How to build it under windows please ?

[jalba69]

Hello,
I need Rust-ffmpeg to build Gifski with video support in it (here https://github.com/ImageOptim/gifski ) , but rust-ffmpeg always fails to build.

cloning the rust ffmpeg repo and trying to build it, alone, and i get this

H:\rust-ffmpeg>cargo build --release
   Compiling ffmpeg-sys v3.4.1
error: failed to run custom build command for `ffmpeg-sys v3.4.1`
process didn't exit successfully: `H:\rust-ffmpeg\target\release\build\ffmpeg-sy
s-9c2b3fa23df71254\build-script-build` (exit code: 101)
--- stderr
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: MSVC', s
rc\libcore\result.rs:916:5
note: Run with `RUST_BACKTRACE=1` for a backtrace.

Enabling backtrace :

H:\rust-ffmpeg>cargo build --release
   Compiling ffmpeg-sys v3.4.1
error: failed to run custom build command for `ffmpeg-sys v3.4.1`
process didn't exit successfully: `H:\rust-ffmpeg\target\release\build\ffmpeg-sys-9c2b3fa23df71254\b
uild-script-build` (exit code: 101)
--- stderr
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: MSVC', src\libcore\result.rs
:916:5
stack backtrace:
   0: <std::sync::condvar::WaitTimeoutResult as core::fmt::Debug>::fmt
   1: <std::time::SystemTimeError as core::fmt::Display>::fmt
   2: std::panicking::Location::column
   3: std::panicking::Location::column
   4: std::panicking::rust_panic_with_hook
   5: std::panicking::begin_panic_fmt
   6: std::panicking::begin_panic_fmt
   7: rust_begin_unwind
   8: core::panicking::panic_fmt
   9: core::result::unwrap_failed
  10: <alloc::vec::Vec<T> as core::ops::drop::Drop>::drop
  11: bindgen::Bindings::write_to_file
  12: std::panicking::update_panic_count
  13: _rust_maybe_catch_panic
  14: std::rt::lang_start_internal
  15: main
  16: __scrt_common_main_seh
             at f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:283
  17: BaseThreadInitThunk

I'm using Rust stable-x86_64-pc-windows-msvc 1.24.0
Visual Studio 2017
win 7 x64 pro

I don't know what to do at this point, also got similar errors when trying to build rust-ffmpeg-sys alone...

So any good soul have an idea or tips about how to build this under windows please ?

Thanks in advance.

[Niedzwiedzw]

+1 for that, I also need this under windows and it fails to compile. could someone provide instructions on how to install ffmpeg so it is seen by cargo?

[woubuc]

+1 some documentation for Windows platform would be useful.

[klesun]

I'm getting same error on linux.

error: failed to run custom build command for `ffmpeg-sys v4.2.1`

Caused by:
  process didn't exit successfully: `/home/klesun/gits/detect-still-frames/target/release/build/ffmpeg-sys-3f4eadb171eb941b/build-script-build` (exit code: 101)
  --- stdout
  cargo:rerun-if-env-changed=LIBAVUTIL_NO_PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH_x86_64-unknown-linux-gnu
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_PATH
  cargo:rerun-if-env-changed=PKG_CONFIG_PATH
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR_x86_64-unknown-linux-gnu
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_LIBDIR
  cargo:rerun-if-env-changed=PKG_CONFIG_LIBDIR
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_x86_64-unknown-linux-gnu
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_x86_64_unknown_linux_gnu
  cargo:rerun-if-env-changed=HOST_PKG_CONFIG_SYSROOT_DIR
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR

  --- stderr
  thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Failure { command: "\"pkg-config\" \"--libs\" \"--cflags\" \"libavutil\"", output: Output { status: ExitStatus(ExitStatus(256)), stdout: "", stderr: "Package libavutil was not found in the pkg-config search path.\nPerhaps you should add the directory containing `libavutil.pc\'\nto the PKG_CONFIG_PATH environment variable\nNo package \'libavutil\' found\n" } }', /home/klesun/.cargo/registry/src/git.luolix.top-1ecc6299db9ec823/ffmpeg-sys-4.2.1/build.rs:650:14
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Guess I need to install libavutil somehow...

Solution here: #126

[meh]

No, you need to install pkg-config or use a nix-shell.

[klesun]

Hm, if you are replying to me, I am using a unix shell, I'm on ubuntu.
Clean error output:

Package libavutil was not found in the pkg-config search path.
Perhaps you should add the directory containing `libavutil.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libavutil' found

I seem to have some:

/usr/lib/x86_64-linux-gnu/libavutil.so.56

I wonder if that's what I'm supposed to specify in the env variable...

[meh]

@klesun I am, and I'm talking about Nix the package manager, not nix as in UNIX.

[klesun]

Hm, thanks for help, but may I clarify, to add this library cargo dependency in my project I need to somehow get use of NixOS?

I believe I do have pkg-config installed:

klesun@kunkka:~$ pkg-config --version
0.29.1

Upd.: oh, sorry, only now realized this issue was about building the rust-ffmpeg itself, not building a project that depends on it's cargo package...

Upd.: I found out that to solve the issue of missing libavutil I had to:

sudo apt-get install libavutil-dev

Though then I got another missing dependency reported, this time it's libavformat.pc. Hope when I install each of them the lib will work... 🥺

Upd.: yes, it did!

The list of missing dependencies you need to install to make build work:

sudo apt-get install libavutil-dev
sudo apt-get install libavformat-dev
sudo apt-get install libavfilter-dev
sudo apt-get install libavdevice-dev
sudo apt-get install libclang-dev

Guess I'm not the first who faced the issue of missing dev libraries in the system: #47

I wonder how should they be installed on windows... =/