From 9a17dfd7f10952762cd8aff1ef4dbd0ae6daec37 Mon Sep 17 00:00:00 2001
From: Ian Lynagh <igloo@earth.li>
Date: Sat, 5 Jul 2008 15:55:59 +0000
Subject: [PATCH] On cygwin, convert alex's path to a native path

---
 aclocal.m4 |    9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/aclocal.m4 b/aclocal.m4
index ccb2530..f0ad4cf 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -306,6 +306,15 @@ dnl
 AC_DEFUN([FPTOOLS_ALEX],
 [
 AC_PATH_PROG(AlexCmd,alex,)
+# Alex is passed to Cabal, so we need a native path
+if test "x$HostPlatform"  = "xi386-unknown-mingw32" && \
+   test "${OSTYPE}"      != "msys"                  && \
+   test "${AlexCmd}"     != ""
+then
+    # Canonicalise to <drive>:/path/to/gcc
+    AlexCmd=`cygpath -m ${AlexCmd}`
+fi
+
 AC_CACHE_CHECK([for version of alex], fptools_cv_alex_version,
 changequote(, )dnl
 [if test x"$AlexCmd" != x; then
-- 
1.7.10.4