diff options
Diffstat (limited to 'src/engine/SCons/Tool/yacc.py')
| -rw-r--r-- | src/engine/SCons/Tool/yacc.py | 49 |
1 files changed, 43 insertions, 6 deletions
diff --git a/src/engine/SCons/Tool/yacc.py b/src/engine/SCons/Tool/yacc.py index 4f9fbc2..6857574 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 @@ -31,16 +31,25 @@ 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 e724ae812eb96f4858a132f5b8c769724744faf6 2019-07-21 00:04:47 bdeegan" 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") +if sys.platform == 'win32': + BINS = ['bison', 'yacc', 'win_bison'] +else: + BINS = ["bison", "yacc"] + def _yaccEmitter(target, source, env, ysuf, hsuf): yaccflags = env.subst("$YACCFLAGS", target=target, source=source) flags = SCons.Util.CLVar(yaccflags) @@ -94,6 +103,29 @@ def ymEmitter(target, source, env): def yyEmitter(target, source, env): return _yaccEmitter(target, source, env, ['.yy'], '$YACCHXXFILESUFFIX') +def get_yacc_path(env, append_paths=False): + """ + Find the path to the yacc tool, searching several possible names + + Only called in the Windows case, so the default_path + can be Windows-specific + + :param env: current construction environment + :param append_paths: if set, add the path to the tool to PATH + :return: path to yacc tool, if found + """ + 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 append_paths: + env.AppendENVPath('PATH', os.path.dirname(bin_path)) + return bin_path + SCons.Warnings.Warning('yacc tool requested, but yacc or bison 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) @@ -113,17 +145,22 @@ 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': + # ignore the return, all we need is for the path to be added + _ = get_yacc_path(env, append_paths=True) + + env["YACC"] = env.Detect(BINS) env['YACCFLAGS'] = SCons.Util.CLVar('') env['YACCCOM'] = '$YACC $YACCFLAGS -o $TARGET $SOURCES' env['YACCHFILESUFFIX'] = '.h' - env['YACCHXXFILESUFFIX'] = '.hpp' - env['YACCVCGFILESUFFIX'] = '.vcg' def exists(env): - return env.Detect(['bison', 'yacc']) + if sys.platform == 'win32': + return get_yacc_path(env) + else: + return env.Detect(BINS) # Local Variables: # tab-width:4 |