move to meson&ninja (#1)

meson.build

@@ -0,0 +1,120 @@
+project(
+        'dbtool',
+        'cpp',
+        license: 'GPL',
+        version: '1.9.1',
+        meson_version: '>=1.3',
+        default_options: [
+                'warning_level=2',
+                'werror=true',
+        ],
+)
+
+add_project_arguments(
+        [
+                '-Wno-unused-parameter',
+                '-Wno-unused-result',
+                '-Wno-missing-braces',
+                '-Wno-format-zero-length',
+                '-Wvla',
+                '-Wno-sign-compare',
+                '-Wno-narrowing'
+        ],
+        language: 'cpp',
+)
+
+
+cpp = meson.get_compiler('cpp')
+conf = configuration_data()
+dbtool_inc = include_directories('.')
+
+if host_machine.system().startswith('freebsd')
+  dbtool_inc = include_directories('.', '/usr/local/include')
+  add_project_link_arguments('LDFLAGS=/usr/local/lib')
+endif
+
+
+# check for funcs.
+foreach func : ['getopt', 'fdopen', 'fgetc', 'getenv', 'getpass']
+    conf.set('HAVE_'+func.to_upper(), cpp.has_function(func, prefix : '#include <unistd.h>\n#include <stdio.h>\n#include <stdlib.h>'))
+endforeach
+
+
+
+# check for libraries with CMAKE or pkg-config
+pcre2 = dependency('libpcre2-8')
+
+
+# manually check for libraries
+lib_berkeley = cpp.find_library('db_cxx', required: false,
+               dirs : ['/usr', '/usr/local'])
+inc_berkeley = include_directories('/usr', '/usr/local')
+
+lib_gdbm = cpp.find_library('gdbm', required: false,
+               dirs : ['/usr', '/usr/local'])
+inc_gdbm = include_directories('/usr', '/usr/local')
+
+
+if not lib_gdbm.found() and not lib_berkeley.found()
+  error('neither GDBM nor BerkeleyDB are installed')
+endif
+
+# check commandline options
+prefix = get_option('prefix')
+
+if get_option('buildtype') == 'debug'
+    conf.set('DEBUG', '1')
+endif
+
+
+
+# setup conf map
+version = '@0@'.format(meson.project_version())
+
+conf.set('HAVE_LIBPCRE', pcre2.found())
+conf.set('HAVE_BERKELEY', lib_berkeley.found())
+conf.set('HAVE_GDBM', lib_gdbm.found())
+conf.set('prefix', prefix)
+conf.set('VERSION', version)
+
+
+# write out the config header
+m = configure_file(
+  input : 'platform.h.in',
+  output : 'platform.h',
+  configuration : conf,
+)
+
+
+# code
+dbtool_sources = files(
+  'cipher.cc',
+  'config.cc',
+  'dbtool.cc',
+  'digest.cc',
+  'engine.cc',
+  'rijndael.cc'
+)
+
+# add dependencies, manual libs are added directly below
+dbtool_deps = [
+  pcre2
+]
+
+
+executable(
+        'dbtool',
+        [dbtool_sources],
+        include_directories: [dbtool_inc, inc_berkeley, inc_gdbm],
+        dependencies: [dbtool_deps, lib_berkeley, lib_gdbm],
+        install: true
+)
+
+# build manual page
+pod2man = find_program('pod2man', native: true)
+if pod2man.found()
+  res = run_command(pod2man.full_path(), 'dbtool.pod', 'dbtool.1', check:true)
+  if res.returncode() == 0
+    install_man('dbtool.1')
+  endif
+endif