project('libfprint', [ 'c', 'cpp' ],
    version: '1.90.0',
    license: 'LGPLv2.1+',
    default_options: [
        'buildtype=debugoptimized',
        'warning_level=1',
        'c_std=c99',
    ],
    meson_version: '>= 0.46.0')

gnome = import('gnome')

libfprint_conf = configuration_data()

cc = meson.get_compiler('c')
cpp = meson.get_compiler('cpp')
host_system = host_machine.system()
glib_min_version = '2.56'

glib_version_def = 'GLIB_VERSION_@0@_@1@'.format(
    glib_min_version.split('.')[0], glib_min_version.split('.')[1])
common_cflags = cc.get_supported_arguments([
    '-Wall',
    '-Wtype-limits',
    '-Wundef',
    '-Wunused',
    '-Wstrict-prototypes',
    '-Werror-implicit-function-declaration',
    '-Wshadow',
    '-DGLIB_VERSION_MIN_REQUIRED=' + glib_version_def,
    '-DGLIB_VERSION_MAX_ALLOWED=' + glib_version_def,
    '-D_GNU_SOURCE',
    '-DG_LOG_DOMAIN="libfprint"',
])
c_cflags = cc.get_supported_arguments([
    '-fgnu89-inline',
    '-std=gnu99',
])
add_project_arguments(common_cflags + c_cflags, language: 'c')
add_project_arguments(common_cflags, language: 'cpp')

# maintaining compatibility with the previous libtool versioning
# current = binary - interface
# revision = interface
soversion = 2
current = 0
revision = 0
libversion = '@0@.@1@.@2@'.format(soversion, current, revision)

# Dependencies
glib_dep = dependency('glib-2.0', version: '>=' + glib_min_version)
gio_dep = dependency('gio-unix-2.0', version: '>=' + glib_min_version)
gusb_dep = dependency('gusb', version: '>= 0.3.0')
mathlib_dep = cc.find_library('m', required: false)

# Drivers
drivers = get_option('drivers').split(',')
virtual_drivers = [ 'virtual_image' ]
default_drivers = [
    'upektc_img',
    'vfs5011',
    'aes3500',
    'aes4000',
    'aes1610',
    'aes1660',
    'aes2660',
    'aes2501',
    'aes2550',
    'vfs101',
    'vfs301',
    'vfs0050',
    'etes603',
    'vcom5s',
    'synaptics',
    'elan',
    'uru4000',
    'upektc',
    'upeksonly',
    'upekts',
]

all_drivers = default_drivers + virtual_drivers

if drivers == [ 'all' ]
    drivers = all_drivers
endif

if drivers == [ 'default' ]
    drivers = default_drivers
endif

if drivers.length() == 0 or drivers[0] == ''
    error('Cannot build libfprint without drivers, please specify a valid value for the drivers option')
endif

nss_dep = dependency('', required: false)
imaging_dep = dependency('', required: false)
libfprint_conf.set10('HAVE_PIXMAN', false)
foreach driver: drivers
    if driver == 'uru4000'
        nss_dep = dependency('nss', required: false)
        if not nss_dep.found()
            error('NSS is required for the URU4000/URU4500 driver')
        endif
    endif
    if driver == 'aes3500' or driver == 'aes4000'
        imaging_dep = dependency('pixman-1', required: false)
        if not imaging_dep.found()
            error('pixman is required for imaging support')
        endif

        libfprint_conf.set10('HAVE_PIXMAN', true)
    endif
    if not all_drivers.contains(driver)
        error('Invalid driver \'' + driver + '\'')
    endif
endforeach

# Export the drivers' types to the core code
drivers_type_list = '#include <glib-object.h>\n'
drivers_type_func = 'void fpi_get_driver_types(GArray *drivers)\n{\n\tGType t;\n'
foreach driver: drivers
    drivers_type_list += 'extern GType (fpi_device_' + driver + '_get_type) (void);\n'
    drivers_type_func += '	t = fpi_device_' + driver + '_get_type(); g_array_append_val (drivers, t);\n'
endforeach
drivers_type_list += ''
drivers_type_func += '};'

root_inc = include_directories('.')

if get_option('udev_rules')
    udev_rules_dir = get_option('udev_rules_dir')

    if udev_rules_dir == 'auto'
        udev_dep = dependency('udev')
        udev_rules_dir = udev_dep.get_pkgconfig_variable('udevdir') + '/rules.d'
    endif
endif

if get_option('gtk-examples')
    gnome = import('gnome')

    gtk_dep = dependency('gtk+-3.0', required: false)
    if not gtk_dep.found()
        error('GTK+ 3.x is required for GTK+ examples')
    endif
endif

configure_file(output: 'config.h', configuration: libfprint_conf)

subdir('libfprint')
subdir('examples')
if get_option('doc')
    gnome = import('gnome')
    subdir('doc')
endif
if get_option('gtk-examples')
    subdir('demo')
endif

# The tests require introspeciton support to run
if get_option('introspection')
    subdir('tests')
endif

pkgconfig = import('pkgconfig')
pkgconfig.generate(
    name: 'libfprint',
    description: 'Generic C API for fingerprint reader access',
    version: meson.project_version(),
    libraries: libfprint,
    subdirs: 'libfprint',
    filebase: 'libfprint2',
    install_dir: join_paths(get_option('libdir'), 'pkgconfig'))