diff --git a/pkgs/applications/audio/furnace/default.nix b/pkgs/applications/audio/furnace/default.nix
index f3f7c3f624ba..3d3b87e3c5dc 100644
--- a/pkgs/applications/audio/furnace/default.nix
+++ b/pkgs/applications/audio/furnace/default.nix
@@ -63,8 +63,8 @@ stdenv.mkDerivation rec {
     "-DWARNINGS_ARE_ERRORS=ON"
   ];
 
-  NIX_CFLAGS_COMPILE = [
-    # Needed with GCC 12
+  NIX_CFLAGS_COMPILE = lib.optionals stdenv.cc.isGNU [
+    # Needed with GCC 12 but breaks on darwin (with clang)
     "-Wno-error=mismatched-new-delete"
     "-Wno-error=use-after-free"
   ];
diff --git a/pkgs/development/libraries/boringssl/default.nix b/pkgs/development/libraries/boringssl/default.nix
index b5d9d33a811f..955157d055a2 100644
--- a/pkgs/development/libraries/boringssl/default.nix
+++ b/pkgs/development/libraries/boringssl/default.nix
@@ -30,8 +30,8 @@ buildGoModule {
     export GOARCH=$(go env GOHOSTARCH)
   '';
 
-  NIX_CFLAGS_COMPILE = [
-    # Needed with GCC 12
+  NIX_CFLAGS_COMPILE = lib.optionals stdenv.cc.isGNU [
+    # Needed with GCC 12 but breaks on darwin (with clang)
     "-Wno-error=stringop-overflow"
   ];
 
diff --git a/pkgs/development/libraries/gloox/default.nix b/pkgs/development/libraries/gloox/default.nix
index 8fc57d865fd7..69243a13ef30 100644
--- a/pkgs/development/libraries/gloox/default.nix
+++ b/pkgs/development/libraries/gloox/default.nix
@@ -14,6 +14,13 @@ stdenv.mkDerivation rec{
     sha256 = "1jgrd07qr9jvbb5hcmhrqz4w4lvwc51m30jls1fgxf1f5az6455f";
   };
 
+  # needed since gcc12
+  postPatch = ''
+    sed '1i#include <ctime>' -i \
+      src/tests/{tag/tag_perf.cpp,zlib/zlib_perf.cpp} \
+      src/examples/*.cpp
+  '';
+
   buildInputs = [ ]
     ++ lib.optional zlibSupport zlib
     ++ lib.optional sslSupport openssl
diff --git a/pkgs/servers/x11/xorg/overrides.nix b/pkgs/servers/x11/xorg/overrides.nix
index cc32e29188f7..6ce9243d2cf2 100644
--- a/pkgs/servers/x11/xorg/overrides.nix
+++ b/pkgs/servers/x11/xorg/overrides.nix
@@ -592,6 +592,7 @@ self: super:
 
   xf86videovmware = super.xf86videovmware.overrideAttrs (attrs: {
     buildInputs =  attrs.buildInputs ++ [ mesa mesa.driversdev llvm ]; # for libxatracker
+    NIX_CFLAGS_COMPILE = [ "-Wno-error=address" ]; # gcc12
     meta = attrs.meta // {
       platforms = ["i686-linux" "x86_64-linux"];
     };