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# Copyright 2020 Google, Inc.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met: redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer;
# redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution;
# neither the name of the copyright holders nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Import('*')
from gem5_scons import warning
from gem5_scons.util import readCommand, compareVersions
import gem5_scons
with gem5_scons.Configure(main) as conf:
# Check for the protobuf compiler
conf.env['HAVE_PROTOC'] = False
protoc_version = []
try:
protoc_version = readCommand([main['PROTOC'], '--version']).split()
except Exception as e:
warning('While checking protoc version:', str(e))
# Based on the availability of the compress stream wrappers, require 2.1.0.
min_protoc_version = '2.1.0'
# First two words should be "libprotoc x.y.z"
if len(protoc_version) < 2 or protoc_version[0] != 'libprotoc':
warning('Protocol buffer compiler (protoc) not found.\n'
'Please install protobuf-compiler for tracing support.')
elif compareVersions(protoc_version[1], min_protoc_version) < 0:
warning('protoc version', min_protoc_version, 'or newer required.\n'
'Installed version:', protoc_version[1])
else:
# Attempt to determine the appropriate include path and
# library path using pkg-config, that means we also need to
# check for pkg-config. Note that it is possible to use
# protobuf without the involvement of pkg-config. Later on we
# check go a library config check and at that point the test
# will fail if libprotobuf cannot be found.
if conf.env['HAVE_PKG_CONFIG']:
conf.CheckPkgConfig('protobuf', '--cflags', '--libs-only-L')
conf.env['HAVE_PROTOC'] = True
# If we have the protobuf compiler, also make sure we have the
# development libraries. If the check passes, libprotobuf will be
# automatically added to the LIBS environment variable. After
# this, we can use the HAVE_PROTOBUF flag to determine if we have
# got both protoc and libprotobuf available.
conf.env['CONF']['HAVE_PROTOBUF'] = conf.env['HAVE_PROTOC'] and \
conf.CheckLibWithHeader('protobuf', 'google/protobuf/message.h',
'C++', 'GOOGLE_PROTOBUF_VERIFY_VERSION;')
# If we have the compiler but not the library, print another warning.
if main['HAVE_PROTOC'] and not main['CONF']['HAVE_PROTOBUF']:
warning('Did not find protocol buffer library and/or headers.\n'
'Please install libprotobuf-dev for tracing support.')
if main['CONF']['HAVE_PROTOBUF']:
main.TagImplies('protobuf', 'gem5 lib')
# protoc relies on the fact that undefined preprocessor symbols are
# explanded to 0 but since we use -Wundef they end up generating
# warnings.
main.Append(CCFLAGS='-DPROTOBUF_INLINE_NOT_IN_HEADERS=0')