dnl if GNU patch is named gpatch, look for it first
AC_PATH_PROGS(PatchCmd,gpatch patch, patch)
+dnl ** check for dtrace (currently only implemented for Mac OS X)
+HaveDtrace=NO
+AC_PATH_PROG(DtraceCmd,dtrace)
+if test -n "$DtraceCmd"; then
+ if test "x$TargetOS_CPP-$TargetVendor_CPP" == "xdarwin-apple"; then
+ HaveDtrace=YES
+ fi
+fi
+AC_SUBST(HaveDtrace)
+
AC_PATH_PROG(HSCOLOUR,HsColour)
# HsColour is passed to Cabal, so we need a native path
if test "x$HostPlatform" = "xi386-unknown-mingw32" && \