1 files changed, 8 insertions, 0 deletions

diff --git a/packages/base/hmatrix.cabal b/packages/base/hmatrix.cabal
index 76e3825..4dc62e5 100644
--- a/packages/base/hmatrix.cabal
+++ b/packages/base/hmatrix.cabal
@@ -36,6 +36,11 @@ flag disable-default-paths
     default:        False
     manual: True
 
+flag no-random_r
+    description:    When enabled, don't depend on the random_r() C function.
+    default:        False
+    manual: True
+
 library
 
     Build-Depends:      base >= 4.9 && < 5,
@@ -99,6 +104,9 @@ library
         cc-options:     -msse2
 
 
+    if flag(no-random_r)
+        cc-options: -DNO_RANDOM_R
+
     if os(OSX)
         if flag(openblas)
             if !flag(disable-default-paths)