2 files changed, 4 insertions, 2 deletions

diff --git a/THANKS b/THANKS
index 21db8c3..bd7782c 100644
--- a/THANKS
+++ b/THANKS
@@ -83,4 +83,5 @@ module reorganization, monadic mapVectorM, and many other improvements.
 
 - Torsten Kemps-Benedix reported an installation problem in OS/X.
 
+- Stefan Kersten fixed hmatrix.cabal for 64-bit ghc-7 in OS/X
 
diff --git a/hmatrix.cabal b/hmatrix.cabal
index ac6a57b..cd01086 100644
--- a/hmatrix.cabal
+++ b/hmatrix.cabal
@@ -1,5 +1,5 @@
 Name:               hmatrix
-Version:            0.11.0.0
+Version:            0.11.0.1
 License:            GPL
 License-file:       LICENSE
 Author:             Alberto Ruiz
@@ -181,7 +181,8 @@ library
         extra-lib-dirs: /opt/local/lib/
         include-dirs: /opt/local/include
         extra-libraries: gsl
-        cc-options: -arch i386
+        if arch(i386)
+            cc-options: -arch i386
         frameworks: Accelerate
 
     if os(windows)