initial import

gstreamer/byacc.patch

@@ -0,0 +1,85 @@
+diff --git a/gst/parse/gen_grammar.py.in b/gst/parse/gen_grammar.py.in
+index 3a7af00..8d4cc92 100755
+--- a/gst/parse/gen_grammar.py.in
++++ b/gst/parse/gen_grammar.py.in
+@@ -6,9 +6,9 @@ cfile = sys.argv[1]
+ hfile = sys.argv[2]
+ yfile = sys.argv[3]
+ 
+-args = ['-d', '-v', '-ppriv_gst_parse_yy', yfile, '-o', cfile]
+-bison = [r'@BISON@'] + shlex.split(r'@BISON_ARGS@')
+-subprocess.check_call(bison + args)
++args = ['-d', '-v', '-p', 'priv_gst_parse_yy', '-o', cfile, yfile]
++yacc = [r'@YACC@'] + shlex.split(r'@YACC_ARGS@')
++subprocess.check_call(yacc + args)
+ 
+ prefix = '''
+ #ifdef HAVE_CONFIG_H
+diff --git a/gst/parse/grammar.y.in b/gst/parse/grammar.y.in
+index 2ef703d..8292df9 100644
+--- a/gst/parse/grammar.y.in
++++ b/gst/parse/grammar.y.in
+@@ -830,7 +830,7 @@ static int yyerror (void *scanner, graph_t *graph, const char *s);
+ %lex-param { void *scanner }
+ %parse-param { void *scanner }
+ %parse-param { graph_t *graph }
+-@BISON_PURE_PARSER@
++@YACC_PURE_PARSER@
+ 
+ %start graph
+ %%
+diff --git a/gst/parse/meson.build b/gst/parse/meson.build
+index 35ed6f2..0391dad 100644
+--- a/gst/parse/meson.build
++++ b/gst/parse/meson.build
+@@ -26,41 +26,24 @@ gen_lex = configure_file(input : 'gen_lex.py.in',
+   output : 'gen_lex.py',
+   configuration : flex_cdata)
+ 
+-# Find bison, configure grammar generator
+-bison_parser_cdata = configuration_data()
+-bison_cdata = configuration_data()
++# Find yacc, configure grammar generator
++yacc_parser_cdata = configuration_data()
++yacc_cdata = configuration_data()
+ 
+-bison_min_version='2.4'
+-bison = find_program('bison', 'win_bison')
++yacc = find_program('byacc')
+ 
+-bversion_res = run_command([bison, '--version'])
+-if bversion_res.returncode() != 0
+-  error('Could not get bison version (@0@)'.format(bversion_res.stderr()))
+-endif
+-
+-bversion = bversion_res.stdout().split('\n')[0].split(' ')[-1].strip()
+-if bversion.version_compare('<' + bison_min_version)
+-  error('bison version @0@ >= @1@: NO'.format(bversion, bison_min_version))
+-else
+-  message('bison version @0@ >= @1@: YES'.format(bversion, bison_min_version))
+-endif
+-
+-if bversion.version_compare('>' + '2.5')
+-  bison_parser_cdata.set('BISON_PURE_PARSER', '%define api.pure full')
+-else
+-  bison_parser_cdata.set('BISON_PURE_PARSER', '%pure-parser')
+-endif
++yacc_parser_cdata.set('YACC_PURE_PARSER', '%pure-parser')
+ 
+ gen_grammar_file = configure_file(input : 'grammar.y.in',
+   output : 'grammar.y',
+-  configuration : bison_parser_cdata)
++  configuration : yacc_parser_cdata)
+ 
+-bison_cdata.set('BISON', bison.path())
+-bison_cdata.set('BISON_ARGS', '')
++yacc_cdata.set('YACC', yacc.path())
++yacc_cdata.set('YACC_ARGS', '')
+ 
+ gen_grammar = configure_file(input : 'gen_grammar.py.in',
+   output : 'gen_grammar.py',
+-  configuration : bison_cdata)
++  configuration : yacc_cdata)
+ 
+ # Custom targets
+ parser = custom_target('parselex',