Don't bother with dynamic libraries

lib/types/meson.build

-# SPDX-FileCopyrightText: 2018-2019 Bruce Cowan <bruce@bcowan.me.uk>
+# SPDX-FileCopyrightText: 2018-2020 Bruce Cowan <bruce@bcowan.me.uk>
 #
 # SPDX-License-Identifier: CC0-1.0
 
 types_src = ['array.c', 'hashtable.c', 'slist.c']
-types_lib = library('types', types_src, dependencies: [libm, utils_dep])
+types_lib = static_library('types', types_src, dependencies: [libm, utils_dep])
 types_dep = declare_dependency(link_with: types_lib, include_directories: '.')

lib/utils/meson.build

-# SPDX-FileCopyrightText: 2019 Bruce Cowan
+# SPDX-FileCopyrightText: 2019-2020 Bruce Cowan
 #
 # SPDX-License-Identifier: CC0-1.0
 
-utils_lib = library('utils', ['mem.c', 'utils.c'], dependencies: config_dep)
+utils_lib = static_library('utils', ['mem.c', 'utils.c'], dependencies: config_dep)
 utils_dep = declare_dependency(link_with: utils_lib,
   include_directories: '.')