feat: tested nl-sys, and it links

system-libs.nix

@@ -1,4 +1,4 @@
-{ pkgs, libpcap-src, winpcap-installer, freebsd-libs-packed }:
+{ pkgs, libnl-src, libpcap-src, winpcap-installer, freebsd-libs-packed }:
 let
   freebsd-libs = pkgs.stdenv.mkDerivation {
     name = "freebsd-libs";
@@ -44,31 +44,64 @@ in {
   libnl = pkgs.stdenv.mkDerivation {
     name = "libnl-static";
 
-    buildInputs = with pkgs; [ autoconf automake libtool ];
+    nativeBuildInputs = with pkgs; [
+      musl
+      clang
+      autoconf
+      automake
+      libtool
+      pkg-config
+      autoconf-archive
+      flex
+      bison
+    ];
 
+    src = libnl-src;
+
+    configurePhase = ''
+      export CC=musl-clang
+      export CXX=musl-clang
+      aclocal
+      autoreconf -vi
+      ./configure \
+          --enable-static \
+          --disable-shared
+    '';
+
+    buildPhase = ''
+      export CC=musl-clang
+      export CXX=musl-clang
+      make
+    '';
+
+    installPhase = ''
+      mkdir -p $out/lib
+      cp lib/.libs/*.a $out/lib
+    '';
   };
 
   libpcap-linux = pkgs.stdenv.mkDerivation {
     name = "libpcap-static-linux";
 
-    buildInputs = with pkgs; [ automake bison cmake flex ];
+    buildInputs = with pkgs; [ clang automake bison cmake flex musl ];
 
     src = libpcap-src;
 
     configurePhase = ''
+      export CC=musl-clang
       cmake \
-            -DCMAKE_BUILD_TYPE=MinSizeRel \
-            -DBUILD_SHARED_LIBS=OFF \
-            -DDISABLE_BLUETOOTH=ON \
-            -DDISABLE_DAG=ON \
-            -DDISABLE_DBUS=ON \
-            -DDISABLE_DPDK=ON \
-            -DDISABLE_NETMAP=ON \
-            -DDISABLE_RDMA=ON \
-            -DDISABLE_LINUX_USBMON=ON \
-            -DDISABLE_SNF=ON \
-            -DPCAP_TYPE=linux \
-            .
+          -DCMAKE_BUILD_TYPE=MinSizeRel \
+          -DBUILD_SHARED_LIBS=OFF \
+          -DDISABLE_BLUETOOTH=ON \
+          -DDISABLE_DAG=ON \
+          -DDISABLE_DBUS=ON \
+          -DDISABLE_DPDK=ON \
+          -DDISABLE_NETMAP=ON \
+          -DDISABLE_RDMA=ON \
+          -DDISABLE_LINUX_USBMON=ON \
+          -DDISABLE_SNF=ON \
+          -DPCAP_TYPE=linux \
+          .
     '';
 
     buildPhase = ''
@@ -97,19 +130,21 @@ in {
     src = libpcap-src;
 
     configurePhase = ''
+      export CC=x86_64-unknown-freebsd-clang
+      export CXX=x86_64-unknown-freebsd-clang++
       cmake \
-            -DCMAKE_TOOLCHAIN_FILE=${bsd-toolchain} \
-            -DCMAKE_BUILD_TYPE=MinSizeRel \
-            -DBUILD_SHARED_LIBS=OFF \
-            -DDISABLE_BLUETOOTH=ON \
-            -DDISABLE_DAG=ON \
-            -DDISABLE_DBUS=ON \
-            -DDISABLE_DPDK=ON \
-            -DDISABLE_NETMAP=ON \
-            -DDISABLE_RDMA=ON \
-            -DDISABLE_SNF=ON \
-            -DPCAP_TYPE=bpf \
-            .
+          -DCMAKE_TOOLCHAIN_FILE=${bsd-toolchain} \
+          -DCMAKE_BUILD_TYPE=MinSizeRel \
+          -DBUILD_SHARED_LIBS=OFF \
+          -DDISABLE_BLUETOOTH=ON \
+          -DDISABLE_DAG=ON \
+          -DDISABLE_DBUS=ON \
+          -DDISABLE_DPDK=ON \
+          -DDISABLE_NETMAP=ON \
+          -DDISABLE_RDMA=ON \
+          -DDISABLE_SNF=ON \
+          -DPCAP_TYPE=bpf \
+          .
     '';
 
     buildPhase = ''