X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=aclocal.m4;h=f0ad4cf4c30d9572595a5720795e2439273322ba;hb=9a17dfd7f10952762cd8aff1ef4dbd0ae6daec37;hp=35eb79c18807358012a870015d89e4eef693598f;hpb=089b271132212ba6679651254b11d1218a103f03;p=ghc-hetmet.git

diff --git a/aclocal.m4 b/aclocal.m4
index 35eb79c..f0ad4cf 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -100,7 +100,7 @@ AC_DEFUN([FP_PROG_CONTEXT_DIFF],
 [echo foo > conftest1
 echo foo > conftest2
 fp_cv_context_diff=no
-for fp_var in '-C 1' '-c1'
+for fp_var in '-U 1' '-u1' '-C 1' '-c1'
 do
   if diff $fp_var conftest1 conftest2 > /dev/null 2>&1; then
     fp_cv_context_diff="diff $fp_var"
@@ -306,6 +306,15 @@ dnl
 AC_DEFUN([FPTOOLS_ALEX],
 [
 AC_PATH_PROG(AlexCmd,alex,)
+# Alex is passed to Cabal, so we need a native path
+if test "x$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