[英]What toolchain do I need to cross-compile Clang for iOS
OK, so first of all I know that this can be compiled on iOS (armv7) because I read the documentation. 好的,首先我知道这可以在iOS(armv7)上编译,因为我阅读了文档。 However, I can't find the right toolchain.
但是,我找不到合适的工具链。
So, now, what toolchains I've already tried: 那么,现在,我已经尝试过哪些工具链:
i686-apple-darwin10-cpp-4.2.1
i686-apple-darwin10-g++-4.2.1
i686-apple-darwin10-gcc-4.2.1
The above cross-compiles to x86 (I'm on i386). 以上交叉编译为x86(我在i386上)。 Works fine.
工作正常。 But I don't need it
但我不需要它
arm-apple-darwin10-cpp-4.2.1
arm-apple-darwin10-g++-4.2.1
arm-apple-darwin10-gcc-4.2.1
The above compiles fine, but doesn't cross compile to arm as I would have expected, instead, it simply compiles to my current arch. 以上编译很好,但不会像我预期的那样交叉编译到arm,相反,它只是编译到我当前的arch。
I'm a real beginner in this matter, in fact this is my first attempt to cross-compile something. 我是这个问题的真正初学者,事实上这是我第一次尝试交叉编译。
UPDATE: 更新:
Here are the commands that I've tried(this is for armv6; armv7 is similar): 以下是我尝试过的命令(这是针对armv6; armv7类似):
configure: 配置:
../llvm/configure --host=arm-apple-darwin6 --target=arm-apple-darwin6
--build=i386-apple-darwin --enable-optimized --disable-debug
--disable-expensive-checks --disable-doxygen --disable-threads
env vars: env vars:
export DEVROOT=/Developer/Platforms/iPhoneOS.platform/Developer
export SDKROOT=$DEVROOT/SDKs/iPhoneOS$IOS_BASE_SDK.sdk
export CFLAGS="-arch armv6 -pipe -no-cpp-precomp -isysroot $SDKROOT -miphoneos-version-min=$IOS_DEPLOY_TGT -I$SDKROOT/usr/include/"
export CPP="$DEVROOT/usr/bin/arm-apple-darwin10-cpp-4.2.1"
export CXX="$DEVROOT/usr/bin/arm-apple-darwin10-g++-4.2.1"
export CXXCPP="$DEVROOT/usr/bin/arm-apple-darwin10-cpp-4.2.1"
export CC="$DEVROOT/usr/bin/arm-apple-darwin10-gcc-4.2.1"
export LD=$DEVROOT/usr/bin/ld
export AR=$DEVROOT/usr/bin/ar
export AS=$DEVROOT/usr/bin/as
export NM=$DEVROOT/usr/bin/nm
export RANLIB=$DEVROOT/usr/bin/ranlib
export LDFLAGS="-L$SDKROOT/usr/lib/"
export CPPFLAGS=$CFLAGS
export CXXFLAGS=$CFLAGS
UPDATE : The purpose of this cross compile is to make an armv7(armv6) library not a command line tool. 更新:此交叉编译的目的是使armv7(armv6)库不是命令行工具。
YET ANOTHER UPDATE: I used the following: 再来一次更新:我使用了以下内容:
CC="$DEVROOT/usr/bin/clang"
CXX="$DEVROOT/usr/bin/clang++"
./llvm/configure --host=i386-apple-darwin --target=armv7-apple-darwin --build=armv7-apple-darwin --enable-optimized --disable-debug --disable-expensive-checks --disable-doxygen --disable-threads --enable-targets=arm
And I managed to get checking whether we are cross compiling... yes
out of the configure
tool. 我设法
checking whether we are cross compiling... yes
的configure
工具。 However, make
still outputs a x86_64 binary:( 但是,
make
仍然输出x86_64二进制文件:(
In principle your configure invocation looks good. 原则上,您的配置调用看起来很好。 I'm trying to shoot a few typical mistakes:
我正试图拍摄一些典型的错误:
make clean
after every change of architecture? make clean
了吗?
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