MI6&termux&clang-16 build failed

[HKL-Kevin]

make -j8
[ 50%] Built target tini
[ 75%] Linking C executable tini-static
ld.lld: error: unable to find library -lc
clang-16: error: linker command failed with exit code 1 (use -v to see invocation)
make[2]: *** [CMakeFiles/tini-static.dir/build.make:97: tini-static] Error 1
make[1]: *** [CMakeFiles/Makefile2:111: CMakeFiles/tini-static.dir/all] Error 2
make: *** [Makefile:156: all] Error 2

[krallin]

I think you'd have to give a little more in the way of repro instructions here. Looks like you don't have a libc the linker can find? You'll need to install one

[imwints]

Observing the same issue

[1/4] /usr/lib/llvm/16/bin/clang  -I/var/tmp/portage/sys-process/tini-0.19.0-r1/work/tini-0.19.0_build  -O2 -pipe -march=native -flto=thin -std=gnu99 -Wextra -Wall -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -MD -MT CMakeFiles/tini.dir/src/tini.c.o -MF CMakeFiles/tini.dir/src/tini.c.o.d -o CMakeFiles/tini.dir/src/tini.c.o -c /var/tmp/portage/sys-process/tini-0.19.0-r1/work/tini-0.19.0/src/tini.c
[2/4] /usr/lib/llvm/16/bin/clang  -I/var/tmp/portage/sys-process/tini-0.19.0-r1/work/tini-0.19.0_build  -O2 -pipe -march=native -flto=thin -std=gnu99 -Wextra -Wall -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -MD -MT CMakeFiles/tini-static.dir/src/tini.c.o -MF CMakeFiles/tini-static.dir/src/tini.c.o.d -o CMakeFiles/tini-static.dir/src/tini.c.o -c /var/tmp/portage/sys-process/tini-0.19.0-r1/work/tini-0.19.0/src/tini.c
[3/4] : && /usr/lib/llvm/16/bin/clang -O2 -pipe -march=native -flto=thin -std=gnu99 -Wextra -Wall -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wl,--as-needed -Wl,-Bsymbolic-functions -Wl,-z,relro     -rdynamic CMakeFiles/tini.dir/src/tini.c.o -o tini   && :
[4/4] : && /usr/lib/llvm/16/bin/clang -O2 -pipe -march=native -flto=thin -std=gnu99 -Wextra -Wall -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wl,--as-needed -Wl,-Bsymbolic-functions -Wl,-z,relro     -rdynamic -Wl,--no-export-dynamic -static CMakeFiles/tini-static.dir/src/tini.c.o -o tini-static   && :
FAILED: tini-static
: && /usr/lib/llvm/16/bin/clang -O2 -pipe -march=native -flto=thin -std=gnu99 -Wextra -Wall -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wl,--as-needed -Wl,-Bsymbolic-functions -Wl,-z,relro     -rdynamic -Wl,--no-export-dynamic -static CMakeFiles/tini-static.dir/src/tini.c.o -o tini-static   && :
ld.lld: error: undefined symbol: __unordtf2
>>> referenced by printf_fphex.c:123 (../stdio-common/printf_fphex.c:123)
>>>               printf_fphex.o:(__printf_fphex_buffer) in archive /usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../lib64/libc.a
>>> referenced by printf_fphex.c:123 (../stdio-common/printf_fphex.c:123)
>>>               printf_fphex.o:(__printf_fphex_buffer) in archive /usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../lib64/libc.a
>>> referenced by printf_fp.c:222 (/var/tmp/portage/sys-libs/glibc-2.37-r3/work/glibc-2.37/stdio-common/printf_fp.c:222)
>>>               printf_fp.o:(__printf_fp_buffer_1.isra.0) in archive /usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../lib64/libc.a
>>> referenced 1 more times

ld.lld: error: undefined symbol: __letf2
>>> referenced by printf_fphex.c:123 (../stdio-common/printf_fphex.c:123)
>>>               printf_fphex.o:(__printf_fphex_buffer) in archive /usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../lib64/libc.a
>>> referenced by printf_fp.c:222 (/var/tmp/portage/sys-libs/glibc-2.37-r3/work/glibc-2.37/stdio-common/printf_fp.c:222)
>>>               printf_fp.o:(__printf_fp_buffer_1.isra.0) in archive /usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../lib64/libc.a
clang-16: error: linker command failed with exit code 1 (use -v to see invocation)
ninja: build stopped: subcommand failed.

https://discourse.llvm.org/t/compiler-rt-with-soft-float-support/4936
https://discourse.llvm.org/t/static-linking-with-compiler-rt-and-libc-2-31-does-not-work/4960
seem to be related.

Statically linking glibc with clang is currently not possible