diff options
Diffstat (limited to 'engine/SCons/Tool/yacc.py')
| -rw-r--r-- | engine/SCons/Tool/yacc.py | 56 |
1 files changed, 27 insertions, 29 deletions
diff --git a/engine/SCons/Tool/yacc.py b/engine/SCons/Tool/yacc.py index d328d20..6857574 100644 --- a/engine/SCons/Tool/yacc.py +++ b/engine/SCons/Tool/yacc.py @@ -31,7 +31,7 @@ selection method. # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # -__revision__ = "src/engine/SCons/Tool/yacc.py a56bbd8c09fb219ab8a9673330ffcd55279219d0 2019-03-26 23:16:31 bdeegan" +__revision__ = "src/engine/SCons/Tool/yacc.py e724ae812eb96f4858a132f5b8c769724744faf6 2019-07-21 00:04:47 bdeegan" import os.path import sys @@ -45,6 +45,11 @@ 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) @@ -100,25 +105,26 @@ def yyEmitter(target, source, env): 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'] + 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 - for prog in bins: + :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, + 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: + if append_paths: 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') + 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.""" @@ -140,29 +146,21 @@ def generate(env): cxx_file.add_emitter('.yy', yyEmitter) 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') + # ignore the return, all we need is for the path to be added + _ = get_yacc_path(env, append_paths=True) - 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["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 |