From 26d078be2c841c8fcee3bd3ca4b96d753ac5d934 Mon Sep 17 00:00:00 2001
From: Ben Siraphob <bensiraphob@gmail.com>
Date: Thu, 29 Jul 2021 13:48:24 +0700
Subject: [PATCH] knightos-scas: fix cross-compilation and enable documentation

---
 .../tools/knightos/scas/default.nix            | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/tools/knightos/scas/default.nix b/pkgs/development/tools/knightos/scas/default.nix
index 255ecf798d8..221c5a0d12d 100644
--- a/pkgs/development/tools/knightos/scas/default.nix
+++ b/pkgs/development/tools/knightos/scas/default.nix
@@ -1,4 +1,8 @@
-{ fetchFromGitHub, lib, stdenv, cmake }:
+{ fetchFromGitHub, lib, stdenv, cmake, buildPackages, asciidoc, libxslt }:
+
+let
+  isCrossCompiling = stdenv.hostPlatform != stdenv.buildPlatform;
+in
 
 stdenv.mkDerivation rec {
   pname = "scas";
@@ -12,10 +16,18 @@ stdenv.mkDerivation rec {
   };
 
   cmakeFlags = [ "-DSCAS_LIBRARY=1" ];
-
+  postPatch = ''
+    substituteInPlace CMakeLists.txt \
+      --replace "TARGETS scas scdump scwrap" "TARGETS scas scdump scwrap generate_tables"
+  '';
   strictDeps = true;
 
-  nativeBuildInputs = [ cmake ];
+  depsBuildBuild = lib.optionals isCrossCompiling [ buildPackages.knightos-scas ];
+  nativeBuildInputs = [ asciidoc libxslt.bin cmake ];
+  postInstall = ''
+    cd ..
+    make DESTDIR=$out install_man
+  '';
 
   meta = with lib; {
     homepage    = "https://knightos.org/";