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This repository was archived by the owner on Nov 26, 2025. It is now read-only.
translate-c unhappy when building outside source directory #47
Description
Zig Version
0.14.0
Steps to Reproduce and Observed Behavior
$ git clone https://gist.github.com/jburgy/081992ed24df120cd2edde6e56346371
$ cd 081992ed24df120cd2edde6e56346371/
$ zig build
$ PYTHONPATH=zig-out/lib /opt/python/3.13.0/bin/python3 -c "import libext"
$ echo $?
0Everything works as expected in the happy path above. However, if you do
$ mkdir ../scratch
$ cd ../scratch
$ zig build --build-file ../081992ed24df120cd2edde6e56346371/build.zigyou'll get error: failed to check cache: '../081992ed24df120cd2edde6e56346371/.zig-cache/o/4e4e86279020dbd67ed90b5b94e6e6ba/py.zig' file_hash FileNotFound. Not only does py.zig not exist, its parent (4e4e86279020dbd67ed90b5b94e6e6ba/) does not exist either
Expected Behavior
zig translate-c should write its output to a file regardless of in what folder zig build is run
Activity
jburgy commentedon Jul 11, 2025
See https://discord.com/channels/605571803288698900/1393290799684390962 for context as to why
zig buildruns outside the source rootjburgy commentedon Jul 12, 2025
Should this be blocking ziglang/zig#20630?
Vexu commentedon Jul 12, 2025
No, your example works as expected when using https://github.com/ziglang/translate-c.
jburgy commentedon Jul 12, 2025
Not sure I follow that statement. Am I not using
ziglang/translate-cwhen I doscratch$ zig build --build-file ../081992ed24df120cd2edde6e56346371/build.zig --verbose /opt/zig-linux-x86_64-0.14.0/zig translate-c -lc --listen=- -I /opt/python/3.13.0/include/python3.13 ../081992ed24df120cd2edde6e56346371/py.h CLICOLOR_FORCE=1 pkg-config --list-all /opt/zig-linux-x86_64-0.14.0/zig build-lib -lpython3.13 -ODebug -L /opt/python/3.13.0/lib --dep py -Mroot=../081992ed24df120cd2edde6e56346371/root.zig -ODebug -Mpy=../081992ed24df120cd2edde6e56346371/.zig-cache/o/4e4e86279020dbd67ed90b5b94e6e6ba/py.zig -lc --cache-dir ../081992ed24df120cd2edde6e56346371/.zig-cache --global-cache-dir /home/jburgy/.cache/zig --name ext -dynamic --zig-lib-dir /opt/zig-linux-x86_64-0.14.0/lib/ --listen=- install └─ install ext └─ zig build-lib ext Debug native 1 errors error: failed to check cache: '../081992ed24df120cd2edde6e56346371/.zig-cache/o/4e4e86279020dbd67ed90b5b94e6e6ba/py.zig' file_hash FileNotFound(I should also mention that the problem goes away when I use
@cImportinstead of an explicitpy.hand.addTranslateCinbuild.zig)Vexu commentedon Jul 12, 2025
Not yet, that's why the issue is open.