waflib: force_32bit: try to fix passing additional flags to generate 32bit code on MacOSX

scripts/waflib/force_32bit.py

@@ -37,22 +37,20 @@ def configure(conf):
 		conf.env.DEST_SIZEOF_VOID_P = 8
 	else:
 		if check_32bit(conf, 'Checking if \'{0}\' can target 32-bit'.format(conf.env.COMPILER_CC)):
-			conf.env.DEST_SIZEOF_VOID_P = 4 # predict state
+			conf.env.DEST_SIZEOF_VOID_P = 4
 		else:
-			flag = '-m32'
+			flags = ['-m32']
 			# Think different.
 			if(conf.env.DEST_OS == 'darwin'):
-				flag = '-arch i386'
+				flags = ['-arch', 'i386']
 			env_stash = conf.env
-			conf.env.append_value('LINKFLAGS', [flag])
-			conf.env.append_value('CFLAGS',    [flag])
-			conf.env.append_value('CXXFLAGS',  [flag])
-			if check_32bit(conf, '...trying with additional flags'.format(conf.env.COMPILER_CC)):
+			conf.env.append_value('LINKFLAGS', flags)
+			conf.env.append_value('CFLAGS',    flags)
+			conf.env.append_value('CXXFLAGS',  flags)
+			if check_32bit(conf, '...trying with additional flags'):
 				conf.env.DEST_SIZEOF_VOID_P = 4
 			else:
 				conf.env.DEST_SIZEOF_VOID_P = 8
 				conf.env = env_stash
 		if getattr(conf.env, 'BIT32_MANDATORY') and conf.env.DEST_SIZEOF_VOID_P == 8:
 			conf.fatal('Compiler can\'t create 32-bit code!')
-
-4