Zig errors on not finding c header files, but works if the include path parameter is after --mod param in cli

[akhildevelops]

Zig Version

0.12.0-dev.2059+42389cb9c

Steps to Reproduce and Observed Behavior

While running below test command (that's the default test command created by buiild_runner), there's a compiler error on not finding header files.

/home/akhil/.config/Code/User/globalStorage/ziglang.vscode-zig/zig_install/zig test \
    -lcuda -lnvrtc \
    -I /usr/local/cuda/include -L /usr/local/cuda/lib64 \
    --dep cudaz --mod root /home/akhil/practice/cudaz/test/general.zig \
    --mod cudaz /home/akhil/practice/cudaz/src/lib.zig \
    -lc \
    --cache-dir /home/akhil/practice/cudaz/zig-cache --global-cache-dir /home/akhil/.cache/zig \
    --name test

Output:

src/c.zig:1:18: error: C import failed
pub const cuda = @cImport({
                 ^~~~~~~~
referenced by:
    cuda: src/error.zig:5:15
    CudaErrorEnum: src/error.zig:10:47
    remaining reference traces hidden; use '-freference-trace' to see all reference traces
/home/akhil/practice/cudaz/zig-cache/o/d41127f1c4e1cd6955c7dad1694f4c1c/cimport.h:1:10: error: 'cuda.h' file not found
#include <cuda.h>
         ^
src/c.zig:7:19: error: C import failed
pub const nvrtc = @cImport(@cInclude("nvrtc.h"));
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/akhil/practice/cudaz/zig-cache/o/841287f7c59616b0e1de04edb366cdad/cimport.h:1:10: error: 'nvrtc.h' file not found
#include <nvrtc.h>

If -I /usr/local/cuda/include is rearanged then zig compiles and runs the test successfully

/home/akhil/.config/Code/User/globalStorage/ziglang.vscode-zig/zig_install/zig test \
    -lcuda -lnvrtc \
    -L /usr/local/cuda/lib64 \
    --dep cudaz --mod root /home/akhil/practice/cudaz/test/general.zig \
    -I /usr/local/cuda/include \
    --mod cudaz /home/akhil/practice/cudaz/src/lib.zig \
    -lc \
    --cache-dir /home/akhil/practice/cudaz/zig-cache --global-cache-dir /home/akhil/.cache/zig \
    --name test

Output:

All 8 tests passed.

Expected Behavior

Test should run without compile errors.

[akhildevelops]

I was including paths for both test and module, removing for test resolved the issue.

[akhildevelops]

zig/lib/std/Build/Step/Compile.zig

Line 1466 in 804cee3

// -I and -L arguments that appear after the last --mod argument apply to all modules.

This helped me to understand how -I param interact with modules.