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一般编程阶段用的是Windows或者Mac系统,部署平台是Linux,这种情况下就需要使用Cross-Compiler交叉编译,意思是可以在当前平台Host下编译出目标平台target的可执行文件,
尤其是做ARM平台开发的同学对这个更为熟悉。
Rust交叉编译在Github上有一个文档Rust核心员工Jorge Aparicio提供的一份文档https://github.com/japaric/rust-cross,推荐大家仔细的读一读。
如果要求比较简单,都是X86_64架构,从Mac上编译出x86_64-unknown-linux-musl就好。
mac上执行
rustup target add x86_64-unknown-linux-musl
安装musl-cross
brew install filosottile/musl-cross/musl-cross
配置和打包编译
配置config
vi ~/.cargo/config(没有新建即可,另外可在项目根目录下创建.cargo/config文件,只对当前项目生效)
添加内容如下:
[target.x86_64-unknown-linux-musl] linker = "x86_64-linux-musl-gcc"
cargo new cross-compiling
cd cross-compiling
cargo build --release --target x86_64-unknown-linux-musl
程序简答,确实就是能直接交叉编译了。
但是有的项目用到了openssl,就有可能编译报错
error: failed to run custom build command for openssl-sys v0.9.76
error: failed to run custom build command for `openssl-sys v0.9.76`
Caused by:
process didn't exit successfully: `/Users/xxxxx/target/release/build/openssl-sys-35f194a97bc2188b/build-script-main` (exit status: 101)
--- stdout
cargo:rustc-cfg=const_fn
cargo:rustc-cfg=openssl
cargo:rerun-if-env-changed=X86_64_UNKNOWN_LINUX_MUSL_OPENSSL_LIB_DIR
X86_64_UNKNOWN_LINUX_MUSL_OPENSSL_LIB_DIR unset
cargo:rerun-if-env-changed=OPENSSL_LIB_DIR
OPENSSL_LIB_DIR unset
cargo:rerun-if-env-changed=X86_64_UNKNOWN_LINUX_MUSL_OPENSSL_INCLUDE_DIR
X86_64_UNKNOWN_LINUX_MUSL_OPENSSL_INCLUDE_DIR unset
cargo:rerun-if-env-changed=OPENSSL_INCLUDE_DIR
OPENSSL_INCLUDE_DIR unset
cargo:rerun-if-env-changed=X86_64_UNKNOWN_LINUX_MUSL_OPENSSL_DIR
X86_64_UNKNOWN_LINUX_MUSL_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-unknown-linux-musl
cargo:rerun-if-env-changed=PKG_CONFIG_ALLOW_CROSS_x86_64_unknown_linux_musl
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-unknown-linux-musl
cargo:rerun-if-env-changed=PKG_CONFIG_x86_64_unknown_linux_musl
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-unknown-linux-musl
cargo:rerun-if-env-changed=PKG_CONFIG_SYSROOT_DIR_x86_64_unknown_linux_musl
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.\n\nInstall a sysroot for the target platform and configure it via\nPKG_CONFIG_SYSROOT_DIR and PKG_CONFIG_PATH, or install a\ncross-compiling wrapper for pkg-config and set it via\nPKG_CONFIG environment variable."
--- stderr
thread 'main' panicked at '
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 = x86_64-apple-darwin
$TARGET = x86_64-unknown-linux-musl
openssl-sys = 0.9.76
', /Users/xxxx/.cargo/registry/src/mirrors.ustc.edu.cn-61ef6e0cd06fb9b8/openssl-sys-0.9.76/build/find_normal.rs:191:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
warning: build failed, waiting for other jobs to finish...
exit 101
解决
brew install openssl brew install pkg-config brew install perl 我也不知道是不是其中一个就行,我装了,后面也懒得卸载重新验证了
cargo.toml的[dependencies]添加如下
openssl-sys = "0.9" openssl = { version = "0.10.33", features = ["vendored"] }
再次执行cargo build --release --target x86_64-unknown-linux-musl
发现还是报failed to run custom build command for openssl-sys v0.9.76这个错
需要添加一些内容
CROSS_COMPILE=x86_64-linux-musl- cargo build --release --target x86_64-unknown-linux-musl
这样就OK 了
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