1 files changed, 7 insertions, 0 deletions

diff --git a/hmatrix.cabal b/hmatrix.cabal
index 5416c09..894bff0 100644
--- a/hmatrix.cabal
+++ b/hmatrix.cabal
@@ -51,6 +51,10 @@ flag tests
     description:    Build tests
     default:        True
 
+flag dd
+    description:    svd = zgesdd
+    default:        True
+
 flag mkl
     description:    Link with Intel's MKL optimized libraries.
     default:        False
@@ -119,6 +123,9 @@ library
     if flag(unsafe)
         cpp-options: -DUNSAFE
 
+    if !flag(dd)
+        cpp-options: -DNOZGESDD
+
     if impl(ghc < 6.10.2)
         cpp-options: -DFINIT