macOS: can’t build after 15.4.1

[greatgitsby]

https://github.com/commaai/openpilot/pull/35104 fixes the build. but, before modifying, need to understand why gcc-13 is needed here

thought process: fake_stm.h imports stdio.h -> uses Xcode's stdio -> needs clang to compile it correctly.

---

Describe the bug

tools/op.sh setup && tools/op.sh build

no longer builds. will attach stack trace. initial deep dive shows that switching to clang for failing file compilations works.

OS Version

macOS 15.4.1

openpilot version or commit

master

Additional info

GH actions run with runner macos-15: https://github.com/commaai/openpilot/actions/runs/14777702991/job/41489546036

one problematic file:

$ gcc-13 -o panda/tests/libpanda/panda.os -c -nostdlib -fno-builtin -std=gnu11 -Wfatal-errors -Wno-pointer-to-int-cast -fPIC -Ipanda/tests/libpanda -Ipanda/board -Iopendbc/safety panda/tests/libpanda/panda.c

In file included from /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/_stdio.h:71,
                 from /opt/homebrew/Cellar/gcc@13/13.3.0/lib/gcc/13/gcc/aarch64-apple-darwin24/13/include-fixed/stdio.h:75,
                 from panda/board/fake_stm.h:2,
                 from panda/tests/libpanda/panda.c:1:
/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/_stdio.h: In function 'fmemopen':
/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/_stdio.h:457:107: error: expected declaration specifiers before '__API_AVAILABLE_GET_MACRO_93585900'
  457 | FILE *fmemopen(void * __restrict __buf _LIBC_SIZE(__size), size_t __size, const char * __restrict __mode) __API_AVAILABLE(macos(10.13), ios(11.0), tvos(11.0), watchos(4.0));
      |                                                                                                           ^~~~~~~~~~~~~~~
compilation terminated due to -Wfatal-errors.

compiling with clang instead works:

$ clang -o panda/tests/libpanda/panda.os -c -nostdlib -fno-builtin -std=gnu11 -Wfatal-errors -Wno-pointer-to-int-cast -fPIC -Ipanda/tests/libpanda -Ipanda/board -Iopendbc/safety panda/tests/libpanda/panda.c

[lara105]

This is the error i get:

scons: Reading SConscript files ... scons: done reading SConscript files. scons: Building targets ... gcc-13 -o opendbc_repo/opendbc/safety/tests/libsafety/safety.os -c -Wall -Wextra -Werror -nostdlib -fno-builtin -std=gnu11 -Wfatal-errors -Wno-pointer-to-int-cast -fPIC -Iopendbc_repo/opendbc/safety/tests/libsafety -Iopendbc_repo/opendbc/safety/board -Iopendbc_repo/opendbc/safety opendbc_repo/opendbc/safety/tests/libsafety/safety.c In file included from opendbc_repo/opendbc/safety/board/fake_stm.h:2, from opendbc_repo/opendbc/safety/tests/libsafety/safety.c:3: /opt/homebrew/Cellar/gcc@13/13.3.0/lib/gcc/13/gcc/aarch64-apple-darwin24/13/include-fixed/stdio.h:75:10: fatal error: _stdio.h: No such file or directory 75 | #include <_stdio.h> | ^~~~~~~~~~ compilation terminated. scons: *** [opendbc_repo/opendbc/safety/tests/libsafety/safety.os] Error 1 arm-none-eabi-objcopy -O binary panda/board/jungle/obj/bootstub.panda_jungle_h7.elf panda/board/jungle/obj/bootstub.panda_jungle_h7.bin scons: building terminated because of errors.

[greatgitsby]

CI is on macos-latest for GH runners. no issue on this version. can be reproduced in CI if macos-15 runner is used. it is on 15.4.1.

https://github.com/actions/runner-images/blob/main/images/macos/macos-15-Readme.md

[greatgitsby]

@phoenixs3 your issue is separate, try uninstalling gcc@13 and gcc-arm-embedded, installing them again, and seeing if you see the stacktrace i attached in the description.

source: https://stackoverflow.com/a/35097817

[devtekve]

FYI https://discord.com/channels/469524606043160576/1362735424644055230

[devtekve]

Actually, it's 2 different issues. But they happened after 15.4. Models can't be compiled on tinygrad for me

[lara105]

@phoenixs3 your issue is separate, try uninstalling gcc@13 and gcc-arm-embedded, installing them again, and seeing if you see the stacktrace i attached in the description.

source: https://stackoverflow.com/a/35097817

I tried re-installing them with no change in the stack trace - do you know what i am doing wrong?

[greatgitsby]

working build: https://github.com/commaai/openpilot/pull/35104 -> https://github.com/commaai/openpilot/actions/runs/14798102212/job/41550115527

[greatgitsby]

still two PRs outstanding to fix this, can we reopen the issue? (probably was auto-closed)

https://github.com/commaai/opendbc/pull/2180 https://github.com/commaai/openpilot/pull/35104