I wish to setup Affectiva SDK 4.0.0 for Linux and hence, have started working on example apps from https://github.com/Affectiva/cpp-sdk-samples
I have Ubunutu 16.04, OpenCV 2.4.11, Boost 1.63, cmake 3.8.1, pre-installed gcc 5.5.0 and manually installed gcc 5.4.0 (because I could not find a proper setup for gcc 5.4.1 as required).
When I try to run below command to compile the code from video-demo folder:
g++ video_analyse.cpp -o video_analyse -std=c++11 -I$HOME/affdex-sdk/include -L$HOME/affdex-sdk/lib -I$HOME/sdk-samples/common -l affdex-native -l boost_program_options `pkg-config opencv --cflags --libs`
The error points to below line of code:
shared_ptr<PlottingImageListener> listenPtr(new PlottingImageListener(csvFileStream, draw_display));
And receive error:
/tmp/ccWtKCG0.o: In function `PlottingImageListener::PlottingImageListener(std::basic_ofstream<char, std::char_traits<char> >&, bool)':
video_analyse.cpp:(.text._ZN21PlottingImageListenerC2ERSt14basic_ofstreamIcSt11char_traitsIcEEb[_ZN21PlottingImageListenerC5ERSt14basic_ofstreamIcSt11char_traitsIcEEb]+0x148): undefined reference to `Visualizer::Visualizer()'
collect2: error: ld returned 1 exit status
The exact same error is received with gcc 5.5.0 as well.
If I comment everything starting from that line of code, then the compilation happens successfully.
Please guide me on this. Either on how to install the exact version of gcc 5.4.1 as expected by the SDK dependency OR anything which I might be missing.
Related
I am trying to link an application that is compiled with clang/libc++ to the v8-devel system library on Fedora. However the latter is compiled with gcc/libstdc++ which leads to a linking error for std::unique_ptr, I think due to inlining.
Is there anything I can change in eiher my application code, or the compiler/linker flags (other than -stdlib) , such that my program can be linked to v8-devel while being still compiled with clang+libcxx?
Below a minimal toy example to reproduce the problem on Fedora (in reality, the only compiler that I have available is a custom clang version with libcxx, so switching to libstdc++ is not an option):
#include <libplatform/libplatform.h>
#include <v8.h>
using namespace v8;
int main(){
std::unique_ptr<Platform> platform = platform::NewDefaultPlatform();
V8::InitializePlatform(platform.get());
}
Then on Fedora we do:
# Install dependencies
yum install -y clang libcxx-devel v8-devel
# Try to compile test program
clang++ test.cpp -std=gnu++17 -stdlib=libc++ -lv8 -lv8_libplatform
Which gives the following linker error:
/usr/bin/ld: /tmp/test-9925a1.o: in function `main':
test.cpp:(.text+0x24): undefined reference to `v8::platform::NewDefaultPlatform(int, v8::platform::IdleTaskSupport, v8::platform::InProcessStackDumping, std::__1::unique_ptr<v8::TracingController, std::__1::default_delete<v8::TracingController> >)'
clang-14: error: linker command failed with exit code 1 (use -v to see invocation)
You can automatically run the steps above using this Dockerfile.
I'm trying to compile with a sysroot for Ubuntu 22.04 from a Ubuntu 20.04 image, and I'm having quite a bit of trouble, getting linker errors like these:
/usr/bin/ld: ../build_rootfs/x86_64_jammy/lib/x86_64-linux-gnu/libc.so.6: undefined reference to `_dl_audit_symbind_alt#GLIBC_PRIVATE'
/usr/bin/ld: ../build_rootfs/x86_64_jammy/lib/x86_64-linux-gnu/libc.so.6: undefined reference to `_dl_audit_preinit#GLIBC_PRIVATE'
/usr/bin/ld: ../build_rootfs/x86_64_jammy/lib/x86_64-linux-gnu/libc.so.6: undefined reference to `_dl_fatal_printf#GLIBC_PRIVATE'
/usr/bin/ld: ../build_rootfs/x86_64_jammy/lib/x86_64-linux-gnu/libc.so.6: undefined reference to `__nptl_change_stack_perm#GLIBC_PRIVATE'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
The exact same invocation works fine from a Ubuntu 22.04, using the exact same compiler and exact same sysroot.
Here's my setup:
// test.cpp
int main(){}
Compile command:
clang++ --sysroot ../build_rootfs/x86_64_jammy test.cpp
Where ../build_rootfs/x86_64_jammy is a sysroot created with multistrap (I can share a minimized multistrap config if it's relevant, but considering the same sysroot works fine from Ubuntu 22.04, the sysroot seems to not be the issue.
Things I have tried:
Using lld--same result
Using clang 14, both from apt.llvm.org and from the binary tarball
Notably, GCC is able to compile it by passing -L/usr/lib/x86_64-linux-gnu/9 -L/usr/lib/x86_64-linux-gnu (yes, even when compiling with --sysroot), but this seems strange as this is linking to libraries on the host system. Adding these flags does let the compilation succeed, but compiling from clang on 22.04 works fine without loading any of the system libraries (allegedly).
I assume this is an issue with glibc verisons, but I can't see how the host glibc version would matter when compiling from a sysroot, and it doesn't seem like any of the linker inputs are actually from the host system, so what's going wrong?
This gist has the verbose logs from clang on focal, gcc on focal, and clang on jammy for reference.
I'm newbee with minGW. I'm trying to compile omniORB 4.2.3 with minGW in order to link the libraries with my applications developed on Dev-CPP 5.11 . I use the same toolchain for both. The gcc version is 4.9.2 (tdm64-1).
I googled everywhere as possible and found the linker option -municode. But the error persists. I tried the wrapper solution too.
Here is the lines of the error :
+ gcc -oomnicpp.exe -mthreads -Wl,--enable-runtime-pseudo-reloc -municode -L../../../../../lib/x86_win32 cexp.o cccp.o config.o alloca.o index.o
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/4.9.2/../../../../x86_64-w64-mingw32/lib/../lib/libmingw32.a(lib64_libmingw32_a-crt0_w.o): In function `wmain':
C:/crossdev/src/mingw-w64-v3-git/mingw-w64-crt/crt/crt0_w.c:23: undefined reference to `wWinMain'
collect2.exe: error: ld returned 1 exit status
Thanks for help.
I have been using gtests for unit testing a personal project. Last week I upgraded to the LTS version of Linux Mint. Unfortunately, after that event, I haven't been able to compile my project due to gtests linking problems.
The following error is being issued:
/usr/bin/x86_64-linux-gnu-ld: build/tests/policies/roundrobin_tests.o: undefined reference to symbol '_ZN7testing4TestC2Ev'
/home/myuser/Documents/googletest-release-1.8.0/googletest/libgtest.so: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
I have generated both libgtest.so and libgtest_main.so through CMake 3.10.2. The gtest version is the release-1.8.0, the same I used to have before.
Those libraries are located in /usr/lib and the corresponding include folder has also been copied to /usr/include. I made sure that this location is in my ld path and that is not the problem.
My compiler is g++ v7.3.0 and the command Im using to compile the testes is:
g++ -std=c++14 -Wall -O3 -Iinclude build/tests/policies/roundrobin_tests.o -lgtest_main -pthread -o bin/policies/roundrobin_tests
I have tried altering the order of the elements in the command, explicitly adding -L/usr/lib and -I/usr/include without luck. A funny fact is that if I take off the -pthread flag, the error is still the same.
The same command was used before and the only difference is the compiler version I am using now as I used g++ 5.4.0 before. Any insights on how to solve this?
edit: Just tested the same process with g++ 5.4.0 and CMake 3.5 and the same problems ocurred.
I read V8 hello world example, and follow the steps in the document to build v8 successfully.
But when I compile the example code, link error occured. Here comes my computer detail and error prompts.
OS Ubuntu 13.10 amd64
GCC (Ubuntu/Linaro 4.8.1-10ubuntu9) 4.8.1
Compile command:
g++ -Iinclude hello_world.cc -o hello_world -Wl,--start-group out/native/obj.target/{tools/gyp/libv8_{base.x64,snapshot},third_party/icu/libicu{uc,i18n,data}}.a -Wl,--end-group -lrt
Error prompts
/usr/bin/ld: /home/leon/Documents/v8/v8/out/native/obj.target/v8_base.x64/src/platform/mutex.o: undefined reference to symbol 'pthread_mutexattr_settype##GLIBC_2.2.5'
/lib/x86_64-linux-gnu/libpthread.so.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
The error suggests that you need to add the pthread library to your link command. Just append -lpthread.
(It's a bit odd that it identifies exactly which library you need, then tells you it refuses to use it because you didn't list it on the command-line...)