I'm trying to create a client for a web service in C. I was generated C files with the wsdl2h and soapcpp2. In netbeans I'm added the generated files and the gSOAP include dir to the project's include directories.
my main file looks like this:
#include <stdio.h>
#include <stdlib.h>
#include <soapH.h>
#include <webserviceSoap12.nsmap>
int main(int argc, char** argv) {
struct soap *soap1 = soap_new();
struct _ns1__getAllCustomer *quote;
struct _ns1__getAllCustomerResponse *quote2;
if (soap_call___ns2__getAllCustomer(soap1, NULL, NULL, quote, quote2) == SOAP_OK)
printf("asd\n");
else // an error occurred
soap_print_fault(soap1, stderr); // display the SOAP fault on the stderr stream
return (EXIT_SUCCESS);
}
I copied the most of this from the gSOAP website's getting started section.
When I try to compile i get the following error:
build/Debug/MinGW-Windows/main.o: In function `main':
\NetBeansProjects\WebServiceClient/main.c:19: undefined reference to `soap_new_LIBRARY_VERSION_REQUIRED_20808'
\NetBeansProjects\WebServiceClient/main.c:22: undefined reference to `soap_call___ns2__getAllCustomer'
\NetBeansProjects\WebServiceClient/main.c:25: undefined reference to `soap_print_fault'
If I add the "soapC.c" "soapClient.c" "soapClientLib.c" files to the project I get a bunch of more undefinied reference.
What am I doing wrong? I'm using Netbeans ide with MinGW compiler on Win7. What other libraries I need or what other files should I include?
I managed to solve the problem by adding the files "soapC.c" "soapClient.c" "stdsoap.c" to the project files and in the Project propertie - Include Directories adding the files generated by soapcpp2 and the gSOAP toolkit's gsoap directory
You will need to link in the proper libraries. You will need to add the appropriate libraries using the -l switch and you will optionally need to pass the path to where these libraries reside via -L. Also, note that the libraries ending with a ++ are typically the ones you should use if you're using C++. So, your command line shoulde include at least:
For C:
gcc ... -lgsoap -L/path/to/gsoap/binaries
For C++:
g++ ... -lgsoap++ -L/path/to/gsoap/binaries
Also, depending on whether you're using additional features such as SSL, cookies etc. you will need to link these libraries in too:
g++ ... -lgsoap++ -lgsoapssl++ -L/path/...
If you're using a different toolchain, lookup the documentation for the exact switches.
I had this problem in Debian BullsEye (11), -lgsoap++ is necessary and it was solved when I added /gsoap_library_path/libgsoap++.a to g++ compiler command line.
Related
TL;DR - I have tried all solutions I could find, nothing has worked so far.
Hello, I have searched far and wide but I cannot find an answer to my problem. When I try to compile my C program with GCC, I get an undefined reference to glfwInit(). First, I tried putting the glfw .dll in the same location as the program, which did seemingly nothing. After this I tried removing the glfw libraries from MinGW's "lib" directory and replacing them with the .dll, and adding #define GLFW_DLL to the top of my .c file (same error). I also tried changing the linking order around, adding -lopengl32 and -lgdi32, renaming one of the static libraries just in case the compiler was confused, etc. Nothing seems to be working here, but I have previously installed and developed with SDL2 in the same fashion.
main.c:
#include<stdio.h>
#include<GLFW/glfw3.h>
int main(int argc, char **argv) {
if(!glfwInit()) {
printf("Failed!");
return -1;
}
printf("Success!");
getch();
return 0;
}
Instructions to the compiler:
gcc -std=c99 -o project.exe main.c -lglfw3 -lglfw3dll
Alright, I have finally solved the problem. I followed the instructions in this video: https://www.youtube.com/watch?v=bIK95aWk-Bo. The gist of the video is that you need to download CMake as well as the GLFW version found here: https://www.glfw.org/
Then, you need to hit "Configure" after setting the source and build paths. After this, hit "Generate." Then, you need to open a command prompt and locate the newly created MakeFile. I am using Windows, which means I needed to use the command mingw32-make. The library files then built successfully!
After doing this, I put the created .dll and .a files in the MinGW "lib" folder. Then, I copied the .dll and placed it in the same directory as my executable.
I've installed libssh following the instructions and even though everything seems to be OK my compiler still returns the error "file not found" in the line "#include ". I guess it has something to do with directories or links (I have "make install" in the same folder where I downloaded it) but I don't know where should I put it so I can #include it in any project.
This is how I installed it:
I downloaded it and unzip it into the folder "libssh" on my Desktop (Mac).
Then I did
cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Debug ..
make
and finally:
sudo make install
Then in my program I have:
#include <libssh/sftp.h>
And XCode returns: "libssh/sftp.h file not found". I tried adding the libssh folder in the Desktop to the project, but I still have similar problems.
I guess I should install it (somehow) to the /usr/include folder, so that any project can use it (like pthread or many others), but I don't know how to do this.
If I include any other file in /usr/include it works fine (like ) but when I #include it returns file not found, even though if I cd to /usr/include/libssh the file libssh.h does exist.
This is the very simple sample code:
#include <stdio.h>
#include <pthread.h> //OK
#include <libssh/libssh.h> //Not OK, file not found.
int main(int argc, const char * argv[])
{
printf("Hello World!");
return 0;
}
In the tutorial is described how you have to link the library
You have two possibilities here:
As described you have to add those two lines to your code
#define LIBSSH_STATIC 1
#include <libssh/libssh.h>
You compile your code with the LIBSSH_STATIC flag.
gcc -DLIBSSH_STATIC test.c -o test.o
I thought that if you have the library in /usr/include the compiler will automatically link it. For instance, the pthread.h file is included properly without doing anything.
This is a system library which gets linked automatically most of the time. libssh is not. Thats why you have to be more specific on how to compile/link it.
Ive had a very similar problem several times and I have solved it by removing the ā¤ ā„ symbols from around my header files and using ""s and the absolute path to the header file you're including. Now this doesn't solve your libssh install problems but it will allow you to compile just the way you have it as long as you know the absolute path of your header file and all of your header's dependencies are in the respective locations that they were inteded to look for them in. Hope this helps.
I'm currently developing an application using SDL. In order to utilize it, I have already added the library and header files in the project's settings under C/C++ Build -> Settings -> Tool Settings -> Libraries/Includes. However, when I try to build a test program like
#include <stdio.h>
#include <SDL/SDL.h>
int main(int argc, char *argv[])
{
SDL_Init(SDL_INIT_EVERYTHING);
SDL_Quit();
return 0;
}
I get this beautiful error message during the link process:
d:/programme/mingw/bin/../lib/gcc/mingw32/4.6.2/../../../libmingw32.a(main.o): In function main':
C:\MinGW\msys\1.0\src\mingwrt/../mingw/main.c:73: undefined reference toWinMain#16'
Which is rather weird, given that the directory C:\MinGW doesn't even exist at all.
The command used for linking is this one:
gcc "-LD:\Programme\SDL\lib" -o test.exe test.o -lsdl
After two hours of trying to get a library link to work, I'm pretty confused and have no idea what I'm doing wrong. Help would be appreciated.
It looks like you are building a Windows GUI application, which requires a WinMain, while your code only provides a main function which would be for console applications.
So if this is supposed to be a console application, you must adjust your linker settings accordingly, or you must declare a WinMain.
I am working on a project which requires me to download and use this. Inside the downloaded folder, when extracted I am presented with three things:
A folder called "include"
A folder called "src"
A file called "Makefile"
After some research, I found out that I have to navigate to the directory which contains these files, and just type in the command make.
It seemed to install the library in my system. So I tried a sample bit of code which should use the library:
csp_conn_t * conn;
csp_packet_t * packet;
csp_socket_t * socket = csp_socket(0);
csp_bind(socket, PORT_4);
csp_listen(socket, MAX_CONNS_IN_Q);
while(1) {
conn = csp_accept(socket, TIMEOUT_MAX);
packet = csp_read(conn, TIMEOUT_NONE);
printf(ā%S\r\nā, packet->data);
csp_buffer_free(packet);
csp_close(conn);
}
That's all that was given for the sample server end of the code. So I decided to add these to the top:
#include <csp.h>
#include <csp_buffer.h>
#include <csp_config.h>
#include <csp_endian.h>
#include <csp_interface.h>
#include <csp_platorm.h>
Thinking I was on the right track, I tried to compile the code with gcc, but I was given this error:
csptest_server.c:1: fatal error: csp.h: No such file or directory
compilation terminated.
I thought I may not have installed the library correctly after all, but to make sure, I found out I could check by running this command, and getting this result:
find /usr -iname csp.h
/usr/src/linux-headers-2.6.35-28-generic/include/config/snd/sb16/csp.h
/usr/src/linux-headers-2.6.35-22-generic/include/config/snd/sb16/csp.h
So it seems like the csp.h is installed, maybe I am referencing it incorrectly in the header include line? Any insight? Thanks a lot.
The make command is probably only building the library, but not installing it. You could try sudo make install. This is the "common" method, but I recommend you to check the library's documentation, if any.
The sudo command is only necessary if you have no permissions to write the system's include and library directories, which may be your case.
Another possibility (instead of installing the library) is telling GCC the location of the library's source code and generated binaries (by means of the -I and -L options of the gcc command.
That Makefile will not install anything, just translate the source into a binary format.
The csp.h in the Linux kernel has nothing to do with your project, it's just a naming collision, likely to happen with three letter names.
In your case, I would presume you need to add the include directory to the compilation flags for your server, like gcc -I/path/to/csp/include/csp csptest_server.c.
(Next, you'll run into linker errors because you'll also want to specify -L/path/to/csp -lcsp so that the linker can find the binary code to link to.)
I am currently learning ffmpeg tutorial of Martin Bohme Tutorial Here
and I want to compile an ffmpeg sample program using Code Block IDE but, it can't
#include <stdio.h>
#include <stdlib.h>
#include "libavcodec/avcodec.h"
#include "libavformat/avformat.h"
int main(int argc, char *argv[])
{
av_register_all();
return 0;
}
Please help me. How to compile it. I am using Linux (Ubuntu)
You have to tell the compiler where the header and library files are. This is done by the -I flag to tell which directories contain header files, and -L to tell which directories contains libraries. You will also need -l to tell which libraries to link with.
The flags can be used like this:
$ g++ -I/path/to/headers myprogram.cpp -L/path/to/libraries -lthelibrary
A note about libraries: On Linux (and UNIX systems) they are files with names that start with "lib" and end with the extension ".a" or ".so". When specifying the library with the -l flag you do not write those. So for a library file "libfoo.a", you only use -lfoo to link with it.
For more information about the options of gcc and g++, see http://gcc.gnu.org/onlinedocs/gcc/Invoking-GCC.html.
Edit: For an IDE like Code::Blocks there most likely is some project setting where you can add include and library directories and link libraries. Check the "Project" menu for a "Settings" or "Properties" alternative.
Edit2: See for example this FAQ where to find linker settings in Code::Blocks, the pre-processor settings should be close by.
you can try following command to compile in Linux.
gss <program-name.c>
For IDE like eclipse follow FFMPEG - Eclipse Setup Guide[Linux] official