opencv: Fix OpenCV build on non NixOS platform

OpenCV's CMakeFile will use libraries in /lib and /lib64 if it can find libraries from those paths. However, it causes build failure because nix detects impure paths being used.
2017-05-16 05:02:00 +08:00
parent 37cb24a318
commit b496ffbe55
2 changed files with 11 additions and 0 deletions
@@ -35,6 +35,11 @@ stdenv.mkDerivation rec {
      ./no-build-info.patch
    ];

+  # This prevents cmake from using libraries in impure paths (which causes build failure on non NixOS)
+  postPatch = ''
+    sed -i '/Add these standard paths to the search paths for FIND_LIBRARY/,/^\s*$/{d}' CMakeLists.txt
+  '';
+
  outputs = [ "out" "dev" ];

  buildInputs =