Question

我正在使用Cargo为iOS架构构建我的Rust库（i386-apple-ios x86_64-apple-ios armv7-apple-ios armv7s-apple-ios aarch64-apple-ios）。我在为Armv7和Armv7s iOS设备架构构建时遇到了问题。关于丢失标准库组件（例如，memcpy，memset等），我遇到了错误。虽然（i386和i686）以及Arm64也适用于模拟器。

我尝试了两种使用Cargo进行交叉编译的方法：

为所有iOS架构安装Rustup工具链目标。
使用我的配置设置为所有iOS体系结构的目标来构建Rustc（../configure --target = armv7-apple-ios，armv7s-apple-ios，i386-apple-ios，aarch64-apple-ios， x86_64-apple-ios --prefix = $ HOME / rustc-ios）每https://www.bignerdranch.com/blog/building-an-ios-app-in-rust-part-1/。

当我尝试接近＃1时，我收到以下错误：

架构armv7的未定义符号：

  "memset", referenced from:
      ___aeabi_memset in libtest_sst.a(aeabi_memset.o)
      ___aeabi_memclr in libtest_sst.a(aeabi_memset.o)
     (maybe you meant: ___aeabi_memset)
  "memcpy", referenced from:
      ___aeabi_memcpy in libtest_sst.a(aeabi_memcpy.o)
     (maybe you meant: ___aeabi_memcpy)
  "memcmp", referenced from:
      ___aeabi_memcmp in libtest_sst.a(aeabi_memcmp.o)
     (maybe you meant: ___aeabi_memcmp)
  "___aeabi_dsub", referenced from:
      ___aeabi_drsub in libtest_sst.a(aeabi_drsub.o)
  "___aeabi_fsub", referenced from:
      ___aeabi_frsub in libtest_sst.a(aeabi_frsub.o)
  "__aeabi_fcmplt", referenced from:
      ___aeabi_cfcmple in libtest_sst.a(aeabi_cfcmp.o)
     (maybe you meant: ___aeabi_fcmplt)
  "__aeabi_fcmpeq", referenced from:
      ___aeabi_cfcmple in libtest_sst.a(aeabi_cfcmp.o)
     (maybe you meant: ___aeabi_fcmpeq)
  "__aeabi_cfcmpeq_check_nan", referenced from:
      ___aeabi_cfcmpeq in libtest_sst.a(aeabi_cfcmp.o)
     (maybe you meant: ___aeabi_cfcmpeq_check_nan)
  "memmove", referenced from:
      ___aeabi_memmove in libtest_sst.a(aeabi_memmove.o)
     (maybe you meant: ___aeabi_memmove)
  "__aeabi_dcmpeq", referenced from:
      ___aeabi_cdcmple in libtest_sst.a(aeabi_cdcmp.o)
     (maybe you meant: ___aeabi_dcmpeq)
  "__aeabi_cdcmpeq_check_nan", referenced from:
      ___aeabi_cdcmpeq in libtest_sst.a(aeabi_cdcmp.o)
     (maybe you meant: ___aeabi_cdcmpeq_check_nan)
  "__aeabi_cfcmple", referenced from:
      ___aeabi_cfcmpeq in libtest_sst.a(aeabi_cfcmp.o)
      ___aeabi_cfrcmple in libtest_sst.a(aeabi_cfcmp.o)
     (maybe you meant: ___aeabi_cfcmple)
  "__aeabi_dcmplt", referenced from:
      ___aeabi_cdcmple in libtest_sst.a(aeabi_cdcmp.o)
     (maybe you meant: ___aeabi_dcmplt)
  "__aeabi_cdcmple", referenced from:
      ___aeabi_cdcmpeq in libtest_sst.a(aeabi_cdcmp.o)
      ___aeabi_cdrcmple in libtest_sst.a(aeabi_cdcmp.o)
     (maybe you meant: ___aeabi_cdcmple)
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)

当我尝试接近＃2时，我收到以下错误：

架构armv7的未定义符号：

  "___aeabi_fsub", referenced from:
      ___aeabi_frsub in libtest_sst.a(aeabi_frsub.c.o)
  "___aeabi_dsub", referenced from:
      ___aeabi_drsub in libtest_sst.a(aeabi_drsub.c.o)
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)

用于生成最终静态库的Makefile如下所示：

ARCHS = i386-apple-ios x86_64-apple-ios armv7-apple-ios armv7s-apple-ios aarch64-apple-ios
LIB = libtest.a

all: $(LIB)

.PHONY: $(ARCHS)
$(ARCHS): %:
        cargo build --verbose --no-default-features --features=no_network --target $@

$(LIB): $(ARCHS)
        lipo -create -output $@ $(foreach arch,$(ARCHS),$(wildcard target/$(arch)/debug/$(LIB)))

我的Cargo.toml看起来像这样：

[package]
name = "test"
version = "0.1.0"
authors = ["test <test@test.com>"]

build = "build.rs"

[lib]
name = "test"
crate-type = ["staticlib"]

[features]

default = ["hyper"]
no_network = []

[build-dependencies]
serde_codegen = "*"

[dependencies]
# error-chain = "*"
hyper = { version = "*", optional = true }
libc = "*"
murmur3 = "*"
quick-error = "*"
serde = "*"
serde_json = "*"
time = "*"
url = "*"

我实际上不确定我是否正确安装了工具链。我在另一个问题中发布了这个问题： Unable to override Rustup toolchain for custom build of iOS Toolchain

这是build.rs代码：

extern crate serde_codegen;

use std::env;
use std::path::Path;

fn serde_codegen_data(data_class: &str) {
  let out_dir = env::var_os("OUT_DIR").expect("OUT_DIR expected");

  let src_name = format!("src/data/{}.rs.in", data_class);
  let src = Path::new(&src_name);

  let dst_name = format!("{}.rs", data_class);
  let dst = Path::new(&out_dir).join(&dst_name);

  serde_codegen::expand(&src, &dst).expect("serde_codegen");
}

pub fn main() {
    serde_codegen_data("audience");
    serde_codegen_data("condition");
    serde_codegen_data("dimension");
    serde_codegen_data("event");
    serde_codegen_data("experiment");
    serde_codegen_data("project");
    serde_codegen_data("traffic_allocation");
    serde_codegen_data("variation");
    serde_codegen_data("group");
}

此外，在XCode中，我还尝试链接以下库：

图书馆：系统框架：基金会图书馆：objc 框架：安全图书馆：c 图书馆：m

根据货物输出警告。但是，我仍然得到同样的错误。

[Update 7/21/16]

刚从https://github.com/TimNN/cargo-lipo尝试了Cargo Lipo，但我仍然得到完全相同的错误。

iOS设备架构交叉编译Rust时缺少标准库组件（Arm7，Armv7）使用Cargo

0 个答案: