Problem with linking libraries at Optix 9.0

Gaming and Visualization Technologies Visualization OptiX
1

Hello,

I’am trying to build a hello world project with optix 9.0. However I am finding a difficulty to use.

(conan-env) aminated@aminated-HP-ZBook-Fury-17-3-inch-G8:~/Downloads/doc-optix/hello$ ./build.sh

======== Input profiles ========
Profile host:
[settings]
arch=x86_64
build_type=Release
compiler=gcc
compiler.cppstd=gnu17
compiler.libcxx=libstdc++11
compiler.version=13
os=Linux
[options]
boost/:without_locale=True
boost/:without_stacktrace=True

Profile build:
[settings]
arch=x86_64
build_type=Release
compiler=gcc
compiler.cppstd=gnu17
compiler.libcxx=libstdc++11
compiler.version=13
os=Linux

======== Computing dependency graph ========
Graph root
conanfile.txt: /home/aminated/Downloads/doc-optix/hello/conanfile.txt

======== Computing necessary packages ========

======== Installing packages ========

======== Finalizing install (deploy, generators) ========
conanfile.txt: Writing generators to /home/aminated/Downloads/doc-optix/hello/build/Release/generators
conanfile.txt: Generator ‘CMakeDeps’ calling ‘generate()’
conanfile.txt: Generator ‘CMakeToolchain’ calling ‘generate()’
conanfile.txt: CMakeToolchain generated: conan_toolchain.cmake
conanfile.txt: CMakeToolchain: Preset ‘conan-release’ added to CMakePresets.json.
(cmake>=3.23) cmake --preset conan-release
(cmake<3.23) cmake -G “Unix Makefiles” -DCMAKE_TOOLCHAIN_FILE=<output_folder>/generators/conan_toolchain.cmake -DCMAKE_POLICY_DEFAULT_CMP0091=NEW -DCMAKE_BUILD_TYPE=Release
conanfile.txt: CMakeToolchain generated: /home/aminated/Downloads/doc-optix/hello/build/Release/generators/CMakePresets.json
conanfile.txt: CMakeToolchain generated: /home/aminated/Downloads/doc-optix/hello/CMakeUserPresets.json
conanfile.txt: Generating aggregated env files
conanfile.txt: Generated aggregated env files: [‘conanbuild.sh’, ‘conanrun.sh’]
Install finished successfully
– Using Conan toolchain: /home/aminated/Downloads/doc-optix/hello/build/Release/generators/conan_toolchain.cmake
– Conan toolchain: Defining architecture flag: -m64
– Conan toolchain: C++ Standard 17 with extensions ON
– The CXX compiler identification is GNU 13.3.0
– The CUDA compiler identification is NVIDIA 12.9.86
– Detecting CXX compiler ABI info
– Detecting CXX compiler ABI info - done
– Check for working CXX compiler: /usr/bin/c++ - skipped
– Detecting CXX compile features
– Detecting CXX compile features - done
– Detecting CUDA compiler ABI info
– Detecting CUDA compiler ABI info - done
– Check for working CUDA compiler: /usr/local/cuda-12.9/bin/nvcc - skipped
– Detecting CUDA compile features
– Detecting CUDA compile features - done
– Using OptiX from: /home/aminated/Downloads/optix
CMake Error at CMakeLists.txt:25 (find_library):
Could not find OPTIX_LIB using the following names: optix

-- Configuring incomplete, errors occurred!
ninja: error: loading ‘build.ninja’: No such file or directory
(conan-env) aminated@aminated-HP-ZBook-Fury-17-3-inch-G8:~/Downloads/doc-optix/hello$ ./build.sh

======== Input profiles ========
Profile host:
[settings]
arch=x86_64
build_type=Release
compiler=gcc
compiler.cppstd=gnu17
compiler.libcxx=libstdc++11
compiler.version=13
os=Linux
[options]
boost/:without_locale=True
boost/:without_stacktrace=True

Profile build:
[settings]
arch=x86_64
build_type=Release
compiler=gcc
compiler.cppstd=gnu17
compiler.libcxx=libstdc++11
compiler.version=13
os=Linux

======== Computing dependency graph ========
Graph root
conanfile.txt: /home/aminated/Downloads/doc-optix/hello/conanfile.txt

======== Computing necessary packages ========

======== Installing packages ========

======== Finalizing install (deploy, generators) ========
conanfile.txt: Writing generators to /home/aminated/Downloads/doc-optix/hello/build/Release/generators
conanfile.txt: Generator ‘CMakeDeps’ calling ‘generate()’
conanfile.txt: Generator ‘CMakeToolchain’ calling ‘generate()’
conanfile.txt: CMakeToolchain generated: conan_toolchain.cmake
conanfile.txt: CMakeToolchain: Preset ‘conan-release’ added to CMakePresets.json.
(cmake>=3.23) cmake --preset conan-release
(cmake<3.23) cmake -G “Unix Makefiles” -DCMAKE_TOOLCHAIN_FILE=<output_folder>/generators/conan_toolchain.cmake -DCMAKE_POLICY_DEFAULT_CMP0091=NEW -DCMAKE_BUILD_TYPE=Release
conanfile.txt: CMakeToolchain generated: /home/aminated/Downloads/doc-optix/hello/build/Release/generators/CMakePresets.json
conanfile.txt: CMakeToolchain generated: /home/aminated/Downloads/doc-optix/hello/CMakeUserPresets.json
conanfile.txt: Generating aggregated env files
conanfile.txt: Generated aggregated env files: [‘conanbuild.sh’, ‘conanrun.sh’]
Install finished successfully
– Using Conan toolchain: /home/aminated/Downloads/doc-optix/hello/build/Release/generators/conan_toolchain.cmake
– Conan toolchain: Defining architecture flag: -m64
– Conan toolchain: C++ Standard 17 with extensions ON
– The CXX compiler identification is GNU 13.3.0
– The CUDA compiler identification is NVIDIA 12.9.86
– Detecting CXX compiler ABI info
– Detecting CXX compiler ABI info - done
– Check for working CXX compiler: /usr/bin/c++ - skipped
– Detecting CXX compile features
– Detecting CXX compile features - done
– Detecting CUDA compiler ABI info
– Detecting CUDA compiler ABI info - done
– Check for working CUDA compiler: /usr/local/cuda-12.9/bin/nvcc - skipped
– Detecting CUDA compile features
– Detecting CUDA compile features - done
– Using OptiX from: /home/aminated/Downloads/optix
– Found CUDAToolkit: /usr/local/cuda-12.9/targets/x86_64-linux/include (found version “12.9.86”)
– Performing Test CMAKE_HAVE_LIBC_PTHREAD
– Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
– Found Threads: TRUE
– Configuring done (2.0s)
– Generating done (0.0s)
– Build files have been written to: /home/aminated/Downloads/doc-optix/hello/build
[0/2] Re-checking globbed directories…
[2/2] Linking CXX executable hello
FAILED: hello
: && /usr/bin/c++ -m64 -O3 -DNDEBUG -m64 CMakeFiles/hello.dir/src/hello.cpp.o -o hello -Wl,-rpath,/usr/local/cuda-12.9/targets/x86_64-linux/lib /usr/local/cuda-12.9/targets/x86_64-linux/lib/libcudart.so && :
/usr/bin/ld: CMakeFiles/hello.dir/src/hello.cpp.o: warning: relocation against g_optixFunctionTable_105' in read-only section .text.startup’
/usr/bin/ld: CMakeFiles/hello.dir/src/hello.cpp.o: in function main': hello.cpp:(.text.startup+0x43): undefined reference to g_optixFunctionTable_105’
/usr/bin/ld: hello.cpp:(.text.startup+0x7c): undefined reference to g_optixFunctionTable_105' /usr/bin/ld: hello.cpp:(.text.startup+0xad): undefined reference to g_optixFunctionTable_105’
/usr/bin/ld: hello.cpp:(.text.startup+0xcc): undefined reference to `g_optixFunctionTable_105’
/usr/bin/ld: warning: creating DT_TEXTREL in a PIE
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
(conan-env) aminated@aminated-HP-ZBook-Fury-17-3-inch-G8:~/Downloads/doc-optix/hello$ echo $LD_LIBRARY_PATH
:/usr/local/cuda-12.9/lib64:/usr/local/cuda-12.9/lib64
(conan-env) aminated@aminated-HP-ZBook-Fury-17-3-inch-G8:~/Downloads/doc-optix/hello$ echo $OPTI
$OPTIND $OPTIX_ROOT
(conan-env) aminated@aminated-HP-ZBook-Fury-17-3-inch-G8:~/Downloads/doc-optix/hello$ echo $OPTIX_ROOT
/home/aminated/Downloads/optix
(conan-env) aminated@aminated-HP-ZBook-Fury-17-3-inch-G8:~/Downloads/doc-optix/hello$ ls $OPTIX_ROOT
build doc environment.yml env.sh include lib64 license_info.txt OptiX_EndUserLicense.pdf OptiX_ThirdParty_Licenses.txt README.md SDK

#include <optix.h>
#include <optix_stubs.h>
#include <iostream>

#define OPTIX_CHECK(call)                                  \
    do {                                                   \
        OptixResult res = call;                            \
        if (res != OPTIX_SUCCESS) {                        \
            std::cerr << "OptiX error: " << res << "\n";   \
            exit(1);                                       \
        }                                                  \
    } while(0)

int main()
{
    std::cout << "Starting OptiX test...\n";

    // Init OptiX (THIS is where your error happens if linking is wrong)
    OPTIX_CHECK(optixInit());

    std::cout << "OptiX initialized successfully!\n";

    // Create context
    OptixDeviceContext context = nullptr;
    OPTIX_CHECK(optixDeviceContextCreate(0, nullptr, &context));

    std::cout << "Device context created!\n";

    optixDeviceContextDestroy(context);

    std::cout << "Done.\n";
    return 0;
}

cmake_minimum_required(VERSION 3.20)
project(optix_shadow LANGUAGES CXX CUDA)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
# -------------------------------------------------------
# OptiX
# -------------------------------------------------------
if(NOT DEFINED ENV{OPTIX_ROOT})
    message(FATAL_ERROR "OPTIX_ROOT not set. Export it before running CMake.")
endif()

set(OPTIX_ROOT $ENV{OPTIX_ROOT})
message(STATUS "Using OptiX from: ${OPTIX_ROOT}")

find_path(OPTIX_INCLUDE_DIR
    optix.h
    HINTS ${OPTIX_ROOT}/include
    REQUIRED
)

# -------------------------------------------------------
# OptiX Library
# -------------------------------------------------------
#find_library(OPTIX_LIB
#    NAMES optix
#    HINTS ${OPTIX_ROOT}/lib64
#    REQUIRED
#)


# -------------------------------------------------------
# CUDA
# -------------------------------------------------------
find_package(CUDAToolkit REQUIRED)
# -------------------------------------------------------
# Sources
# -------------------------------------------------------
file(GLOB_RECURSE SOURCES CONFIGURE_DEPENDS
    src/*.cpp
)
#--------------------------------------------------------
# hello binary
# -------------------------------------------------------
add_executable(hello ${SOURCES})
target_include_directories(hello PRIVATE
    ${TENSORRT_INCLUDE_DIR}
    ${OPTIX_INCLUDE_DIR}
)

target_link_libraries(hello PRIVATE
    CUDA::cudart
#    ${OPTIX_LIB}
)

rm -rf build

conan install . --output-folder=. --build=missing -o boost/*:without_locale=True -o boost/*:without_stacktrace=True

cmake -S . -B build \

-G Ninja \

-DCMAKE_TOOLCHAIN_FILE=build/Release/generators/conan_toolchain.cmake \

-DCMAKE_BUILD_TYPE=Release

cmake --build build

Regards

2

1.) OptiX is a header-only API since SDK version 7.0.0. There is no optix.lib to link against anymore!
Make sure that the development environment setup you’re using is not targeting OptiX versions before 7.0.0. They are not API-compatible.
You seem to have removed the optix.lib dependency inside the provided CMakeLists.txt correctly.

2.) For the g_optixFunctionTableerror, that is most likely because your code is missing two helper includes from the OptiX SDK example code, which load the OptiX API function table and lift their function names into the global namespace. Please read this thread how to solve that: https://forums.developer.nvidia.com/t/undefined-symbol-g-optixfunctiontable-during-execution/274690

3.) Maybe try building the provided OptiX SDK 9.0.0 examples themselves first.
Only if that works, try other examples and make sure they are meant to work with the OptiX SDK version you’re using, like the ones in this sticky post.
The OptiX Advanced Examples contain multiple CMakeLists.txt projects which show how to use OptiX in a standalone application framework outside the OptiX SDK examples build environment.

3

thank you for your response I will check and update this thread