thirdparty-linuxmusl-aarch64 unable to properly compile binaries

[NovaAndrom3da]

Initial V compilation:

$ make
cd ./vc && git clean -xf && git pull --quiet
make fresh_tcc
make[1]: Entering directory '/home/hybris/v'
rm -rf ./thirdparty/tcc
git clone --filter=blob:none --quiet --branch thirdparty-linuxmusl-aarch64 https://github.com/vlang/tccbin ./thirdparty/tcc
remote: Enumerating objects: 24, done.
remote: Counting objects: 100% (13/13), done.
remote: Compressing objects: 100% (13/13), done.
remote: Total 24 (delta 0), reused 0 (delta 0), pack-reused 11 (from 1)
Receiving objects: 100% (24/24), 2.17 MiB | 10.23 MiB/s, done.
make[1]: Leaving directory '/home/hybris/v'
cd ./thirdparty/tcc && git clean -xf && git pull --quiet
clang -std=c99 -w -o v1 ./vc/v.c -lm -lpthread || cmd/tools/cc_compilation_failed_non_windows.sh
./v1 -no-parallel -o v2   cmd/v
./v2 -nocache -o ./v   cmd/v
rm -rf v1 v2
================== C compilation error (from tcc): ==============
cc: tcc: error: undefined symbol '__data_start'
=================================================================
Try passing `-g` when compiling, to see a .v file:line information, that correlates more with the C error.
(Alternatively, pass `-show-c-output`, to print the full C error message).
builder error: 
==================
C error found while compiling generated C code.
This can be caused by invalid C interop code, C compiler flags, or a V compiler bug.
If your code is pure V and this still happens, please report it using `v bug file.v`,
or goto https://github.com/vlang/v/issues/new/choose .
You can also use #help on Discord: https://discord.gg/vlang .
make: *** [GNUmakefile:129: all] Error 1

$ ./v cmd/tools/detect_tcc.v -show-c-output
======== Output of the C Compiler (/home/hybris/v/thirdparty/tcc/tcc.exe) ========
tcc: error: undefined symbol '__data_start'
==================================================================================
======== Output of the C Compiler (cc) ========
aarch64-chimera-linux-musl-ld: error: undefined symbol: __data_start
>>> referenced by gc.c
>>>               gc.o:(GC_register_data_segments) in archive /home/hybris/v/thirdparty/tcc/lib/libgc.a
>>> referenced by gc.c
>>>               gc.o:(GC_register_data_segments) in archive /home/hybris/v/thirdparty/tcc/lib/libgc.a
>>> referenced by gc.c
>>>               gc.o:(GC_stopped_mark) in archive /home/hybris/v/thirdparty/tcc/lib/libgc.a
>>> referenced 1 more times
cc: error: linker command failed with exit code 1 (use -v to see invocation)
===============================================

BTW, V and TCC work just fine with the same OS on x86_64.

[JalonSolov]

Try compiling with -gc vgc. This will at least try to use the pure V gc (new and experimental). It would be interesting to know if it worked for you.

[NovaAndrom3da]

@JalonSolov Yes, that works! Thank you!

Also, dunno if it's intended or not, but detect_tcc states TCC isn't used. cmd/tools/detect_tcc.v and .github/problem-matchers/register_all.vsh seem to work fine with vgc. Compile-time errors seem to be a bit misleading when compiling without -show-c-output but otherwise, this works!

Shows the error is in the header file for vgc_platform:

$ ./v -gc vgc run ~/solstice/src/
================== C compilation error (from tcc): ==============
cc: In file included from /tmp/v_10000/src.01KM9343SB9J6Q70K21VDX3DQX.tmp.c:605:
cc: /home/hybris/v/thirdparty/vgc/vgc_platform.h:22: error: ';' expected (got "int")
=================================================================
Try passing `-g` when compiling, to see a .v file:line information, that correlates more with the C error.
(Alternatively, pass `-show-c-output`, to print the full C error message).
builder error: 
==================
C error found while compiling generated C code.
This can be caused by invalid C interop code, C compiler flags, or a V compiler bug.
If your code is pure V and this still happens, please report it using `v bug file.v`,
or goto https://github.com/vlang/v/issues/new/choose .
You can also use #help on Discord: https://discord.gg/vlang .

The actual error:

$ ./v -gc vgc -show-c-output run ~/solstice/src/
======== Output of the C Compiler (/home/hybris/v/thirdparty/tcc/tcc.exe) ========
In file included from /tmp/v_10000/src.01KM939BEVKG7K3XQGZ7T5ETCR.tmp.c:605:
/home/hybris/v/thirdparty/vgc/vgc_platform.h:22: error: ';' expected (got "int")
==================================================================================
======== Output of the C Compiler (cc) ========
/tmp/v_10000/src.01KM939BEVKG7K3XQGZ7T5ETCR.tmp.c:6624:15: error: incompatible pointer to integer conversion assigning to 'int' from 'EGLConfig' (aka 'void *') [-Wint-conversion]
 6624 |                         egl_config = (*(C__EGLConfig*)builtin__array_get(egl_configs, i));
      |                                    ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/tmp/v_10000/src.01KM939BEVKG7K3XQGZ7T5ETCR.tmp.c:6641:60: error: incompatible integer to pointer conversion passing 'int' to parameter of type 'EGLConfig' (aka 'void *') [-Wint-conversion]
 6641 |         C__EGLContext egl_context = eglCreateContext(egl_display, egl_config, EGL_NO_CONTEXT, egl_context_attribs.data);
      |                                                                   ^~~~~~~~~~
/usr/include/EGL/egl.h:133:75: note: passing argument to parameter 'config' here
  133 | EGLAPI EGLContext EGLAPIENTRY eglCreateContext (EGLDisplay dpy, EGLConfig config, EGLContext share_context, const EGLint *attrib_list);
      |                                                                           ^
2 errors generated.
===============================================
No such file or directory; code: 2

[JalonSolov]

Since vgc is still experimental, it's good to know that it at least tried to work for you.

Unfortunately, someone will need to investigate the remaining issues, though I'm not sure who can... I don't know of anyone else with the same setup.

Perhaps someone can get something running either in a docker image or a vm. Can you provide details such as which version of Linux, etc.?