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-rw-r--r--pkgs/development/tools/misc/ddd/default.nix2
1 files changed, 2 insertions, 0 deletions
diff --git a/pkgs/development/tools/misc/ddd/default.nix b/pkgs/development/tools/misc/ddd/default.nix
index c51a5f50474..1ff96918766 100644
--- a/pkgs/development/tools/misc/ddd/default.nix
+++ b/pkgs/development/tools/misc/ddd/default.nix
@@ -11,6 +11,8 @@ stdenv.mkDerivation rec {
 
   patches = [ ./gcc44.patch ];
 
+  NIX_CFLAGS_COMPILE = "-fpermissive";
+
   meta = {
     homepage = https://www.gnu.org/software/ddd;
     description = "Graphical front-end for command-line debuggers";