Missing shared libraries on fresh Ubuntu 25.04 ARM64

[kammce]

I get the following errors when building on Ubuntu 25.10LTS using UTM on my Mac Book M1 2020.

Command:

conan install --tool-requires="ninja/1.13.2" --build="ninja/*" -pr:a hal/tc/llvm --build=cmake --build=missing:cmake/*

Response:

CMake Error at /home/khalil-estell/.conan2/p/b/cmaked5e99d48e244a/p/share/cmake-4.2/Modules/CMakeTestCXXCompiler.cmake:73 (message):
  The C++ compiler

    "/home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/bin/clang++"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: '/home/khalil-estell/.conan2/p/b/ninja1d6617a9a4f53/b/build/Release/CMakeFiles/CMakeScratch/TryCompile-zzfZid'
    
    Run Build Command(s): /home/khalil-estell/.conan2/p/b/cmaked5e99d48e244a/p/bin/cmake -E env VERBOSE=1 /usr/bin/gmake -f Makefile cmTC_b3a91/fast
    /usr/bin/gmake  -f CMakeFiles/cmTC_b3a91.dir/build.make CMakeFiles/cmTC_b3a91.dir/build
    gmake[1]: Entering directory '/home/khalil-estell/.conan2/p/b/ninja1d6617a9a4f53/b/build/Release/CMakeFiles/CMakeScratch/TryCompile-zzfZid'
    Building CXX object CMakeFiles/cmTC_b3a91.dir/testCXXCompiler.cxx.o
    /home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/bin/clang++   -stdlib=libc++ -flto  -ffunction-sections  -fdata-sections  -std=c++23 -MD -MT CMakeFiles/cmTC_b3a91.dir/testCXXCompiler.cxx.o -MF CMakeFiles/cmTC_b3a91.dir/testCXXCompiler.cxx.o.d -o CMakeFiles/cmTC_b3a91.dir/testCXXCompiler.cxx.o -c /home/khalil-estell/.conan2/p/b/ninja1d6617a9a4f53/b/build/Release/CMakeFiles/CMakeScratch/TryCompile-zzfZid/testCXXCompiler.cxx
    Linking CXX executable cmTC_b3a91
    /home/khalil-estell/.conan2/p/b/cmaked5e99d48e244a/p/bin/cmake -E cmake_link_script CMakeFiles/cmTC_b3a91.dir/link.txt --verbose=1
    /home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/bin/ld.lld: error while loading shared libraries: libxml2.so.2: cannot open shared object file: No such file or directory
    clang++: error: unable to execute command: No such file or directory
    clang++: error: linker command failed due to signal (use -v to see invocation)
    /home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/bin/clang++ -stdlib=libc++ -flto  -ffunction-sections  -fdata-sections  -fuse-ld=lld  -flto  -Wl,--gc-sections  -Wl,-rpath,/home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/lib/aarch64-unknown-linux-gnu -L/home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/lib/aarch64-unknown-linux-gnu  -lc++ -lc++abi  CMakeFiles/cmTC_b3a91.dir/testCXXCompiler.cxx.o -o cmTC_b3a91
    gmake[1]: *** [CMakeFiles/cmTC_b3a91.dir/build.make:103: cmTC_b3a91] Error 1
    gmake[1]: Leaving directory '/home/khalil-estell/.conan2/p/b/ninja1d6617a9a4f53/b/build/Release/CMakeFiles/CMakeScratch/TryCompile-zzfZid'
    gmake: *** [Makefile:134: cmTC_b3a91/fast] Error 2

Installing libxml2-dev via sudo apt install libxml2-dev does not resolve this issue..
It does create /usr/lib/aarch64-linux-gnu/libxml2.so which I used to create a symbol link to libxml2.so.2 like so:

sudo ln /usr/lib/aarch64-linux-gnu/libxml2.so /usr/lib/aarch64-linux-gnu/libxml2.so.2

But this leads to the following errors:

CMake Error at /home/khalil-estell/.conan2/p/b/cmaked5e99d48e244a/p/share/cmake-4.2/Modules/CMakeTestCXXCompiler.cmake:73 (message):
  The C++ compiler

    "/home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/bin/clang++"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: '/home/khalil-estell/.conan2/p/b/ninja25b5e30e9a90b/b/build/Release/CMakeFiles/CMakeScratch/TryCompile-Ym3KkN'
    
    Run Build Command(s): /home/khalil-estell/.conan2/p/b/cmaked5e99d48e244a/p/bin/cmake -E env VERBOSE=1 /usr/bin/gmake -f Makefile cmTC_2295b/fast
    /usr/bin/gmake  -f CMakeFiles/cmTC_2295b.dir/build.make CMakeFiles/cmTC_2295b.dir/build
    gmake[1]: Entering directory '/home/khalil-estell/.conan2/p/b/ninja25b5e30e9a90b/b/build/Release/CMakeFiles/CMakeScratch/TryCompile-Ym3KkN'
    Building CXX object CMakeFiles/cmTC_2295b.dir/testCXXCompiler.cxx.o
    /home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/bin/clang++   -stdlib=libc++ -flto  -ffunction-sections  -fdata-sections  -std=c++23 -MD -MT CMakeFiles/cmTC_2295b.dir/testCXXCompiler.cxx.o -MF CMakeFiles/cmTC_2295b.dir/testCXXCompiler.cxx.o.d -o CMakeFiles/cmTC_2295b.dir/testCXXCompiler.cxx.o -c /home/khalil-estell/.conan2/p/b/ninja25b5e30e9a90b/b/build/Release/CMakeFiles/CMakeScratch/TryCompile-Ym3KkN/testCXXCompiler.cxx
    Linking CXX executable cmTC_2295b
    /home/khalil-estell/.conan2/p/b/cmaked5e99d48e244a/p/bin/cmake -E cmake_link_script CMakeFiles/cmTC_2295b.dir/link.txt --verbose=1
    /home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/bin/ld.lld: /usr/lib/aarch64-linux-gnu/libxml2.so.2: no version information available (required by /home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/bin/ld.lld)
    /home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/bin/ld.lld: /usr/lib/aarch64-linux-gnu/libxml2.so.2: no version information available (required by /home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/bin/ld.lld)
    ld.lld: error: cannot open crtbeginS.o: No such file or directory
    ld.lld: error: unable to find library -lgcc_s
    ld.lld: error: unable to find library -lgcc
    ld.lld: error: unable to find library -lgcc_s
    ld.lld: error: unable to find library -lgcc
    ld.lld: error: cannot open crtendS.o: No such file or directory
    clang++: error: linker command failed with exit code 1 (use -v to see invocation)
    /home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/bin/clang++ -stdlib=libc++ -flto  -ffunction-sections  -fdata-sections  -fuse-ld=lld  -flto  -Wl,--gc-sections  -Wl,-rpath,/home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/lib/aarch64-unknown-linux-gnu -L/home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/lib/aarch64-unknown-linux-gnu  -lc++ -lc++abi  CMakeFiles/cmTC_2295b.dir/testCXXCompiler.cxx.o -o cmTC_2295b
    gmake[1]: *** [CMakeFiles/cmTC_2295b.dir/build.make:103: cmTC_2295b] Error 1
    gmake[1]: Leaving directory '/home/khalil-estell/.conan2/p/b/ninja25b5e30e9a90b/b/build/Release/CMakeFiles/CMakeScratch/TryCompile-Ym3KkN'
    gmake: *** [Makefile:134: cmTC_2295b/fast] Error 2

[kammce]

Using ldd gave these results:

ldd /home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/bin/ld.lld
	linux-vdso.so.1 (0x0000faf33f2bc000)
	libxml2.so.2 => not found
	libm.so.6 => /usr/lib/aarch64-linux-gnu/libm.so.6 (0x0000faf3381e0000)
	libz.so.1 => /usr/lib/aarch64-linux-gnu/libz.so.1 (0x0000faf3381a0000)
	libc.so.6 => /usr/lib/aarch64-linux-gnu/libc.so.6 (0x0000faf337fa0000)
	/lib/ld-linux-aarch64.so.1 (0x0000faf33f280000)

So we just need to fill that libxml2.so.2 on a fresh install. Looks like libm, libz and even libc are all there already.

[kammce]

I can symlink libxml2.so.16 (what shows up on my machine) to libxml2.so.2 and this allows my code to link. I'll test if this allows me to run the executable as well

[kammce]

Trying to build libhal-arm-mcu via conan build . -pr:a hal/tc/llvm (with the current as of today profiles) gets me this:

: && /home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/bin/clang++ -stdlib=libc++ -flto  -ffunction-sections  -fdata-sections -O3 -DNDEBUG -fuse-ld=lld  -flto  -Wl,--gc-sections  -Wl,-rpath,/home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/lib/aarch64-unknown-linux-gnu -L/home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/lib/aarch64-unknown-linux-gnu  -lc++ -lc++abi -fsanitize=address --coverage -fprofile-arcs -ftest-coverage -Xlinker --dependency-file=CMakeFiles/unit_test.dir/link.d CMakeFiles/unit_test.dir/src/terminate_handler.cpp.o CMakeFiles/unit_test.dir/src/system_controller.cpp.o CMakeFiles/unit_test.dir/src/dwt_counter.cpp.o CMakeFiles/unit_test.dir/src/interrupt.cpp.o CMakeFiles/unit_test.dir/src/systick_timer.cpp.o CMakeFiles/unit_test.dir/src/lpc40/adc.cpp.o CMakeFiles/unit_test.dir/src/lpc40/can.cpp.o CMakeFiles/unit_test.dir/src/lpc40/clock.cpp.o CMakeFiles/unit_test.dir/src/lpc40/dac.cpp.o CMakeFiles/unit_test.dir/src/lpc40/dma.cpp.o CMakeFiles/unit_test.dir/src/lpc40/i2c.cpp.o CMakeFiles/unit_test.dir/src/lpc40/input_pin.cpp.o CMakeFiles/unit_test.dir/src/lpc40/interrupt_pin.cpp.o CMakeFiles/unit_test.dir/src/lpc40/interrupt.cpp.o CMakeFiles/unit_test.dir/src/lpc40/output_pin.cpp.o CMakeFiles/unit_test.dir/src/lpc40/pin.cpp.o CMakeFiles/unit_test.dir/src/lpc40/power.cpp.o CMakeFiles/unit_test.dir/src/lpc40/pwm.cpp.o CMakeFiles/unit_test.dir/src/lpc40/spi.cpp.o CMakeFiles/unit_test.dir/src/lpc40/dma_spi.cpp.o CMakeFiles/unit_test.dir/src/lpc40/stream_dac.cpp.o CMakeFiles/unit_test.dir/src/lpc40/uart.cpp.o CMakeFiles/unit_test.dir/src/stm32_generic/i2c.cpp.o CMakeFiles/unit_test.dir/src/stm32_generic/pwm.cpp.o CMakeFiles/unit_test.dir/src/stm32_generic/quadrature_encoder.cpp.o CMakeFiles/unit_test.dir/src/stm32_generic/spi.cpp.o CMakeFiles/unit_test.dir/src/stm32_generic/timer.cpp.o CMakeFiles/unit_test.dir/src/stm32_generic/uart.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/can.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/can2.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/clock.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/gpio.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/independent_watchdog.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/input_pin.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/interrupt.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/output_pin.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/pin.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/power.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/pwm.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/quadrature_encoder.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/timer.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/uart.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/spi.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/adc.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/usart.cpp.o CMakeFiles/unit_test.dir/src/stm32f1/usb.cpp.o CMakeFiles/unit_test.dir/src/stm32f411/clock.cpp.o CMakeFiles/unit_test.dir/src/stm32f411/dma.cpp.o CMakeFiles/unit_test.dir/src/stm32f411/i2c.cpp.o CMakeFiles/unit_test.dir/src/stm32f411/input_pin.cpp.o CMakeFiles/unit_test.dir/src/stm32f411/interrupt.cpp.o CMakeFiles/unit_test.dir/src/stm32f411/output_pin.cpp.o CMakeFiles/unit_test.dir/src/stm32f411/pin.cpp.o CMakeFiles/unit_test.dir/src/stm32f411/power.cpp.o CMakeFiles/unit_test.dir/src/stm32f411/spi.cpp.o CMakeFiles/unit_test.dir/src/stm32f411/uart.cpp.o CMakeFiles/unit_test.dir/src/stm32f40/output_pin.cpp.o CMakeFiles/unit_test.dir/tests/dwt_counter.test.cpp.o CMakeFiles/unit_test.dir/tests/interrupt.test.cpp.o CMakeFiles/unit_test.dir/tests/main.test.cpp.o CMakeFiles/unit_test.dir/tests/systick_timer.test.cpp.o CMakeFiles/unit_test.dir/tests/lpc40/adc.test.cpp.o CMakeFiles/unit_test.dir/tests/lpc40/can.test.cpp.o CMakeFiles/unit_test.dir/tests/lpc40/i2c.test.cpp.o CMakeFiles/unit_test.dir/tests/lpc40/input_pin.test.cpp.o CMakeFiles/unit_test.dir/tests/lpc40/interrupt_pin.test.cpp.o CMakeFiles/unit_test.dir/tests/lpc40/output_pin.test.cpp.o CMakeFiles/unit_test.dir/tests/lpc40/pwm.test.cpp.o CMakeFiles/unit_test.dir/tests/lpc40/spi.test.cpp.o CMakeFiles/unit_test.dir/tests/lpc40/stream_dac.test.cpp.o CMakeFiles/unit_test.dir/tests/lpc40/uart.test.cpp.o CMakeFiles/unit_test.dir/tests/stm32f1/can.test.cpp.o CMakeFiles/unit_test.dir/tests/stm32f1/can2.test.cpp.o CMakeFiles/unit_test.dir/tests/stm32f1/output_pin.test.cpp.o CMakeFiles/unit_test.dir/tests/stm32f1/uart.test.cpp.o CMakeFiles/unit_test.dir/tests/stm32f1/spi.test.cpp.o CMakeFiles/unit_test.dir/tests/stm32f1/adc.test.cpp.o CMakeFiles/unit_test.dir/tests/stm32f1/usb.test.cpp.o CMakeFiles/unit_test.dir/tests/stm32f411/output_pin.test.cpp.o CMakeFiles/unit_test.dir/tests/stm32f411/spi.test.cpp.o -o unit_test -L/home/khalil-estell/.conan2/p/boost992b7dac743d9/p/lib   -L/home/khalil-estell/.conan2/p/libha845e42a4908cd/p/lib -Wl,-rpath,/home/khalil-estell/.conan2/p/boost992b7dac743d9/p/lib:/home/khalil-estell/.conan2/p/libha845e42a4908cd/p/lib  /home/khalil-estell/.conan2/p/libha845e42a4908cd/p/lib/liblibhal-util.a && :
/home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/bin/ld.lld: /usr/lib/aarch64-linux-gnu/libxml2.so.2: no version information available (required by /home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/bin/ld.lld)
/home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/bin/ld.lld: /usr/lib/aarch64-linux-gnu/libxml2.so.2: no version information available (required by /home/khalil-estell/.conan2/p/b/llvm-8d6b6357e2e47/p/bin/ld.lld)
ld.lld: error: /home/khalil-estell/.conan2/p/libha845e42a4908cd/p/lib/liblibhal-util.a(steady_clock.cpp.o) is incompatible with elf64-littleaarch64
ld.lld: error: /home/khalil-estell/.conan2/p/libha845e42a4908cd/p/lib/liblibhal-util.a(streams.cpp.o) is incompatible with elf64-littleaarch64
ld.lld: error: /home/khalil-estell/.conan2/p/libha845e42a4908cd/p/lib/liblibhal-util.a(atomic_spin_lock.cpp.o) is incompatible with elf64-littleaarch64
ld.lld: error: /home/khalil-estell/.conan2/p/libha845e42a4908cd/p/lib/liblibhal-util.a(bit_bang_i2c.cpp.o) is incompatible with elf64-littleaarch64
ld.lld: error: /home/khalil-estell/.conan2/p/libha845e42a4908cd/p/lib/liblibhal-util.a(bit_bang_spi.cpp.o) is incompatible with elf64-littleaarch64
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
[83/141] Building CXX object CMakeFiles/libhal-arm-mcu.dir/src/system_controller.cpp.o
ninja: build stopped: subcommand failed.

[kammce]

I think the prebuilt incompatibility issue is something else but important to note because it means that using the github actions to build the binaries may not work for others.

[kammce]

After creating the libhal-util package locally (and updating its cmake so it works with the llvm profile's 3.28.0 requirement), I was able to build libhal-arm-mcu and run its unit test.