[PATCH] devel/imake: fix build with clang

[Kevin Lo]

Here's the trivial patch that fixes build with clang. Ok?

Index: devel/imake/Makefile
===================================================================
--- devel/imake/Makefile        (revision 307768)
+++ devel/imake/Makefile        (working copy)
@@ -43,7 +43,7 @@ post-patch:

  # clang's cpp destroys whitespace, particularly hard tabs in makefiles,
  # which is fatal for imake.
-.if defined(CC) && ${CC} == "clang"
+.if ${OSVERSION} >= 1000024 || (${OSVERSION} < 1000024 && ${CC} == "clang")
  BUILD_DEPENDS+=        ucpp:${PORTSDIR}/devel/ucpp
  RUN_DEPENDS+=  ucpp:${PORTSDIR}/devel/ucpp
  CONFIGURE_ENV+=        ac_cv_path_RAWCPP="ucpp -s"