I need to retrieve vorbis and vorbisenc libraries to compile a C program. I tried to download vorbis lib sources in http://xiph.org/downloads/ but each time, there are problems for compiling this lib. Do you know where I can download these lib (.h and .so ) ?
I work on MacOSX.
Thanks
EDIT :
Finally, I succeed to install the library by downloading an older version. But now, I encounter another problem in compiling my program with this library :
ld: warning: ignoring file /usr/local/lib/libFLAC.dylib, missing required architecture x86_64 in file /usr/local/lib/libFLAC.dylib (2 slices)
Undefined symbols for architecture x86_64:
"_sf_close", referenced from:
_main in ccucQ4qH.o
"_sf_open", referenced from:
_main in ccucQ4qH.o
"_sf_readf_double", referenced from:
_read_n_samples in ccucQ4qH.o
"_sf_strerror", referenced from:
_main in ccucQ4qH.o
ld: symbol(s) not found for architecture x86_64
Related
This question already has answers here:
What is an undefined reference/unresolved external symbol error and how do I fix it?
(39 answers)
How to use SDL with gcc?
(1 answer)
Closed 3 years ago.
I wrote a simple Chip-8 emulator in C (mostly taking inspiration from this; to be honest, just rewriting it in C). It uses SDL 2.0, which I definitely have installed.
As I tried compiling the files (gcc main.c chip8.c -o chip8), I got this stack of errors:
Undefined symbols for architecture x86_64:
"_SDL_CreateRenderer", referenced from:
_main in main-638d2a.o
"_SDL_CreateTexture", referenced from:
_main in main-638d2a.o
"_SDL_CreateWindow", referenced from:
_main in main-638d2a.o
"_SDL_GetError", referenced from:
_main in main-638d2a.o
"_SDL_Init", referenced from:
_main in main-638d2a.o
"_SDL_PollEvent", referenced from:
_main in main-638d2a.o
"_SDL_RenderClear", referenced from:
_main in main-638d2a.o
"_SDL_RenderCopy", referenced from:
_main in main-638d2a.o
"_SDL_RenderPresent", referenced from:
_main in main-638d2a.o
"_SDL_RenderSetLogicalSize", referenced from:
_main in main-638d2a.o
"_SDL_UpdateTexture", referenced from:
_main in main-638d2a.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
I'm very sure I used the correct #include (#include "SDL2/SDL.h"). This is my project structure:
chip-8
—— main.c
–– chip8.c
–– chip8.h
–– INVADERS (rom file)
Why doesn't the linker work with this? Are any other compiler flags required?
Why doesn't the linker work with this? Are any other compiler flags required?
Yes, you need to tell the linker which libraries to link against, e.g.:
-lSDL2
See How to use SDL with gcc?
I am trying to build a C source file based on Linphone in Mac OS X Sierra but getting the following error.
This is the link for the C source file.
http://www.linphone.org/docs/liblinphone/group__basic__call__tutorials.html
Edited:
I am trying to compile the source code with this command
clang -o tt tt.c -I/Users/softdev/Downloads/linphone-sdk-3.11.1-mac/include/
Error:
Undefined symbols for architecture x86_64
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
I have tried to change the target cpu but didn't work.
My system has XCode 8. Any help regarding this will be appreciated.
Edited: Complete Output
Undefined symbols for architecture x86_64:
"_linphone_call_get_state", referenced from:
_main in tt-ca2045.o
"_linphone_call_ref", referenced from:
_main in tt-ca2045.o
"_linphone_call_unref", referenced from:
_main in tt-ca2045.o
"_linphone_core_destroy", referenced from:
_main in tt-ca2045.o
"_linphone_core_invite", referenced from:
_main in tt-ca2045.o
"_linphone_core_iterate", referenced from:
_main in tt-ca2045.o
"_linphone_core_new", referenced from:
_main in tt-ca2045.o
"_linphone_core_terminate_call", referenced from:
_main in tt-ca2045.o
"_ms_usleep", referenced from:
_main in tt-ca2045.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
I got the sample code to compile using this:
clang -o hello hello.c -Ilinphone-sdk-3/include -Llinphone-sdk-3/lib -llinphone -lmediastreamer_base
Clang's -I parameter points to the where the header (.h) files live
And as for my additions, -L specifies the path for clang to get to where the lib files live. In your case, it might live in -L/Users/softdev/Downloads/linphone-sdk-3.11.1-mac/lib
then -l specifies which dylibs you want to include (strip off the lib prefix and the dylib suffix).
Lastly, you need to add a missing line to the sample code you pointed to. Add:
#include <unistd.h>
after signal.h
I am trying to use the hdf5-format to store data. Problem is, that I fail to link against the library. I have the following code
#include <H5Cpp.h>
int main(void){
H5::H5File file("test_MatrixRoundTrip_Double.h5", H5F_ACC_TRUNC);
}
and compile it using
gcc -std=c++11 -o main main.cpp -I /usr/local/include/ -L /usr/local/lib/ -lhdf5 -lhdf5_hl
This always returns the error
Undefined symbols for architecture x86_64:
"H5::FileAccPropList::DEFAULT", referenced from:
_main in main-c207d1.o
"H5::FileCreatPropList::DEFAULT", referenced from:
_main in main-c207d1.o
"H5::H5File::H5File(char const*, unsigned int, H5::FileCreatPropList const&, H5::FileAccPropList const&)", referenced from:
_main in main-c207d1.o
"H5::H5File::~H5File()", referenced from:
_main in main-c207d1.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
I installed the hdf5 library on OSX using
brew install homebrew/science/hdf5
What am I doing wrong here?
You are including the HDF5 C++ header file, but only linking the HDF5 C library. Add the line: -lhdf5_cpp to link the C++ shared object and use locate libhdf5_cpp to find it's libpath.
I am trying to use the code Nauty and Traces http://pallini.di.uniroma1.it/. But when I complied an example, say nautyex8.c (provided by the package), the following error showed up:
Undefined symbols for architecture x86_64:
"_alloc_error", referenced from:
_main in nautyex8-54d9da.o
"_densenauty", referenced from:
_main in nautyex8-54d9da.o
"_dispatch_graph", referenced from:
_main.options in nautyex8-54d9da.o
"_nauty_check", referenced from:
_main in nautyex8-54d9da.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
I am using Mac OS X Yosemite (10.10.5) and Xcode (version 7.1). I believe that there is no error in the codes because they are widely used so I guess the problem comes from my system settings.
Thank you so much!
I've just opened a pull request to make brew install nauty work on OS X: https://github.com/Homebrew/homebrew-core/pull/48701
Until then, here's how you would build nautyex8.c on OS X, as of Nauty/Traces 2.6r12.
Step 1 is to download the code and build the library:
wget http://pallini.di.uniroma1.it/nauty26r12.tar.gz
tar zxvf nauty26r12.tar.gz
cd nauty26r12
./configure
make
ls -l nauty.a
Step 2 is to compile nautyex8.c and link it against the library you just built:
gcc -O3 nautyex8.c nauty.a
./a.out
You probably forgot to put that "nauty.a" at the end of your compiler command line. If I do that too, I get:
gcc -O3 nautyex8.c
Undefined symbols for architecture x86_64:
"_alloc_error", referenced from:
_main in nautyex8-05f086.o
"_densenauty", referenced from:
_main in nautyex8-05f086.o
"_dispatch_graph", referenced from:
_main.options in nautyex8-05f086.o
"_nauty_check", referenced from:
_main in nautyex8-05f086.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
which exactly matches the symptom you described.
I am trying to learn how to program in C, and I want to be able to import data into my C program from a .hdf file.
I am using a mid 2009 MacBook Pro with Mac OS X lion.
I think I am having problems, because I didn't know where on my system to put all the header files associated with hdd (remember, I'm a bit of a noob). So I just downloaded the hdf5-1.8.9-freebsd-shared folder from the hdd website, and manually dragged all the .h files from the /include subdirectory into the /usr/include directory onto my computer.
When I try to compile my .c program using the normal gcc terminal command, I get an error which is along the lines of (sorry about the formatting but I think the exact error doesn't matter too much anyway):
Undefined symbols for architecture x86_64:
"_H5check_version", referenced from:
_main in cc9FVO6S.o
"_H5Fcreate", referenced from:
_main in cc9FVO6S.o
"_H5Screate_simple", referenced from:
_main in cc9FVO6S.o
"_H5open", referenced from:
_main in cc9FVO6S.o
"_H5T_STD_I32LE_g", referenced from:
_main in cc9FVO6S.o
"_H5Dcreate2", referenced from:
_main in cc9FVO6S.o
"_H5T_NATIVE_INT_g", referenced from:
_main in cc9FVO6S.o
"_H5Dwrite", referenced from:
_main in cc9FVO6S.o
"_H5Dclose", referenced from:
_main in cc9FVO6S.o
"_H5Sclose", referenced from:
_main in cc9FVO6S.o
"_H5Fclose", referenced from:
_main in cc9FVO6S.o
"_H5Fopen", referenced from:
_main in cc9FVO6S.o
"_H5Dopen2", referenced from:
_main in cc9FVO6S.o
"_H5Dread", referenced from:
_main in cc9FVO6S.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status
Though the exact error varies depending on exactly what code I am trying to compile. This was generated when I tried to compile a sample program.
Does anybody have any experience with getting hdf5 to work in C in Mac OS X? I have found it all very confusing.
By the way, I normally use python, and frequently use h5py without trouble.
You have to tell your linker when you are using a library using -l<library-name> and -L<library-dir> for non-standard locations.
If you installed hdf5 in /usr/local/hdf5, you need something like:
gcc -o h5ex_d_rdwr h5ex_d_rdwr.c -I/usr/local/hdf5/include -L/usr/local/hdf5/lib -lhdf5
If you are using the High-Level API, also add -lhdf5_hl.
If you have pkg-config installed and it is aware of your hdf5 installation, you can let it do it for you:
gcc -o h5ex_d_rdwr h5ex_d_rdwr.c `pkg-config hdf5 --cflags --libs`