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-rw-r--r--pkgs/development/libraries/ucl/default.nix3
1 files changed, 3 insertions, 0 deletions
diff --git a/pkgs/development/libraries/ucl/default.nix b/pkgs/development/libraries/ucl/default.nix
index c9133b64846..ceb97b6088b 100644
--- a/pkgs/development/libraries/ucl/default.nix
+++ b/pkgs/development/libraries/ucl/default.nix
@@ -7,6 +7,9 @@ stdenv.mkDerivation {
     sha256 = "b865299ffd45d73412293369c9754b07637680e5c826915f097577cd27350348";
   };
 
+  # needed to successfully compile with gcc 6
+  NIX_CFLAGS_COMPILE = "-std=c90 -fPIC";
+
   meta = {
     homepage = http://www.oberhumer.com/opensource/ucl/;
     description = "Portable lossless data compression library";