do
       pathEnv = maybe (intercalate spSep extraPath)
                 ((intercalate spSep extraPath ++ spSep)++) $ lookup "PATH" env
       overEnv = ("CFLAGS", Just cflagsEnv) :
+-- TODO: Move to either Cabal/src/Distribution/Compat/Environment.hs
+-- or Cabal/src/Distribution/Compat/FilePath.hs:
+#ifdef mingw32_HOST_OS
+                ("PATH_SEPARATOR", Just ";") :
+#endif
                 [("PATH", Just pathEnv) | not (null extraPath)]
       hp = hostPlatform lbi
       maybeHostFlag = if hp == buildPlatform then [] else ["--host=" ++ show (pretty hp)]

changelog.d/pr-7510

@@ -0,0 +1,4 @@
+synopsis: Set PATH_SEPARATOR=";" when calling ./configure on Windows; this fix is necessary for autoconf >= 2.70
+packages: Cabal
+prs: #7510
+issues: #7494