Installing tracktion_engine on a raspberry pi

Tracktion Engine
1

Im trying to install tracktion engine on a raspberry pi 4 B running raspberry os, but i keep getting this error when running make:


Building CXX object examples/Benchmarks/CMakeFiles/Benchmarks.dir/Benchmarks.cpp.o
cc1plus: error: unknown value 'sandybridge' for '-march'
cc1plus: note: valid arguments are: armv8-a armv8.1-a armv8.2-a armv8.3-a armv8.4-a armv8.5-a armv8.6-a armv8.7-a armv8.8-a armv8-r armv9-a native
make[2]: *** [examples/Benchmarks/CMakeFiles/Benchmarks.dir/build.make:80: examples/Benchmarks/CMakeFiles/Benchmarks.dir/Benchmarks.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:271: examples/Benchmarks/CMakeFiles/Benchmarks.dir/all] Error 2
make: *** [Makefile:146: all] Error 2

when i change the -march argument in examples/Benchmarks/CMakeFiles/Benchmarks.dir/flags.make to ‘native’ i get this error:

[  1%] Building CXX object examples/Benchmarks/CMakeFiles/Benchmarks.dir/Benchmarks.cpp.o
In file included from /home/kiosk_user/tracktion_engine/modules/tracktion_core/utilities/tracktion_Tempo.h:19,
                 from /home/kiosk_user/tracktion_engine/modules/tracktion_core/tracktion_core.h:56,
                 from /home/kiosk_user/tracktion_engine/build/examples/Benchmarks/Benchmarks_artefacts/JuceLibraryCode/JuceHeader.h:14,
                 from /home/kiosk_user/tracktion_engine/examples/Benchmarks/Benchmarks.cpp:11:
/home/kiosk_user/tracktion_engine/modules/tracktion_core/utilities/tracktion_Bezier.h: In function 'std::pair<double, double> tracktion::core::getBezierPoint(double, double, double, double, double)':
/home/kiosk_user/tracktion_engine/modules/tracktion_core/utilities/tracktion_Bezier.h:20:72: note: parameter passing for argument of type 'std::pair<double, double>' when C++17 is enabled changed to match C++14 in GCC 10.1
   20 |                                                              double c) noexcept
      |                                                                        ^~~~~~~~
In file included from /home/kiosk_user/tracktion_engine/modules/tracktion_engine/../3rd_party/crill/progressive_backoff_wait.h:10,
                 from /home/kiosk_user/tracktion_engine/modules/tracktion_engine/../3rd_party/crill/spin_mutex.h:11,
                 from /home/kiosk_user/tracktion_engine/modules/tracktion_engine/tracktion_engine.h:389,
                 from /home/kiosk_user/tracktion_engine/build/examples/Benchmarks/Benchmarks_artefacts/JuceLibraryCode/JuceHeader.h:18:
/home/kiosk_user/tracktion_engine/modules/tracktion_engine/../3rd_party/crill/impl/progressive_backoff_wait_impl.h: In function 'void crill::impl::progressive_backoff_wait_armv8(Predicate&&)':
/home/kiosk_user/tracktion_engine/modules/tracktion_engine/../3rd_party/crill/impl/progressive_backoff_wait_impl.h:80:17: error: there are no arguments to '__wfe' that depend on a template parameter, so a declaration of '__wfe' must be available [-fpermissive]
   80 |                 __wfe();
      |                 ^~~~~
/home/kiosk_user/tracktion_engine/modules/tracktion_engine/../3rd_party/crill/impl/progressive_backoff_wait_impl.h:80:17: note: (if you use '-fpermissive', G++ will accept your code, but allowing the use of an undeclared name is deprecated)
In file included from /home/kiosk_user/tracktion_engine/modules/tracktion_engine/tracktion_engine.h:483:
/home/kiosk_user/tracktion_engine/modules/tracktion_engine/playback/tracktion_LevelMeasurer.h: In member function 'std::pair<float, float> tracktion::engine::LevelMeasurer::getLevelCache() const':
/home/kiosk_user/tracktion_engine/modules/tracktion_engine/playback/tracktion_LevelMeasurer.h:95:61: note: parameter passing for argument of type 'std::pair<float, float>' when C++17 is enabled changed to match C++14 in GCC 10.1
   95 |     std::pair<float, float> getLevelCache() const noexcept  { return { levelCacheL, levelCacheR }; }
      |                                                             ^
In file included from /home/kiosk_user/tracktion_engine/modules/tracktion_graph/../3rd_party/rigtorp/tracktion_rigtorp.hpp:17,
                 from /home/kiosk_user/tracktion_engine/modules/tracktion_graph/tracktion_graph.h:81,
                 from /home/kiosk_user/tracktion_engine/build/examples/Benchmarks/Benchmarks_artefacts/JuceLibraryCode/JuceHeader.h:29:
/home/kiosk_user/tracktion_engine/modules/tracktion_graph/../3rd_party/rigtorp/MPMCQueue.h: At global scope:
/home/kiosk_user/tracktion_engine/modules/tracktion_graph/../3rd_party/rigtorp/MPMCQueue.h:45:10: warning: use of 'std::hardware_destructive_interference_size' [-Winterference-size]
   45 |     std::hardware_destructive_interference_size;
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/kiosk_user/tracktion_engine/modules/tracktion_graph/../3rd_party/rigtorp/MPMCQueue.h:45:10: note: its value can vary between compiler versions or with different '-mtune' or '-mcpu' flags
/home/kiosk_user/tracktion_engine/modules/tracktion_graph/../3rd_party/rigtorp/MPMCQueue.h:45:10: note: if this use is part of a public ABI, change it to instead use a constant variable you define
/home/kiosk_user/tracktion_engine/modules/tracktion_graph/../3rd_party/rigtorp/MPMCQueue.h:45:10: note: the default value for the current CPU tuning is 256 bytes
/home/kiosk_user/tracktion_engine/modules/tracktion_graph/../3rd_party/rigtorp/MPMCQueue.h:45:10: note: you can stabilize this value with '--param hardware_destructive_interference_size=256', or disable this warning with '-Wno-interference-size'
/home/kiosk_user/tracktion_engine/modules/tracktion_engine/../3rd_party/crill/impl/progressive_backoff_wait_impl.h: In instantiation of 'void crill::impl::progressive_backoff_wait_armv8(Predicate&&) [with long unsigned int N0 = 2; long unsigned int N1 = 750; Predicate = crill::spin_mutex::lock()::<lambda()>]':
/home/kiosk_user/tracktion_engine/modules/tracktion_engine/../3rd_party/crill/progressive_backoff_wait.h:39:49:   required from 'void crill::progressive_backoff_wait(Predicate&&) [with Predicate = spin_mutex::lock()::<lambda()>]'
/home/kiosk_user/tracktion_engine/modules/tracktion_engine/../3rd_party/crill/spin_mutex.h:40:33:   required from here
/home/kiosk_user/tracktion_engine/modules/tracktion_engine/../3rd_party/crill/impl/progressive_backoff_wait_impl.h:80:22: error: '__wfe' was not declared in this scope
   80 |                 __wfe();
      |                 ~~~~~^~
make[2]: *** [examples/Benchmarks/CMakeFiles/Benchmarks.dir/build.make:80: examples/Benchmarks/CMakeFiles/Benchmarks.dir/Benchmarks.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:271: examples/Benchmarks/CMakeFiles/Benchmarks.dir/all] Error 2
make: *** [Makefile:146: all] Error 2

Is there a fix to this? if so then i have failed to find it online.
any help/explanation is greatly appreciated!

2

You’ve correctly changed -march=native but it looks like you’re using GCC 10?

Can you update to at least 11? That’s what we build Waveform on Pi with.

3

I have updated gcc to version 12.2 but i keep getting the exact same error. Do i need to configure Make to use GCC 12?

4

Possibly, it depends how you updated gcc.
Look at the cmake log file, it should say what version of gcc it’s detected near the start.

I think it’s the same as you’d get from typing gcc -version from the terminal.

You usually set the compiler to use by setting env vars before calling cmake:

export CC=/usr/bin/gcc-11
export CXX=/usr/bin/g++-11
5

The CMakeOutput.log file in tracktion_engine/build/CMakeFiles says

gcc version 12.2.0 (Debian 12.2.0-14)
...
GNU C17 (Debian 12.2.0-14) version 12.2.0 (aarch64-linux-gnu)
	compiled by GNU C version 12.2.0, GMP version 6.2.1, MPFR version 4.1.1-p1, MPC version 1.3.1, isl version isl-0.25-GMP

so it seems to me that it uses gcc 12.2. Whole file here. gcc -version returns the same.

export CC=/usr/bin/gcc-12 export CXX=/usr/bin/g+±12

didnt change anything.
Running

make CC=/usr/bin/gcc-12 CXX=/usr/bin/g+±12

doesnt work either.

6

I’ve just checked out logs and we actually use Clang 14.0.6 on Pi.
I’m not quite sure why though, @RolandMR set our Pi up for us. Maybe he can comment in case he’s seen this?

1 Like
7

I was running into the same issues myself. Turned out that the sandybridge error was coming from trying to build the Benchmarks example which I don’t think is entirely necessary. When I just ran make -j4 Modules DemoRunner it finally worked. Hope this helps!

8

sandy bridge I believe is a micro-architecture on intel x86, and the pi is gonna be arm so to compile I’d guess you would need to detect the architecture in cmake.

9

That’s what the above should do.