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-rw-r--r--pkgs/os-specific/linux/read-edid/default.nix9
-rw-r--r--pkgs/os-specific/linux/read-edid/fno-common.patch22
2 files changed, 28 insertions, 3 deletions
diff --git a/pkgs/os-specific/linux/read-edid/default.nix b/pkgs/os-specific/linux/read-edid/default.nix
index 7f6d224ff4d..6e040d3cbff 100644
--- a/pkgs/os-specific/linux/read-edid/default.nix
+++ b/pkgs/os-specific/linux/read-edid/default.nix
@@ -9,14 +9,17 @@ stdenv.mkDerivation rec {
     sha256 = "0vqqmwsgh2gchw7qmpqk6idgzcm5rqf2fab84y7gk42v1x2diin7";
   };
 
+  patches = [ ./fno-common.patch ];
+
+  postPatch = ''
+    substituteInPlace CMakeLists.txt --replace 'COPYING' 'LICENSE'
+  '';
+
   nativeBuildInputs = [ cmake ];
   buildInputs = lib.optional stdenv.hostPlatform.isx86 libx86;
 
   cmakeFlags = [ "-DCLASSICBUILD=${if stdenv.hostPlatform.isx86 then "ON" else "OFF"}" ];
 
-  patchPhase = ''
-    substituteInPlace CMakeLists.txt --replace 'COPYING' 'LICENSE'
-  '';
 
   meta = with lib; {
     description = "Tool for reading and parsing EDID data from monitors";
diff --git a/pkgs/os-specific/linux/read-edid/fno-common.patch b/pkgs/os-specific/linux/read-edid/fno-common.patch
new file mode 100644
index 00000000000..336b48b66ad
--- /dev/null
+++ b/pkgs/os-specific/linux/read-edid/fno-common.patch
@@ -0,0 +1,22 @@
+--- a/get-edid/classic.c
++++ b/get-edid/classic.c
+@@ -26,7 +26,7 @@ typedef byte* real_ptr;
+ #define dosmemput(buffer,length,offset) memcpy(offset,buffer,length)
+ 
+ #define display(...) if (quiet == 0) { fprintf(stderr, __VA_ARGS__); }
+-int quiet;
++extern int quiet;
+ 
+ real_ptr far_ptr_to_real_ptr( uint32 farptr )
+ {
+--- a/get-edid/i2c.c
++++ b/get-edid/i2c.c
+@@ -15,7 +15,7 @@
+ 
+ //Ideas (but not too much actual code) taken from i2c-tools. Thanks guys.
+ 
+-int quiet;
++extern int quiet;
+ 
+ #define display(...) if (quiet == 0) { fprintf(stderr, __VA_ARGS__); }
+