OpenSSL包在Mac OS X 10.11上无法编译

我尝试在Mac OS X 10.11.2上为Rust安装Iron框架,但是当我运行cargo build或cargo run编译时它失败了openssl:

failed to run custom build command for `openssl-sys-extras v0.7.4`
Process didn't exit successfully: `/xxx/rust/hello/target/debug/build/openssl-sys-extras-413d6c73b37a590d/build-script-build` (exit code: 101)
--- stdout
TARGET = Some("x86_64-apple-darwin")
OPT_LEVEL = Some("0")
PROFILE = Some("debug")
TARGET = Some("x86_64-apple-darwin")
debug=true opt-level=0
HOST = Some("x86_64-apple-darwin")
TARGET = Some("x86_64-apple-darwin")
TARGET = Some("x86_64-apple-darwin")
HOST = Some("x86_64-apple-darwin")
CC_x86_64-apple-darwin = None
CC_x86_64_apple_darwin = None
HOST_CC = None
CC = None
HOST = Some("x86_64-apple-darwin")
TARGET = Some("x86_64-apple-darwin")
HOST = Some("x86_64-apple-darwin")
CFLAGS_x86_64-apple-darwin = None
CFLAGS_x86_64_apple_darwin = None
HOST_CFLAGS = None
CFLAGS = None
running: "cc" "-O0" "-ffunction-sections" "-fdata-sections" "-g" "-m64" "-fPIC" "-o" "/xxx/rust/hello/target/debug/build/openssl-sys-extras-413d6c73b37a590d/out/src/openssl_shim.o" "-c" "src/openssl_shim.c"
ExitStatus(Code(1))


command did not execute successfully, got: exit code: 1



--- stderr
src/openssl_shim.c:1:10: fatal error: 'openssl/hmac.h' file not found
#include 
     ^
1 error generated.
thread '
' panicked at 'explicit panic', /xxx/.cargo/registry/src/github.com-0a35038f75765ae4/gcc-0.3.21/src/lib.rs:772

openssl 版似乎没问题:

$ openssl version
OpenSSL 0.9.8zg 14 July 2015

我不知道我要做什么才能使这个安装工作​​并试试Iron.

从rust-openssl版本0.8开始,Homebrew安装的OpenSSL库将被包自动检测到,不需要设置额外的环境变量.

如果您需要先支持之前的版本或选择不使用Homebrew,请继续阅读.

这是一个已知问题(也是这个和这个),但不是箱子可以解决的问题.

快速解决方案是使用Homebrew安装OpenSSL,然后通过设置OPENSSL_INCLUDE_DIR和OPENSSL_LIB_DIR环境变量显式指向找到OpenSSL的目录:

OPENSSL_INCLUDE_DIR=/usr/local/Cellar/openssl/1.0.2e/include \
OPENSSL_LIB_DIR=/usr/local/Cellar/openssl/1.0.2e/lib \
cargo build

export OPENSSL_INCLUDE_DIR=$(brew --prefix openssl)/include
export OPENSSL_LIB_DIR=$(brew --prefix openssl)/lib

brew install openssl
export OPENSSL_INCLUDE_DIR=`brew --prefix openssl`/include
export OPENSSL_LIB_DIR=`brew --prefix openssl`/lib
cargo clean
cargo build