Re: Problem with cc in native build

On Sat, 14 Jun 2025 12:50:11 +0200
Michael Tuexen <tuexen@FreeBSD.org> wrote:

> > On 14. Jun 2025, at 11:29, Milan Obuch <freebsd-riscv@dino.sk>
> > wrote:
> > 
> > Hi,
> > 
> > I did native build on Star64, but there is something wrong with cc
> > binary generated.
> > 
> > I started with sme snapshot from ftp.freebsd.org, then I did all the
> > usual steps (make buildworld, make buildkernel, make installkernel,
> > make installworld), as I do on other systems when doing full source
> > based upgrade.
> > 
> > That seemingly went OK, I can boot newly boot system and check
> > devices, interfaces,files, etc. Now, I tried another buildkernel to
> > test some changes, but that failed. The error was (at stage 3.1:
> > building everything, on first cc invocation)
> > 
> > cc -target riscv64-unknown-freebsd15.0
> > --sysroot=/usr/obj/usr/src/riscv.riscv64/tmp
> > -B/usr/obj/usr/src/riscv.riscv64/tmp/usr/bin -c -O2 -pipe
> > -fno-strict-aliasing -g -nostdinc -I. -I/usr/src/sys
> > -I/usr/src/sys/contrib/ck/include -I/usr/src/sys/contrib/libfdt
> > -I/usr/src/sys/contrib/device-tree/include -D_KERNEL
> > -DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h -fPIE
> > -fno-omit-frame-pointer -fno-optimize-sibling-calls -MD
> > -MF.depend.genoffset.o -MTgenoffset.o
> > -fdebug-prefix-map=./machine=/usr/src/sys/riscv/include
> > -march=rv64imafdch -mabi=lp64 -mno-relax -ffreestanding -fwrapv
> > -fstack-protector -gdwarf-4 -Wall -Wstrict-prototypes
> > -Wmissing-prototypes -Wpointer-arith -Wcast-qual -Wundef
> > -Wno-pointer-sign -D__printf__=__freebsd_kprintf__
> > -Wmissing-include-dirs -fdiagnostics-show-option
> > -Wno-unknown-pragmas -Wswitch -Wno-error=tautological-compare
> > -Wno-error=empty-body -Wno-error=parentheses-equality
> > -Wno-error=unused-function -Wno-error=pointer-sign
> > -Wno-error=shift-negative-value -Wno- address-of-packed-member
> > -Wno-format-zero-length -mcmodel=medium -std=gnu17  -fcommon
> > /usr/src/sys/kern/genoffset.c error: unable to create target: 'No
> > available targets are compatible with triple
> > "riscv64-unknown-freebsd15.0"' 1 error generated. *** Error code 1
> > 
> > I do not understand the issue, but trying
> > 
> > # cc -print-target-triple
> > riscv64-unknown-freebsd15.0
> > 
> > looks OK, however
> > 
> > # cc -print-targets
> > 
> >  Registered Targets:
> >    arm     - ARM
> >    armeb   - ARM (big endian)
> >    thumb   - Thumb
> >    thumbeb - Thumb (big endian)
> > 
> > probably means cc as built cannot actually compile for riscv arch...
> > 
> > Did anybody tried building FreeBSD natively on some RiscV platform?
> > I think this is some kind of oversight in build process, but really
> > fatal one...  
> I am building FreeBSD on a RiscV board (HiFive Unmatched Rev B). The
> last time a month ago or so.
> I get
> tuexen@riscv:~ % cc -print-target-triple
> riscv64-unknown-freebsd15.0
> tuexen@riscv:~ % cc -print-targets
> 
>   Registered Targets:
>     aarch64    - AArch64 (little endian)
>     aarch64_32 - AArch64 (little endian ILP32)
>     aarch64_be - AArch64 (big endian)
>     arm        - ARM
>     arm64      - ARM64 (little endian)
>     arm64_32   - ARM64 (little endian ILP32)
>     armeb      - ARM (big endian)
>     ppc32      - PowerPC 32
>     ppc32le    - PowerPC 32 LE
>     ppc64      - PowerPC 64
>     ppc64le    - PowerPC 64 LE
>     riscv32    - 32-bit RISC-V
>     riscv64    - 64-bit RISC-V
>     thumb      - Thumb
>     thumbeb    - Thumb (big endian)
>     x86        - 32-bit X86: Pentium-Pro and above
>     x86-64     - 64-bit X86: EM64T and AMD64
> 
> Let me trigger a new build.
>

Great. I did use sources from June 1st, git hash 66c2e68076bd.

But I just found the issue... My /etc/src.conf is the culprit, I
mistakenly put there some WITHOUT_LLVM_TARGET knobs, so consider this a
pilot error. Shame on me :( I should know better, but this was my first
non-x86 build after long time.

Now if I could fix it without full reinstall and rebuild...

Regards,
Milan