From 950e2a7efd3cb5c4a89e1c5cd290db8098ef0bbc Mon Sep 17 00:00:00 2001
From: Matthew Leach <dev@mattleach.net>
Date: Thu, 8 Jul 2021 22:18:53 +0100
Subject: [PATCH] fltk14: fix build on apple silicon

For some reason having a file called `VERSION` in the package root directory
appears to be interfering with the build process:

```
Compiling Fl_cocoa.mm...
In file included from Fl_cocoa.mm:39:
In file included from ../FL/x.H:32:
In file included from ../FL/mac.H:50:

[...]

In file included from /nix/store/xhvrrnz8n6dxizgig46ijh59m7mfy261-libcxx-11.1.0-dev/include/c++/v1/cstddef:37:
../version:1:1: error: expected unqualified-id
1.4.0
^
```

By removing the file, the build succeeds.
---
 pkgs/development/libraries/fltk/1.4.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/fltk/1.4.nix b/pkgs/development/libraries/fltk/1.4.nix
index 2db0aea3ecf8..38926f298d40 100644
--- a/pkgs/development/libraries/fltk/1.4.nix
+++ b/pkgs/development/libraries/fltk/1.4.nix
@@ -35,7 +35,10 @@ stdenv.mkDerivation {
     "--enable-xft"
   ];
 
-  preConfigure = "make clean";
+  preConfigure = ''
+    make clean
+    rm VERSION
+  '';
 
   enableParallelBuilding = true;