Merge pull request #71669 from nh2/issue-70872-srt-wrong-cmake-pc-inc…

…lude-path

srt: Fix wrong `srt.pc` include path

pkgs/development/libraries/srt/default.nix

@@ -18,6 +18,10 @@ stdenv.mkDerivation rec {
   buildInputs = [ openssl ];
 
   cmakeFlags = [
+    # the cmake package does not handle absolute CMAKE_INSTALL_INCLUDEDIR correctly
+    # (setting it to an absolute path causes include files to go to $out/$out/include,
+    #  because the absolute path is interpreted with root at $out).
+    "-DCMAKE_INSTALL_INCLUDEDIR=include"
     # TODO Remove this when https://github.com/Haivision/srt/issues/538 is fixed and available to nixpkgs
     # Workaround for the fact that srt incorrectly disables GNUInstallDirs when LIBDIR is specified,
     # see https://github.com/NixOS/nixpkgs/pull/54463#discussion_r249878330