diff --git a/sw/host/meson.build b/sw/host/meson.build
index e48cab9..2c6cd2c 100644
--- a/sw/host/meson.build
+++ b/sw/host/meson.build
@@ -5,3 +5,4 @@
 subdir('vendor')
 subdir('spiflash')
 subdir('rom_ext_image_tools')
+subdir('opentitantool')
diff --git a/sw/host/opentitantool/meson.build b/sw/host/opentitantool/meson.build
new file mode 100644
index 0000000..432b3ea
--- /dev/null
+++ b/sw/host/opentitantool/meson.build
@@ -0,0 +1,63 @@
+# Copyright lowRISC contributors.
+# Licensed under the Apache License, Version 2.0, see LICENSE for details.
+# SPDX-License-Identifier: Apache-2.0
+
+cargo = find_program('cargo', required: false, disabler: true)
+
+build_type = 'release'
+build_dir = meson.current_build_dir()
+manifest_path = meson.current_source_dir() / 'Cargo.toml'
+
+# CARGO FLAGS:
+# These flags will only apply to the final binary, and won't get propogated
+# to the dependency crate builds.
+cargo_flags_array = [
+  'manifest-path=' + manifest_path,
+  'target-dir=' + build_dir,
+   build_type,
+]
+
+cargo_flags = ''
+foreach flag : cargo_flags_array
+  cargo_flags += '--' + flag + ' '
+endforeach
+
+# RUSTFLAGS:
+# These flags will apply to all the dependencies, as well as the final
+# binary. Linker and linker flavor amongst other things can be passed through
+# these flags.
+rust_flags = ''
+
+# The cargo invocation script.
+cargo_invoke_cmd = meson.source_root() / 'util/invoke_cargo.sh'
+
+# Note: the opentitantool depends on opentitanlib. This dependency is handled
+# by cargo itself but perhaps should be handled by the build system.
+opentitantool = custom_target(
+  'opentitantool',
+  command: [
+    cargo_invoke_cmd,
+    cargo,
+    cargo_flags,
+    rust_flags,
+    meson.source_root(),
+    meson.build_root(),
+  ],
+  depend_files: [
+    cargo_invoke_cmd,
+    manifest_path,
+  ],
+  output: '.',
+  console: true,
+  build_always_stale: true,
+  build_by_default: true,
+)
+
+opentitantool_export = custom_target(
+  'opentitantool_export',
+  command: ['cp', '@INPUT@' / build_type / 'opentitantool', '@OUTPUT@'],
+  input: opentitantool,
+  output: 'opentitantool',
+  build_always_stale: true,
+  build_by_default: true,
+)