Re: Reduced reproduction of games/libretro-beetle_psx 's armv7 build failure

On 2022-Aug-22, at 11:30, Mark Millard <[email protected]> wrote:

> games/libretro-beetle_psx built for armv7 uses its jit_arm*.c
> code. The below is a simplification of the context for the
> later shown build failure log file from the FreeBSD package
> build servers:
> 
> # more libretro-beetle_psx_build_failure_reduction.c 
> extern float    __addsf3(float, float);
> extern double   __adddf3(double, double);

Investigative activity after an off-list message lead to me
to discover that the above 2 are not from the likes of:

Run-time ABI for the Arm® Architecture

but are instead from the likes of:

https://gcc.gnu.org/onlinedocs/gccint/Soft-float-library-routines.html#Soft-float-library-routines

associated with what the gcc folks sometimes have in
libgcc.a or libgcc_s.so.1 . (The subset varies by
architecture from what I've seen.)

> int main()
> {
>    (void)__addsf3(0, 0);
>    (void)__adddf3(0, 0);
> }
> 
> # cc libretro-beetle_psx_build_failure_reduction.c
> ld: error: undefined symbol: __addsf3
>>>> referenced by libretro-beetle_psx_build_failure_reduction.c
>>>>              /tmp/libretro-beetle_psx_build_failure_reduction-e3ff6d.o:(main)
> 
> ld: error: undefined symbol: __adddf3
>>>> referenced by libretro-beetle_psx_build_failure_reduction.c
>>>>              /tmp/libretro-beetle_psx_build_failure_reduction-e3ff6d.o:(main)
>>>> did you mean: __adddi3
>>>> defined in: /lib/libc.so.7
> cc: error: linker command failed with exit code 1 (use -v to see invocation)

The same goes for trying allowing the use of libgcc_s.so.1
to supply definitions:

# cc -lgcc_s libretro-beetle_psx_build_failure_reduction.c
ld: error: undefined symbol: __addsf3
>>> referenced by libretro-beetle_psx_build_failure_reduction.c
>>>               /tmp/libretro-beetle_psx_build_failure_reduction-fefae9.o:(main)

ld: error: undefined symbol: __adddf3
>>> referenced by libretro-beetle_psx_build_failure_reduction.c
>>>               /tmp/libretro-beetle_psx_build_failure_reduction-fefae9.o:(main)
>>> did you mean: __adddi3
>>> defined in: /lib/libc.so.7
cc: error: linker command failed with exit code 1 (use -v to see invocation)

> An recent example of the build failure on the FreeBSD package
> builder servers is:
> 
> http://ampere2.nyi.freebsd.org/data/main-armv7-default/p85ef7d020401_s0fd8d3589/logs/errors/libretro-beetle_psx-0.20220211_1.log
> 
> There may be other examples than __addsf3 and __adddf3 (in
> other software?). It seems there must not be a (complete)
> test for the coverage of such things.
> 
> That same reduced-problem source (by content) builds for
> aarch64 and runs fine on aarch64.
> 
> There are more issues with missing math routines vs. the lang/gcc*
> code generation --on aarch64 as well. But the above sticks to
> system-clang's toolchain as a context.

It seems that, despite no direct use of lang/gcc* , I'd
wondered into an example of use of gcc* related definitions,
where FreeBSD does not have the 2 math routines covered
for armv7 (but does for aarch64).

> Note: I do not normally build games/libretro-beetle_psx and never
> use it. I got here from looking into a somewhat analogous failure
> and looking to find an official activity that was similar that I
> could reference.
> 



===
Mark Millard
marklmi at yahoo.com