run_build_test.py
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- #!/usr/bin/python
- """
- @file run_build_test.py
- @author Nat Goodspeed
- @date 2009-09-03
- @brief Helper script to allow CMake to run some command after setting
- environment variables.
- CMake has commands to run an external program. But remember that each CMake
- command must be backed by multiple build-system implementations. Unfortunately
- it seems CMake can't promise that every target build system can set specified
- environment variables before running the external program of interest.
- This helper script is a workaround. It simply sets the requested environment
- variables and then executes the program specified on the rest of its command
- line.
- Example:
- python run_build_test.py -DFOO=bar myprog somearg otherarg
- sets environment variable FOO=bar, then runs:
- myprog somearg otherarg
- $LicenseInfo:firstyear=2009&license=mit$
- Copyright (c) 2009-2010, Linden Research, Inc.
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
- The above copyright notice and this permission notice shall be included in
- all copies or substantial portions of the Software.
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- THE SOFTWARE.
- $/LicenseInfo$
- """
- import os
- import sys
- import subprocess
- def main(command, libpath=[], vars={}):
- """Pass:
- command is a sequence (e.g. a list) of strings. The first item in the list
- must be the command name, the rest are its arguments.
- libpath is a sequence of directory pathnames. These will be appended to
- the platform-specific dynamic library search path environment variable.
- vars is a dict of arbitrary (var, value) pairs to be added to the
- environment before running 'command'.
- This function runs the specified command, waits for it to terminate and
- returns its return code. This will be negative if the command terminated
- with a signal, else it will be the process's specified exit code.
- """
- # Handle platform-dependent libpath first.
- if sys.platform == "win32":
- lpvars = ["PATH"]
- elif sys.platform == "darwin":
- lpvars = ["LD_LIBRARY_PATH", "DYLD_LIBRARY_PATH"]
- elif sys.platform.startswith("linux"):
- lpvars = ["LD_LIBRARY_PATH"]
- else:
- # No idea what the right pathname might be! But only crump if this
- # feature is requested.
- if libpath:
- raise NotImplemented("run_build_test: unknown platform %s" % sys.platform)
- lpvars = []
- for var in lpvars:
- # Split the existing path. Bear in mind that the variable in question
- # might not exist; instead of KeyError, just use an empty string.
- dirs = os.environ.get(var, "").split(os.pathsep)
- # Append the sequence in libpath
- print "%s += %r" % (var, libpath)
- dirs.extend(libpath)
- # Now rebuild the path string. This way we use a minimum of separators
- # -- and we avoid adding a pointless separator when libpath is empty.
- os.environ[var] = os.pathsep.join(dirs)
- # Now handle arbitrary environment variables. The tricky part is ensuring
- # that all the keys and values we try to pass are actually strings.
- if vars:
- print "Setting:"
- for key, value in vars.iteritems():
- print "%s=%s" % (key, value)
- os.environ.update(dict([(str(key), str(value)) for key, value in vars.iteritems()]))
- # Run the child process.
- print "Running: %s" % " ".join(command)
- return subprocess.call(command)
- if __name__ == "__main__":
- from optparse import OptionParser
- parser = OptionParser(usage="usage: %prog [options] command args...")
- # We want optparse support for the options we ourselves handle -- but we
- # DO NOT want it looking at options for the executable we intend to run,
- # rejecting them as invalid because we don't define them. So configure the
- # parser to stop looking for options as soon as it sees the first
- # positional argument (traditional Unix syntax).
- parser.disable_interspersed_args()
- parser.add_option("-D", "--define", dest="vars", default=[], action="append",
- metavar="VAR=value",
- help="Add VAR=value to the env variables defined")
- parser.add_option("-l", "--libpath", dest="libpath", default=[], action="append",
- metavar="DIR",
- help="Add DIR to the platform-dependent DLL search path")
- opts, args = parser.parse_args()
- # What we have in opts.vars is a list of strings of the form "VAR=value"
- # or possibly just "VAR". What we want is a dict. We can build that dict by
- # constructing a list of ["VAR", "value"] pairs -- so split each
- # "VAR=value" string on the '=' sign (but only once, in case we have
- # "VAR=some=user=string"). To handle the case of just "VAR", append "" to
- # the list returned by split(), then slice off anything after the pair we
- # want.
- rc = main(command=args, libpath=opts.libpath,
- vars=dict([(pair.split('=', 1) + [""])[:2] for pair in opts.vars]))
- if rc not in (None, 0):
- print >>sys.stderr, "Failure running: %s" % " ".join(args)
- print >>sys.stderr, "Error: %s" % rc
- sys.exit((rc < 0) and 255 or rc)