Experimental Physics and
Industrial Control System

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<== Date ==>		<== Thread ==>

Subject:	compilation error with redis
From:	Pierrick M Hanlet via Tech-talk <tech-talk at aps.anl.gov>
To:	"tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Date:	Tue, 17 May 2022 17:03:39 +0000

Hi all,
One of my colleagues had the idea of writing all of his DAQ output to redis++. My job
then, is to simply use functions for reading/writing to redis. He wrote a standalone
program that builds and functions as expected.

When I attempt to build with redis++, I run into compilation errors.

I'm using v7.0.5 on SL7 linux box x-86_64. I created a new ioc as usual, and have
added nothing extra to it. I simply have the c++ file:
#include <sw/redis++/redis++.h>

short test() {
return(0);
}

epicsRegisterFunction(test);

In the Makefile, I simply add the line:
test_SRCS += test.cpp

The only other modification that I have is in ./base/configure/CONFIG_COMMON, I've added
the c++11 flag.

When I compile and it gets to my test.ccp file, I get:
/usr/bin/g++ -D_GNU_SOURCE -D_DEFAULT_SOURCE           -D_X86_64_ -DUNIX -Dlinux      -O3   -Wall    -std=c++11 -mtune=generic      -m64 -I. -I../O.Common -I. -I. -I.. -I../../../include/compiler/gcc -I../../../include/os/Linux -I../../../include -I/usr/local/epics/base/include/compiler/gcc -I/usr/local/epics/base/include/os/Linux -I/usr/local/epics/base/include        -c ../test.cpp
<command-line>:0:6: error: expected identifier before numeric constant
<command-line>:0:6: error: expected ‘}’ before numeric constant
<command-line>:0:6: error: expected unqualified-id before numeric constant
In file included from /usr/local/include/sw/redis++/connection_pool.h:26:0,
                 from /usr/local/include/sw/redis++/redis.h:25,
                 from /usr/local/include/sw/redis++/redis++.h:20,
                 from ../test.cpp:14:
/usr/local/include/sw/redis++/connection.h:56:5: error: ‘ConnectionType’ does not name a type
     ConnectionType type = ConnectionType::TCP;
     ^
/usr/local/include/sw/redis++/connection.h:76:5: error: ‘tls’ does not name a type
     tls::TlsOptions tls;
     ^
/usr/local/include/sw/redis++/connection.h:157:5: error: ‘ReplyUPtr’ does not name a type
     ReplyUPtr recv(bool handle_error_reply = true);
     ^
/usr/local/include/sw/redis++/connection.h:200:5: error: ‘tls’ does not name a type
     tls::TlsContextUPtr _tls_ctx;
     ^
/usr/local/include/sw/redis++/connection.h: In member function ‘void sw::Connection::send(const char*, Args&& ...)’:
/usr/local/include/sw/redis++/connection.h:221:51: error: there are no arguments to ‘throw_error’ that depend on a template parameter, so a declaration of ‘throw_error’ must be available [-fpermissive]
         throw_error(*ctx, "Failed to send command");
                                                   ^
/usr/local/include/sw/redis++/connection.h:221:51: note: (if you use ‘-fpermissive’, G++ will accept your code, but allowing the use of an undeclared name is deprecated)
/usr/local/include/sw/redis++/connection.h: At global scope:
/usr/local/include/sw/redis++/connection.h:235:1: error: expected declaration before ‘}’ token
}
^
make[3]: *** [test.o] Error 1
make[3]: Leaving directory `/scratch/home/hanlet/epicsDEV/iocTops/testRedis/testApp/src/O.linux-x86_64'
make[2]: *** [install.linux-x86_64] Error 2
make[2]: Leaving directory `/scratch/home/hanlet/epicsDEV/iocTops/testRedis/testApp/src'
make[1]: *** [src.install] Error 2
make[1]: Leaving directory `/scratch/home/hanlet/epicsDEV/iocTops/testRedis/testApp'
make: *** [testApp.install] Error 2

I'm stumped. Any help would be greatly appreciated.
Best wishes,
Pierrick

-- 
Pierrick Hanlet
Fermi National Accelerator
Accelerator Front End Controls
+1-630-840-5555 -- lab
+1-312-687-4980 -- mobile

"Whether you think you can or think you can't, you're right" -- Henry Ford

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ANJ, 14 Sep 2022

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System