scripts: waifulib: re-export sdl2.py from waifu repository, add sdl3 compatibility

scripts/waifulib/sdl2.py

@@ -0,0 +1,105 @@
+# encoding: utf-8
+# sdl2.py -- sdl2 waf plugin
+# Copyright (C) 2018 a1batross
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+import os
+
+def options(opt):
+	grp = opt.add_option_group('SDL2/SDL3 options')
+	grp.add_option('-s', '--sdl2', action='store', dest = 'SDL_PATH', default = None,
+		help = 'path to precompiled SDL library (required for Windows)')
+
+	grp.add_option('--use-sdl3', action='store_true', dest='SDL3', default = False, help = 'configure for SDL3 [default: %(default)s]')
+
+	grp.add_option('--skip-sdl2-sanity-check', action='store_false', default = True, dest='SDL_SANITY_CHECK',
+		help = 'skip checking SDL sanity [default: %(default)s]')
+
+def my_dirname(path):
+	# really dumb, will not work with /path/framework//, but still enough
+	if path[-1] == '/':
+		path = path[:-1]
+	return os.path.dirname(path)
+
+def sdl2_configure_path(conf, path, libname):
+	conf.start_msg('Configuring %s by path' % libname)
+
+	HAVE          = 'HAVE_' + libname
+	INCLUDES      = 'INCLUDES_' + libname
+	FRAMEWORKPATH = 'FRAMEWORKPATH_' + libname
+	FRAMEWORK     = 'FRAMEWORK_' + libname
+	LIBPATH       = 'LIBPATH_' + libname
+	LIB           = 'LIB_' + libname
+
+	conf.env[HAVE] = 1
+	if conf.env.DEST_OS == 'darwin':
+		conf.env[INCLUDES] = [os.path.abspath(os.path.join(path, 'Headers'))]
+		conf.env[FRAMEWORKPATH] = [my_dirname(path)]
+		conf.env[FRAMEWORK] = [libname]
+		conf.end_msg('yes: {0}, {1}, {2}'.format(conf.env[FRAMEWORK], conf.env[FRAMEWORKPATH], conf.env[INCLUDES]))
+	else:
+		conf.env[INCLUDES] = [
+			os.path.abspath(os.path.join(path, 'include')),
+			os.path.abspath(os.path.join(path, 'include/%s' % libname))
+		]
+		libpath = 'lib'
+		if conf.env.COMPILER_CC == 'msvc':
+			if conf.env.DEST_CPU == 'x86_64':
+				libpath = 'lib/x64'
+			else:
+				libpath = 'lib/' + conf.env.DEST_CPU
+		conf.env[LIBPATH] = [os.path.abspath(os.path.join(path, libpath))]
+		conf.env[LIB] = [libname]
+		conf.end_msg('yes: {0}, {1}, {2}'.format(conf.env[LIB], conf.env[LIBPATH], conf.env[INCLUDES]))
+
+def configure(conf):
+	if conf.options.SDL3:
+		libname = 'SDL3'
+	else:
+		libname = 'SDL2'
+
+	HAVE = 'HAVE_'+libname
+
+	if conf.options.SDL_PATH:
+		sdl2_configure_path(conf, conf.options.SDL_PATH, libname)
+	elif conf.env.DEST_OS == 'darwin':
+		sdl2_configure_path(conf, '/Library/Frameworks/%s.framework' % libname)
+	else:
+		try:
+			conf.check_cfg(package=libname.lower(), args='--cflags --libs',
+				msg='Checking for %s (pkg-config)' % libname)
+		except conf.errors.ConfigurationError:
+			try:
+				if not conf.env.SDLCONFIG:
+					conf.find_program('%s-config' % libname.lower(), var='SDLCONFIG')
+
+				conf.check_cfg(path=conf.env.SDLCONFIG, args='--cflags --libs',
+					msg='Checking for %s (%s-config)' % (libname, libname.lower()), package='',
+					uselib_store=libname)
+			except conf.errors.ConfigurationError:
+				conf.env[HAVE] = 0
+
+	if conf.env[HAVE] and conf.options.SDL_SANITY_CHECK:
+		try:
+			conf.check_cc(
+				fragment='''
+				#define SDL_MAIN_HANDLED
+				#include <SDL.h>
+				int main( void )
+				{
+					SDL_Init( SDL_INIT_EVENTS );
+					return 0;
+				}''',
+				msg	= 'Checking for %s sanity' % libname,
+				use = libname,
+				execute = False)
+		except conf.errors.ConfigurationError:
+			conf.env.HAVE_SDL2 = 0