Add a versions haddock binary for Windows

driver/haddock/Makefile

+dir=driver/haddock
+TOP=../..
+include $(TOP)/mk/sub-makefile.mk

driver/haddock/ghc.mk

+# -----------------------------------------------------------------------------
+#
+# (c) 2009 The University of Glasgow
+#
+# This file is part of the GHC build system.
+#
+# To understand how the build system works and how to modify it, see
+#      http://hackage.haskell.org/trac/ghc/wiki/Building/Architecture
+#      http://hackage.haskell.org/trac/ghc/wiki/Building/Modifying
+#
+# -----------------------------------------------------------------------------
+
+ifeq "$(Windows)" "YES"
+
+driver/haddock_dist_C_SRCS   = haddock.c ../utils/cwrapper.c ../utils/getLocation.c
+driver/haddock_dist_CC_OPTS += -I driver/utils
+driver/haddock_dist_PROG     = haddock-$(ProjectVersion)
+driver/haddock_dist_INSTALL  = YES
+driver/haddock_dist_INSTALL_INPLACE = NO
+
+$(eval $(call build-prog,driver/haddock,dist,0))
+
+endif
+

driver/haddock/haddock.c

+
+#include "cwrapper.h"
+#include "getLocation.h"
+#include <stddef.h>
+
+int main(int argc, char** argv) {
+    char *binDir;
+    char *exePath;
+
+    binDir = getExecutablePath();
+    exePath = mkString("%s/haddock.exe", binDir);
+
+    run(exePath, 0, NULL, argc - 1, argv + 1);
+}

ghc.mk

@@ -520,6 +520,7 @@ BUILD_DIRS += \
    driver \
    driver/ghci \
    driver/ghc \
+   driver/haddock \
    libffi \
    includes \
    rts