blob: ba2520421bb762912b1587985fe2525977ac6628 [file] [log] [blame]
#!/usr/bin/python2.4
# Copyright 2009 The Native Client Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""SCons tool for generating code coverage.
This module enhances a debug environment to add code coverage.
It is used as follows:
coverage_env = dbg_env.Clone(tools = ['code_coverage'])
"""
def AddCoverageSetup(env):
"""Add coverage related build steps and dependency links.
Args:
env: a leaf environment ready to have coverage steps added.
"""
# Add a step to start coverage (for instance windows needs this).
# This step should get run before and tests are run.
if env.get('COVERAGE_START_CMD', None):
start = env.Command('$COVERAGE_START_FILE', [], '$COVERAGE_START_CMD')
env.AlwaysBuild(start)
else:
start = []
# Add a step to end coverage (used on basically all platforms).
# This step should get after all the tests have run.
if env.get('COVERAGE_STOP_CMD', None):
stop = env.Command('$COVERAGE_OUTPUT_FILE', [], '$COVERAGE_STOP_CMD')
env.AlwaysBuild(stop)
else:
stop = []
targets = env.SubstList2('$COVERAGE_TARGETS')
targets = [env.Alias(t) for t in [start] + targets + [stop]]
# Add an alias for coverage.
env.Alias('coverage', targets)
def generate(env):
# NOTE: SCons requires the use of this name, which fails gpylint.
"""SCons entry point for this tool."""
env['COVERAGE_ENABLED'] = True
env.SetBits('coverage_enabled')
env.SetDefault(
# Setup up coverage related tool paths.
# These can be overridden elsewhere, if needed, to relocate the tools.
COVERAGE_MCOV='mcov',
COVERAGE_GENHTML='genhtml',
COVERAGE_ANALYZER='coverage_analyzer.exe',
COVERAGE_VSPERFCMD='VSPerfCmd.exe',
COVERAGE_VSINSTR='vsinstr.exe',
# Setup coverage related locations.
COVERAGE_DIR='$TARGET_ROOT/coverage',
COVERAGE_HTML_DIR='$COVERAGE_DIR/html',
COVERAGE_START_FILE='$COVERAGE_DIR/start.junk',
COVERAGE_OUTPUT_FILE='$COVERAGE_DIR/coverage.lcov',
# The list of aliases containing test execution targets.
COVERAGE_TARGETS=['run_all_tests'],
)
# Add in coverage flags. These come from target_platform_xxx.
env.Append(
CCFLAGS='$COVERAGE_CCFLAGS',
LIBS='$COVERAGE_LIBS',
LINKFLAGS='$COVERAGE_LINKFLAGS',
SHLINKFLAGS='$COVERAGE_SHLINKFLAGS',
)
# Change the definition of Install if required by the platform.
if env.get('COVERAGE_INSTALL'):
env['PRECOVERAGE_INSTALL'] = env['INSTALL']
env['INSTALL'] = env['COVERAGE_INSTALL']
# Add any extra paths.
env.AppendENVPath('PATH', env.SubstList2('$COVERAGE_EXTRA_PATHS'))
# Add coverage start/stop and processing in deferred steps.
env.Defer(AddCoverageSetup)