Cloog: tightened dependency check.

* Explicitly request external gmp and isl as well as specifying their
  prefixes.
* Enable verbose build log for better diagnosis.

1 files changed, 4 insertions, 0 deletions

diff --git a/Library/Formula/cloog.rb b/Library/Formula/cloog.rb
index 3e0bd19d1..0336113d6 100644
--- a/Library/Formula/cloog.rb
+++ b/Library/Formula/cloog.rb
@@ -11,7 +11,11 @@ class Cloog < Formula
 
   def install
     system "./configure", "--disable-dependency-tracking",
+                          "--disable-silent-rules",
                           "--prefix=#{prefix}",
+                          "--with-gmp=system",
+                          "--with-gmp-prefix=#{Formula.factory("gmp").opt_prefix}",
+                          "--with-isl=system",
                           "--with-isl-prefix=#{Formula.factory("isl").opt_prefix}"
     system "make install"
   end