diff options
Diffstat (limited to 'src/engine/SCons/Tool/lex.py')
| -rw-r--r-- | src/engine/SCons/Tool/lex.py | 40 |
1 files changed, 23 insertions, 17 deletions
diff --git a/src/engine/SCons/Tool/lex.py b/src/engine/SCons/Tool/lex.py index affb52c..4831776 100644 --- a/src/engine/SCons/Tool/lex.py +++ b/src/engine/SCons/Tool/lex.py @@ -31,7 +31,7 @@ selection method. # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # -__revision__ = "src/engine/SCons/Tool/lex.py 103260fce95bf5db1c35fb2371983087d85dd611 2019-07-13 18:25:30 bdbaddog" +__revision__ = "src/engine/SCons/Tool/lex.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 LexAction = SCons.Action.Action("$LEXCOM", "$LEXCOMSTR") +if sys.platform == 'win32': + BINS = ['flex', 'lex', 'win_flex'] +else: + BINS = ["flex", "lex"] + def lexEmitter(target, source, env): sourceBase, sourceExt = os.path.splitext(SCons.Util.to_String(source[0])) @@ -70,22 +75,22 @@ def lexEmitter(target, source, env): def get_lex_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 = ['flex', 'lex', 'win_flex'] + Find the path to the lex tool, searching several possible names - for prog in bins: + 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 lex 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') @@ -113,20 +118,21 @@ def generate(env): env["LEXFLAGS"] = SCons.Util.CLVar("") if sys.platform == 'win32': - get_lex_path(env, append_paths=True) - env["LEX"] = env.Detect(['flex', 'lex', 'win_flex']) + # ignore the return - we do not need the full path here + _ = get_lex_path(env, append_paths=True) + env["LEX"] = env.Detect(BINS) if not env.get("LEXUNISTD"): env["LEXUNISTD"] = SCons.Util.CLVar("") env["LEXCOM"] = "$LEX $LEXUNISTD $LEXFLAGS -t $SOURCES > $TARGET" else: - env["LEX"] = env.Detect(["flex", "lex"]) + env["LEX"] = env.Detect(BINS) env["LEXCOM"] = "$LEX $LEXFLAGS -t $SOURCES > $TARGET" def exists(env): if sys.platform == 'win32': return get_lex_path(env) else: - return env.Detect(["flex", "lex"]) + return env.Detect(BINS) # Local Variables: # tab-width:4 |