My only concern with this feature is that it can dump a lot of data. Given
Parts for example I would have lots of environment that would be dumped. such
information is generally only useful when you can map a given environment to
the correct file ( or part file in my case) or build actions (such as this is
the environment for link foo.so or this was the environment for making hello.o).
Jason
From: William Blevins
Sent: Saturday, August 8, 2015 12:22 AM
To: SCons developer list
Subject: [Scons-dev] Patch for potential new debug option
Here is a patch for dumping build environments via the command-line.
I couldn't ever figure out a good way to get only explicitly lister targets
(non-default commandline targets). It will essentially print the
node.get_env().Dump() for all targets with a build_env defined.
I could potentially change it from "--debug=envdump" to something like
"--envdump=<VARIABLE>" so that it could print a particular variable rather than
the whole env.
Does this interest anyone or waste of chars?
diff -r 682b8a7a51fb src/engine/SCons/Script/Main.py
--- a/src/engine/SCons/Script/Main.py Mon Jun 29 15:37:44 2015 -0400
+++ b/src/engine/SCons/Script/Main.py Thu Aug 06 23:44:50 2015 -0400
@@ -391,6 +391,21 @@
def prepare(self):
pass
+class EnvDumpTask(SCons.Taskmaster.AlwaysTask):
+ """SCons task for --debug=envdump. Prints env dump for BUILD_TARGETS."""
+ def prepare(self):
+ pass
+
+ def execute(self):
+ for target in self.targets:
+ if target.get_build_env():
+ print 'Environment dump for target: ' + str(target)
+ print target.get_env().Dump()
+
+ def executed(self):
+ pass
+
+
class QuestionTask(SCons.Taskmaster.AlwaysTask):
"""An SCons task for the -q (question) option."""
def prepare(self):
@@ -657,6 +672,7 @@
if "memory" in debug_values:
memory_stats.enable(sys.stdout)
print_objects = ("objects" in debug_values)
+ options.debug_envdump = ( "envdump" in debug_values )
if print_objects:
SCons.Debug.track_instances = True
if "presub" in debug_values:
@@ -1210,8 +1226,13 @@
failure_message = "done building targets (errors occurred during
build)."
else:
failure_message = "building terminated because of errors."
+
+ if options.debug_envdump:
+ task_class = EnvDumpTask
+
if options.question:
task_class = QuestionTask
+
try:
if options.clean:
task_class = CleanTask
diff -r 682b8a7a51fb src/engine/SCons/Script/SConsOptions.py
--- a/src/engine/SCons/Script/SConsOptions.py Mon Jun 29 15:37:44 2015
-0400
+++ b/src/engine/SCons/Script/SConsOptions.py Thu Aug 06 23:44:50 2015
-0400
@@ -673,7 +673,7 @@
"tree" : '; please use --tree=all instead',
}
- debug_options = ["count", "duplicate", "explain", "findlibs",
+ debug_options = ["count", "duplicate", "explain", "envdump", "findlibs",
"includes", "memoizer", "memory", "objects",
"pdb", "prepare", "presub", "stacktrace",
"time"]
V/R,
William
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