# Cannot build with Rust on Windows **URL:** \ **Category:** mediasoup libraries\ **Created:** [February 8, 2023, 9:52pm UTC](https://mediasoup.discourse.group/t/cannot-build-with-rust-on-windows/4929 "2023-02-08T21:52:32Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![E-M-C](https://avatars.discourse-cdn.com/v4/letter/e/c67d28/32.png) [@E-M-C](https://mediasoup.discourse.group/u/E-M-C)\ **Post date:** [February 8, 2023, 9:52pm UTC](https://mediasoup.discourse.group/t/cannot-build-with-rust-on-windows/4929/1 "2023-02-08T21:52:33Z")
Hello, This happens specifically with Rust on Windows, I have all the requirements as I also tried with the npm package, which compiles with no issues. edit: I still had to call “C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvars64.bat” in a cmd and reuse that cmd before building, otherwise npm install would fail Tested on different machines with W10 and W11 with exact same result Here is the full stacktrace I get ```auto Found ninja.exe-1.10.2.git.kitware.jobserver-1 at C:/Users/jeje_/Desktop/Vox-2.0/server/target/debug/build/mediasoup-sys-c89d62f62e531964/out/out/pip/bin/ninja.exe WARNING: msvc does not support C++11; attempting best effort; setting the standard to C++14 --- stderr Usage: c:\Users\jeje_\AppData\Local\Programs\Python\Python311\python.exe -m pip install [options] [package-index-options] ... c:\Users\jeje_\AppData\Local\Programs\Python\Python311\python.exe -m pip install [options] -r [package-index-options] ... c:\Users\jeje_\AppData\Local\Programs\Python\Python311\python.exe -m pip install [options] [-e] ... c:\Users\jeje_\AppData\Local\Programs\Python\Python311\python.exe -m pip install [options] [-e] ... c:\Users\jeje_\AppData\Local\Programs\Python\Python311\python.exe -m pip install [options] ... no such option: --system Directory does not contain a valid build tree: C:\Users\jeje_\Desktop\Vox-2.0\server\target\debug\build\mediasoup-sys-c89d62f62e531964\out\out\Release\build /c/Users/jeje_/.cargo/registry/src/github.com-1ecc6299db9ec823/mediasoup-sys-0.5.4/scripts/cpu_cores.sh: line 9: nproc: command not found ninja: error: manifest 'build.ninja' still dirty after 100 tries "make": *** [libmediasoup-worker] Error 1 thread 'main' panicked at 'Failed to build libmediasoup-worker', C:\Users\jeje_\.cargo\registry\src\github.com-1ecc6299db9ec823\mediasoup-sys-0.5.4\build.rs:96:9 stack backtrace: 0: 0x7ff6ee0eb072 - std::backtrace_rs::backtrace::dbghelp::trace at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\..\..\backtrace\src\backtrace\dbghelp.rs:98 1: 0x7ff6ee0eb072 - std::backtrace_rs::backtrace::trace_unsynchronized at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\..\..\backtrace\src\backtrace\mod.rs:66 2: 0x7ff6ee0eb072 - std::sys_common::backtrace::_print_fmt at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\sys_common\backtrace.rs:65 3: 0x7ff6ee0eb072 - std::sys_common::backtrace::_print::impl$0::fmt at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\sys_common\backtrace.rs:44 4: 0x7ff6ee103d9b - core::fmt::write at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\core\src\fmt\mod.rs:1208 5: 0x7ff6ee0e77aa - std::io::Write::write_fmt at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\io\mod.rs:1682 6: 0x7ff6ee0eadbb - std::sys_common::backtrace::_print at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\sys_common\backtrace.rs:47 7: 0x7ff6ee0eadbb - std::sys_common::backtrace::print at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\sys_common\backtrace.rs:34 8: 0x7ff6ee0edb99 - std::panicking::default_hook::closure$1 at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\panicking.rs:267 9: 0x7ff6ee0ed81b - std::panicking::default_hook at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\panicking.rs:286 10: 0x7ff6ee0ee431 - std::panicking::rust_panic_with_hook at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\panicking.rs:688 11: 0x7ff6ee0ee17b - std::panicking::begin_panic_handler::closure$0 at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\panicking.rs:577 12: 0x7ff6ee0ebd6f - std::sys_common::backtrace::__rust_end_short_backtrace at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\sys_common\backtrace.rs:137 13: 0x7ff6ee0ede70 - std::panicking::begin_panic_handler at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\panicking.rs:575 14: 0x7ff6ee109ec5 - core::panicking::panic_fmt at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\core\src\panicking.rs:64 15: 0x7ff6ee0d82d5 - build_script_build::main at C:\Users\jeje_\.cargo\registry\src\github.com-1ecc6299db9ec823\mediasoup-sys-0.5.4\build.rs:96 16: 0x7ff6ee0d39db - core::ops::function::FnOnce::call_once > at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405\library\core\src\ops\function.rs:507 17: 0x7ff6ee0d535e - std::sys_common::backtrace::__rust_begin_short_backtrace > at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405\library\std\src\sys_common\backtrace.rs:121 18: 0x7ff6ee0d535e - std::sys_common::backtrace::__rust_begin_short_backtrace > at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405\library\std\src\sys_common\backtrace.rs:121 19: 0x7ff6ee0d7a41 - std::rt::lang_start::closure$0 > at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405\library\std\src\rt.rs:166 20: 0x7ff6ee0e437e - core::ops::function::impls::impl$2::call_once at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\core\src\ops\function.rs:606 21: 0x7ff6ee0e437e - std::panicking::try::do_call at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\panicking.rs:483 22: 0x7ff6ee0e437e - std::panicking::try at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\panicking.rs:447 23: 0x7ff6ee0e437e - std::panic::catch_unwind at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\panic.rs:137 24: 0x7ff6ee0e437e - std::rt::lang_start_internal::closure$2 at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\rt.rs:148 25: 0x7ff6ee0e437e - std::panicking::try::do_call at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\panicking.rs:483 26: 0x7ff6ee0e437e - std::panicking::try at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\panicking.rs:447 27: 0x7ff6ee0e437e - std::panic::catch_unwind at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\panic.rs:137 28: 0x7ff6ee0e437e - std::rt::lang_start_internal at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405/library\std\src\rt.rs:148 29: 0x7ff6ee0d7a1a - std::rt::lang_start > at /rustc/fc594f15669680fa70d255faec3ca3fb507c3405\library\std\src\rt.rs:165 30: 0x7ff6ee0d8dc9 - main 31: 0x7ff6ee10868c - invoke_main at D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:78 32: 0x7ff6ee10868c - __scrt_common_main_seh at D:\a\_work\1\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288 33: 0x7ff88f347614 - BaseThreadInitThunk 34: 0x7ff88f6226a1 - RtlUserThreadStart ``` From what I understand the pip error “no such option: --system” is normal on windows and does not prevent build… ? However “Directory does not contain a valid build tree:” seems to the critical issue, from what I could gather it’s related to meson Also not really sure about nproc ---
**Author:** ![E-M-C](https://avatars.discourse-cdn.com/v4/letter/e/c67d28/32.png) [@E-M-C](https://mediasoup.discourse.group/u/E-M-C)\ **Post date:** [February 12, 2023, 8:48am UTC](https://mediasoup.discourse.group/t/cannot-build-with-rust-on-windows/4929/2 "2023-02-12T08:48:34Z")
I tried investigating however I could. Ninja is unable to compile. ninja logs: ```auto # ninja log v5 1 7192 6978946387934553 build.ninja 5b15d53c9701d67a 1 6793 6978946387934553 build.ninja 5b15d53c9701d67a ``` It seems that meson is calling every few seconds this command: ```auto [0/1] "C:\Users\jeje_\Desktop\Vox-2.0\server\target\debug\build\mediasoup-sys-c89d62f62e531964\out\out\pip\bin\meson" "--internal" "regenerate" "C:\Users\jeje_\.cargo\registry\src\github.com-1ecc6299db9ec823\mediasoup-sys-0.5.4" "C:\Users\jeje_\Desktop\Vox-2.0\server\target\debug\build\mediasoup-sys-c89d62f62e531964\out\out\Release\build" "--backend" "ninja" ``` No error in the meson-logs.txt beyond the mention of the dirty build. I tried modifying the makefile in the registry crate to enable more verbose logging, but I was unsuccesful. (meson compile -C --verbose… ?) Any help would be appreciated. Thanks ---
**Author:** ![satoren](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/satoren/32/1249_2.png) [@satoren](https://mediasoup.discourse.group/u/satoren)\ **Post date:** [November 8, 2023, 8:25am UTC](https://mediasoup.discourse.group/t/cannot-build-with-rust-on-windows/4929/3 "2023-11-08T08:25:22Z")
Probably requires installation of unix compatible commands such as msys2 However, even after fixing this, I encountered a path limit error and I quickly gave up trying to solve it. ```auto ninja: error: Stat(subprojects/usrsctp-4e06feb01cadcd127d119486b98a4bd3d64aa1e7/libusrsctp.a.p/C__Users_runneradmin_.cargo_registry_src_index.crates.io-6f17d22bba15001f_mediasoup-sys-0.5.4_subprojects_usrsctp-4e06feb01cadcd127d119486b98a4bd3d64aa1e7_usrsctplib_user_environment.c.obj): Filename longer than 260 characters ``` For some reason, building with rust creates a longer path than building with node.