如何交叉编译clang / llvm的iOS？ [英] How to cross-compile clang/llvm for iOS?

问题描述

如何交叉编译clang / llvm for iOS？我需要得到libclang（.a或.dylib我相信）通过C API在我的iOS应用程序中使用它。

解决方案

$ p> ＃获取LLVM / Clang

mkdir llvm
curl -O http://llvm.org/releases/3.4/llvm-3.4.src.tar .gz
tar xzfv llvm-3.4.src.tar.gz
cd llvm-3.4 / tools /
curl -O http://llvm.org/releases/3.4/clang-3.4 .src.tar.gz
tar xzfv clang-3.4.src.tar.gz
mv clang-3.4 clang
cd ..

＃假设Xcode 5.1 LLVM 3.5+还需要-stdlib = libc ++）

export CC =clang -arch armv7 -mios-version-min = 5.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/ iPhoneOS.platform / Developer / SDKs / iPhoneOS7.1.sdk
export CXX =clang ++ -arch armv7 -mios-version-min = 5.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS .platform / Developer / SDKs / iPhoneOS7.1.sdk

mkdir build
cd build

../configure \
--prefix = / Users / thomas / tmp / llvm-ios \
--host = arm-apple-darwin11 \
--enable-optimized \
--disable-assertions

unset CC CXX＃important！ （否则下一步将失败）

make VERBOSE = 1 -j ...


$ b b

过一会儿你会得到：

  /Users/thomas/tmp/llvm-3.4/lib/Support/ Unix / Program.inc：46：10：fatal error：'crt_externs.h'file not found 
 #include< crt_externs.h> // _NSGetEnviron 
 ^ 
  

注释头文件并修改<$ c $

  make install 
  

How to cross-compile clang/llvm for iOS? I need to get libclang (.a or .dylib i believe) to use it via C API in my iOS app.

解决方案

# Get LLVM/Clang

mkdir llvm
curl -O http://llvm.org/releases/3.4/llvm-3.4.src.tar.gz
tar xzfv llvm-3.4.src.tar.gz
cd llvm-3.4/tools/
curl -O http://llvm.org/releases/3.4/clang-3.4.src.tar.gz
tar xzfv clang-3.4.src.tar.gz
mv clang-3.4 clang
cd ..

# Assuming Xcode 5.1 (LLVM 3.5+ requires -stdlib=libc++ as well)

export CC="clang -arch armv7 -mios-version-min=5.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.1.sdk"
export CXX="clang++ -arch armv7 -mios-version-min=5.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.1.sdk"

mkdir build
cd build

../configure \
  --prefix=/Users/thomas/tmp/llvm-ios \
  --host=arm-apple-darwin11 \
  --enable-optimized \
  --disable-assertions

unset CC CXX # important! (Otherwise the next step will fail)

make VERBOSE=1 -j...

After a while you will get:

/Users/thomas/tmp/llvm-3.4/lib/Support/Unix/Program.inc:46:10: fatal error: 'crt_externs.h' file not found
#include <crt_externs.h> // _NSGetEnviron
         ^

Comment the header file and hack the call to _NSGetEnviron() out (you'll get this three times)

make install

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