几乎裸iOS8.4 - >如何获取链接器？ [英] Almost naked iOS8.4 --> how to get a linker?

问题描述

编辑2015-29-10。 II 。实际上， -arch armv7 而不是 -arch arm64

编辑2015-29-10。 我尝试添加。我尝试添加

  export CFLAGS = -  O1
 export CXXFLAGS =在配置之前的O1
  

同一个错误，其他文件缺少此时：

 / usr / local / cctools-arm64-port / bin / ld -demangle -dynamic -arch arm64 -iphoneos_version_min 5.0.0 -syslibroot /usr/local/iPhoneOS8.4.sdk -o testcpp /var/tmp/testcpp-4f79ac.o -lstdc ++ -lSystem 
 ld：file not发现：N？L 
  

我也尝试过 -O0 优化代替 -01 ，结果相同。

EDIT 2015-28-10。 II。我这样做：

  ./ autogen.sh 
 export CC =clang -arch arm64 -mios-version-min = 8.4 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS8.4.sdk
 export CXX =clang ++ -arch arm64 -mios-version-min = 8.4 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS8.4.sdk
 ./configure -v --host = arm-apple-darwin11 --prefix = / usr / local / lvm-cross / cctools-arm64-port 
 unset CC CXX 
 make& sudo make install 
  

然后我在iDevice上尝试了一个简单的hello世界，testcpp.cpp包含： p>

  #include< iostream> 
 int main（）
 {
 std :: cout< oijo< std :: endl; 
 return 0; 
} 
  

编译

  clang ++ -v -isysroot /usr/local/iPhoneOS8.4.sdk -target arm64-apple-darwin11 testcpp.cpp -o testcpp 
  

这给了我：

  （标签/ RELEASE_370 / final）
目标：arm64-apple-darwin11 
线程模型：posix 
/ usr / local / llvm-ios / bin / clang ++-cc1 -triple arm64- apple-ios5.0.0 -Wdeprecated-objc-isa-usage -Werror = deprecated-objc-isa-usage -Werror = implicit-function-declaration -emit-obj -mrelax-all -disable-free -disable-llvm-verifier  - main-file-name testcpp.cpp -mrelocation-model pic -pic-level 2 -mthread-model posix -mdisable-fp-elim -masm-verbose -target-cpu generic -target-feature + neon -target-abi darwinpcs  - target-linker-version 253.3.3 -v -dwarf-column-info -resource-dir /usr/local/llvm-ios/bin/../lib/clang/3.7.0 -isysroot / usr / local / iPhoneOS8。 4.sdk -fdeprecated-macro -fdebug-compilation-dir / var / mobile / Documents / CODING / MY / TESTS_0 / CPP -ferror-limit 19 -fmessage-length 108 -stack-protector 1 -mstackrealign -fallow-half-arguments -and-returns -fblocks -fobjc-runtime = ios-5.0.0 -fencode-extended-block-signature -fcxx-exceptions -fexceptions -fmax-type-align = 16 -fdiagnostics-show-option -fcolor-diagnostics -o /var/tmp/testcpp-f1de66.o -x c ++ testcpp.cpp 
 clang基于LLVM的-cc1版本3.7.0 3.7.0 default目标arm-apple-darwin14.0.0 
忽略不存在的目录 /usr/local/iPhoneOS8.4.sdk/usr/include/c++/4.2.1/arm64-apple-darwin10/
忽略不存在的目录/usr/local/iPhoneOS8.4.sdk/usr/local / include
忽略不存在的目录/usr/local/iPhoneOS8.4.sdk/Library/Frameworks
 #include...搜索从这里开始：
 #include< ..>搜索从这里开始：
 /usr/local/iPhoneOS8.4.sdk/usr/include/c++/4.2.1 
 /usr/local/iPhoneOS8.4.sdk/usr/include/c++/4.2 .1 / backward 
 /usr/local/llvm-ios/bin/../lib/clang/3.7.0/include 
 /usr/local/iPhoneOS8.4.sdk/usr/include 
 /usr/local/iPhoneOS8.4.sdk/System/Library/Frameworks（框架目录）
搜索列表的结尾。 
/ usr / local / cctools-arm64-port / bin / ld-demangle -dynamic -arch arm64 -iphoneos_version_min 5.0.0 -syslibroot /usr/local/iPhoneOS8.4.sdk -o testcpp / var / tmp / testcpp-f1de66.o -lstdc ++ -lSystem 
 ld：找不到文件：4 
 clang ++：error：linker命令失败，退出代码为1（使用-v查看调用）
  

我也试过没有取消设置CC CXX success...





编辑2015-28-10。 使用cydia解决方案建议确实工作，但我绝对想自己构建它，所以我按照 https://github.com/tpoechtrager/cctools-port 方式。因为它是太无聊获取/构建 libtool 为mac os，我切换到一个虚拟盒ubuntu 15.10 64位，其中我 sudo apt- get install '编辑以下软件包： automake ， autogen ， libtool ， clang-3.7 ， uuid-dev llvm-3.7-dev 。然后我将 cd 编辑到 cctools 目录，并且：

  ./ autogen.sh 
 export CC =clang-3.7 -arch arm64
 export CXX =clang ++  -  3.7 -arch arm64
 ./configure --prefix = / home / lvm-ubuntu / Desktop / iPad / cctools-produced / --host = arm-apple-darwin11 
 make 
  pre> 
 
 
（完整输出位于新增gist。） make 产生以下警告和错误：
  clang：warning：编译期间未使用的参数：'-arch arm64'
 
 ../include/foreign/libkern/arm/OSByteOrder.h:11:10：error：redefinition of 
'_OSSwapInt16'
 uint16_t _OSSwapInt16（uint16_t data）
 ^ 
 ../include/foreign/libkern/i386/_OSByteOrder.h:46:1：note：以前的定义
在这里是
 _OSSwapInt16（
 ^ 
  
和模拟错误 _OSSwapInt32 和 _OSSwapInt64  ...我必须肯定会做错事。
 
 
 < hr> 
 
 
 初始问题 
 
 
 
我在iOS8中成功构建了交叉构建clang + llvm。 4在一个越狱iPad mini 3 wifi上，主要是由于以下两个问题：
 
 
 
  http://stackoverflow.com/questions/32808144/how- to-cross-compile-clang-llvm-3-7-0-for-ios8-x-on-ipad-mini-3 /  
 
 
 
 
 
 
 
  http://stackoverflow.com/questions/23946851/how-to-cross-compile-clang-llvm-for-ios/  
 
 
 
设置所有路径等，并尝试了一个 clang ++ -v testcpp.cpp -o testcpp 其中 testcpp.cpp  contains：
  int main（）
 {
 return 0; 
} 
  
，并且得到：
  clang ++：错误：无法执行命令：可执行文件ld不存在！ 
 clang ++：错误：linker命令失败，退出代码1（使用-v查看调用）
  
（整个详细输出位于此提示中。）
 
 
 
显然我没有GNU的 ld ，也没有任何真正的remplacement它（由llvm-clang），所以我问自己：在这种情况下我的策略是什么？ （没有链接器，我甚至不能尝试建立 binutils 在我的iPad上使用其 ld ）。 / p> 
 
 
 精确：我希望链接在幕后完成，以便我可以继续做 clang ++ -v testcpp.cpp -o testcpp ，也就是说，我不想在几个步骤中手动链接。 （但脚本可以确定，即使我发现更优雅，有一个真实的 ld 替换...）
 
 
 
 备注：在llvm-clang  bin 文件夹中我有这个：
  XXXXs-iPad：/ usr / local / llvm-ios / bin mobile $ ls -l 
 total 274412 
 -rwxr-xr-x 1 root wheel 205456 Oct 18 12 ：49 FileCheck * 
 -rwxr-xr-x 1 root wheel 7704096 Oct 18 12:48 bugpoint * 
 -rwxr-xr-x 1 root wheel 122036 Oct 18 12:48 c-index-test * 
 -rwxr-xr-x 1 root wheel 40802004 Oct 18 12:48 clang * 
 -rwxr-xr-x 1 root wheel 40802004 Oct 18 12:49 clang ++ * 
 -rwxr-xr -x 1 root wheel 31252792 Oct 18 12:49 clang-check * 
 -rwxr-xr-x 1 root wheel 1225352 Oct 18 12:49 clang-format * 
 -rwxr-xr-x 1 root轮671500 10月18 12:49 clang-tblgen * 
 -rwxr-xr-x 1根轮49684 10月18日12:49计数* 
 -rwxr-xr-x 1根轮22439396 10月18日12： 49 llc * 
 -rwxr-xr-x 1 root wheel 10351388 Oct 18 12:49 lli * 
 -rwxr-xr-x 1 root wheel 208140 Oct 18 12:49 lli-child-target * 
 -rwxr-xr-x 1 root wheel 9144692 Oct 18 12:49 llvm-ar * 
 -rwxr-xr-x 1 root wheel 1619592 Oct 18 12:49 llvm-as * 
  - rwxr-xr-x 1 root wheel 155080 Oct 18 12:49 llvm-bcanalyzer * 
 -rwxr-xr-x 1 root wheel 120864 Oct 18 12:49 llvm-config * 
 -rwxr-xr- x 1 root wheel 92232 Oct 18 12:49 llvm-config-host * 
 -rwxr-xr-x 1 root wheel 1604600 Oct 18 12:49 llvm-cov * 
 -rwxr-xr-x 1根轮1472656 Oct 18 12:49 llvm-cxxdump * 
 -rwxr-xr-x 1根轮1471516 Oct 18 12:49 llvm-diff * 
 -rwxr-xr-x 1根轮1225632 10月18 12:49 llvm-dis * 
 -rwxr-xr-x 1 root wheel 18342488 Oct 18 12:49 llvm-dsymutil * 
 -rwxr-xr-x 1 root wheel 419892 Oct 18 12:49 llvm-dwarfdump * 
 -rwxr-xr-x 1 root wheel 1686496 Oct 18 12:49 llvm-extract * 
 -rwxr-xr-x 1 root wheel 1800856 Oct 18 12:49 llvm-link * 
 -rwxr-xr-x 1 root wheel 10140692 Oct 18 12:49 llvm-mc * 
 -rwxr-xr-x 1 root wheel 138552 Oct 18 12:49 llvm-mcmarkup * 
 -rwxr-xr-x 1 root wheel 9144172 Oct 18 12:49 llvm-nm * 
 -rwxr-xr-x 1 root wheel 11554352 Oct 18 12:49 llvm-objdump * 
 -rwxr-xr -x 1 root wheel 220840 Oct 18 12:49 llvm-pdbdump * 
 -rwxr-xr-x 1 root wheel 469920 Oct 18 12:49 llvm-profdata * 
 -rwxr-xr-x 1 root wheel 9144692 Oct 18 12:49 llvm-ranlib * 
 -rwxr-xr-x 1 root wheel 1768528 Oct 18 12:49 llvm-readobj * 
 -rwxr-xr-x 1 root wheel 8388100 Oct 18 12:50 llvm-rtdyld * 
 -rwxr-xr-x 1 root wheel 1489124 Oct 18 12:50 llvm-size * 
 -rwxr-xr-x 1 root wheel 2106052 Oct 18 12:50 llvm -stress * 
 -rwxr-xr-x 1 root wheel 1610176 Oct 18 12:50 llvm-symbolizer * 
 -rwxr-xr-x 1 root wheel 1422732 Oct 18 12:50 llvm-tblgen * 
 -rwxr-xr-x 1 root wheel 1455516 Oct 18 12:50 macho-dump * 
 -rwxr-xr-x 1根轮71184 Oct 18 12:50 not * 
 -rwxr- xr-x 1 root wheel 1620520 Oct 18 12:50 obj2yaml * 
 -rwxr-xr-x 1 root wheel 23007212 Oct 18 12:50 opt * 
 -rwxr-xr-x 1 root wheel 1768416 Oct 18 12:50 verify-uselistorder * 
 -rwxr-xr-x 1 root wheel 402360 Oct 18 12:50 yaml2obj * 
  
 
 
解决方案
安装 org.coolstar.cctools 和 org.coolstar.ld64  via Cydia。
 
 
 
或者，建立 https://github.com/tpoechtrager/cctools-port 。
 
 
 
  CXX =clang ++  - arch arm64CC =clang -arch arm64./configure --host = arm-apple-darwin11  
 
EDIT 2015-29-10. II. In fact -arch armv7 instead of -arch arm64 and without lowering optimization, worked perfectly. 

EDIT 2015-29-10. I. I tried to add
export CFLAGS="-O1"
export CXXFLAGS="-O1"
before configure, and had the same error, with a different file missing this time :
 "/usr/local/cctools-arm64-port/bin/ld" -demangle -dynamic -arch arm64 -iphoneos_version_min 5.0.0 -syslibroot /usr/local/iPhoneOS8.4.sdk -o testcpp /var/tmp/testcpp-4f79ac.o -lstdc++ -lSystem
ld: file not found: N?L
I also tried with -O0 optimization instead of -01, same result.

EDIT 2015-28-10. II. I did this :
./autogen.sh
export CC="clang -arch arm64 -mios-version-min=8.4 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS8.4.sdk"
export CXX="clang++ -arch arm64 -mios-version-min=8.4 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS8.4.sdk"
./configure -v --host=arm-apple-darwin11 --prefix=/usr/local/lvm-cross/cctools-arm64-port
unset CC CXX
make && sudo make install
Then I tried a simple hello world on iDevice, with testcpp.cpp containing :
#include <iostream>
int main()
{
    std::cout << "oijo" << std::endl;
    return 0;
}
compiled with
clang++ -v -isysroot /usr/local/iPhoneOS8.4.sdk -target arm64-apple-darwin11 testcpp.cpp -o testcpp
which gave me :
clang version 3.7.0 (tags/RELEASE_370/final)
Target: arm64-apple-darwin11
Thread model: posix
 "/usr/local/llvm-ios/bin/clang++" -cc1 -triple arm64-apple-ios5.0.0 -Wdeprecated-objc-isa-usage -Werror=deprecated-objc-isa-usage -Werror=implicit-function-declaration -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -main-file-name testcpp.cpp -mrelocation-model pic -pic-level 2 -mthread-model posix -mdisable-fp-elim -masm-verbose -target-cpu generic -target-feature +neon -target-abi darwinpcs -target-linker-version 253.3.3 -v -dwarf-column-info -resource-dir /usr/local/llvm-ios/bin/../lib/clang/3.7.0 -isysroot /usr/local/iPhoneOS8.4.sdk -fdeprecated-macro -fdebug-compilation-dir /var/mobile/Documents/CODING/MY/TESTS_0/CPP -ferror-limit 19 -fmessage-length 108 -stack-protector 1 -mstackrealign -fallow-half-arguments-and-returns -fblocks -fobjc-runtime=ios-5.0.0 -fencode-extended-block-signature -fcxx-exceptions -fexceptions -fmax-type-align=16 -fdiagnostics-show-option -fcolor-diagnostics -o /var/tmp/testcpp-f1de66.o -x c++ testcpp.cpp
clang -cc1 version 3.7.0 based upon LLVM 3.7.0 default target arm-apple-darwin14.0.0
ignoring nonexistent directory "/usr/local/iPhoneOS8.4.sdk/usr/include/c++/4.2.1/arm64-apple-darwin10/"
ignoring nonexistent directory "/usr/local/iPhoneOS8.4.sdk/usr/local/include"
ignoring nonexistent directory "/usr/local/iPhoneOS8.4.sdk/Library/Frameworks"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/iPhoneOS8.4.sdk/usr/include/c++/4.2.1
 /usr/local/iPhoneOS8.4.sdk/usr/include/c++/4.2.1/backward
 /usr/local/llvm-ios/bin/../lib/clang/3.7.0/include
 /usr/local/iPhoneOS8.4.sdk/usr/include
 /usr/local/iPhoneOS8.4.sdk/System/Library/Frameworks (framework directory)
End of search list.
 "/usr/local/cctools-arm64-port/bin/ld" -demangle -dynamic -arch arm64 -iphoneos_version_min 5.0.0 -syslibroot /usr/local/iPhoneOS8.4.sdk -o testcpp /var/tmp/testcpp-f1de66.o -lstdc++ -lSystem
ld: file not found: ?4
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
I also tried without the unset CC CXX, with the same "success"...

EDIT 2015-28-10. I. Using cydia solutions as suggested indeed worked, but I definitely want to build it myself, so I followed the https://github.com/tpoechtrager/cctools-port way. As it is way too boring to get/build libtool for mac os, I switched to a vitual box ubuntu 15.10 64 bits, where I sudo apt-get install'ed the following packages : automake, autogen, libtool, clang-3.7, uuid-dev and llvm-3.7-dev. Then I cd'ed to the cctools directory and did :
./autogen.sh
export CC="clang-3.7 -arch arm64"
export CXX="clang++-3.7 -arch arm64"
./configure --prefix=/home/lvm-ubuntu/Desktop/iPad/cctools-produced/ --host=arm-apple-darwin11
make
(The complete output is in the new following gist.) make produced the following warnings and errors :
clang: warning: argument unused during compilation: '-arch arm64'

../include/foreign/libkern/arm/OSByteOrder.h:11:10: error: redefinition of
  '_OSSwapInt16'
uint16_t _OSSwapInt16(uint16_t data)
         ^
../include/foreign/libkern/i386/_OSByteOrder.h:46:1: note: previous definition
      is here
_OSSwapInt16(
^
and analogue errors for _OSSwapInt32 and _OSSwapInt64... I must be for sure doing something wrong.



Initial question.

I succeed in cross-building clang+llvm for iOS8.4 on a jailbroken iPad mini 3 wifi, mainly thanks to the two following questions :

http://stackoverflow.com/questions/32808144/how-to-cross-compile-clang-llvm-3-7-0-for-ios8-x-on-ipad-mini-3/

and

http://stackoverflow.com/questions/23946851/how-to-cross-compile-clang-llvm-for-ios/

Set all paths etc, and tried a clang++ -v testcpp.cpp -o testcpp where testcpp.cppcontains :
int main()
{
    return 0;
}
and got this :
clang++: error: unable to execute command: Executable "ld" doesn't exist!
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
(the whole verbose output is in this gist.)

Obviously I don't have GNU's ld nor any real "remplacement" of it (by llvm-clang), so that I am asking myself : what is my strategy in this case ? (Having no linker, I can't even try to build binutils on my iPad to use its ld).

Precision : I would like the linking to be done behind the scene, so that I could keep doing clang++ -v testcpp.cpp -o testcpp, that is, I don't want to do the linking "manually" myself in several steps. (But a script could be ok, even if I find more elegant to have a real ld replacement...)

Remark : in llvm-clang bin folder I have this :
XXXXs-iPad:/usr/local/llvm-ios/bin mobile$ ls -l
total 274412
-rwxr-xr-x 1 root wheel   205456 Oct 18 12:49 FileCheck*
-rwxr-xr-x 1 root wheel  7704096 Oct 18 12:48 bugpoint*
-rwxr-xr-x 1 root wheel   122036 Oct 18 12:48 c-index-test*
-rwxr-xr-x 1 root wheel 40802004 Oct 18 12:48 clang*
-rwxr-xr-x 1 root wheel 40802004 Oct 18 12:49 clang++*
-rwxr-xr-x 1 root wheel 31252792 Oct 18 12:49 clang-check*
-rwxr-xr-x 1 root wheel  1225352 Oct 18 12:49 clang-format*
-rwxr-xr-x 1 root wheel   671500 Oct 18 12:49 clang-tblgen*
-rwxr-xr-x 1 root wheel    49684 Oct 18 12:49 count*
-rwxr-xr-x 1 root wheel 22439396 Oct 18 12:49 llc*
-rwxr-xr-x 1 root wheel 10351388 Oct 18 12:49 lli*
-rwxr-xr-x 1 root wheel   208140 Oct 18 12:49 lli-child-target*
-rwxr-xr-x 1 root wheel  9144692 Oct 18 12:49 llvm-ar*
-rwxr-xr-x 1 root wheel  1619592 Oct 18 12:49 llvm-as*
-rwxr-xr-x 1 root wheel   155080 Oct 18 12:49 llvm-bcanalyzer*
-rwxr-xr-x 1 root wheel   120864 Oct 18 12:49 llvm-config*
-rwxr-xr-x 1 root wheel    92232 Oct 18 12:49 llvm-config-host*
-rwxr-xr-x 1 root wheel  1604600 Oct 18 12:49 llvm-cov*
-rwxr-xr-x 1 root wheel  1472656 Oct 18 12:49 llvm-cxxdump*
-rwxr-xr-x 1 root wheel  1471516 Oct 18 12:49 llvm-diff*
-rwxr-xr-x 1 root wheel  1225632 Oct 18 12:49 llvm-dis*
-rwxr-xr-x 1 root wheel 18342488 Oct 18 12:49 llvm-dsymutil*
-rwxr-xr-x 1 root wheel   419892 Oct 18 12:49 llvm-dwarfdump*
-rwxr-xr-x 1 root wheel  1686496 Oct 18 12:49 llvm-extract*
-rwxr-xr-x 1 root wheel  1800856 Oct 18 12:49 llvm-link*
-rwxr-xr-x 1 root wheel 10140692 Oct 18 12:49 llvm-mc*
-rwxr-xr-x 1 root wheel   138552 Oct 18 12:49 llvm-mcmarkup*
-rwxr-xr-x 1 root wheel  9144172 Oct 18 12:49 llvm-nm*
-rwxr-xr-x 1 root wheel 11554352 Oct 18 12:49 llvm-objdump*
-rwxr-xr-x 1 root wheel   220840 Oct 18 12:49 llvm-pdbdump*
-rwxr-xr-x 1 root wheel   469920 Oct 18 12:49 llvm-profdata*
-rwxr-xr-x 1 root wheel  9144692 Oct 18 12:49 llvm-ranlib*
-rwxr-xr-x 1 root wheel  1768528 Oct 18 12:49 llvm-readobj*
-rwxr-xr-x 1 root wheel  8388100 Oct 18 12:50 llvm-rtdyld*
-rwxr-xr-x 1 root wheel  1489124 Oct 18 12:50 llvm-size*
-rwxr-xr-x 1 root wheel  2106052 Oct 18 12:50 llvm-stress*
-rwxr-xr-x 1 root wheel  1610176 Oct 18 12:50 llvm-symbolizer*
-rwxr-xr-x 1 root wheel  1422732 Oct 18 12:50 llvm-tblgen*
-rwxr-xr-x 1 root wheel  1455516 Oct 18 12:50 macho-dump*
-rwxr-xr-x 1 root wheel    71184 Oct 18 12:50 not*
-rwxr-xr-x 1 root wheel  1620520 Oct 18 12:50 obj2yaml*
-rwxr-xr-x 1 root wheel 23007212 Oct 18 12:50 opt*
-rwxr-xr-x 1 root wheel  1768416 Oct 18 12:50 verify-uselistorder*
-rwxr-xr-x 1 root wheel   402360 Oct 18 12:50 yaml2obj*

解决方案
Install org.coolstar.cctools and org.coolstar.ld64 via Cydia.

Or, alternatively, build https://github.com/tpoechtrager/cctools-port by hand.

CXX="clang++ -arch arm64" CC="clang -arch arm64" ./configure --host=arm-apple-darwin11

                        
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