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-rw-r--r--src/engine/SCons/Tool/yacc.py45
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'