Include path and Library

[machinezone]

Include path and Library

[EhsanVahab]

I find that deflateEnd function is defined as part of the zlib library. so I added #include "<zlib.h>" to the IXWebSocketPerMessageDeflateCodec.cpp then I rebuilt it.
but it's just same to same.

[bsergean]

You need to add 'z' to the linker options, or 'link with zlib'. Do you have an option with Eclipse to specify 'link options' ? (option A)

If you cannot find it, you can manually add the files in third_party/zlib (option B)

    adler32.c
    compress.c
    crc32.c
    deflate.c
    gzclose.c
    gzlib.c
    gzread.c
    gzwrite.c
    inflate.c
    infback.c
    inftrees.c
    inffast.c
    trees.c
    uncompr.c
    zutil.c

You'll need to add those files to your project (from the zlib CMakeLists.txt).

It is definitely cleaner to go with option A if you are on mac or Linux. On Windows zlib doesn't come with the OS so you need to go with option B.

[EhsanVahab]

It came to my mind too and I did.
But the problem wasn't resolved

[bsergean]

You need to update the 'header include path', to find that zlib header. You don't need to change the source code. Don't you have such a preference in Eclipse ?

…

On Jun 3, 2019, at 7:39 AM, EhsanVahab ***@***.***> wrote: It came to my mind too and I did. But the problem wasn't resolved — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#87?email_source=notifications&email_token=AC2O6UJPA6PC62JQJMZGHSDPYUUI3A5CNFSM4HSFV4WKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODWZTRUQ#issuecomment-498284754>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AC2O6UKYVOFLTGOCCTSLWWLPYUUI3ANCNFSM4HSFV4WA>.

[EhsanVahab]

yes I have.
I have referenced them and built by: -I/usr/local/include/ -L/usr/local/lib -lz
is there any difference between the ubuntu default zlib and which you put in the third_part ?
I'm using the zlib installed by ubuntu package :sudo apt-get -y install libz-dev

[bsergean]

That's quite strange. The headers should go to /usr/include/zlib.h

#include "<zlib.h>"

That looks like a typo. Try:

#include <zlib.h>

[EhsanVahab]

Yes this seemingly simple problem is driving me crazy.
I have all the zlib function when I use Eclipse auto correction
look at the following sample, it's built successfully :

#include <iostream>
#include <fstream>
#include <sstream>
#include <vector>
#include <condition_variable>
#include <mutex>
#include <chrono>
#include <zlib.h>
#include <ixwebsocket/IXWebSocket.h>

using namespace std;


int main(int argc, char** argv)
{

z_streamp a;
deflate(a,0);


}

[EhsanVahab]

maybe there's something wrong with my installation commands. I've executed following commands to make:

git clone https://github.com/machinezone/IXWebSocket.git
cd IXWebSocket
mkdir build
cd build
cmake ..
sudo make
sudo make install
sudo ldconfig

[bsergean]

No ldconfig is required, and you shouldn't sudo make, just sudo make install.

…

On Jun 3, 2019, at 1:48 PM, EhsanVahab ***@***.***> wrote: maybe there's something wrong in my installation commands. I've executed following command to make: git clone https://github.com/machinezone/IXWebSocket.git cd IXWebSocket mkdir build cd build cmake .. sudo make sudo make install sudo ldconfig — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#87?email_source=notifications&email_token=AC2O6ULUL5WU74V5RH7NN7LPYV7QHA5CNFSM4HSFV4WKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODW2UYAY#issuecomment-498420739>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AC2O6UP5PQUGLMMUXMUCQ4TPYV7QHANCNFSM4HSFV4WA>.

[EhsanVahab]

everything went well but sadly the problem remains.
cmake's result:
cmake: /usr/local/lib/libcurl.so.4: no version information available (required by cmake) -- The C compiler identification is GNU 7.2.0 -- The CXX compiler identification is GNU 7.2.0 -- 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 -- 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 pthread.h -- Looking for pthread.h - found -- Looking for pthread_create -- Looking for pthread_create - not found -- Looking for pthread_create in pthreads -- Looking for pthread_create in pthreads - not found -- Looking for pthread_create in pthread -- Looking for pthread_create in pthread - found -- Found Threads: TRUE -- Configuring done -- Generating done -- Build files have been written to: /home/userver/Project/IXWebSocket/build

sudo make install result :
/usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) Scanning dependencies of target ixwebsocket /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 3%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXSocket.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 7%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXSocketServer.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 11%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXSocketConnect.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 14%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXSocketFactory.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 18%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXDNSLookup.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 22%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXCancellationRequest.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 25%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXNetSystem.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 29%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXWebSocket.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 33%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXWebSocketServer.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 37%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXWebSocketTransport.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 40%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXWebSocketHandshake.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 44%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXWebSocketPerMessageDeflate.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 48%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXWebSocketPerMessageDeflateCodec.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 51%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXWebSocketPerMessageDeflateOptions.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 55%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXWebSocketHttpHeaders.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 59%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXHttpClient.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 62%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXUrlParser.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 66%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/LUrlParser.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 70%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXSelectInterrupt.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 74%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXSelectInterruptFactory.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 77%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXConnectionState.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 81%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXWebSocketCloseConstants.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 85%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXWebSocketMessageQueue.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 88%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXSelectInterruptPipe.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 92%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/linux/IXSetThreadName_linux.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [ 96%] Building CXX object CMakeFiles/ixwebsocket.dir/ixwebsocket/IXSelectInterruptEventFd.cpp.o /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [100%] Linking CXX static library libixwebsocket.a /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) [100%] Built target ixwebsocket /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) Install the project... /usr/bin/cmake: /usr/local/lib/libcurl.so.4: no version information available (required by /usr/bin/cmake) -- Install configuration: "" -- Installing: /usr/local/lib/libixwebsocket.a -- Installing: /usr/local/include/ixwebsocket/IXSocket.h -- Installing: /usr/local/include/ixwebsocket/IXSocketServer.h -- Installing: /usr/local/include/ixwebsocket/IXSocketConnect.h -- Installing: /usr/local/include/ixwebsocket/IXSocketFactory.h -- Installing: /usr/local/include/ixwebsocket/IXSetThreadName.h -- Installing: /usr/local/include/ixwebsocket/IXDNSLookup.h -- Installing: /usr/local/include/ixwebsocket/IXCancellationRequest.h -- Installing: /usr/local/include/ixwebsocket/IXNetSystem.h -- Installing: /usr/local/include/ixwebsocket/IXProgressCallback.h -- Installing: /usr/local/include/ixwebsocket/IXWebSocket.h -- Installing: /usr/local/include/ixwebsocket/IXWebSocketServer.h -- Installing: /usr/local/include/ixwebsocket/IXWebSocketTransport.h -- Installing: /usr/local/include/ixwebsocket/IXWebSocketHandshake.h -- Installing: /usr/local/include/ixwebsocket/IXWebSocketSendInfo.h -- Installing: /usr/local/include/ixwebsocket/IXWebSocketErrorInfo.h -- Installing: /usr/local/include/ixwebsocket/IXWebSocketPerMessageDeflate.h -- Installing: /usr/local/include/ixwebsocket/IXWebSocketPerMessageDeflateCodec.h -- Installing: /usr/local/include/ixwebsocket/IXWebSocketPerMessageDeflateOptions.h -- Installing: /usr/local/include/ixwebsocket/IXWebSocketHttpHeaders.h -- Installing: /usr/local/include/ixwebsocket/libwshandshake.hpp -- Installing: /usr/local/include/ixwebsocket/IXHttpClient.h -- Installing: /usr/local/include/ixwebsocket/IXUrlParser.h -- Installing: /usr/local/include/ixwebsocket/LUrlParser.h -- Installing: /usr/local/include/ixwebsocket/IXSelectInterrupt.h -- Installing: /usr/local/include/ixwebsocket/IXSelectInterruptFactory.h -- Installing: /usr/local/include/ixwebsocket/IXConnectionState.h -- Installing: /usr/local/include/ixwebsocket/IXWebSocketCloseConstants.h -- Installing: /usr/local/include/ixwebsocket/IXWebSocketMessageQueue.h -- Installing: /usr/local/include/ixwebsocket/IXSelectInterruptEventFd.h

[EhsanVahab]

and it's my compiler commands and outputs

Building file: ../HelloObject.cpp
Invoking: GCC C++ Compiler
g++ -I/usr/local/include/opencv -I/usr/local/include/curl -I/usr/local/include/ixwebsocket -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"HelloObject.d" -MT"HelloObject.o" -o "HelloObject.o" "../HelloObject.cpp"
Finished building: ../HelloObject.cpp
 
Building target: Hello-Upload
Invoking: GCC C++ Linker
g++ -L/usr/local/lib -o "Hello-Upload"  ./HelloObject.o   -lpthread -lz -lixwebsocket -lcurl -ljsoncpp
/usr/local/lib/libixwebsocket.a(IXWebSocket.cpp.o): In function `std::thread::thread<void (ix::WebSocket::*)(), ix::WebSocket*>(void (ix::WebSocket::*&&)(), ix::WebSocket*&&)':
IXWebSocket.cpp:(.text._ZNSt6threadC2IMN2ix9WebSocketEFvvEJPS2_EEEOT_DpOT0_[_ZNSt6threadC5IMN2ix9WebSocketEFvvEJPS2_EEEOT_DpOT0_]+0x33): undefined reference to `pthread_create'
/usr/local/lib/libixwebsocket.a(IXWebSocketPerMessageDeflateCodec.cpp.o): In function `ix::WebSocketPerMessageDeflateCompressor::~WebSocketPerMessageDeflateCompressor()':
IXWebSocketPerMessageDeflateCodec.cpp:(.text+0x82): undefined reference to `deflateEnd'
/usr/local/lib/libixwebsocket.a(IXWebSocketPerMessageDeflateCodec.cpp.o): In function `ix::WebSocketPerMessageDeflateCompressor::init(unsigned char, bool)':
IXWebSocketPerMessageDeflateCodec.cpp:(.text+0xf4): undefined reference to `deflateInit2_'
/usr/local/lib/libixwebsocket.a(IXWebSocketPerMessageDeflateCodec.cpp.o): In function `ix::WebSocketPerMessageDeflateCompressor::compress(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)':
IXWebSocketPerMessageDeflateCodec.cpp:(.text+0x30d): undefined reference to `deflate'
/usr/local/lib/libixwebsocket.a(IXWebSocketPerMessageDeflateCodec.cpp.o): In function `ix::WebSocketPerMessageDeflateDecompressor::~WebSocketPerMessageDeflateDecompressor()':
IXWebSocketPerMessageDeflateCodec.cpp:(.text+0x44c): undefined reference to `inflateEnd'
/usr/local/lib/libixwebsocket.a(IXWebSocketPerMessageDeflateCodec.cpp.o): In function `ix::WebSocketPerMessageDeflateDecompressor::init(unsigned char, bool)':
IXWebSocketPerMessageDeflateCodec.cpp:(.text+0x4ab): undefined reference to `inflateInit2_'
/usr/local/lib/libixwebsocket.a(IXWebSocketPerMessageDeflateCodec.cpp.o): In function `ix::WebSocketPerMessageDeflateDecompressor::decompress(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)':
IXWebSocketPerMessageDeflateCodec.cpp:(.text+0x5e1): undefined reference to `inflate'
/usr/local/lib/libixwebsocket.a(IXSetThreadName_linux.cpp.o): In function `ix::setThreadName(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
IXSetThreadName_linux.cpp:(.text+0x51): undefined reference to `pthread_setname_np'
/usr/local/lib/libixwebsocket.a(IXDNSLookup.cpp.o): In function `std::thread::thread<void (ix::DNSLookup::*)(unsigned long, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int), ix::DNSLookup*, unsigned long&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int&>(void (ix::DNSLookup::*&&)(unsigned long, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int), ix::DNSLookup*&&, unsigned long&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int&)':
IXDNSLookup.cpp:(.text._ZNSt6threadC2IMN2ix9DNSLookupEFvmRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEiEJPS2_RmSA_RiEEEOT_DpOT0_[_ZNSt6threadC5IMN2ix9DNSLookupEFvmRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEiEJPS2_RmSA_RiEEEOT_DpOT0_]+0x5d): undefined reference to `pthread_create'
collect2: error: ld returned 1 exit status
makefile:44: recipe for target 'Hello-Upload' failed
make: *** [Hello-Upload] Error 1

[bsergean]

Maybe it's a linker order problem. Try g++ -L/usr/local/lib -o "Hello-Upload" ./HelloObject.o -lixwebsocket -lcurl -ljsoncpp -lz -lpthread

…

On Jun 3, 2019, at 2:09 PM, EhsanVahab ***@***.***> wrote: g++ -L/usr/local/lib -o "Hello-Upload" ./HelloObject.o -lpthread -lz -lixwebsocket -lcurl -ljsoncpp

[EhsanVahab]

unbelievable 👍
it's solved.
I'm very very thankful for your guide and time you've spent.
I wish I will help you one day

[bsergean]

You're welcome ! Thanks for using that library.

…

On Jun 3, 2019, at 2:13 PM, EhsanVahab ***@***.***> wrote: unbelievable 👍 it's solved. I'm very very thankful for your guide and time you've spent. I wish I will help you one day — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#87?email_source=notifications&email_token=AC2O6UOBEEWABBLWPWXWXETPYWCQNA5CNFSM4HSFV4WKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODW2WXBI#issuecomment-498428805>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AC2O6ULANIFWOTOBDPRWWF3PYWCQNANCNFSM4HSFV4WA>.