I am trying to "make" a program and yet face these errors; I used make -lm and even did #include but still I face the same problem. I tried installing the application on both Ubuntu and Debian just to make sure I remove doubts on corrupted libraries.Still no success !
nat_src_endpoint_ip.o: In function `__new':
/root/softwares/sweetspot-0.0.20/src/nat_src_endpoint_ip.c:95: undefined reference to `ceilf'
nat_src_endpoint_tcp.o: In function `__create':
/root/softwares/sweetspot-0.0.20/src/nat_src_endpoint_tcp.c:58: undefined reference to `ceilf'
nat_src_endpoint_udp.o: In function `__create':
/root/softwares/sweetspot-0.0.20/src/nat_src_endpoint_udp.c:59: undefined reference to `ceilf'
nat_src_endpoint_icmp.o: In function `__create':
/root/softwares/sweetspot-0.0.20/src/nat_src_endpoint_icmp.c:48: undefined reference to `ceilf'
collect2: ld returned 1 exit status
make[1]: *** [sweetspot] Error 1
make[1]: Leaving directory `/root/softwares/sweetspot-0.0.20/src'
make: *** [all] Error 2
You should link with the math library. In Gcc this means that you should add -lm to the linking command line (if you only use one command line it means that this command line is both for compiling and linking).
Related
Under Linux(Ubuntu) I'm writing a CMakeLists.txt with CLion to compile my project which is a little game written in C. How do I fix these errors?
Here's a link to the entire source code.
Any help will be greatly appreciated
I have tried to rewrite my .h files. It was primarily an issue about linking SDL and SDL_images.
I have tried to compile the main with gcc main.c -o main -lSDL -lSDL_image.
Here's the CMakeLists.txt
cmake_minimum_required(VERSION 3.7)
project(SOKOBAN)
set(CMAKE_C_STANDARD 99)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -lmingw32")
set(CMAKE_EXE_LINKER_FLAGS "-static-libgcc -static-libstdc++")
include_directories(${PROJECT_SOURCE_DIR}/include)
link_directories(${PROJECT_SOURCE_DIR}/lib)
find_package(SDL REQUIRED)
find_package(SDL)
find_package(SDL_image)
set(SOURCE_FILES main.c jeu.c jeu.h editeur.c editeur.h
fichiers.c fichiers.h Constantes.h hsokoban.h)
add_executable(SOKOBANR ${SOURCE_FILES})
target_link_libraries(SOKOBANR SDL_image SDL)
The error is:
[ 20%] Linking C executable SOKOBANR
CMakeFiles/SOKOBANR.dir/jeu.c.o: In function `jouer':
/home/mahamad/github/SOKOBAN/SOKOBAN/jeu.c:12: multiple definition of `jouer'
CMakeFiles/SOKOBANR.dir/main.c.o:/home/mahamad/github/SOKOBAN/SOKOBAN/jeu.c:12: first defined here
/usr/bin/ld: skipping incompatible /home/mahamad/github/SOKOBAN/SOKOBAN/lib/libSDL.a when searching for -lSDL
CMakeFiles/SOKOBANR.dir/main.c.o: In function `jouer':
/home/mahamad/github/SOKOBAN/SOKOBAN/jeu.c:72: undefined reference to `deplacerJoueur'
/home/mahamad/github/SOKOBAN/SOKOBAN/jeu.c:76: undefined reference to `deplacerJoueur'
/home/mahamad/github/SOKOBAN/SOKOBAN/jeu.c:80: undefined reference to `deplacerJoueur'
/home/mahamad/github/SOKOBAN/SOKOBAN/jeu.c:84: undefined reference to `deplacerJoueur'
CMakeFiles/SOKOBANR.dir/jeu.c.o: In function `jouer':
/home/mahamad/github/SOKOBAN/SOKOBAN/jeu.c:72: undefined reference to `deplacerJoueur'
CMakeFiles/SOKOBANR.dir/jeu.c.o:/home/mahamad/github/SOKOBAN/SOKOBAN/jeu.c:76: more undefined references to `deplacerJoueur' follow
CMakeFiles/SOKOBANR.dir/fichiers.c.o: In function `sauvegarderNiveau':
/home/mahamad/github/SOKOBAN/SOKOBAN/fichiers.c:67: undefined reference to `fprint'
collect2: error: ld returned 1 exit status
CMakeFiles/SOKOBANR.dir/build.make:128: recipe for target 'SOKOBANR' failed
make[3]: *** [SOKOBANR] Error 1
CMakeFiles/Makefile2:72: recipe for target 'CMakeFiles/SOKOBANR.dir/all' failed
make[2]: *** [CMakeFiles/SOKOBANR.dir/all] Error 2
CMakeFiles/Makefile2:84: recipe for target 'CMakeFiles/SOKOBANR.dir/rule' failed
make[1]: *** [CMakeFiles/SOKOBANR.dir/rule] Error 2
Makefile:118: recipe for target 'SOKOBANR' failed
make: *** [SOKOBANR] Error 2```
If you get such errors you need to look into each of them:
CMakeFiles/SOKOBANR.dir/jeu.c.o: In function `jouer':
/home/mahamad/github/SOKOBAN/SOKOBAN/jeu.c:12: multiple definition of `jouer'
CMakeFiles/SOKOBANR.dir/main.c.o:/home/mahamad/github/SOKOBAN/SOKOBAN/jeu.c:12: first defined here
The linker thinks that you have (at least) two definitions of jouer. Since both referenced locations are the same I assume that you 1. include "jeu.c" instead of "jeu.h" in your "main.c", and 2. link both "main.o" and "jeu.o".
/usr/bin/ld: skipping incompatible /home/mahamad/github/SOKOBAN/SOKOBAN/lib/libSDL.a when searching for -lSDL
The library "libSDL.a" you provide is not compatible to the target system. Your target system seems to be Linux.
For which system is the library?
Did you compile it yourself or did you download it?
CMakeFiles/SOKOBANR.dir/main.c.o: In function `jouer':
/home/mahamad/github/SOKOBAN/SOKOBAN/jeu.c:72: undefined reference to `deplacerJoueur'
/home/mahamad/github/SOKOBAN/SOKOBAN/jeu.c:76: undefined reference to `deplacerJoueur'
/home/mahamad/github/SOKOBAN/SOKOBAN/jeu.c:80: undefined reference to `deplacerJoueur'
/home/mahamad/github/SOKOBAN/SOKOBAN/jeu.c:84: undefined reference to `deplacerJoueur'
CMakeFiles/SOKOBANR.dir/jeu.c.o: In function `jouer':
/home/mahamad/github/SOKOBAN/SOKOBAN/jeu.c:72: undefined reference to `deplacerJoueur'
CMakeFiles/SOKOBANR.dir/jeu.c.o:/home/mahamad/github/SOKOBAN/SOKOBAN/jeu.c:76: more undefined references to `deplacerJoueur' follow
There are references (calls) of deplacerJoueur but you don't define it. Or the source file with the definition (implementation) is not added to the list of modules.
CMakeFiles/SOKOBANR.dir/fichiers.c.o: In function `sauvegarderNiveau':
/home/mahamad/github/SOKOBAN/SOKOBAN/fichiers.c:67: undefined reference to `fprint'
This is clearly a typo. You mean fprintf() with a trailing 'f' for sure.
collect2: error: ld returned 1 exit status
Because of all the errors the linker is not successful, and it tells you.
CMakeFiles/SOKOBANR.dir/build.make:128: recipe for target 'SOKOBANR' failed
Because of all the errors the build is not successful, and it tells you.
/tmp/ccfg3L9u.o: In function `main':
Allgo-API-Test.c:(.text+0x968): undefined reference to `mport_get_sub_metadata_entries'
Allgo-API-Test.c:(.text+0xb24): undefined reference to `mport_set_play_scope'
collect2: error: ld returned 1 exit status
Makefile:86: recipe for target 'bin/MediaPort.elf' failed
make: *** [bin/MediaPort.elf] Error 1
I think you miss to link additional library while compiling file Allgo-API-Test.c
Before compiling this file you should have library which contain definition of mport_get_sub_metadata_entries and mport_set_play_scope. Once you get that library you can use below command to compile.
g++ Allgo-API-Test.c -l(your library) [-L(path to your library)]
I'm trying to set up the code from
http://www.openglsuperbible.com/example-code/
with command:
$ cmake -G "Unix Makefiles" ; make clean ; make all
I've installed the following packages in order to prepare the system:
xrandr libxrandr x11-xserver-utils libxrandr-dev libglfw2 libglfw-dev xorg-dev libx11-dev libgl-dev libglu-dev libgl1-mesa-dev freeglut3 freeglut3-dev mesa-common-dev freeglut3-dev build-essential libx11-dev libx11-*
I may have missed some of the packages I've installed in this list, I apologize.
Then I've modified the CMakeList.txt in order to add to the linking phase the following things:
glfw GL rt glut X11 dl Xrandr Xext GLEW GLU
Then I try to compile, but it fails at the linking phase:
/opt/sb6code/src/xraw/xraw.c: In function ‘CreateWindow’:
/opt/sb6code/src/xraw/xraw.c:106:14: warning: assignment makes pointer from integer without a cast [enabled by default]
Linking C executable bin/xraw
CMakeFiles/xraw.dir/src/xraw/xraw.c.o:xraw.c:function CreateWindow: error: undefined reference to 'XOpenDisplay'
CMakeFiles/xraw.dir/src/xraw/xraw.c.o:xraw.c:function CreateWindow: error: undefined reference to 'XCloseDisplay'
CMakeFiles/xraw.dir/src/xraw/xraw.c.o:xraw.c:function CreateWindow: error: undefined reference to 'XCreateColormap'
CMakeFiles/xraw.dir/src/xraw/xraw.c.o:xraw.c:function CreateWindow: error: undefined reference to 'XCreateWindow'
CMakeFiles/xraw.dir/src/xraw/xraw.c.o:xraw.c:function CreateWindow: error: undefined reference to 'XMapWindow'
CMakeFiles/xraw.dir/src/xraw/xraw.c.o:xraw.c:function CreateWindow: error: undefined reference to 'glXCreateContextAttribsARB'
CMakeFiles/xraw.dir/src/xraw/xraw.c.o:xraw.c:function Cleanup: error: undefined reference to 'XDestroyWindow'
CMakeFiles/xraw.dir/src/xraw/xraw.c.o:xraw.c:function Cleanup: error: undefined reference to 'XCloseDisplay'
CMakeFiles/xraw.dir/src/xraw/xraw.c.o:xraw.c:function main: error: undefined reference to 'XNextEvent'
CMakeFiles/xraw.dir/src/xraw/xraw.c.o:xraw.c:function main: error: undefined reference to 'XGetWindowAttributes'
collect2: error: ld returned 1 exit status
make[2]: *** [bin/xraw] Errore 1
make[1]: *** [CMakeFiles/xraw.dir/all] Errore 2
make: *** [all] Errore 2
Now, I've tried to search the web and even here on SO.com for solutions, but they keep telling me to link the libraries I've already added to the linking phase.. so I can't seem to make any more progress.
Do you happen to have some knowledge or hint that could help me?
Ok, stimulated by answers I've gone into CMakeFiles directory and looked for the configuration file that manages the compilation. I've found out that for some reasons it did miss some of the flags stated into the CMakeLists despite of my update.
So now the compilation line looks like:
/usr/bin/cc CMakeFiles/xraw.dir/src/xraw/xraw.c.o -o bin/xraw -L/opt/sb6code/lib -rdynamic -lGL -lglut -lGLU -lm -lX11 -ldl -lGLEW -lXrandr -lXext -lrt -lglfw -Wl,-rpath,/opt/sb6code/lib
And the errors have reduced to :
CMakeFiles/xraw.dir/src/xraw/xraw.c.o:xraw.c:function CreateWindow: error: undefined reference to 'glXCreateContextAttribsARB'
collect2: error: ld returned 1 exit status
make[2]: *** [bin/xraw] Errore 1
make[1]: *** [CMakeFiles/xraw.dir/all] Errore 2
make: *** [all] Errore 2
Other hints? :)
Side Note:
I've also installed CUDA libraries and under path
/usr/lib/nvidia-304/
I happen to have
alt_ld.so.conf libnvidia-ml.so.1
bin/ libnvidia-ml.so.304.88
ld.so.conf libnvidia-opencl.so.1
libcuda.so libnvidia-opencl.so.304.88
libcuda.so.1 libnvidia-tls.so.304.88
libcuda.so.304.88 libnvidia-wfb.so.1
libGL.so libnvidia-wfb.so.304.88
libGL.so.1 libOpenCL.so
libGL.so.304.88 libOpenCL.so.1
libnvcuvid.so libOpenCL.so.1.0
libnvcuvid.so.1 libOpenCL.so.1.0.0
libnvcuvid.so.304.88 libXvMCNVIDIA_dynamic.so.1
libnvidia-cfg.so libXvMCNVIDIA.so
libnvidia-cfg.so.1 libXvMCNVIDIA.so.1
libnvidia-cfg.so.304.88 libXvMCNVIDIA.so.304.88
libnvidia-compiler.so tls/
libnvidia-compiler.so.1 vdpau/
libnvidia-compiler.so.304.88 xorg/
libnvidia-glcore.so.304.88 XvMCConfig
libnvidia-ml.so
Which I would like to use since I'm not sure that my intel graphic card supports OpenGl 4.* which I shall use with the book, while the nvidia one supports 4.2.
I really can't find any good how to on the matter, the Book conveniently avoids to give installation instructions.
Temporary Solution:
I've found out that this is the only source file that does not work. Removing its files and CMakeList.txt configuration seems to be wise until someone finds out another solution.
Also, i had to use optirun to run the executables, in case other people with bumblebee/nvidia are wondering why their programs do not work.
You probably link the libraries in wrong order; all these symbols are defined in libX11.a; you should want to see what is the actual linking command line fed to GCC, and post it here.
Update now it means that you are statically trying to link against an API function that is not available in your libs (it is an optional extension and should be queried dynamically).
I added a third party library to my code and is getting errors like this when running make. Please help me understand this error.
(.text+0x9b4): undefined reference to `snd_strerror'
/home/bet/Tent/tun/app/Common/hl/lib/libGHAL.a(gfxhal.o): In function `GFX_create_region':
/home/bet/Tent/tun/app/Common/hl/src/GHAL/gfxhal.c:1141: undefined reference to `my_key_handler'
/home/bet/Tent/tun/app/Common/hal/src/GHAL/gfxhal.c:1141: undefined reference to `create_window'
collect2: ld returned 1 exit status
make[2]: *** [all] Error 1
make[2]: Leaving directory `/home/bet/Tent/tun/app/Common/c_app'
make[1]: *** [ctv_all] Error 2
make[1]: Leaving directory `/home/bet/Tent/tun/app/Common'
Those are Linking errors, which tell you the linker cannot find definitions for the library you are using.
You will have to link the library to your project.
gcc <your files for compilation> -lLibName
Read this for better understanding.
I still get the error even if
readline library is installed and
-lreadline is added to gcc compiling command.
The root cause of my issue is the order of the libraries/code: -lreadline (and other libraries) should be put right before -o options.
I am installing cminpack 1.1.2 on a clean install of Ubuntu 10.10.
When running sudo make in the cminpack folder, the folloing error occurs at 52%:
[ 52%] Building C object examples/CMakeFiles/genf77tests.dir/genf77tests.c.o
/usr/lib/cminpack-1.1.2/examples/genf77tests.c: In function ‘main’:
/usr/lib/cminpack-1.1.2/examples/genf77tests.c:44: warning: assignment makes pointer from integer without a cast
/usr/lib/cminpack-1.1.2/examples/genf77tests.c:86: warning: comparison between pointer and integer
Linking C executable genf77tests
CMakeFiles/genf77tests.dir/genf77tests.c.o: In function `main':
genf77tests.c:(.text+0xb5): undefined reference to `strnstr'
genf77tests.c:(.text+0x2a9): undefined reference to `strnstr'
collect2: ld returned 1 exit status
make[2]: *** [examples/genf77tests] Error 1
make[1]: *** [examples/CMakeFiles/genf77tests.dir/all] Error 2
make: *** [all] Error 2
I have looked inside genf77tests.c, and #include <string.h> is present, so I don't see why there is a problem finding strnstr.
Is there anything I can do to fix this issue?
strnstr is a non-standard function. Specifically, it is not included in Glibc. Whoever wrote genf77test.c did not test it on Linux/glibc...
strnstr is not standard C; as far as I can see, it's provided on the BSD UNIX family.
Still, if the only problem in your compilation is that one you can provide its prototype1 and add to the files to be compiled one that contains its implementation (for example this one).
Actually, you may not even need it: if the compilation gets to the linking stage and fails just there, you can solve throwing in just the implementation of strnstr.