-q means quiet. It transforms the behavior of grep to exit with a "true" or "false" status if there was a match or not.
At the end of the day, this is really just a quick helper, as indicated by the Makefile's comments. If you're certain everything is in place on your system, remove these constrains from the example's Makefile. On Fri, Sep 14, 2018 at 6:34 AM Simon Chamlian <[email protected]> wrote: > Thanks Nicolas. > > I did follow their instructions and I got: > > > ============================================================================ > Testsuite summary for Protocol Buffers 3.6.1 > > ============================================================================ > # TOTAL: 7 > # PASS: 7 > # SKIP: 0 > # XFAIL: 0 > # FAIL: 0 > # XPASS: 0 > # ERROR: 0 > > ============================================================================ > > > But still getting same error message with the example: > > jay@Nembuntu:~/grpc/examples/cpp/helloworld$ make > DEPENDENCY ERROR > > You don't have the grpc c++ protobuf plugin installed in your path. > Please install grpc. You can find it here: > > https://github.com/grpc/grpc > > Here is what I get when trying to detect if you have the plugin: > > which grpc_cpp_plugin > Makefile:104: recipe for target 'system-check' failed > make: [system-check] Error 1 (ignored) > > > Makefile:104: recipe for target 'system-check' failed > make: *** [system-check] Error 1 > jay@Nembuntu:~/grpc/examples/cpp/helloworld$ ~ > > > When I look in the *Makefile*, I see that this error message is generated > on: > ifneq ($(HAS_PLUGIN),true) > @echo " DEPENDENCY ERROR" > @echo > @echo "You don't have the grpc c++ protobuf plugin installed in your > path." > @echo "Please install grpc. You can find it here:" > @echo > @echo " https://github.com/grpc/grpc"; > @echo > @echo "Here is what I get when trying to detect if you have the > plugin:" > @echo > -which $(GRPC_CPP_PLUGIN) > @echo > @echo > endif > > where > PROTOC = protoc > PROTOC_CHECK_CMD = $(PROTOC) --version | grep -q libprotoc.3 > PLUGIN_CHECK_CMD = which $(GRPC_CPP_PLUGIN) > HAS_PLUGIN = $(shell $(PLUGIN_CHECK_CMD) > /dev/null && echo true || echo > false > > So basically, it is doing a (*protoc --version | grep -q libprotoc.3*): > > jay@Nembuntu:~/grpc/examples/cpp/helloworld$ protoc --version | grep *-q* > libprotoc.3 > jay@Nembuntu:~/grpc/examples/cpp/helloworld$ > > > But > > jay@Nembuntu:~/grpc/examples/cpp/helloworld$ protoc --version > libprotoc 3.6.1 > > > jay@Nembuntu:~/grpc/examples/cpp/helloworld$ protoc --version | grep > libprotoc.3 > libprotoc 3.6.1 > > > Could it be that the* -q *in the grep is incorrect? > > S. > > > > > > > On Thu, Sep 13, 2018 at 3:43 PM, Nicolas Noble <[email protected]> > wrote: > >> At that point, your issue is with protobuf, not with grpc. I'd suggest >> following their own installation instructions separately at >> https://github.com/protocolbuffers/protobuf/blob/master/src/README.md >> >> On Thu, Sep 13, 2018 at 11:19 AM Simon Chamlian <[email protected]> >> wrote: >> >>> Hi, >>> >>> Previously I installed grpc and ran the example on a Ubuntu 16.04 >>> machine. >>> >>> I followed the instructions given in: >>> >>> https://grpc.io/docs/quickstart/cpp.html >>> >>> And it worked like a charm. >>> >>> Now, I am trying to re-install it on a new machine (again Ubuntu 16.04) >>> without success. >>> >>> I keep on getting: >>> >>> jay@Nembuntu:~/grpc/examples/cpp/helloworld$ make >>> DEPENDENCY ERROR >>> >>> You don't have the grpc c++ protobuf plugin installed in your path. >>> Please install grpc. You can find it here: >>> >>> https://github.com/grpc/grpc >>> >>> Here is what I get when trying to detect if you have the plugin: >>> >>> which grpc_cpp_plugin >>> Makefile:104: recipe for target 'system-check' failed >>> make: [system-check] Error 1 (ignored) >>> >>> >>> Makefile:104: recipe for target 'system-check' failed >>> make: *** [system-check] Error 1 >>> jay@Nembuntu:~/grpc/examples/cpp/helloworld$ >>> >>> I checked the previous machine (protoc --version and I get: libprotoc >>> 3.5.0) >>> The new machine I get: libprotoc 3.6.1 >>> >>> I did all the hints given in; >>> https://github.com/grpc/grpc/issues/2262 >>> https://github.com/grpc/grpc/issues/13183 >>> https://github.com/grpc/grpc/issues/12422 >>> >>> >>> I tried: >>> >>> cd third_party/protobuf >>> ./autogen.sh >>> ./configure >>> make >>> make check >>> make install >>> >>> No luck. >>> >>> jay@Nembuntu:~/grpc/third_party/protobuf$ make check >>> Making check in . >>> make[1]: Entering directory '/home/jay/grpc/third_party/protobuf' >>> make check-local >>> make[2]: Entering directory '/home/jay/grpc/third_party/protobuf' >>> Making lib/libgmock.a lib/libgmock_main.a in gmock >>> /bin/sh: line 0: cd: third_party/googletest/googletest: No such file or >>> directory >>> Makefile:1964: recipe for target 'check-local' failed >>> make[2]: *** [check-local] Error 1 >>> make[2]: Leaving directory '/home/jay/grpc/third_party/protobuf' >>> Makefile:1826: recipe for target 'check-am' failed >>> make[1]: *** [check-am] Error 2 >>> make[1]: Leaving directory '/home/jay/grpc/third_party/protobuf' >>> Makefile:1538: recipe for target 'check-recursive' failed >>> make: *** [check-recursive] Error 1 >>> >>> Any hints? >>> >>> Thx, >>> S >>> >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "grpc.io" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To post to this group, send email to [email protected]. >>> Visit this group at https://groups.google.com/group/grpc-io. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/grpc-io/CANmTPBZzBJM6wfLRGUadfmdQxsHKbtMcZdhRObZ_HQ-wRC7-7g%40mail.gmail.com >>> <https://groups.google.com/d/msgid/grpc-io/CANmTPBZzBJM6wfLRGUadfmdQxsHKbtMcZdhRObZ_HQ-wRC7-7g%40mail.gmail.com?utm_medium=email&utm_source=footer> >>> . >>> For more options, visit https://groups.google.com/d/optout. >>> >> > -- You received this message because you are subscribed to the Google Groups "grpc.io" group. 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