treewide: add -fpermissive due to configuration error with gcc_14

pkgs/development/libraries/directfb/default.nix

@@ -65,7 +65,11 @@ stdenv.mkDerivation rec {
       libXrender
     ]);
 
-  NIX_LDFLAGS = "-lgcc_s";
+  env = {
+    NIX_LDFLAGS = "-lgcc_s";
+  } // lib.optionalAttrs stdenv.cc.isGNU {
+    NIX_CFLAGS_COMPILE = "-fpermissive";
+  };
 
   configureFlags = [
     "--enable-sdl"

pkgs/tools/cd-dvd/cdrtools/default.nix

@@ -27,6 +27,10 @@ stdenv.mkDerivation rec {
 
   makeFlags = [ "GMAKE_NOWARN=true" "INS_BASE=/" "INS_RBASE=/" "DESTDIR=${placeholder "out"}" ];
 
+  env = lib.optionalAttrs stdenv.cc.isGNU {
+    NIX_CFLAGS_COMPILE = "-fpermissive";
+  };
+
   enableParallelBuilding = false; # parallel building fails on some linux machines
 
   hardeningDisable = lib.optional stdenv.hostPlatform.isMusl "fortify";

pkgs/tools/text/sgml/opensp/default.nix

@@ -50,6 +50,10 @@ stdenv.mkDerivation rec {
   ++ lib.optional stdenv.cc.isClang autoreconfHook
   ++ lib.optionals stdenv.isCygwin [ autoconf automake libtool ];
 
+  env = lib.optionalAttrs stdenv.cc.isGNU {
+    NIX_CFLAGS_COMPILE = "-fpermissive";
+  };
+
   doCheck = false; # fails
 
   meta = with lib; {