undefined references in bootstrap build of 0.13

[themaddoctor]

Zig Version

zig-bootstrap-0.13.0

Steps to Reproduce and Observed Behavior

tar -xf zig-bootstrap-0.13.0.tar.xz cd zig-bootstrap-0.13.0 PATH=/opt/gcc-14.1.0/bin:$PATH LD_LIBRARY_PATH=/opt/gcc-14.1.0/lib64 ./build x86_64-linux-gnu x86_64 ... [ 84%] Building C object CMakeFiles/zig2.dir/zig2.c.o [ 89%] Building C object CMakeFiles/zig2.dir/compiler_rt.c.o [ 94%] Linking CXX executable zig2 /usr/bin/ld: CMakeFiles/zig2.dir/zig2.c.o: in function posix_getrandom__2384': zig2.c:(.text+0x5ba80a): undefined reference to getrandom' /usr/bin/ld: CMakeFiles/zig2.dir/zig2.c.o: in function posix_copy_file_range__2600': zig2.c:(.text+0x6046f7): undefined reference to copy_file_range' collect2: error: ld returned 1 exit status CMakeFiles/zig2.dir/build.make:1126: recipe for target 'zig2' failed make[2]: *** [zig2] Error 1 CMakeFiles/Makefile2:117: recipe for target 'CMakeFiles/zig2.dir/all' failed make[1]: *** [CMakeFiles/zig2.dir/all] Error 2 Makefile:135: recipe for target 'all' failed make: *** [all] Error 2

Expected Behavior

successful build?

[alexrp]

Try x86_64-linux-gnu.2.24 instead, or whatever glibc version you actually have. Zig defaults to 2.28, which has both of those functions.

[themaddoctor]

Thank you, but that did not change the result.

I tried defining getrandom() and file_copy_range() and adding the object files to out/build-zig-host/CMakeFiles/zig2.dir/link.txt and rerunning the build command, but it overwrote link.txt and still failed.

Where are these two files called in the source tree? Maybe I can fix them instead.

[themaddoctor]

I removed the prototypes for external getrandom() and copy_file_range(). I set the value of posix_copy_file_range_global_has_copy_file_range__66093 to false. I replaced the calls to getrandom() and copy_file_range() with zeroes. For getrandom(), there is a switch that falls back to getting entropy from /dev/urandom, and it does not complain. For copy_file_range(), I am hoping there is something similar.

zig2 compiled and linked.

But... when I try to build the hello-world program with zig2, it goes into an infinite loop and prints Semantic Analysis zig_libc Code Generation over and over. LD_LIBRARY_PATH=/opt/gcc-14.1.0/lib64 ./zig2 run --zig-lib-dir /sources/zig/zig-bootstrap-0.13.0/zig/lib hello.zig

The main build says that it is building stage 3, but gives no indication that it is not also in this infinite loop.

Any ideas? Thank you.

[TobyBrull]

Having the same issue. Building with

rm -rf build/ && cmake -S. -Bbuild/ -DCMAKE_EXPORT_COMPILE_COMMANDS=On -DCMAKE_BUILD_TYPE=Debug -DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++ -GNinja -DCLANG_INCLUDE_DIRS=/home/toby/micromamba/envs/for-zig/ && ninja -Cbuild/

in a dedicated conda env on WSL.

FAILED: zig2
: && /home/toby/micromamba/envs/for-zig/bin/g++ -g -Wl,-z,stack-size=0x10000000 CMakeFiles/zig2.dir/zig2.c.o CMakeFiles/zig2.dir/compiler_rt.c.o -o zig2  zigcpp/libzigcpp.a  /home/toby/micromamba/envs/for-zig/lib/libclang-cpp.so.19.1  /home/toby/micromamba/envs/for-zig/lib/liblldMinGW.a  /home/toby/micromamba/envs/for-zig/lib/liblldELF.a  /home/toby/micromamba/envs/for-zig/lib/liblldCOFF.a  /home/toby/micromamba/envs/for-zig/lib/liblldWasm.a  /home/toby/micromamba/envs/for-zig/lib/liblldMachO.a  /home/toby/micromamba/envs/for-zig/lib/liblldCommon.a  -lLLVM-19  -lrt  -ldl  -lpthread  -lm  -lz  -lzstd  -lxml2  -lpthread  -lm  -lz  -lzstd  -lxml2 && :
/home/toby/micromamba/envs/for-zig/bin/../lib/gcc/x86_64-conda-linux-gnu/14.2.0/../../../../x86_64-conda-linux-gnu/bin/ld: CMakeFiles/zig2.dir/zig2.c.o: in function `posix_getrandom__2630':
/home/toby/git/zig/build/zig2.c:722471:(.text+0x47efee): undefined reference to `getrandom'
/home/toby/micromamba/envs/for-zig/bin/../lib/gcc/x86_64-conda-linux-gnu/14.2.0/../../../../x86_64-conda-linux-gnu/bin/ld: CMakeFiles/zig2.dir/zig2.c.o: in function `posix_copy_file_range__2848':
/home/toby/git/zig/build/zig2.c:752526:(.text+0x4cc40d): undefined reference to `copy_file_range'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.