diff --git a/build.zig b/build.zig
index c849e83..8458e57 100644
--- a/build.zig
+++ b/build.zig
@@ -1,4 +1,5 @@
 const std = @import("std");
+const builtin = std.builtin;
 const zbs = std.build;
 
 pub fn build(b: *zbs.Builder) void {
@@ -42,6 +43,24 @@ pub fn build(b: *zbs.Builder) void {
     cmph.addIncludeDir("deps/cmph/src");
     cmph.addIncludeDir("include/deps/cmph");
 
+    const bdz = b.addStaticLibrary("bdz", null);
+    bdz.setTarget(target);
+    bdz.setBuildMode(mode);
+    bdz.linkLibC();
+    bdz.addCSourceFiles(&.{
+        "deps/cmph/src/bdz.c",
+        "deps/cmph/src/bdz_ph.c",
+        "deps/cmph/src/hash.c",
+        "deps/cmph/src/jenkins_hash.c",
+    }, &.{
+        "-W",
+        "-Wno-unused-function",
+        //"-DDEBUG",
+    });
+    bdz.omit_frame_pointer = true;
+    bdz.addIncludeDir("deps/cmph/src");
+    bdz.addIncludeDir("include/deps/cmph");
+
     {
         const exe = b.addExecutable("turbo-unix2db", "src/unix2db.zig");
         exe.setTarget(target);
@@ -57,6 +76,22 @@ pub fn build(b: *zbs.Builder) void {
         exe.install();
     }
 
+    {
+        const so = b.addSharedLibrary("nss_turbo", "src/libnss.zig", .{
+            .versioned = builtin.Version{
+                .major = 2,
+                .minor = 0,
+                .patch = 0,
+            },
+        });
+        so.linkLibC();
+        so.linkLibrary(bdz);
+        so.addIncludeDir("deps/cmph/src");
+        so.setTarget(target);
+        so.setBuildMode(mode);
+        so.install();
+    }
+
     {
         const src_test = b.addTest("src/test_all.zig");
         addCmphDeps(src_test, cmph);
diff --git a/src/libnss.zig b/src/libnss.zig
index 77aa448..2d42c18 100644
--- a/src/libnss.zig
+++ b/src/libnss.zig
@@ -28,7 +28,7 @@ const ENV_OMIT_MEMBERS = "TURBONSS_OMIT_MEMBERS";
 
 export var turbonss_db_path: [:0]const u8 = "/etc/turbonss/db.turbo";
 
-pub var log_level: std.log.Level = .err;
+//pub var log_level: std.log.Level = .err;
 
 // State is a type of the global variable holding the process state:
 // the DB handle and all the iterators.
@@ -52,23 +52,23 @@ var global_init = once(init);
 
 // assigns State from environment variables et al
 fn init() void {
-    if (os.getenvZ(ENV_LOGLEVEL)) |env| {
-        const got = mem.sliceTo(env, 0);
-        if (mem.eql(u8, got, "0")) {
-            log_level = .err;
-        } else if (mem.eql(u8, got, "1")) {
-            log_level = .warn;
-        } else if (mem.eql(u8, got, "2")) {
-            log_level = .info;
-        } else if (mem.eql(u8, got, "3")) {
-            log_level = .debug;
-        } else {
-            std.debug.print(
-                "warning: unrecognized {s}={s}. Expected between 0 and 3\n",
-                .{ ENV_LOGLEVEL, got },
-            );
-        }
-    }
+    //if (os.getenvZ(ENV_LOGLEVEL)) |env| {
+    //    const got = mem.sliceTo(env, 0);
+    //    if (mem.eql(u8, got, "0")) {
+    //        log_level = .err;
+    //    } else if (mem.eql(u8, got, "1")) {
+    //        log_level = .warn;
+    //    } else if (mem.eql(u8, got, "2")) {
+    //        log_level = .info;
+    //    } else if (mem.eql(u8, got, "3")) {
+    //        log_level = .debug;
+    //    } else {
+    //        std.debug.print(
+    //            "warning: unrecognized {s}={s}. Expected between 0 and 3\n",
+    //            .{ ENV_LOGLEVEL, got },
+    //        );
+    //    }
+    //}
 
     const omit_members = blk: {
         if (os.getenvZ(ENV_OMIT_MEMBERS)) |env| {