diff options
Diffstat (limited to 'src/engine/SCons/Tool/yacc.py')
| -rw-r--r-- | src/engine/SCons/Tool/yacc.py | 45 |
1 files changed, 42 insertions, 3 deletions
diff --git a/src/engine/SCons/Tool/yacc.py b/src/engine/SCons/Tool/yacc.py index 4f9fbc2..d397de1 100644 --- a/src/engine/SCons/Tool/yacc.py +++ b/src/engine/SCons/Tool/yacc.py @@ -9,7 +9,7 @@ selection method. """ # -# Copyright (c) 2001 - 2017 The SCons Foundation +# Copyright (c) 2001 - 2019 The SCons Foundation # # Permission is hereby granted, free of charge, to any person obtaining # a copy of this software and associated documentation files (the @@ -31,13 +31,17 @@ selection method. # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # -__revision__ = "src/engine/SCons/Tool/yacc.py rel_3.0.0:4395:8972f6a2f699 2017/09/18 12:59:24 bdbaddog" +__revision__ = "src/engine/SCons/Tool/yacc.py 103260fce95bf5db1c35fb2371983087d85dd611 2019-07-13 18:25:30 bdbaddog" import os.path +import sys import SCons.Defaults import SCons.Tool import SCons.Util +from SCons.Platform.mingw import MINGW_DEFAULT_PATHS +from SCons.Platform.cygwin import CYGWIN_DEFAULT_PATHS +from SCons.Platform.win32 import CHOCO_DEFAULT_PATH YaccAction = SCons.Action.Action("$YACCCOM", "$YACCCOMSTR") @@ -94,6 +98,28 @@ def ymEmitter(target, source, env): def yyEmitter(target, source, env): return _yaccEmitter(target, source, env, ['.yy'], '$YACCHXXFILESUFFIX') +def get_yacc_path(env, append_paths=False): + """ + Find the a path containing the lex or flex binaries. If a construction + environment is passed in then append the path to the ENV PATH. + """ + # save existing path to reset if we don't want to append any paths + envPath = env['ENV']['PATH'] + bins = ['bison', 'yacc', 'win_bison'] + + for prog in bins: + bin_path = SCons.Tool.find_program_path( + env, + prog, + default_paths=CHOCO_DEFAULT_PATH + MINGW_DEFAULT_PATHS + CYGWIN_DEFAULT_PATHS ) + if bin_path: + if not append_paths: + env['ENV']['PATH'] = envPath + else: + env.AppendENVPath('PATH', os.path.dirname(bin_path)) + return bin_path + SCons.Warnings.Warning('lex tool requested, but lex or flex binary not found in ENV PATH') + def generate(env): """Add Builders and construction variables for yacc to an Environment.""" c_file, cxx_file = SCons.Tool.createCFileBuilders(env) @@ -113,7 +139,20 @@ def generate(env): cxx_file.add_action('.yy', YaccAction) cxx_file.add_emitter('.yy', yyEmitter) - env['YACC'] = env.Detect('bison') or 'yacc' + if sys.platform == 'win32': + bison = SCons.Tool.find_program_path(env, 'bison', default_paths=MINGW_DEFAULT_PATHS + CYGWIN_DEFAULT_PATHS ) + if bison: + bison_bin_dir = os.path.dirname(bison) + env.AppendENVPath('PATH', bison_bin_dir) + else: + SCons.Warnings.Warning('yacc tool requested, but bison binary not found in ENV PATH') + + if sys.platform == 'win32': + get_yacc_path(env, append_paths=True) + env["YACC"] = env.Detect(['bison', 'yacc', 'win_bison']) + else: + env["YACC"] = env.Detect(["bison", "yacc"]) + env['YACCFLAGS'] = SCons.Util.CLVar('') env['YACCCOM'] = '$YACC $YACCFLAGS -o $TARGET $SOURCES' env['YACCHFILESUFFIX'] = '.h' |