Tauri Universal Build for Mac (Solve SSL Problem)

I had problem building a universal Tauri app for Mac (M1 pro).

rustup target add x86_64-apple-darwin
rustup target add aarch64-apple-darwin
 
npm run tauri build -- --target universal-apple-darwin

The problem was with OpenSSL. The error message was:

    Finished `release` profile [optimized] target(s) in 4.50s
   Compiling openssl-sys v0.9.102
   Compiling cssparser v0.27.2
   Compiling walkdir v2.5.0
   Compiling alloc-stdlib v0.2.2
   Compiling markup5ever v0.11.0
   Compiling uuid v1.8.0
   Compiling fxhash v0.2.1
   Compiling crossbeam-epoch v0.9.18
   Compiling selectors v0.22.0
   Compiling html5ever v0.26.0
   Compiling indexmap v1.9.3
   Compiling tracing-core v0.1.32
error: failed to run custom build command for `openssl-sys v0.9.102`

Caused by:
  process didn't exit successfully: `/Users/hacker/Dev/projects/devclean/devclean-ui/src-tauri/target/release/build/openssl-sys-2efafcc1e9e30675/build-script-main` (exit status: 101)
  --- stdout
  cargo:rerun-if-env-changed=X86_64_APPLE_DARWIN_OPENSSL_LIB_DIR
  X86_64_APPLE_DARWIN_OPENSSL_LIB_DIR unset
  cargo:rerun-if-env-changed=OPENSSL_LIB_DIR
  OPENSSL_LIB_DIR unset
  cargo:rerun-if-env-changed=X86_64_APPLE_DARWIN_OPENSSL_INCLUDE_DIR
  X86_64_APPLE_DARWIN_OPENSSL_INCLUDE_DIR unset
  cargo:rerun-if-env-changed=OPENSSL_INCLUDE_DIR
  OPENSSL_INCLUDE_DIR unset
  cargo:rerun-if-env-changed=X86_64_APPLE_DARWIN_OPENSSL_DIR
  X86_64_APPLE_DARWIN_OPENSSL_DIR unset
  cargo:rerun-if-env-changed=OPENSSL_DIR
  OPENSSL_DIR unset
  cargo:rerun-if-env-changed=OPENSSL_NO_PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG_ALLOW_CROSS_x86_64-apple-darwin
  cargo:rerun-if-env-changed=PKG_CONFIG_ALLOW_CROSS_x86_64_apple_darwin
  cargo:rerun-if-env-changed=TARGET_PKG_CONFIG_ALLOW_CROSS
  cargo:rerun-if-env-changed=PKG_CONFIG_ALLOW_CROSS
  cargo:rerun-if-env-changed=PKG_CONFIG_x86_64-apple-darwin
  cargo:rerun-if-env-changed=PKG_CONFIG_x86_64_apple_darwin
  cargo:rerun-if-env-changed=TARGET_PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_x86_64-apple-darwin
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_x86_64_apple_darwin
  cargo:rerun-if-env-changed=TARGET_PKG_CONFIG_SYSROOT_DIR
  cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR
  run pkg_config fail: pkg-config has not been configured to support cross-compilation.

  Install a sysroot for the target platform and configure it via
  PKG_CONFIG_SYSROOT_DIR and PKG_CONFIG_PATH, or install a
  cross-compiling wrapper for pkg-config and set it via
  PKG_CONFIG environment variable.

  --- stderr
  thread 'main' panicked at /Users/hacker/.cargo/registry/src/index.crates.io-6f17d22bba15001f/openssl-sys-0.9.102/build/find_normal.rs:190:5:


  Could not find directory of OpenSSL installation, and this `-sys` crate cannot
  proceed without this knowledge. If OpenSSL is installed and this crate had
  trouble finding it,  you can set the `OPENSSL_DIR` environment variable for the
  compilation process.

  Make sure you also have the development packages of openssl installed.
  For example, `libssl-dev` on Ubuntu or `openssl-devel` on Fedora.

  If you're in a situation where you think the directory *should* be found
  automatically, please open a bug at https://github.com/sfackler/rust-openssl
  and include information about your system as well as this message.

  $HOST = aarch64-apple-darwin
  $TARGET = x86_64-apple-darwin
  openssl-sys = 0.9.102


  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
warning: build failed, waiting for other jobs to finish...
       Error failed to build x86_64-apple-darwin binary: failed to build app

Solution

Install OpenSSL with brew

brew install openssl
export export OPENSSL_DIR=$(brew --prefix openssl)

This problem was not fully solved. I had to run GitHub Action on macos-13 runners (intel CPU). The build passes but the resulting app won't run on x86_64 Macs. Keeps saying the openssl lib cannot be loaded. I will update this post when I find a solution.

The real source of problem was actually git2's dependency (https://crates.io/crates/git2/0.18.3/dependencies) openssl-sys. Removing git2 from my app fixed all problems. Running on macos-14 runner (M1 pro) worked fine.

openssl-sys is a OpenSSL bindings for rust. So it doesn't include the actual OpenSSL library. You need to install OpenSSL on your system.

My guess is, during the build process on GitHub Action, the openssl library location is different from the one on my local machine, and the path is burned into the binary. So the binary won't run on other machines. This is just a guess. There must be some solution. I will update this post when I find it.

How is this guide?