Missing dependency, client example code

[paullouisageneau]

Missing dependency, client example code

[paullouisageneau]

Indeed, but you'll need to install this one yourself from deps/nlohmann_json if you want it available to an external project, since libdatachannel itself does not depend on it.

[murat-dogan]

$ git submodule update --init --recursive

Did you execute this command before build?

[stevedanomodolor]

Yes and it didnot run, Am i supposed to link the plog library in the cmakelist?

[paullouisageneau]

The plog library is indeed not installed automatically. This should be solved by d0a1b2c

[paullouisageneau]

Also, you can simply build from the top folder, it should build everything successfully, provided you updated the submodules as @murat-dogan pointed.

[stevedanomodolor]

This is the result i get when i rebuild the library

git submodule update --init --recursive

Submodule 'deps/json' (https://github.com/nlohmann/json.git) registered for path 'deps/json'
Submodule 'deps/libjuice' (https://github.com/paullouisageneau/libjuice) registered for path 'deps/libjuice'
Submodule 'deps/plog' (https://github.com/SergiusTheBest/plog) registered for path 'deps/plog'
Submodule 'usrsctp' (https://github.com/sctplab/usrsctp.git) registered for path 'deps/usrsctp'
Cloning into '/home/stevedan/external_library/libdatachannel/deps/json'...
Cloning into '/home/stevedan/external_library/libdatachannel/deps/libjuice'...
Cloning into '/home/stevedan/external_library/libdatachannel/deps/plog'...
Cloning into '/home/stevedan/external_library/libdatachannel/deps/usrsctp'...
Submodule path 'deps/json': checked out '973c52dd4a9e92ede5ca4afe8b3d01ef677dc57f'
Submodule path 'deps/libjuice': checked out '6f6faa578396960a5f426582ed12db2747e4f68d'
Submodule path 'deps/plog': checked out '47883f060999d536edfc41a71fb822c35a195938'
Submodule path 'deps/usrsctp': checked out 'aa10d60bc209028b7dd0370b2d5af9f14051fd23'

cmake -DUSE_JUICE=1 -DUSE_GNUTLS=0 ..

-- The CXX compiler identification is GNU 9.2.1
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Looking for C++ include pthread.h
-- Looking for C++ include pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- Check if compiler accepts -pthread
-- Check if compiler accepts -pthread - yes
-- Found Threads: TRUE  
-- The C compiler identification is GNU 9.2.1
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- No build type selected, using DEBUG
-- Looking for include file sys/queue.h
-- Looking for include file sys/queue.h - found
-- Looking for include files sys/socket.h, linux/if_addr.h
-- Looking for include files sys/socket.h, linux/if_addr.h - found
-- Looking for include files sys/socket.h, linux/rtnetlink.h
-- Looking for include files sys/socket.h, linux/rtnetlink.h - found
-- Looking for 4 include files sys/types.h, ..., netinet/ip_icmp.h
-- Looking for 4 include files sys/types.h, ..., netinet/ip_icmp.h - found
-- Looking for include file stdatomic.h
-- Looking for include file stdatomic.h - found
-- Looking for usrsctp.h
-- Looking for usrsctp.h - found
-- Performing Test have_sa_len
-- Performing Test have_sa_len - Failed
-- Performing Test have_sin_len
-- Performing Test have_sin_len - Failed
-- Performing Test have_sin6_len
-- Performing Test have_sin6_len - Failed
-- Performing Test have_sconn_len
-- Performing Test have_sconn_len - Failed
-- Performing Test has_wfloat_equal
-- Performing Test has_wfloat_equal - Success
-- Performing Test has_wshadow
-- Performing Test has_wshadow - Success
-- Performing Test has_wpointer_aritih
-- Performing Test has_wpointer_aritih - Success
-- Performing Test has_wunreachable_code
-- Performing Test has_wunreachable_code - Success
-- Performing Test has_winit_self
-- Performing Test has_winit_self - Success
-- Performing Test has_wno_unused_function
-- Performing Test has_wno_unused_function - Success
-- Performing Test has_wno_unused_parameter
-- Performing Test has_wno_unused_parameter - Success
-- Performing Test has_wno_unreachable_code
-- Performing Test has_wno_unreachable_code - Success
-- Performing Test has_wstrict_prototypes
-- Performing Test has_wstrict_prototypes - Success
-- Compiler flags (CMAKE_C_FLAGS):  -std=c99 -pedantic -Wall -Wextra -Wfloat-equal -Wshadow -Wpointer-arith -Wunreachable-code -Winit-self -Wno-unused-function -Wno-unused-parameter -Wno-unreachable-code -Wstrict-prototypes -Werror
-- Performing Test has_wno_address_of_packet_member
-- Performing Test has_wno_address_of_packet_member - Success
-- Found OpenSSL: /usr/lib/x86_64-linux-gnu/libcrypto.so (found version "1.1.1c")  
-- Using the single-header code from /home/stevedan/external_library/libdatachannel/deps/json/single_include/
-- Configuring done
-- Generating done
-- Build files have been written to: /home/stevedan/external_library/libdatachannel/build

Part of the make command, it build correctly
...

[25%] Building C object deps/usrsctp/usrsctplib/CMakeFiles/usrsctp-static.dir/netinet/sctp_input.c.o
/home/stevedan/external_library/libdatachannel/deps/usrsctp/usrsctplib/netinet/sctp_input.c: In function ‘sctp_common_input_processing’:
/home/stevedan/external_library/libdatachannel/deps/usrsctp/usrsctplib/netinet/sctp_input.c:5883:47: warning: ‘%s’ directive output may be truncated writing up to 28 bytes into a region of size 22 [-Wformat-truncation=]
 5883 |    snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__);
      |                                               ^~                       ~~~~~~~~
/home/stevedan/external_library/libdatachannel/deps/usrsctp/usrsctplib/netinet/sctp_input.c:5883:4: note: ‘snprintf’ output between 107 and 135 bytes into a destination of size 128
 5883 |    snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__);
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/stevedan/external_library/libdatachannel/deps/usrsctp/usrsctplib/netinet/sctp_input.c:5966:47: warning: ‘%s’ directive output may be truncated writing up to 28 bytes into a region of size 22 [-Wformat-truncation=]
 5966 |    snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__);
      |                                               ^~                       ~~~~~~~~
/home/stevedan/external_library/libdatachannel/deps/usrsctp/usrsctplib/netinet/sctp_input.c:5966:4: note: ‘snprintf’ output between 107 and 135 bytes into a destination of size 128
 5966 |    snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__);
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/stevedan/external_library/libdatachannel/deps/usrsctp/usrsctplib/netinet/sctp_input.c:6052:47: warning: ‘%s’ directive output may be truncated writing up to 28 bytes into a region of size 22 [-Wformat-truncation=]
 6052 |    snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__);
      |                                               ^~                       ~~~~~~~~
/home/stevedan/external_library/libdatachannel/deps/usrsctp/usrsctplib/netinet/sctp_input.c:6052:4: note: ‘snprintf’ output between 107 and 135 bytes into a destination of size 128
 6052 |    snprintf(msg, sizeof(msg), "OOTB, %s:%d at %s", __FILE__, __LINE__, __func__);
      |    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[ 27%] Building C object deps/usrsctp/usrsctplib/CMakeFiles/usrsctp-static.dir/netinet/sctp_output.c.o

...

[ 77%] Built target datachannel
Scanning dependencies of target datachannel-tests
[ 80%] Building CXX object CMakeFiles/datachannel-tests.dir/test/main.cpp.o
[ 80%] Building CXX object CMakeFiles/datachannel-tests.dir/test/connectivity.cpp.o
[ 83%] Building CXX object CMakeFiles/datachannel-tests.dir/test/capi.cpp.o
[ 83%] Building CXX object CMakeFiles/datachannel-tests.dir/test/websocket.cpp.o
[ 86%] Linking CXX executable tests
[ 86%] Built target datachannel-tests
Scanning dependencies of target datachannel-client
[ 86%] Building CXX object examples/client/CMakeFiles/datachannel-client.dir/main.cpp.o
[ 88%] Linking CXX executable client
[ 88%] Built target datachannel-client
Scanning dependencies of target datachannel-copy-paste-answerer
[ 88%] Building CXX object examples/copy-paste/CMakeFiles/datachannel-copy-paste-answerer.dir/answerer.cpp.o
[ 91%] Linking CXX executable answerer
[ 91%] Built target datachannel-copy-paste-answerer
Scanning dependencies of target datachannel-copy-paste-offerer
[ 91%] Building CXX object examples/copy-paste/CMakeFiles/datachannel-copy-paste-offerer.dir/offerer.cpp.o
[ 94%] Linking CXX executable offerer
[ 94%] Built target datachannel-copy-paste-offerer
Scanning dependencies of target offerer
[ 97%] Building C object examples/copy-paste-capi/CMakeFiles/offerer.dir/offerer.c.o
[ 97%] Linking C executable offerer
[ 97%] Built target offerer
Scanning dependencies of target answerer
[ 97%] Building C object examples/copy-paste-capi/CMakeFiles/answerer.dir/answerer.c.o
[100%] Linking C executable answerer
[100%] Built target answerer

Still get the same error

In file included from /usr/local/include/rtc/include.hpp:28,
                 from /usr/local/include/rtc/rtc.hpp:20,
                 from /home/stevedan/Desktop/TESTING/examples/client/main.cpp:23:
/usr/local/include/rtc/log.hpp:22:10: fatal error: plog/Log.h: No such file or directory
   22 | #include "plog/Log.h"
      |          ^~~~~~~~~~~~
compilation terminated.
make[2]: *** [CMakeFiles/datachannel-client.dir/build.make:63: CMakeFiles/datachannel-client.dir/main.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:73: CMakeFiles/datachannel-client.dir/all] Error 2
make: *** [Makefile:84: all] Error 2

[paullouisageneau]

Did you reinstall the library after rebuilding it?

[stevedanomodolor]

When I use the sudo install, i get this

install: missing file operand
Try 'install --help' for more information.

Thank you very help

[paullouisageneau]

The command is actually sudo make install from your build directory.

[stevedanomodolor]

Wow, i feel so stupid jajajaj, sorry for the inconvenience and thank you very much for you help

but now when I run, I get

cannot find -lnlohmann_json

This should be installed with the dependencies right?

[stevedanomodolor]

Okay, thank you very much for you help,