meson.build

project('pidgin', 'c', meson_version : '>=0.37.0')

# UPDATING VERSION NUMBERS FOR RELEASES
#
# purple_micro_version += 1
#
# If any functions have been added to libpurple, Pidgin, or Finch:
#   purple_micro_version = 0
#   purple_minor_version += 1
#   purple_lt_current += 1
#
# If backwards compatibility has been broken in libpurple, Pidgin, or Finch:
#   purple_micro_version = 0
#   purple_minor_version = 0
#   purple_major_version += 1;
#   purple_lt_current += 1
#
# purple_version_suffix should be similar to one of the following:
#   For beta releases:          'beta2'
#   For code under development: 'devel'
#   For production releases:    ''
#
# Make sure to update finch/libgnt/meson.build with libgnt version changes.
#
purple_lt_current = 20
purple_major_version = 3
purple_minor_version = 0
purple_micro_version = 0
purple_version_suffix = 'devel'
purple_version = '@0@.@1@.@2@'.format(purple_major_version,
                                      purple_minor_version,
                                      purple_micro_version)
purple_display_version = '@0@@1@'.format(purple_version,
                                         purple_version_suffix)

add_project_arguments('-DHAVE_CONFIG_H=1', language : 'c')
conf = configuration_data()
man_conf = configuration_data()
purple_h_conf = configuration_data()
version_conf = configuration_data()

conf.set_quoted('PACKAGE', meson.project_name())
conf.set_quoted('PACKAGE_NAME', meson.project_name())
conf.set_quoted('VERSION', purple_display_version)

version_conf.set('PURPLE_MAJOR_VERSION', purple_major_version)
version_conf.set('PURPLE_MINOR_VERSION', purple_minor_version)
version_conf.set('PURPLE_MICRO_VERSION', purple_micro_version)
version_conf.set('PURPLE_VERSION', purple_display_version)
version_conf.set('PURPLE_API_VERSION',
                 purple_lt_current - purple_minor_version)

PURPLE_LIB_VERSION = '@0@.@1@.@2@'.format(purple_lt_current - purple_minor_version,
                                          purple_minor_version,
                                          purple_micro_version)

package_revision = vcs_tag(
    input : 'package_revision.h.in',
    output : 'package_revision.h',
    fallback : meson.project_version())

# For man pages.
man_conf.set('VERSION', purple_display_version)
man_conf.set('prefix', get_option('prefix'))

# Used for pkg-config files.
pkgconfig = import('pkgconfig')

sedpath = find_program('sed')

# Storing build arguments
if meson.version().version_compare('>=0.42.0')
	meson.add_postconf_script('mkmesonconf.py')
	conf.set('HAVE_MESON_CONFIG', true)
endif

# Checks for programs.
compiler = meson.get_compiler('c')

# Check for Sun compiler
SUNCC = compiler.compiles('void main() {__SUNPRO_C;};')

# Check for Win32
if host_machine.system() == 'windows'
	windows = import('windows')

	IS_WIN32 = true
	ws2_32 = compiler.find_library('ws2_32')
	dnsapi = compiler.find_library('dnsapi')
	if build_machine.system() != 'windows'
		conf.set('IS_WIN32_CROSS_COMPILED', true)
	endif
	conf.set('WIN32_LEAN_AND_MEAN', true)

	conf.set('LIBPIDGIN_DLL_NAMEW',
	    'L"libpidgin-@0@.dll"'.format(purple_lt_current))
else
	IS_WIN32 = false
	ws2_32 = []
	dnsapi = []
endif

# Checks for header files.
# AC_HEADER_SYS_WAIT:
conf.set('HAVE_SYS_WAIT_H', compiler.has_header('sys/wait.h'))

foreach h : ['fcntl.h', 'unistd.h', 'stdint.h']
	if compiler.has_header(h)
		conf.set('HAVE_' + h.to_upper().underscorify(), true)
	else
		error(h + ' is required.')
	endif
endforeach

# Checks for typedefs, structures, and compiler characteristics.
time_t_size = compiler.sizeof('time_t',
    prefix : '''
#include <stdio.h>
#include <time.h>
''')
conf.set('SIZEOF_TIME_T', time_t_size)

conf.set('WORDS_BIGENDIAN', host_machine.endian() != 'little')

# Check for directories
if IS_WIN32
	foreach dir : ['bin', 'lib', 'data', 'sysconf', 'locale']
		path = join_paths(get_option('prefix'), get_option(dir + 'dir'))
		conf.set_quoted('WIN32_FHS_@0@DIR'.format(dir.to_upper()), path)
	endforeach

	conf.set('PURPLE_LIBDIR',
		 'wpurple_lib_dir("purple-@0@")'.format(purple_major_version))
	conf.set('PIDGIN_LIBDIR',
		 'wpurple_lib_dir("pidgin-@0@")'.format(purple_major_version))
	conf.set('FINCH_LIBDIR',
		 'wpurple_lib_dir("finch-@0@")'.format(purple_major_version))

	conf.set('PURPLE_DATADIR', 'wpurple_data_dir()')
	conf.set('PURPLE_SYSCONFDIR', 'wpurple_sysconf_dir()')
	conf.set('PURPLE_LOCALEDIR', 'wpurple_locale_dir()')
else
	foreach dir : ['data', 'sysconf', 'locale']
		path = join_paths(get_option('prefix'), get_option(dir + 'dir'))
		conf.set_quoted('PURPLE_@0@DIR'.format(dir.to_upper()), path)
	endforeach

	common_libdir = join_paths(get_option('prefix'), get_option('libdir'))
	conf.set_quoted('PURPLE_LIBDIR',
	                join_paths(common_libdir,
	                           'purple-@0@'.format(purple_major_version)))
	conf.set_quoted('PIDGIN_LIBDIR',
	                join_paths(common_libdir,
	                           'pidgin-@0@'.format(purple_major_version)))
	conf.set_quoted('FINCH_LIBDIR',
	                join_paths(common_libdir,
	                           'finch-@0@'.format(purple_major_version)))
endif

abslibdir = join_paths(get_option('prefix'), get_option('libdir'))
PURPLE_PLUGINDIR = join_paths(abslibdir, 'purple-@0@'.format(purple_major_version))
conf.set_quoted('PURPLE_PLUGINDIR', PURPLE_PLUGINDIR)
PIDGIN_PLUGINDIR = join_paths(abslibdir, 'pidgin-@0@'.format(purple_major_version))
conf.set_quoted('PIDGIN_PLUGINDIR', PIDGIN_PLUGINDIR)
FINCH_PLUGINDIR = join_paths(abslibdir, 'finch-@0@'.format(purple_major_version))
conf.set_quoted('FINCH_PLUGINDIR', FINCH_PLUGINDIR)

# Check for inet_aton
if not IS_WIN32
	if not compiler.has_function('inet_aton')
		if not compiler.has_function('inet_aton', args : '-lresolv')
			# FIXME: Someone needs to link with -lresolv if needed.
			error('inet_aton not found')
		endif
	endif
endif
if compiler.has_function('gethostent', args : '-lnsl')
	conf.set('HAVE_LIBNSL', true)
endif
if IS_WIN32
	conf.set('HAVE_GETADDRINFO', true)
	conf.set('HAVE_INET_NTOP', true)
else
	if not compiler.has_function('socket')
		if not compiler.has_function('socket', args : '-lsocket')
			error('socket not found')
		endif
	endif
	# If all goes well, by this point the previous two checks will have
	# pulled in -lsocket and -lnsl if we need them.
	if compiler.has_function('getaddrinfo')
		conf.set('HAVE_GETADDRINFO', true)
	else
		if compiler.has_function('getaddrinfo', args : '-lsocket -lnsl')
			conf.set('HAVE_GETADDRINFO', true)
			# FIXME: LIBS += declare_dependency(link_with : ['socket', 'nsl'])
		endif
	endif
	conf.set('HAVE_INET_NTOP',
	    compiler.has_function('inet_ntop'))
endif
conf.set('HAVE_GETIFADDRS',
    compiler.has_function('getifaddrs'))

# Check for socklen_t (in Unix98)
if IS_WIN32
	socket_header = 'ws2tcpip.h'
else
	socket_header = 'sys/socket.h'
endif
if not compiler.has_header_symbol(socket_header, 'socklen_t')
	code = '''
#include <sys/types.h>
#include <@0@>
int accept(int, struct sockaddr *, size_t *);
int main() {}
'''.format(socket_header)
	if compiler.compiles(code, name : 'socklen_t is size_t')
		conf.set('socklen_t', 'size_t')
	else
		conf.set('socklen_t', 'int')
	endif
endif

# Some systems do not have sa_len field for struct sockaddr.
conf.set('HAVE_STRUCT_SOCKADDR_SA_LEN',
    compiler.has_member('struct sockaddr', 'sa_len',
        prefix : '#include <@0@>'.format(socket_header)))

# Check for v6-only sockets
if IS_WIN32
	header = 'ws2tcpip.h'
else
	header = 'netinet/in.h'
endif
conf.set('HAVE_IPV6_V6ONLY',
    compiler.has_header_symbol(header, 'IPV6_V6ONLY'))

# Windows and Haiku do not use libm for the math functions, they are part
# of the C library
math = compiler.find_library('m')

# before gettexting, in case iconv matters
IOKIT = []
if host_machine.system() == 'darwin'
	if compiler.has_header('CoreFoundation/CoreFoundation.h')
		if compiler.has_header('IOKit/IOKitLib.h')
			conf.set('HAVE_IOKIT', true)
			IOKIT = dependency('appleframeworks',
			                   modules : ['IOKit', 'CoreFoundation'])
		endif
	endif

	if run_command('test', '-d', '/sw').returncode() == 0
		# FIXME: Not done...
		#CPPFLAGS="$CPPFLAGS -I/sw/include"
		#LDFLAGS="$LDFLAGS -L/sw/lib"
	endif
endif

# #######################################################################
# # Disable creation and installation of translation files
# #######################################################################

INSTALL_I18N = get_option('nls')

if INSTALL_I18N
	conf.set('ENABLE_NLS', true)

	i18n = import('i18n')

	subdir('po')
endif

# #######################################################################
# # Check for GLib 2.40 (required)
# #######################################################################
glib = dependency('glib-2.0', version : '>= 2.40.0')
gio = dependency('gio-2.0')
gobject = dependency('gobject-2.0')
gthread = dependency('gthread-2.0')
gnome = import('gnome')

if get_option('extraversion') != ''
	DISPLAY_VERSION = '@0@-@1@'.format(meson.project_version(),
	                                   get_option('extraversion'))
else
	DISPLAY_VERSION = meson.project_version()
endif
conf.set_quoted('DISPLAY_VERSION', DISPLAY_VERSION)

force_deps = not get_option('missing-dependencies')

# #######################################################################
# # Check for GTK+ 2.18 and other things used by the GTK UI
# #######################################################################
enable_gestures = get_option('gestures')
enable_gcr = get_option('gcr')

# #######################################################################
# Check Pidgin dependencies
# #######################################################################
if get_option('gtkui')
	gtk = dependency('gtk+-3.0', version : '>= 3.10.0')
	# We only really need Pango >= 1.4 for decent RTL support
	pango = dependency('pango', version : '>= 1.4.0')
	conf.set('HAVE_PANGO14', pango.found())

	webkit = dependency('webkitgtk-3.0', version : '>= 1.3.7')

	#######################################################################
	# Check if we should compile with enchant support
	#######################################################################
	# We need enchant for spell checking dictionary enumeration,
	# because webkit1 doesn't have this.
	enable_enchant = get_option('enchant')
	if enable_enchant
		enchant = dependency('enchant', required : force_deps)
		enable_enchant = enchant.found()
		conf.set('USE_ENCHANT', enable_enchant)
	else
		enchant = []
	endif

	#######################################################################
	# Check for GCR for its certificate widgets
	#######################################################################
	if enable_gcr
		GCR = dependency('gcr-3', required : force_deps)
		if GCR.found()
			conf.set('ENABLE_GCR', true)
		else
			enable_gcr = false
		endif
	else
		GCR = []
	endif


else	# GTK
	enable_gcr = false
	enable_enchant = false
endif	# GTK

ENABLE_GTK = get_option('gtkui')


#######################################################################
# Check if we should compile with X support
#######################################################################
with_x = get_option('x') and not IS_WIN32

if with_x
	x11 = dependency('x11')
	if x11.found()
		conf.set('HAVE_X11', true)
	else
		with_x = false
		if force_deps
			error('''
X11 development headers not found.
Use -Dx=false if you do not need X11 support.
''')
		endif
	endif
else
	x11 = []
endif
if not get_option('gtkui') or not with_x
	enable_gestures = false
endif

#######################################################################
# Check for LibXML2 (required)
#######################################################################
libxml = dependency('libxml-2.0', version : '>= 2.6.0')
if libxml.version().version_compare('<2.6.18')
	message('Versions of libxml2 < 2.6.18 may contain bugs that could cause XMPP messages to be discarded.')
endif

#######################################################################
# Check for JSON-GLib (required)
#######################################################################

json = dependency('json-glib-1.0', version : '>= 0.14.0')

#######################################################################
# Check for GStreamer
#######################################################################

enable_gst = get_option('gstreamer')
if enable_gst
	gstreamer = dependency('gstreamer-1.0', required : force_deps)
	if gstreamer.found()
		conf.set('USE_GSTREAMER', true)
	else
		enable_gst = false
	endif
else
	gstreamer = []
endif

#######################################################################
# Check for GStreamer Video
#######################################################################
enable_gstvideo = enable_gst and get_option('gstreamer-video')
if enable_gstvideo
	gstreamer_video = dependency('gstreamer-video-1.0',
	                             required : false)
	if gstreamer_video.found()
		conf.set('USE_GSTVIDEO', true)
	else
		enable_gstvideo = false
	endif
else
	gstreamer_video = []
endif

#######################################################################
# Check for Farstream
#######################################################################
if get_option('farstream')
	farstream = dependency('farstream-0.2', version : '>= 0.2.7',
	                       required : false)
	enable_farstream = farstream.found()
else
	farstream = []
	enable_farstream = false
endif

#######################################################################
# Check for Voice and Video support
#######################################################################
if get_option('vv')
	if enable_gst and enable_gstvideo and enable_farstream
		conf.set('USE_VV', true)
		enable_vv = true
	else
		if force_deps
			error('''
Dependencies for voice/video were not met.
Install the necessary gstreamer and farstream packages first.
Or use -Dvv=false if you do not need voice/video support.
			''')
		endif
		enable_vv = false
	endif
else
	enable_vv = false
endif

#######################################################################
# Check for Raw data streams support in Farstream
#######################################################################
if enable_vv
	gstreamer_app = dependency('gstreamer-app-1.0',
	                           required : false)
	if gstreamer_app.found()
		conf.set('USE_GSTAPP', true)
		conf.set('HAVE_MEDIA_APPLICATION', true)
	endif
else
	gstreamer_app = []
endif

#######################################################################
# Check for Internationalized Domain Name support
#######################################################################

if get_option('idn')
	idn = dependency('libidn', version : '>= 0.0.0', required : force_deps)
	conf.set('USE_IDN', idn.found())
else
	idn = []
endif

#######################################################################
# Check for Meanwhile headers (for Sametime)
#######################################################################
if get_option('meanwhile')
	meanwhile = dependency('meanwhile', version : ['>= 1.0.0', '< 2.0.0'], required : force_deps)
	enable_meanwhile = meanwhile.found()
else
	enable_meanwhile = false
	meanwhile = []
endif

#######################################################################
# Check for Native Avahi headers (for Bonjour)
#######################################################################

enable_avahi = get_option('avahi')
avahi = []
if enable_avahi and IS_WIN32
	# Just keep enabled.
elif enable_avahi
	# Attempt to autodetect Avahi
	avahi_client = dependency('avahi-client', required : false)
	avahi_glib = dependency('avahi-glib', required : false)
	if avahi_client.found() and avahi_glib.found()
		avahi = [avahi_client, avahi_glib]
	else
		enable_avahi = false
		if force_deps
			error('''
avahi development package not found.
Use -Davahi=false if you do not need avahi (Bonjour) support.
''')
		endif
	endif
endif


#######################################################################
# Check for SILC client includes and libraries
#######################################################################
have_silc = false
if get_option('silc')
	silc = dependency('silcclient', version : '>= 1.1', required : false)
	if silc.found()
		have_silc = true
		# SILC Toolkit >= 1.0.1 has a new MIME API
		conf.set('HAVE_SILCMIME_H', true)
	else
		if force_deps
			error('''
SILC development package not found.
Use -Dsilc=false if you do not need SILC support.
''')
		endif
	endif
endif

#######################################################################
# Check for Gadu-Gadu protocol library (libgadu)
#######################################################################

enable_libgadu = get_option('libgadu')
if enable_libgadu
	libgadu = dependency('libgadu', version : '>= 1.12.0', required : false)
	have_libgadu = libgadu.found()

	if have_libgadu
		if not compiler.has_function('gg_is_gpl_compliant', dependencies : libgadu)
			have_libgadu = false
			message('''
libgadu is not compatible with the GPL when compiled with OpenSSL support.

To link against libgadu, please recompile it using:
./configure --with-openssl=no
Then rerun this Meson build
			''')
		endif
	endif

	if not have_libgadu and force_deps
		error('''
Libgadu development headers not found.
Use -Dlibgadu=false if you do not need GG (GaduGadu) support.
''')
	endif
else
	have_libgadu = false
endif


DEFAULT_PRPLS = ['bonjour', 'facebook', 'gg', 'irc', 'jabber', 'novell',
                 'oscar', 'sametime', 'silc', 'simple', 'zephyr']
ALL_PRPLS = DEFAULT_PRPLS + ['null']

dynamic_list = get_option('dynamic-prpls').split(',')
static_list = get_option('static-prpls').split(',')
if (static_list != [''] and static_list != []) and dynamic_list == ['all']
	dynamic_list = []
endif

if static_list == ['all']
	static_list = DEFAULT_PRPLS
endif
STATIC_PRPLS = []
foreach prpl : static_list
	if prpl == ''
		# The list was empty; do nothing.
	elif prpl == 'sametime' and not enable_meanwhile
		# Do nothing
	elif prpl == 'bonjour' and not enable_avahi
		# Do nothing
	elif prpl == 'silc' and not have_silc
		# Do nothing
	elif prpl == 'gg' and not have_libgadu
		# Do nothing
	elif prpl == 'zephyr' and IS_WIN32
		# Do nothing
	else
		STATIC_PRPLS += [prpl]
	endif
endforeach
STATIC_LINK_LIBS = []
extern_load = []
load_proto = []
extern_unload = []
unload_proto = []
foreach prpl : STATIC_PRPLS
	# Ugly special case for 'libsilcpurple.la':
	if prpl == 'silc'
		STATIC_LINK_LIBS.append('\$(top_builddir)/libpurple/protocols/@1@/lib@1@purple.la'.format(meson.build_root(), prpl))
	else
		# FIXME: Shouldn't be libtool:
		STATIC_LINK_LIBS.append('\$(top_builddir)/libpurple/protocols/@1@/lib@1@.la'.format(meson.build_root(), prpl))
	endif
	extern_load.append('extern gboolean @0@_plugin_load();'.format(prpl))
	load_proto.append('@0@_plugin_load();'.format(prpl))
	extern_unload.append('extern gboolean @0@_plugin_unload();'.format(prpl))
	unload_proto.append('@0@_plugin_unload();'.format(prpl))
endforeach
STATIC_BONJOUR = STATIC_PRPLS.contains('bonjour')
STATIC_FACEBOOK = STATIC_PRPLS.contains('facebook')
STATIC_GG = STATIC_PRPLS.contains('gg')
STATIC_IRC = STATIC_PRPLS.contains('irc')
STATIC_JABBER = STATIC_PRPLS.contains('jabber')
STATIC_NOVELL = STATIC_PRPLS.contains('novell')
STATIC_OSCAR = STATIC_PRPLS.contains('oscar') or STATIC_PRPLS.contains('aim') or STATIC_PRPLS.contains('icq')
STATIC_SAMETIME = STATIC_PRPLS.contains('sametime')
STATIC_SILC = STATIC_PRPLS.contains('silc')
STATIC_SIMPLE = STATIC_PRPLS.contains('simple')
STATIC_ZEPHYR = STATIC_PRPLS.contains('zephyr')
conf.set('STATIC_PROTO_LOAD',
    ' '.join(extern_load) +
    ' static void static_proto_load(void) { ' + ' '.join(load_proto) + ' }')
conf.set('STATIC_PROTO_UNLOAD',
    ' '.join(extern_unload) +
    ' static void static_proto_unload(void) { ' + ' '.join(unload_proto) + ' }')

if dynamic_list == ['all']
	dynamic_list = DEFAULT_PRPLS
endif
DYNAMIC_PRPLS = []
foreach prpl : dynamic_list
	if prpl == ''
		# The list was empty; do nothing.
	elif prpl == 'sametime' and not enable_meanwhile
		# Do nothing.
	elif prpl == 'bonjour' and not enable_avahi
		# Do nothing.
	elif prpl == 'silc' and not have_silc
		# Do nothing.
	elif prpl == 'gg' and not have_libgadu
		# Do nothing.
	elif prpl == 'zephyr' and IS_WIN32
		# Do nothing.
	else
		DYNAMIC_PRPLS += [prpl]
	endif
endforeach

DYNAMIC_BONJOUR = DYNAMIC_PRPLS.contains('bonjour')
DYNAMIC_FACEBOOK = DYNAMIC_PRPLS.contains('facebook')
DYNAMIC_GG  = DYNAMIC_PRPLS.contains('gg')
DYNAMIC_IRC = DYNAMIC_PRPLS.contains('irc')
DYNAMIC_JABBER = DYNAMIC_PRPLS.contains('jabber')
DYNAMIC_NOVELL = DYNAMIC_PRPLS.contains('novell')
DYNAMIC_NULL = DYNAMIC_PRPLS.contains('null')
DYNAMIC_OSCAR = DYNAMIC_PRPLS.contains('oscar') or DYNAMIC_PRPLS.contains('aim') or DYNAMIC_PRPLS.contains('icq')
DYNAMIC_SAMETIME = DYNAMIC_PRPLS.contains('sametime')
DYNAMIC_SILC = DYNAMIC_PRPLS.contains('silc')
DYNAMIC_SIMPLE = DYNAMIC_PRPLS.contains('simple')
DYNAMIC_ZEPHYR = DYNAMIC_PRPLS.contains('zephyr')

conf.set('HAVE_SYS_UTSNAME_H',
    compiler.has_header('sys/utsname.h'))
conf.set('HAVE_UNAME',
    compiler.has_function('uname'))


add_project_arguments(
    '-DPURPLE_DISABLE_DEPRECATED',
    '-DPIDGIN_DISABLE_DEPRECATED',
    '-DFINCH_DISABLE_DEPRECATED',
    '-DGNT_DISABLE_DEPRECATED',
    language : 'c')
if compiler.get_id() == 'gcc'
	# We enable -Wall later.
	# If it's set after the warning CFLAGS in the compiler invocation, it counteracts the -Wno... flags.
	# This leads to warnings we don't want.
#	CFLAGS=`echo $CFLAGS |$sedpath 's/-Wall//'`

	# ENABLE WARNINGS SUPPORTED BY THE VERSION OF GCC IN USE
	#
	# Future Possibilities
	#
	# Consider adding -Wbad-function-cast.
	#	This leads to spurious warnings using GPOINTER_TO_INT(), et al. directly on a function call.
	#		We'd need an intermediate variable.
	#
	foreach newflag : [
			'-Waggregate-return',
			'-Wcast-align',
			'-Wdeclaration-after-statement',
			'-Wendif-labels',
			'-Werror-implicit-function-declaration',
			'-Wextra -Wno-unused-parameter',
			'-Wformat-security',
			'-Werror=format-security',
			'-Winit-self',
			'-Wmissing-declarations',
			'-Wmissing-noreturn',
			'-Wmissing-prototypes',
			'-Wpointer-arith',
			'-Wfloat-equal',
			'-Wundef']
		if compiler.has_argument(newflag)
			add_project_arguments(newflag, language : 'c')
		endif
	endforeach

	if get_option('fortify')
#		AC_MSG_CHECKING(for FORTIFY_SOURCE support)
#		AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <features.h>]], [[
#			#if !(__GNUC_PREREQ (4, 1) \
#				|| (defined __GNUC_RH_RELEASE__ && __GNUC_PREREQ (4, 0)) \
#				|| (defined __GNUC_RH_RELEASE__ && __GNUC_PREREQ (3, 4) \
#					&& __GNUC_MINOR__ == 4 \
#					&& (__GNUC_PATCHLEVEL__ > 2 \
#						|| (__GNUC_PATCHLEVEL__ == 2 && __GNUC_RH_RELEASE__ >= 8))))
#			#error No FORTIFY_SOURCE support
#			#endif
#				return 0;
#		]])], [
#			AC_MSG_RESULT(yes)
#			DEBUG_CFLAGS='$DEBUG_CFLAGS -Wp,-D_FORTIFY_SOURCE=2'
#		], [
#			AC_MSG_RESULT(no)
#		])
	endif
endif
if SUNCC
	add_project_arguments('-features=extensions', language : 'c')
endif

pidginpath = find_program('pidgin', required : false)

if get_option('glib-errors-trace')
	if compiler.get_id() == 'clang'
		error('--enable-glib-errors-trace doesn\'t work with clang')
	endif
	conf.set('ENABLE_GLIBTRACE', true)
	add_project_arguments('-rdynamic', language : 'c')
endif

#######################################################################
# Check for D-Bus libraries
#######################################################################

# dbus doesn't compile for win32 at the moment
enable_dbus = get_option('dbus') and not IS_WIN32

if enable_dbus
	dbus_binding_tool = find_program('dbus-binding-tool')
	enable_dbus = dbus_binding_tool.found()
endif

if enable_dbus
	dbus = dependency('dbus-1', version : '>= 0.60', required : force_deps)
	dbus_glib = dependency('dbus-glib-1', version : '>= 0.60', required : force_deps)
	enable_dbus = dbus.found() and dbus_glib.found()
else
	dbus = []
	dbus_glib = []
endif

if enable_dbus
	conf.set('HAVE_DBUS', true)
endif

#######################################################################
# Check for Unity and Messaging Menu
# Remove when Ubuntu 16.04 is EOL
#######################################################################
enable_unity = get_option('unity-integration')
if enable_unity
	UNITY = [
		dependency('unity', version : '>= 6.8'),
		dependency('messaging-menu', version : '>= 12.10')
	]
	conf.set('USES_MM_CHAT_SECTION', 'X-MessagingMenu-UsesChatSection=true')
else
	conf.set('USES_MM_CHAT_SECTION', '')
endif

#######################################################################
# Check for Secret Service headers
#######################################################################

enable_secret_service = get_option('secret-service') and not IS_WIN32
if enable_secret_service
	secretservice = dependency('libsecret-1', required : force_deps)
	if secretservice.found()
	else
		enable_secret_service = false
	endif
endif

#######################################################################
# Check for KWallet headers
#######################################################################

enable_kwallet = get_option('kwallet') and not IS_WIN32
enable_kwallet = false

if enable_kwallet
	# Ensure C++ compiler works
	add_languages('cpp')
	cxx_compiler = meson.get_compiler('cpp')

	qt4 = dependency('qt4', modules : 'Core', required : force_deps)
	enable_kwallet = qt4.found()
endif

if enable_kwallet
#	AC_MSG_CHECKING([for metaobject compiler])
#	MOC=`$PKG_CONFIG --variable=moc_location QtCore`
#	AC_SUBST(MOC)
#	AC_MSG_RESULT([$MOC])
#
#	KWALLET_CXXFLAGS=''
#	KWALLET_LIBS=''
#	if test -z '$with_kwallet_includes' || test -z '$with_kwallet_libs'; then
#		AC_CHECK_PROG(KDE4_CONFIG, kde4-config, kde4-config, no)
#		if test 'x$KDE4_CONFIG' = 'xno'; then
#			enable_kwallet = false
#			if test 'x$force_deps' = 'xyes'; then
#				AC_MSG_ERROR([
#kde4-config not found. $KDE4_CONFIG
#Use -Dkwallet=false if you do not need KWallet support.
#])
#			fi
#		fi
#	fi
endif

if enable_kwallet
#	if test 'x$KDE4_CONFIG' != 'xno'; then
#		KWALLET_CXXFLAGS='$QT4_CFLAGS -I`$KDE4_CONFIG --path include`'
#	fi
#	CPPFLAGS='$CPPFLAGS $KWALLET_CXXFLAGS'
#	AC_CHECK_HEADER([kwallet.h], , [
#		enable_kwallet = false
#		if test 'x$force_deps' = 'xyes'; then
#			AC_MSG_ERROR([
#KWallet development headers not found.
#Use -Dkwallet=false if you do not need KWallet support.
#])
#		fi
#])
endif

if enable_kwallet
#	AC_MSG_CHECKING([for KWallet libraries])
#	if test 'x$KDE4_CONFIG' != 'xno'; then
#		KWALLET_LIBS='-L`$KDE4_CONFIG --install lib`/kde4/devel -lkdeui'
#	else
#		KWALLET_LIBS='-lkdeui'
#	fi
#	KWALLET_LIBS='$KWALLET_LIBS'
#	LIBS='$LIBS $KWALLET_LIBS $QT4_LIBS'
#	AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <kwallet.h>],
#		[KWallet::Wallet::LocalWallet();])], [AC_MSG_RESULT([yes])],
#		[
#			AC_MSG_RESULT(no)
#			enable_kwallet = false
#			if test 'x$force_deps' = 'xyes'; then
#				AC_MSG_ERROR([
#KWallet development libraries not found.
#Use -Dkwallet=false if you do not need KWallet support.
#])
#			fi
#		])
endif

#######################################################################
# Check for GPlugin 0.0.17
#######################################################################
if get_option('plugins')
	gplugin = dependency('gplugin', version : '>= 0.0.17')
	# GPLUGIN_REQ sets pkg-config requirements in the .pc file
	GPLUGIN_REQ = ['gplugin']
else
	gplugin = []
	GPLUGIN_REQ = []
endif

#######################################################################
# Check for GObject Introspection
#######################################################################

enable_introspection = get_option('introspection')
if enable_introspection
	if dependency('gobject-introspection-1.0', version : '>= 1.30.0',
	              required : force_deps).found()
		conf.set('ENABLE_INTROSPECTION', true)
	else
		enable_introspection = false
	endif
endif

#######################################################################
# Check for Python
#######################################################################

# Python scripts are used to auto-generate about 3000 lines of C
# and XML code that wraps (part of) the existing API so that
# it is now accessible through D-Bus.

if enable_dbus
	if meson.version().version_compare('>=0.38.0')
		python3_mod = import('python3')
		python = python3_mod.find_python()
	else
		python = find_program('python3')
	endif
endif

#######################################################################
# SSL support
#######################################################################

ssl_certificates_dir = get_option('system-ssl-certs')

SSL_CERTIFICATES_DIR = ''
if ssl_certificates_dir != ''
	if run_command('test', '-d', ssl_certificates_dir).returncode() != 0
		if IS_WIN32
			message(ssl_certificates_dir + ' does not exist. It may be OK when cross-compiling, but please make sure about it.')
		else
			error(ssl_certificates_dir + ' does not exist, if this is the correct location please make sure that it exists.')
		endif
	endif
	SSL_CERTIFICATES_DIR = ssl_certificates_dir
endif
if SSL_CERTIFICATES_DIR != ''
	conf.set_quoted('SSL_CERTIFICATES_DIR',	SSL_CERTIFICATES_DIR)
endif
INSTALL_SSL_CERTIFICATES = SSL_CERTIFICATES_DIR == ''

if get_option('plugins')
	conf.set('PURPLE_PLUGINS', 1)
	PLUGINS = true
	purple_h_conf.set('PLUGINS_DEFINE', '#define PURPLE_PLUGINS 1')
else
	PLUGINS = false
	purple_h_conf.set('PLUGINS_DEFINE', '#undef PURPLE_PLUGINS')
endif

#######################################################################
# Check for Nettle (Crypto Library)
#######################################################################

enable_nettle = get_option('nettle')

if enable_nettle
	nettle = dependency('nettle', version : '>= 3.0', required : false)
	enable_nettle = nettle.found()
	conf.set('HAVE_NETTLE', enable_nettle)

	if not enable_nettle and force_deps
		error('''
Nettle development headers not found
Use -Dnettle=false if you do not need it.
''')
	endif
endif

#######################################################################
# Check for Cyrus-SASL (for xmpp/irc)
#######################################################################
foreach func : ['snprintf', 'connect']
	conf.set('HAVE_' + func.to_upper(),
	    compiler.has_function(func))
endforeach
enable_cyrus_sasl = get_option('cyrus-sasl')
if enable_cyrus_sasl
	sasl = dependency('libsasl2', version : '>= 2.0', required : false)
	enable_cyrus_sasl = sasl.found()
	conf.set('HAVE_CYRUS_SASL', enable_cyrus_sasl)

	if not enable_cyrus_sasl and force_deps
		error('''
Cyrus SASL library not found
Use -Dcyrus-sasl=false if you do not need it.
''')
	endif
else
	enable_cyrus_sasl = false
	sasl = []
endif

#######################################################################
# Check for Kerberos (for Zephyr)
#######################################################################
conf.set('ZEPHYR_INT32', 'long')
#AC_SUBST(KRB4_CFLAGS)
#AC_SUBST(KRB4_LDFLAGS)
#AC_SUBST(KRB4_LIBS)
kerberos = get_option('krb4')
if kerberos
	if kerberos != 'yes'
#		KRB4_CFLAGS='-I${kerberos}/include'
#		if test -d '$kerberos/include/kerberosIV' ; then
#			KRB4_CFLAGS='$KRB4_CFLAGS -I${kerberos}/include/kerberosIV'
#		fi
#		KRB4_LDFLAGS='-L${kerberos}/lib'
	elif run_command('test', '-d', '/usr/local/include/kerberosIV').returncode() == 0
#		KRB4_CFLAGS='-I/usr/local/include/kerberosIV'
	elif run_command('test', '-d', '/usr/include/kerberosIV').returncode() == 0
#		KRB4_CFLAGS='-I/usr/include/kerberosIV'
	endif
	conf.set('ZEPHYR_USES_KERBEROS', true)

#	AC_CHECK_LIB(krb4, krb_rd_req,
#			[KRB4_LIBS='-lkrb4 -ldes425 -lkrb5 -lk5crypto -lcom_err'],
#			[AC_CHECK_LIB(krb, krb_rd_req,
#				[KRB4_LIBS='-lkrb -ldes'],
#				[AC_MSG_ERROR([Kerberos 4 libraries not found])],
#				-ldes)],
#			-ldes425 -lkrb5 -lk5crypto -lcom_err)
#	AC_CHECK_FUNCS(krb_set_key krb_rd_req krb_get_lrealm)
#	AC_CHECK_FUNCS(krb_get_err_text krb_log)
	krb4 = []
endif
if not kerberos
	krb4 = []
endif

#######################################################################
# Check for external libzephyr
#######################################################################
zephyr = get_option('zephyr')
if zephyr
	ext_zephyr = dependency('zephyr', required : force_deps)
	zephyr = ext_zephyr.found()
else
	ext_zephyr = []
endif
EXTERNAL_LIBZEPHYR = zephyr
conf.set('LIBZEPHYR_EXT', EXTERNAL_LIBZEPHYR)

#AC_MSG_CHECKING(for me pot o' gold)
#AC_MSG_RESULT(no)
foreach func : ['gethostid', 'timegm']
	conf.set('HAVE_' + func.to_upper(),
	    compiler.has_function(func))
endforeach
foreach header : 'paths.h sgtty.h sys/cdefs.h sys/file.h sys/filio.h sys/ioctl.h sys/msgbuf.h sys/select.h sys/uio.h sys/utsname.h sys/wait.h termios.h'.split()
	conf.set('HAVE_' + header.to_upper().underscorify(),
	    compiler.has_header(header))
endforeach

# sys/sysctl.h on OpenBSD 4.2 requires sys/param.h
# sys/sysctl.h on FreeBSD requires sys/types.h
have_sys_param_h = compiler.has_header('sys/param.h')
conf.set('HAVE_SYS_PARAM_H', have_sys_param_h)
prefix = '''
#include <sys/types.h>
'''
if have_sys_param_h
	prefix += '''
#include <sys/param.h>
'''
endif
conf.set('HAVE_SYS_SYSCTL_H',
    compiler.has_header('sys/sysctl.h', prefix : prefix))
conf.set('HAVE_SYS_SOCKET_H',
    compiler.has_header('sys/socket.h'))
#AC_VAR_TIMEZONE_EXTERNALS

conf.set('HAVE_TM_GMTOFF',
    compiler.has_member('struct tm', 'tm_gmtoff',
        prefix : '#include<time.h>'))

#######################################################################
# Disable pixmap installation
#######################################################################
INSTALL_PIXMAPS = get_option('pixmaps-install')

# check for gtk-doc
ENABLE_DOC = get_option('doc')
if ENABLE_DOC
	if meson.version().version_compare('<0.41.2')
		if force_deps
			error('Meson 0.41.2 or newer is required to build documentation.')
		endif
		ENABLE_DOC = false
	endif
endif

enable_debug = get_option('debug')
conf.set('DEBUG', enable_debug)

# So that config.h may be found.
toplevel_inc = include_directories('.')

subdir('libpurple')
subdir('share/sounds')
subdir('share/ca-certs')
subdir('finch')
subdir('pidgin')
subdir('doc')

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

message('')
message('pidgin ' + purple_display_version)

message('')
message('Build GTK+ UI................. : ' + get_option('gtkui').to_string())
message('Build console UI.............. : ' + enable_consoleui.to_string())
message('Build for X11................. : ' + with_x.to_string())
message('')
message('Enable Gestures............... : ' + enable_gestures.to_string())
message('Protocols to build dynamically : @0@'.format(DYNAMIC_PRPLS))
message('Protocols to link statically.. : @0@'.format(STATIC_PRPLS))
message('')
message('Build with GStreamer support.. : ' + enable_gst.to_string())
message('Build with D-Bus support...... : ' + enable_dbus.to_string())
message('Build with voice and video.... : ' + enable_vv.to_string())
message('Build with GNU Libidn......... : ' + get_option('idn').to_string())
if SSL_CERTIFICATES_DIR != ''
	message('SSL CA certificates directory. : ' + SSL_CERTIFICATES_DIR)
endif
message('Build with Nettle support..... : ' + enable_nettle.to_string())
message('Build with Cyrus SASL support. : ' + enable_cyrus_sasl.to_string())
message('Use kerberos 4 with zephyr.... : ' + kerberos.to_string())
message('Use external libzephyr........ : ' + zephyr.to_string())
message('Install pixmaps............... : ' + INSTALL_PIXMAPS.to_string())
message('Install translations.......... : ' + INSTALL_I18N.to_string())
message('Has you....................... : yes')
message('')
message('Build with Enchant support.... : ' + enable_enchant.to_string())
message('Build with GCR widgets........ : ' + enable_gcr.to_string())
message('Build Unity integration plugin.: ' + enable_unity.to_string())
message('')
message('Build with KWallet............ : ' + enable_kwallet.to_string())
message('Build with Secret Service..... : ' + enable_secret_service.to_string())
message('')
message('Build with plugin support..... : ' + PLUGINS.to_string())
message('Enable Introspection...........: ' + enable_introspection.to_string())
message('')
message('Print debugging messages...... : ' + enable_debug.to_string())
message('Generate documentation........ : ' + ENABLE_DOC.to_string())
message('')
bindir = join_paths(get_option('prefix'), get_option('bindir'))
message('Pidgin will be installed in @0@.'.format(bindir))
if pidginpath.found()
	message('Warning: You have an old copy of Pidgin at @0@.'.format(pidginpath.path()))
endif
if not INSTALL_PIXMAPS
	message('')
	message('Warning: You have disabled the installation of pixmap data, but Pidgin')
	message('still requires installed pixmaps.  Be sure you know what you are doing.')
endif
if not INSTALL_I18N
	message('')
	message('Warning: You have disabled the building and installation of translation')
	message('data.  This will prevent building Pidgin desktop files.')
	message('Be sure you know what you are doing.')
endif
message('')
message('configure complete, now type \'ninja\'')
message('')