Gabe Black has uploaded this change for review. (
https://gem5-review.googlesource.com/c/public/gem5/+/37277 )
Change subject: scons: Add support for GRPC protobuf files.
......................................................................
scons: Add support for GRPC protobuf files.
These files are used to generate stubs for calling across GRPC
protocols, an RPC mechanism which is based around the protocol buffer
system.
The support for these files is heavily based on and calls into the
existing protobuf file support, but with the extra step which generates
the additional .grpc.pb.cc and .grpc.pb.h files.
Change-Id: I89022928c08aa9f7ed024b7380ddcc54ca75b55e
---
M src/SConscript
1 file changed, 40 insertions(+), 0 deletions(-)
diff --git a/src/SConscript b/src/SConscript
index 141a29d..e77add8 100644
--- a/src/SConscript
+++ b/src/SConscript
@@ -41,6 +41,7 @@
import array
import bisect
+import distutils.spawn
import functools
import imp
import os
@@ -434,6 +435,44 @@
append={'CXXFLAGS': '-Wno-array-bounds'})
+
+env['PROTOC_GRPC'] = distutils.spawn.find_executable('grpc_cpp_plugin')
+if env['PROTOC_GRPC']:
+ env.Append(LIBS=['grpc++'])
+
+def protoc_grpc_emitter(target, source, env):
+ root, ext = os.path.splitext(source[0].get_abspath())
+ return [root + '.grpc.pb.cc', root + '.grpc.pb.h'], source
+
+env.Append(BUILDERS={'GrpcProtoBufCC' : Builder(
+ action=MakeAction('${PROTOC} --grpc_out ${BUILDDIR} '
+ '--plugin=protoc-gen-grpc=${PROTOC_GRPC} '
+ '--proto_path ${BUILDDIR} $SOURCE',
+ Transform("PROTOC")),
+ emitter=protoc_grpc_emitter
+ )})
+
+class GrpcProtoBuf(SourceFile):
+ '''Add a GRPC protocol buffer to the build'''
+
+ def __init__(self, source, tags=None, add_tags=None):
+ '''Specify the source file, and any tags'''
+
+ super(GrpcProtoBuf, self).__init__(source, tags, add_tags)
+
+ if not env['PROTOC_GRPC']:
+ error('No grpc_cpp_plugin found')
+
+ self.cc_file, self.hh_file = env.GrpcProtoBufCC(source=source)
+
+ # We still need to build the normal protobuf code too.
+ self.protobuf = ProtoBuf(source, tags=self.tags)
+
+ # Add the C++ source file.
+ Source(self.cc_file, tags=self.tags,
+ append={'CXXFLAGS': '-Wno-array-bounds'})
+
+
exectuable_classes = []
class ExecutableMeta(type):
'''Meta class for Executables.'''
@@ -572,6 +611,7 @@
Export('PySource')
Export('SimObject')
Export('ProtoBuf')
+Export('GrpcProtoBuf')
Export('Executable')
Export('UnitTest')
Export('GTest')
--
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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: I89022928c08aa9f7ed024b7380ddcc54ca75b55e
Gerrit-Change-Number: 37277
Gerrit-PatchSet: 1
Gerrit-Owner: Gabe Black <[email protected]>
Gerrit-MessageType: newchange
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