I’m fearly new to node addon modules and trying to build a litle gtk interface in it. It builds succesfull but at runtime, I get

node: symbol lookup error: /home/laurens/Documenten/Code/wall_controller/build/Release/display.node: undefined symbol: gtk_init

I figured that the ldflags are not working but I can’t figure out why

binding.gyp

{
  "targets": [
    {
      "target_name": "display",
      "sources": [
        "ui/main.cpp"
      ],
      "cflags": [
        "-g",
        "<!(pkg-config --cflags gtk+-3.0 webkit2gtk-4.1)"
      ],
      "ldflags": [
        "<!(pkg-config --libs gtk+-3.0 webkit2gtk-4.1)"
      ],
      "include_dirs": [
        "<!(node -e "require('node-addon-api').include")"
      ],
      'dependencies': [
        "<!(node -p "require('node-addon-api').targets"):node_addon_api_except",
      ],
      "defines": [
        "NAPI_VERSION=3"
      ]
    }
  ]
}

ldd build/Release/display.node

linux-vdso.so.1 (0x00007fffe3ffc000)
libgtk3-nocsd.so.0 => /lib/x86_64-linux-gnu/libgtk3-nocsd.so.0 (0x00007a1f7b5e0000)
libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007a1f7b200000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007a1f7b5b3000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007a1f7ae00000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007a1f7b4ca000)
/lib64/ld-linux-x86-64.so.2 (0x00007a1f7b612000)

pkg-config –libs gtk+-3.0 webkit2gtk-4.1

-lwebkit2gtk-4.1 -lgtk-3 -lgdk-3 -lz -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -latk-1.0 -lcairo-gobject -lcairo -lgdk_pixbuf-2.0 -lsoup-3.0 -Wl,--export-dynamic -lgmodule-2.0 -pthread -lglib-2.0 -lgio-2.0 -ljavascriptcoregtk-4.1 -lgobject-2.0 -lglib-2.0

To me it all looks fine except for the LDD output. What am I missing?