Package 'clang-8' has no installation candidate, Ubuntu 22.04

[iagupov]

Bug report

• AirSim Version/#commit: 1.8.1
• UE/Unity version: 4.27
• autopilot version: ArduPilot 4.4.1
• OS Version: Ubuntu 22.04.3
• python 3.9.17

What's the issue you encountered?

I follow the instruction: https://microsoft.github.io/AirSim/build_linux/ to install AirSim in Ubuntu
In a section "Build AirSim" I cloned repository and then executed ./setup.sh
This provoke an error: "Package 'clang-8' has no installation candidate"
I did not find any similar issue or any relative information. The full log is shown below. Please help if you have any idea how to fix it. I saw that clang is not supported for Ubuntu 22.04, but maybe there is a way to run it without reinstalling Ubuntu.

Settings

How can the issue be reproduced?

1. Just follow the AirSim installation procedure from https://microsoft.github.io/AirSim/build_linux/

Include full error message in text form

./setup.sh

user@MSK-PC-0726:~/cv_dev/ardupilot/AirSim$ ./setup.sh

• set -e
  +++ dirname ./setup.sh
  ++ cd .
  ++ pwd
• SCRIPT_DIR=/home/user/cv_dev/ardupilot/AirSim
• pushd /home/user/cv_dev/ardupilot/AirSim
• downloadHighPolySuv=true
• MIN_CMAKE_VERSION=3.10.0
  ++ uname
• '[' Linux == Darwin ']'
• DEBUG=false
• [[ 0 -gt 0 ]]
  ++ uname
• '[' Linux == Darwin ']'
• sudo apt-get update
  Hit:1 http://archive.ubuntu.com/ubuntu jammy InRelease
  Hit:2 http://archive.ubuntu.com/ubuntu jammy-updates InRelease
  Hit:3 http://archive.ubuntu.com/ubuntu jammy-security InRelease
  Hit:4 http://archive.ubuntu.com/ubuntu jammy-backports InRelease
  Hit:5 http://archive.canonical.com/ubuntu jammy InRelease
  Reading package lists... Done
• sudo apt-get -y install --no-install-recommends lsb-release rsync software-properties-common wget libvulkan1 vulkan-utils
  Reading package lists... Done
  Building dependency tree... Done
  Reading state information... Done
  Note, selecting 'vulkan-tools' instead of 'vulkan-utils'
  lsb-release is already the newest version (11.1.0ubuntu4).
  wget is already the newest version (1.21.2-2ubuntu1).
  rsync is already the newest version (3.2.7-0ubuntu0.22.04.2).
  software-properties-common is already the newest version (0.99.22.7).
  libvulkan1 is already the newest version (1.3.261.0rc1-1lunarg20.04-1).
  vulkan-tools is already the newest version (1.3.261.0rc2-1lunarg20.04-1).
  The following packages were automatically installed and are no longer required:
  amd64-microcode binutils-arm-linux-gnueabihf cpp-11-arm-linux-gnueabihf cpp-arm-linux-gnueabihf cuda-command-line-tools-11-2 cuda-compiler-11-2 cuda-cudart-11-2 cuda-cudart-dev-11-2
  cuda-cuobjdump-11-2 cuda-cupti-11-2 cuda-cupti-dev-11-2 cuda-cuxxfilt-11-2 cuda-documentation-11-2 cuda-driver-dev-11-2 cuda-gdb-11-2 cuda-libraries-11-2 cuda-libraries-dev-11-2
  cuda-memcheck-11-2 cuda-nsight-11-2 cuda-nsight-compute-11-2 cuda-nsight-systems-11-2 cuda-nvcc-11-2 cuda-nvdisasm-11-2 cuda-nvml-dev-11-2 cuda-nvprof-11-2 cuda-nvprune-11-2 cuda-nvrtc-11-2
  cuda-nvrtc-dev-11-2 cuda-nvtx-11-2 cuda-nvvp-11-2 cuda-samples-11-2 cuda-sanitizer-11-2 cuda-toolkit-11-2 cuda-tools-11-2 cuda-visual-tools-11-2 dctrl-tools dkms
  gcc-11-arm-linux-gnueabihf-base gcc-11-cross-base gcc-12-cross-base intel-microcode iucode-tool libasan6-armhf-cross libatomic1:i386 libatomic1-armhf-cross libc6-armhf-cross
  libc6-dev-armhf-cross libcublas-11-2 libcublas-dev-11-2 libcufft-11-2 libcufft-dev-11-2 libcurand-11-2 libcurand-dev-11-2 libcusolver-11-2 libcusolver-dev-11-2 libcusparse-11-2
  libcusparse-dev-11-2 libdrm-amdgpu1:i386 libdrm-intel1:i386 libdrm-nouveau2:i386 libdrm-radeon1:i386 libdrm2:i386 libegl-mesa0:i386 libegl1:i386 libelf1:i386 libexpat1:i386 libgbm1:i386
  libgcc-11-dev-armhf-cross libgcc-s1-armhf-cross libgdk-pixbuf-xlib-2.0-0 libgdk-pixbuf2.0-0 libgl1:i386 libgl1-mesa-dri:i386 libglapi-mesa:i386 libgles2:i386 libglvnd0:i386 libglx-mesa0:i386
  libglx0:i386 libgomp1-armhf-cross libicu70:i386 libllvm15:i386 libnpp-11-2 libnpp-dev-11-2 libnvidia-cfg1-535 libnvidia-common-535 libnvidia-compute-530:i386 libnvidia-compute-535:i386
  libnvidia-decode-530:i386 libnvidia-decode-535 libnvidia-decode-535:i386 libnvidia-encode-530:i386 libnvidia-encode-535 libnvidia-encode-535:i386 libnvidia-extra-535 libnvidia-fbc1-530:i386
  libnvidia-fbc1-535 libnvidia-fbc1-535:i386 libnvidia-gl-535:i386 libnvjpeg-11-2 libnvjpeg-dev-11-2 libomxil-bellagio-bin libomxil-bellagio0 libopengl0:i386 libpciaccess0:i386
  libsensors5:i386 libstdc++-11-dev-armhf-cross libstdc++6:i386 libstdc++6-armhf-cross libubsan1-armhf-cross libva2:i386 libvdpau1:i386 libx11-xcb1:i386 libxcb-dri2-0:i386 libxcb-dri3-0:i386
  libxcb-glx0:i386 libxcb-present0:i386 libxcb-randr0:i386 libxcb-shm0:i386 libxcb-sync1:i386 libxcb-xfixes0:i386 libxfixes3:i386 libxml2:i386 libxshmfence1:i386 libxxf86vm1:i386
  linux-libc-dev-armhf-cross mesa-utils-bin mesa-vdpau-drivers:i386 nsight-compute-2020.3.1 nsight-systems-2020.4.3 nvidia-compute-utils-535 nvidia-firmware-535-535.113.01
  nvidia-kernel-common-535 nvidia-kernel-source-535 nvidia-modprobe nvidia-prime nvidia-settings nvidia-utils-535 screen-resolution-extra thermald usb-modeswitch usb-modeswitch-data
  vdpau-driver-all:i386 xserver-xorg-video-nvidia-535 xul-ext-ubufox
  Use 'sudo apt autoremove' to remove them.
  0 upgraded, 0 newly installed, 0 to remove, and 3 not upgraded.
  ++ lsb_release -rs
  ++ cut -d. -f1
• VERSION=22
• '[' 22 -lt 17 ']'
• sudo apt-get install -y clang-8 clang++-8 libc++-8-dev libc++abi-8-dev
  Reading package lists... Done
  Building dependency tree... Done
  Reading state information... Done
  Note, selecting 'librust-clang-sys-1.3+clang-8-0-dev' for regex 'clang++-8'
  Note, selecting 'clang-8' for regex 'clang++-8'
  Note, selecting 'librust-clang-sys+clang-8-0-dev' for regex 'clang++-8'
  Note, selecting 'librust-clang-sys-1+clang-8-0-dev' for regex 'clang++-8'
  Note, selecting 'librust-clang-sys-1.3.0+clang-8-0-dev' for regex 'clang++-8'
  Note, selecting 'librust-clang-sys-dev' for regex 'librust-clang-sys+clang-8-0-dev'
  Note, selecting 'librust-clang-sys-dev' for regex 'librust-clang-sys-1+clang-8-0-dev'
  Note, selecting 'librust-clang-sys-dev' for regex 'librust-clang-sys-1.3+clang-8-0-dev'
  Note, selecting 'librust-clang-sys-dev' for regex 'librust-clang-sys-1.3.0+clang-8-0-dev'
  Package 'clang-8' is not available, but is referred to by another package.
  This may mean that the package is missing, has been obsoleted, or is only available from another source

E: Package 'clang-8' has no installation candidate
E: Unable to locate package libc++-8-dev
E: Unable to locate package libc++abi-8-dev

### Tasks

[AgafonovAero]

Some problem!!!

[chenfei8888]

I installed clang-11 and changed it in setup.sh, but build.sh failed to find -lc++fs: no file or directory

[rishi1906]

facing the same issue, has someone found the solution? It looks like clang-8 is not supported in Ubuntu 22.04. @chenfei8888 did you figure out the solution?

[Kanaderu]

According to this SO post it seems like the C/C++ filesystem library was added to the base standard library in later releases so removing them should suffice.

Changes to remove them here:
Kanaderu@ac76e39

Seems to build successfully, haven't tested anything as of yet.

[JulianDev24]

I installed it with clang-12 here is what I have changed within the files. Im using it with Unity

Row | Old Value --> New Value

setup.sh
53 | vulkan-utils --> vulkan-tools 63 | sudo apt-get install -y clang-8 clang++-8 libc++-8-dev libc++abi-8-dev --> sudo apt-get install -y clang-12 clang++-12 libc++-12-dev libc++abi-12-dev

build.sh
67 | export CC="gcc-8" --> export CC="gcc-12" 68 | export CXX="g++-8" --> export CXX="g++-12" 70 | export CC="clang-8" --> export CC="clang-12" 71 | export CXX="clang++-12" --> export CXX="clang++-12"

cmake/cmake-modules/CommonSetup.cmake
62 | set(CXX_EXP_LIB "-L${LLVM_LIBRARY_DIRS} -lc++fs -ferror-limit=10") --> set(CXX_EXP_LIB "-L${LLVM_LIBRARY_DIRS} -ferror-limit=10") 64 | set(CXX_EXP_LIB "-lstdc++fs -fmax-errors=10 -Wnoexcept -Wstrict-null-sentinel") --> set(CXX_EXP_LIB "-fmax-errors=10 -Wnoexcept -Wstrict-null-sentinel")

ros2/src/airsim_ros_pks/CMakeLists.txt
37 | -lstdc++fs -fmax-errors=10") --> -fmax-errors=10")

Unity/build.sh
21 | export CC=/usr/local/opt/llvm@8/bin/clang --> export CC=/usr/local/opt/llvm@12/bin/clang 22 | export CXX=/usr/local/opt/llvm@8/bin/clang++ --> export CXX=/usr/local/opt/llvm@12/bin/clang++ 24 | export CC="clang-8" --> export CC="clang-12" 25 | export CXX="clang++-8" --> export CXX="clang++-12"

[rishi1906]

I installed it with clang-12 here is what I have changed within the files. Im using it with Unity

Row | Old Value --> New Value

setup.sh 53 | vulkan-utils --> vulkan-tools 63 | sudo apt-get install -y clang-8 clang++-8 libc++-8-dev libc++abi-8-dev --> sudo apt-get install -y clang-12 clang++-12 libc++-12-dev libc++abi-12-dev

build.sh 67 | export CC="gcc-8" --> export CC="gcc-12" 68 | export CXX="g++-8" --> export CXX="g++-12" 70 | export CC="clang-8" --> export CC="clang-12" 71 | export CXX="clang++-12" --> export CXX="clang++-12"

cmake/cmake-modules/CommonSetup.cmake 62 | set(CXX_EXP_LIB "-L${LLVM_LIBRARY_DIRS} -lc++fs -ferror-limit=10") --> set(CXX_EXP_LIB "-L${LLVM_LIBRARY_DIRS} -ferror-limit=10") 64 | set(CXX_EXP_LIB "-lstdc++fs -fmax-errors=10 -Wnoexcept -Wstrict-null-sentinel") --> set(CXX_EXP_LIB "-fmax-errors=10 -Wnoexcept -Wstrict-null-sentinel")

ros2/src/airsim_ros_pks/CMakeLists.txt 37 | -lstdc++fs -fmax-errors=10") --> -fmax-errors=10")

Unity/build.sh 21 | export CC=/usr/local/opt/llvm@8/bin/clang --> export CC=/usr/local/opt/llvm@12/bin/clang 22 | export CXX=/usr/local/opt/llvm@8/bin/clang++ --> export CXX=/usr/local/opt/llvm@12/bin/clang++ 24 | export CC="clang-8" --> export CC="clang-12" 25 | export CXX="clang++-8" --> export CXX="clang++-12"

I got following errors, -lstdc++ No such file or directory

> ./build.sh
+ debug=false
+ gcc=false
+ [[ 0 -gt 0 ]]
+ RPC_VERSION_FOLDER=rpclib-2.3.0
+ '[' '!' -d ./external/rpclib/rpclib-2.3.0 ']'
+ '[' -d ./cmake_build ']'
++ which cmake
+ CMAKE=/usr/bin/cmake
+ false
+ build_dir=build_release
++ uname
+ '[' Linux == Darwin ']'
+ false
+ export CC=clang-12
+ CC=clang-12
+ export CXX=clang++-12
+ CXX=clang++-12
+ [[ ! -d ./AirLib/deps/eigen3/Eigen ]]
+ echo 'putting build in build_release folder, to clean, just delete the directory...'
putting build in build_release folder, to clean, just delete the directory...
+ [[ -f ./cmake/CMakeCache.txt ]]
+ [[ -d ./cmake/CMakeFiles ]]
+ [[ ! -d build_release ]]
+ mkdir -p build_release
+ CMAKE_VARS=
++ uname
+ '[' Linux == Darwin ']'
+ pushd build_release
+ false
+ folder_name=Release
+ /usr/bin/cmake ../cmake -DCMAKE_BUILD_TYPE=Release
-- The C compiler identification is Clang 12.0.1
-- The CXX compiler identification is Clang 12.0.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/clang-12 - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - failed
-- Check for working CXX compiler: /usr/bin/clang++-12
-- Check for working CXX compiler: /usr/bin/clang++-12 - broken
CMake Error at /usr/share/cmake-3.22/Modules/CMakeTestCXXCompiler.cmake:62 (message):
  The C++ compiler

    "/usr/bin/clang++-12"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /home/iit/AirSim/build_release/CMakeFiles/CMakeTmp
    
    Run Build Command(s):/usr/bin/gmake -f Makefile cmTC_ba24f/fast && /usr/bin/gmake  -f CMakeFiles/cmTC_ba24f.dir/build.make CMakeFiles/cmTC_ba24f.dir/build
    gmake[1]: Entering directory '/home/iit/AirSim/build_release/CMakeFiles/CMakeTmp'
    Building CXX object CMakeFiles/cmTC_ba24f.dir/testCXXCompiler.cxx.o
    /usr/bin/clang++-12    -MD -MT CMakeFiles/cmTC_ba24f.dir/testCXXCompiler.cxx.o -MF CMakeFiles/cmTC_ba24f.dir/testCXXCompiler.cxx.o.d -o CMakeFiles/cmTC_ba24f.dir/testCXXCompiler.cxx.o -c /home/iit/AirSim/build_release/CMakeFiles/CMakeTmp/testCXXCompiler.cxx
    Linking CXX executable cmTC_ba24f
    /usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_ba24f.dir/link.txt --verbose=1
    /usr/bin/clang++-12 CMakeFiles/cmTC_ba24f.dir/testCXXCompiler.cxx.o -o cmTC_ba24f 
    /usr/bin/ld: cannot find -lstdc++: No such file or directory
    clang: error: linker command failed with exit code 1 (use -v to see invocation)
    gmake[1]: *** [CMakeFiles/cmTC_ba24f.dir/build.make:100: cmTC_ba24f] Error 1
    gmake[1]: Leaving directory '/home/iit/AirSim/build_release/CMakeFiles/CMakeTmp'
    gmake: *** [Makefile:127: cmTC_ba24f/fast] Error 2
    
    

  

  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:2 (project)


-- Configuring incomplete, errors occurred!
See also "/home/iit/AirSim/build_release/CMakeFiles/CMakeOutput.log".
See also "/home/iit/AirSim/build_release/CMakeFiles/CMakeError.log".
+ popd
~/AirSim ~/AirSim
+ rm -r build_release
+ exit 1

[chenfei8888]

facing the same issue, has someone found the solution? It looks like clang-8 is not supported in Ubuntu 22.04. @chenfei8888 did you figure out the solution?

I ended up using ubuntu20.04.

[mikeb127]

I installed it with clang-12 here is what I have changed within the files. Im using it with Unity
Row | Old Value --> New Value
setup.sh 53 | vulkan-utils --> vulkan-tools 63 | sudo apt-get install -y clang-8 clang++-8 libc++-8-dev libc++abi-8-dev --> sudo apt-get install -y clang-12 clang++-12 libc++-12-dev libc++abi-12-dev
build.sh 67 | export CC="gcc-8" --> export CC="gcc-12" 68 | export CXX="g++-8" --> export CXX="g++-12" 70 | export CC="clang-8" --> export CC="clang-12" 71 | export CXX="clang++-12" --> export CXX="clang++-12"
cmake/cmake-modules/CommonSetup.cmake 62 | set(CXX_EXP_LIB "-L${LLVM_LIBRARY_DIRS} -lc++fs -ferror-limit=10") --> set(CXX_EXP_LIB "-L${LLVM_LIBRARY_DIRS} -ferror-limit=10") 64 | set(CXX_EXP_LIB "-lstdc++fs -fmax-errors=10 -Wnoexcept -Wstrict-null-sentinel") --> set(CXX_EXP_LIB "-fmax-errors=10 -Wnoexcept -Wstrict-null-sentinel")
ros2/src/airsim_ros_pks/CMakeLists.txt 37 | -lstdc++fs -fmax-errors=10") --> -fmax-errors=10")
Unity/build.sh 21 | export CC=/usr/local/opt/llvm@8/bin/clang --> export CC=/usr/local/opt/llvm@12/bin/clang 22 | export CXX=/usr/local/opt/llvm@8/bin/clang++ --> export CXX=/usr/local/opt/llvm@12/bin/clang++ 24 | export CC="clang-8" --> export CC="clang-12" 25 | export CXX="clang++-8" --> export CXX="clang++-12"

I got following errors, -lstdc++ No such file or directory

> ./build.sh
+ debug=false
+ gcc=false
+ [[ 0 -gt 0 ]]
+ RPC_VERSION_FOLDER=rpclib-2.3.0
+ '[' '!' -d ./external/rpclib/rpclib-2.3.0 ']'
+ '[' -d ./cmake_build ']'
++ which cmake
+ CMAKE=/usr/bin/cmake
+ false
+ build_dir=build_release
++ uname
+ '[' Linux == Darwin ']'
+ false
+ export CC=clang-12
+ CC=clang-12
+ export CXX=clang++-12
+ CXX=clang++-12
+ [[ ! -d ./AirLib/deps/eigen3/Eigen ]]
+ echo 'putting build in build_release folder, to clean, just delete the directory...'
putting build in build_release folder, to clean, just delete the directory...
+ [[ -f ./cmake/CMakeCache.txt ]]
+ [[ -d ./cmake/CMakeFiles ]]
+ [[ ! -d build_release ]]
+ mkdir -p build_release
+ CMAKE_VARS=
++ uname
+ '[' Linux == Darwin ']'
+ pushd build_release
+ false
+ folder_name=Release
+ /usr/bin/cmake ../cmake -DCMAKE_BUILD_TYPE=Release
-- The C compiler identification is Clang 12.0.1
-- The CXX compiler identification is Clang 12.0.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/clang-12 - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - failed
-- Check for working CXX compiler: /usr/bin/clang++-12
-- Check for working CXX compiler: /usr/bin/clang++-12 - broken
CMake Error at /usr/share/cmake-3.22/Modules/CMakeTestCXXCompiler.cmake:62 (message):
  The C++ compiler

    "/usr/bin/clang++-12"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /home/iit/AirSim/build_release/CMakeFiles/CMakeTmp
    
    Run Build Command(s):/usr/bin/gmake -f Makefile cmTC_ba24f/fast && /usr/bin/gmake  -f CMakeFiles/cmTC_ba24f.dir/build.make CMakeFiles/cmTC_ba24f.dir/build
    gmake[1]: Entering directory '/home/iit/AirSim/build_release/CMakeFiles/CMakeTmp'
    Building CXX object CMakeFiles/cmTC_ba24f.dir/testCXXCompiler.cxx.o
    /usr/bin/clang++-12    -MD -MT CMakeFiles/cmTC_ba24f.dir/testCXXCompiler.cxx.o -MF CMakeFiles/cmTC_ba24f.dir/testCXXCompiler.cxx.o.d -o CMakeFiles/cmTC_ba24f.dir/testCXXCompiler.cxx.o -c /home/iit/AirSim/build_release/CMakeFiles/CMakeTmp/testCXXCompiler.cxx
    Linking CXX executable cmTC_ba24f
    /usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_ba24f.dir/link.txt --verbose=1
    /usr/bin/clang++-12 CMakeFiles/cmTC_ba24f.dir/testCXXCompiler.cxx.o -o cmTC_ba24f 
    /usr/bin/ld: cannot find -lstdc++: No such file or directory
    clang: error: linker command failed with exit code 1 (use -v to see invocation)
    gmake[1]: *** [CMakeFiles/cmTC_ba24f.dir/build.make:100: cmTC_ba24f] Error 1
    gmake[1]: Leaving directory '/home/iit/AirSim/build_release/CMakeFiles/CMakeTmp'
    gmake: *** [Makefile:127: cmTC_ba24f/fast] Error 2
    
    

  

  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:2 (project)


-- Configuring incomplete, errors occurred!
See also "/home/iit/AirSim/build_release/CMakeFiles/CMakeOutput.log".
See also "/home/iit/AirSim/build_release/CMakeFiles/CMakeError.log".
+ popd
~/AirSim ~/AirSim
+ rm -r build_release
+ exit 1

Just in case anyone else arrives here via google. Run the following in terminal and then re-run build.sh:

sudo apt-get -y install libunwind-dev libstdc++-12-dev

Should work now.

Happy to create a PR for @JulianDev24 + my changes if repo maintainers are interested?

[uxduck]

Happy to create a PR for @JulianDev24 + my changes if repo maintainers are interested?

The maintainers were unfortunately laid off. Initially, microsoft announced they were deprecated this repo for a newer, "Project Airsim" (probably an internal reorg). In October 2023, https://wonderfulengineering.com/microsoft-just-shut-down-its-industrial-metaverse-project-airsim-and-laid-off-its-team/

Microsoft Just Shut Down Its ‘Industrial Metaverse’ Project Airsim And Laid Off Its Team

I wonder if someone should/could fork it, maybe that person could be me in many months time - just getting started with Airsim right now 😂️

---

Getting AirSim building in early 2024

Warning: After getting Airsim to build, I couldn't open the Blocks unreal project in Unreal 4.27:

I use Debian 12 (admittedly, not ubuntu 22.04), and had to use LLVM/clang18 and remove usage of -lc++fs since that is no longer necessary. Apply these changes:

diff --git a/Unity/build.sh b/Unity/build.sh
index 5e0aa938..1a2f3741 100755
--- a/Unity/build.sh
+++ b/Unity/build.sh
@@ -18,11 +18,11 @@ fi
 
 cd linux-build
 if [ "$(uname)" == "Darwin" ]; then
-    export CC=/usr/local/opt/llvm@8/bin/clang
-    export CXX=/usr/local/opt/llvm@8/bin/clang++
+    export CC=/usr/local/opt/llvm@18/bin/clang
+    export CXX=/usr/local/opt/llvm@18/bin/clang++
 else
-    export CC="clang-8"
-    export CXX="clang++-8"
+    export CC="clang-18"
+    export CXX="clang++-18"
 fi
 
 # check for local cmake build created by setup.sh
diff --git a/build.sh b/build.sh
index 8b45d64b..cfde0f4f 100755
--- a/build.sh
+++ b/build.sh
@@ -64,11 +64,11 @@ if [ "$(uname)" == "Darwin" ]; then
     export CXX="$(brew --prefix)/opt/llvm/bin/clang++"
 else
     if $gcc; then
-        export CC="gcc-8"
-        export CXX="g++-8"
+        export CC="gcc-18"
+        export CXX="g++-18"
     else
-        export CC="clang-8"
-        export CXX="clang++-8"
+        export CC="clang-18"
+        export CXX="clang++-18"
     fi
 fi
 
diff --git a/cmake/cmake-modules/CommonSetup.cmake b/cmake/cmake-modules/CommonSetup.cmake
index 11d0c9bc..f814b18f 100644
--- a/cmake/cmake-modules/CommonSetup.cmake
+++ b/cmake/cmake-modules/CommonSetup.cmake
@@ -59,9 +59,9 @@ macro(CommonSetup)
             if (${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")
                 set(CMAKE_CXX_FLAGS "-stdlib=libc++ -Wno-documentation -Wno-unknown-warning-option ${CMAKE_CXX_FLAGS}")
                 find_package(LLVM REQUIRED CONFIG)
-                set(CXX_EXP_LIB "-L${LLVM_LIBRARY_DIRS} -lc++fs -ferror-limit=10")
+                set(CXX_EXP_LIB "-L${LLVM_LIBRARY_DIRS} -ferror-limit=10")
             else()
-                set(CXX_EXP_LIB "-lstdc++fs -fmax-errors=10 -Wnoexcept -Wstrict-null-sentinel")
+                set(CXX_EXP_LIB "-fmax-errors=10 -Wnoexcept -Wstrict-null-sentinel")
             endif ()
         endif ()
 
diff --git a/ros2/src/airsim_ros_pkgs/CMakeLists.txt b/ros2/src/airsim_ros_pkgs/CMakeLists.txt
index 6d961a43..b2684f7c 100644
--- a/ros2/src/airsim_ros_pkgs/CMakeLists.txt
+++ b/ros2/src/airsim_ros_pkgs/CMakeLists.txt
@@ -34,7 +34,7 @@ set(CMAKE_CXX_FLAGS "-O3 -Wall -Wextra -Wnoexcept -Wstrict-null-sentinel")
 set(CXX_EXP_LIB "-nostdinc++ -I/usr/include/c++/8 -I/usr/include/x86_64-linux-gnu/c++/8 -nodefaultlibs 
 -l/usr/lib/x86_64-linux-gnu/libc++.so -l/usr/lib/x86_64-linux-gnu/libc++abi.so
 -lm -lc -lgcc_s -lgcc
--lstdc++fs -fmax-errors=10")
+-fmax-errors=10")
 set(RPC_LIB_INCLUDES " ${AIRSIM_ROOT}/external/rpclib/rpclib-2.3.0/include")
 set(RPC_LIB rpc)
 message(STATUS "found RPC_LIB_INCLUDES=${RPC_LIB_INCLUDES}")
diff --git a/setup.sh b/setup.sh
index fd0b71e2..5edf8785 100755
--- a/setup.sh
+++ b/setup.sh
@@ -50,7 +50,7 @@ else #linux
         software-properties-common \
         wget \
         libvulkan1 \
-        vulkan-utils
+        vulkan-tools
 
     #install clang and build tools
     VERSION=$(lsb_release -rs | cut -d. -f1)
@@ -60,7 +60,7 @@ else #linux
         wget -O - http://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
         sudo apt-get update
     fi
-    sudo apt-get install -y clang-8 clang++-8 libc++-8-dev libc++abi-8-dev
+    sudo apt-get install -y clang-18 clang++-18 libc++-18-dev libc++abi-18-dev
 fi
 
 if ! which cmake; then

[xxEoD2242]

@ben-xD We did: Colosseum

[uxduck]

@xxEoD2242, your repo has the same issues since it still uses clang 8 and references old libraries like vulkan-utils? See https://github.com/CodexLabsLLC/Colosseum/blob/2383b0adfc674d34e68cb05ef163ca1c00479352/setup.sh#L53 and https://github.com/CodexLabsLLC/Colosseum/blob/2383b0adfc674d34e68cb05ef163ca1c00479352/setup.sh#L63

[xxEoD2242]

@ben-xD We don't support Ubuntu 22.04 natively. You need to update the clang and vulkan libraries if you want to install it locally. Or use Docker

[wouter-heerwegh]

We're struggling with a similar issue on our sim. Changing clang version from 8 → 12 breaks compatibility on Ubuntu 20.04, because of pthread symbols that are exposed in the rpclib library that are undefined for the cross-compile tool for Unreal Engine 4.27. Apparently this PR fixes the issues on Ubuntu 22.04. We do however use an older version of Airsim that was stripped down a lot.

@xxEoD2242 Do you see a similar issue when changing from clang version 8 → 12 when using UE 5+? The symbol I'm talking about is pthread_cond_clockwait which is available since glibc 2.30, while the crosscompile toolchain for UE 4.27 uses glibc v2.17.

[lu-chenxi]

I installed it with clang-12 here is what I have changed within the files. Im using it with Unity

Row | Old Value --> New Value

setup.sh 53 | vulkan-utils --> vulkan-tools 63 | sudo apt-get install -y clang-8 clang++-8 libc++-8-dev libc++abi-8-dev --> sudo apt-get install -y clang-12 clang++-12 libc++-12-dev libc++abi-12-dev

build.sh 67 | export CC="gcc-8" --> export CC="gcc-12" 68 | export CXX="g++-8" --> export CXX="g++-12" 70 | export CC="clang-8" --> export CC="clang-12" 71 | export CXX="clang++-12" --> export CXX="clang++-12"

cmake/cmake-modules/CommonSetup.cmake 62 | set(CXX_EXP_LIB "-L${LLVM_LIBRARY_DIRS} -lc++fs -ferror-limit=10") --> set(CXX_EXP_LIB "-L${LLVM_LIBRARY_DIRS} -ferror-limit=10") 64 | set(CXX_EXP_LIB "-lstdc++fs -fmax-errors=10 -Wnoexcept -Wstrict-null-sentinel") --> set(CXX_EXP_LIB "-fmax-errors=10 -Wnoexcept -Wstrict-null-sentinel")

ros2/src/airsim_ros_pks/CMakeLists.txt 37 | -lstdc++fs -fmax-errors=10") --> -fmax-errors=10")

Unity/build.sh 21 | export CC=/usr/local/opt/llvm@8/bin/clang --> export CC=/usr/local/opt/llvm@12/bin/clang 22 | export CXX=/usr/local/opt/llvm@8/bin/clang++ --> export CXX=/usr/local/opt/llvm@12/bin/clang++ 24 | export CC="clang-8" --> export CC="clang-12" 25 | export CXX="clang++-8" --> export CXX="clang++-12"

it works for me!
thx!