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-rw-r--r--src/engine/SCons/Tool/yacc.py49
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