I am new to C and GCC. I am following Tensorflow in C and I have build it successfully.
For reference, below is my GCC command
gcc.exe -Iinclude -Llib test.c -ltensorflow -o test.exe
However, when I run the exe, I am getting an error saying
tensorflow.dll is missing
and if I copy the tensorflow.dll on the same location as the test.exe it works. Is it possible to make this exe independent of the library? In other words, I want to share only the exe with others and not the library.
Related
I wrote a program that is using OpenSSL and I'm trying to compile it to executable for inwdows.
The command I'm using to compile is:
gcc -g -Ifolder1/include -Iopenssl/include -Ifolder2 -c folder1/lib/functions.c -o folder1/lib/functions.o
gcc -g -Ifolder1/include -Iopenssl/include -Ifolder2 -o myprog.exe main.o folder1/lib/myfiles.o folder1/lib/plus.o folder1/lib/functions.o -Lopenssl/windows/static -lcrypto
This works for linux but for windows i get
c:/mingw/bin/../lib/gcc/mingw32/6.3.0/../../../../mingw32/bin/ld.exe: cannot find -lcrypto
Any idea what is the corresponding flag for -lcrypto for linux?
The problem was that in path openssl/windows/static i had a library with the suffix *.lib and seems like gcc doesnt recongnize it as a library.
resolved when i change it to *.a suffix
I just started learning assembly, but when i tried to compile the code i just get an error.
I can make the object file with nasm -f win64 main.asm -o main.o but when i try to use ld -o main main.o or gcc -o main main.o i just get an error saying main.o: file not recognized: file format not recognized. I tried to use wsl and there ld worked fine but I don't want to use that whenever I need to compile.
I am running windows 10 64 bit.
It turned out that the toolchain I was using was 32-bit and only managed to link 32-bit object files while my object file was 64-bit. This caued my error and when I updated to a 64-bit toolchain it worked.
I am trying to compile a multi threaded application to WebAssembly. The application uses OpenMP for multithreading.
To compile I am using the Emscripten framework.
I have already downloaded the source files for OpenMP and compiled it for my host machine using make. With the following command I can get it to link with a simple demo application on my machine:
g++ -Wall -Werror -pedantic main.o -o main.x /$PATH_TO_OPENMP/build/runtime/src/libgomp.a -pthread -lstdc++ -Wl,--no-as-needed -ldl
I then tried to compile OpenMP to the llvm bytecode format used by Emscripten. To do so I tried to run 'emmake make', so that the emscripten framework executes the OpenMP makefiles with a suitable compiler. As emscripten does not like shared object files I compiled it to static library .a files.
This works and actually gives me object files to which I can link.
I then wanted to link my demo application with the following command
em++ -Wall -Werror -pedantic main.o -o main.html /home/main/data/Programming/openMP/openmp_web/build/runtime/src/libgomp.a -pthread -lstdc++ -Wl,--no-as-needed -ldl
But I get these warnings, that it couldn't link to OpenMP files:
shared:WARNING: object /tmp/emscripten_temp_ONa0eU_archive_contents/kmp_atomic.cpp.o is not a valid object file for emscripten, cannot link
.
.
shared:WARNING: object /tmp/emscripten_temp_ONa0eU_archive_contents/kmp_str.cpp.o is not a valid object file for emscripten, cannot link
shared:WARNING: object /tmp/emscripten_temp_ONa0eU_archive_contents
So I figured I must have compiled OpenMP with the wrong compiler. I then tried to change the compiler when building the library by using the following commands:
cmake -DCMAKE_C_COMPILER=emcc -DCMAKE_CXX_COMPILER=em++ -DLIBOMP_LIB_TYPE=normal -DLIBOMP_ENABLE_SHARED=OFF -DCMAKE_BUILD_TYPE=Release -DLIBOMP_ARCH=x86_64 OPENMP_STANDALONE_BUILD=1 ..
emmake make
But this just gives strange errors on some missing system variables
/home/main/data/Programming/openMP/openmp_web/runtime/src/kmp_platform.h:82:2: error: Unknown OS
/home/main/data/Programming/openMP/openmp_web/runtime/src/kmp_platform.h:203:2: error: Unknown or unsupported architecture
In file included from /home/main/data/Programming/openMP/openmp_web/runtime/src/kmp_alloc.cpp:13:
In file included from /home/main/data/Programming/openMP/openmp_web/runtime/src/kmp.h:77:
/home/main/data/Programming/openMP/openmp_web/runtime/src/kmp_os.h:171:2: error: "Can't determine size_t printf format specifier."
Does anyone have an idea on what I could do differently?
I'm seeing:
ld: in objs/AttributeValueTest.o, can't link with a main executable for architecture x86_64
When building a very simple program which has only 1 .h and 1 .cpp file.
The compile lines are:
g++ -g -I./ -I/usr/local/include -o objs/AttributeValueTest.o tp_datastruct/tests/AttributeValueTest.cpp -L/usr/local/lib -lavrocpp -lcppunit -lm
g++ -g -I./ -I/usr/local/include -o AttributeValueTest objs/AttributeValueTest.o -L/usr/local/lib -lavrocpp -lcppunit -lm
I tried to specify -arch x86_64, -arch i386 and -m32, but nothing worked (I got other errors, it was complaining that libcppunit was not in the right format).
Any idea/pointer/suggestion?
Thanks!
Very strange. I did some digging around, and saw somewhere that AttributeValueTest.o might be an executable already. I did a "file" on that AttributeValueTest.o, and sure enough, it is a ready-to-go executable. I modified my makefile to rename that .o into AttributeValueTest, and I can happily run it. Also, the executable comes with a ".dSYM" directory, which I can remove without any problem... I don't understand what is going on, but I can run my executable now...
You forgot to specify -c option to the g++ to compile a source code into object file. So it is getting compiled and linked into executable file. Then you are trying to link executable into executable, which fails. From the gcc's manual page:
-c Compile or assemble the source files, but do not link. The
linking stage simply is not done. The
ultimate output is in the form of an
object file for each source file.
By default, the object file name for a source file is made by
r> eplacing the suffix .c, .i, .s, etc.,
with .o. Unrecognized input files, not
requiring compilation or assembly, are
ignored.
I'm currently trying to compile a dynamically linked library (for a plugin system) using Windows and MinGW.
I compile each objects using this command line :
mingw-g++ -fPIC test.cpp
And the library using this line:
mingw-g++ -rdynamic -shared -Wl,-soname,test.so.1 -o test.so test.o
It doesn't work at all (using GCC with Linux, a similar line works though) : fPIC and rdynamic are ignored for some reason.
And while trying to make the library, it fails because the compiler try to link it with objects that are supposed to be resolved as I dynamically link it with the main binary.
So how do you compile this using MinGW?
Thanks :) !
-fPIC and -rdynamic are ignored because they are unused for Windows.
Also, .so is not the correct output extension for libraries on Windows.
To make a shared library for/on windows with GCC:
mingw-g++ -c file.cpp -o file.o
mingw-g++ -shared -Wl,--out-implib,libfile.a -o file.dll file.o
No more, no less.
And, documentation is always lovely to have: http://www.mingw.org/wiki/sampleDLL