叮当与无臂交叉编译

Clang cross-compilation with arm-none-eabi

本文关键字：交叉编译 叮当      更新时间：2023-10-16

我想对以下源文件进行交叉编译（Foo.cpp）

#include <cstdint>
int Foo()
{
   uint32_t bar = 0;
   return bar;  
}

在Windows 10系统上使用i686-W64-mingw32和arm-none-eabi。因此我使用以下批处理文件

@echo off
set "PATH=C:/MinGW/i686-8.1.0-release-win32-dwarf-rt_v6-rev0/bin;%PATH%"
set "PATH=C:/GNU-Tools-ARM-Embedded/7-2018-q2-update/bin;%PATH%"
set "PATH=C:/LLVM/7.0.0/bin;%PATH%"
clang++ ^
        -c ^
        -std=gnu++14 ^
        -v ^
        -target i686-w64-mingw32 ^
        Foo.cpp ^
        -o Foo.obj
@echo on
REM
REM 
REM 
REM 
REM
@echo off
clang++ ^
        -c ^
        -std=gnu++14 ^
        -v ^
        -target arm-none-eabi ^
        -march=armv6-m ^
        -mcpu=cortex-m0 ^
        -mthumb ^
        -msoft-float ^
        -mfloat-abi=soft ^
        --sysroot=C:/GNU-Tools-ARM-Embedded/7-2018-q2-update ^
        Foo.cpp ^
        -o Foo.o
pause

这将产生以下输出

clang version 7.0.0 (tags/RELEASE_700/final)
Target: i686-w64-windows-gnu
Thread model: posix
InstalledDir: C:LLVM7.0.0bin
 "C:\LLVM\7.0.0\bin\clang++.exe" -cc1 -triple i686-w64-windows-gnu -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -discard-value-names -main-file-name Foo.cpp -mrelocation-model static -mthread-model posix -mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases -target-cpu pentium4 -dwarf-column-info -debugger-tuning=gdb -v -coverage-notes-file "c:\Users\Zlatan\MKS\Test\Foo.gcno" -resource-dir "C:\LLVM\7.0.0\lib\clang\7.0.0" -internal-isystem "C:\MinGW\i686-8.1.0-release-win32-dwarf-rt_v6-rev0\i686-w64-mingw32\include\c++" -internal-isystem "C:\MinGW\i686-8.1.0-release-win32-dwarf-rt_v6-rev0\i686-w64-mingw32\include\c++\i686-w64-mingw32" -internal-isystem "C:\MinGW\i686-8.1.0-release-win32-dwarf-rt_v6-rev0\i686-w64-mingw32\include\c++\backward" -internal-isystem "C:\MinGW\i686-8.1.0-release-win32-dwarf-rt_v6-rev0\i686-w64-mingw32\include\c++\8.1.0" -internal-isystem "C:\MinGW\i686-8.1.0-release-win32-dwarf-rt_v6-rev0\i686-w64-mingw32\include\c++\8.1.0\i686-w64-mingw32" -internal-isystem "C:\MinGW\i686-8.1.0-release-win32-dwarf-rt_v6-rev0\i686-w64-mingw32\include\c++\8.1.0\backward" -internal-isystem "C:\MinGW\i686-8.1.0-release-win32-dwarf-rt_v6-rev0\include\c++\8.1.0" -internal-isystem "C:\MinGW\i686-8.1.0-release-win32-dwarf-rt_v6-rev0\include\c++\8.1.0\i686-w64-mingw32" -internal-isystem "C:\MinGW\i686-8.1.0-release-win32-dwarf-rt_v6-rev0\include\c++\8.1.0\backward" -internal-isystem "C:\MinGW\i686-8.1.0-release-win32-dwarf-rt_v6-rev0\lib\gcc\i686-w64-mingw32\8.1.0\include\c++" -internal-isystem "C:\MinGW\i686-8.1.0-release-win32-dwarf-rt_v6-rev0\lib\gcc\i686-w64-mingw32\8.1.0\include\c++\i686-w64-mingw32" -internal-isystem "C:\MinGW\i686-8.1.0-release-win32-dwarf-rt_v6-rev0\lib\gcc\i686-w64-mingw32\8.1.0\include\c++\backward" -internal-isystem "C:\LLVM\7.0.0\lib\clang\7.0.0\include" -internal-isystem "C:\MinGW\i686-8.1.0-release-win32-dwarf-rt_v6-rev0\i686-w64-mingw32/sys-root/mingw/include" -internal-isystem "C:\MinGW\i686-8.1.0-release-win32-dwarf-rt_v6-rev0\i686-w64-mingw32\include" -internal-isystem "C:\MinGW\i686-8.1.0-release-win32-dwarf-rt_v6-rev0\include" -std=gnu++14 -fdeprecated-macro -fdebug-compilation-dir "c:\Users\Zlatan\MKS\Test" -ferror-limit 19 -fmessage-length 227 -fno-use-cxa-atexit -fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdwarf-exceptions -fdiagnostics-show-option -fcolor-diagnostics -o Foo.obj -x c++ Foo.cpp
clang -cc1 version 7.0.0 based upon LLVM 7.0.0 default target x86_64-pc-win32
ignoring nonexistent directory "C:MinGWi686-8.1.0-release-win32-dwarf-rt_v6-rev0i686-w64-mingw32includec++"
ignoring nonexistent directory "C:MinGWi686-8.1.0-release-win32-dwarf-rt_v6-rev0i686-w64-mingw32includec++i686-w64-mingw32"
ignoring nonexistent directory "C:MinGWi686-8.1.0-release-win32-dwarf-rt_v6-rev0i686-w64-mingw32includec++backward"
ignoring nonexistent directory "C:MinGWi686-8.1.0-release-win32-dwarf-rt_v6-rev0i686-w64-mingw32includec++8.1.0"
ignoring nonexistent directory "C:MinGWi686-8.1.0-release-win32-dwarf-rt_v6-rev0i686-w64-mingw32includec++8.1.0i686-w64-mingw32"
ignoring nonexistent directory "C:MinGWi686-8.1.0-release-win32-dwarf-rt_v6-rev0i686-w64-mingw32includec++8.1.0backward"
ignoring nonexistent directory "C:MinGWi686-8.1.0-release-win32-dwarf-rt_v6-rev0includec++8.1.0"
ignoring nonexistent directory "C:MinGWi686-8.1.0-release-win32-dwarf-rt_v6-rev0includec++8.1.0i686-w64-mingw32"
ignoring nonexistent directory "C:MinGWi686-8.1.0-release-win32-dwarf-rt_v6-rev0includec++8.1.0backward"
ignoring nonexistent directory "C:MinGWi686-8.1.0-release-win32-dwarf-rt_v6-rev0i686-w64-mingw32/sys-root/mingw/include"
#include "..." search starts here:
#include <...> search starts here:
 C:MinGWi686-8.1.0-release-win32-dwarf-rt_v6-rev0libgcci686-w64-mingw328.1.0includec++
 C:MinGWi686-8.1.0-release-win32-dwarf-rt_v6-rev0libgcci686-w64-mingw328.1.0includec++i686-w64-mingw32
 C:MinGWi686-8.1.0-release-win32-dwarf-rt_v6-rev0libgcci686-w64-mingw328.1.0includec++backward
 C:LLVM7.0.0libclang7.0.0include
 C:MinGWi686-8.1.0-release-win32-dwarf-rt_v6-rev0i686-w64-mingw32include
 C:MinGWi686-8.1.0-release-win32-dwarf-rt_v6-rev0include
End of search list.
c:UsersZlatanMKSTest>REM
c:UsersZlatanMKSTest>REM
c:UsersZlatanMKSTest>REM
c:UsersZlatanMKSTest>REM
c:UsersZlatanMKSTest>REM
clang version 7.0.0 (tags/RELEASE_700/final)
Target: arm-none--eabi
Thread model: posix
InstalledDir: C:LLVM7.0.0bin
 "C:\LLVM\7.0.0\bin\clang++.exe" -cc1 -triple thumbv6m-none--eabi -emit-obj -mrelax-all -disable-free -disable-llvm-verifier -discard-value-names -main-file-name Foo.cpp -mrelocation-model static -mthread-model posix -mdisable-fp-elim -fmath-errno -mconstructor-aliases -nostdsysteminc -target-cpu cortex-m0 -target-feature +soft-float -target-feature +soft-float-abi -target-feature -crc -target-feature -dsp -target-feature -ras -target-feature -dotprod -target-feature -hwdiv-arm -target-feature -hwdiv -target-feature -fp-only-sp -target-feature -d16 -target-feature -vfp2 -target-feature -vfp3 -target-feature -fp16 -target-feature -vfp4 -target-feature -fp-armv8 -target-feature -neon -target-feature -crypto -target-feature +strict-align -target-abi aapcs -msoft-float -mfloat-abi soft -fallow-half-arguments-and-returns -dwarf-column-info -debugger-tuning=gdb -v -coverage-notes-file "c:\Users\Zlatan\MKS\Test\Foo.gcno" -resource-dir "C:\LLVM\7.0.0\lib\clang\7.0.0" -isysroot C:/GNU-Tools-ARM-Embedded/7-2018-q2-update -internal-isystem "C:/GNU-Tools-ARM-Embedded/7-2018-q2-update\include\c++\v1" -internal-isystem "C:\LLVM\7.0.0\lib\clang\7.0.0\include" -internal-isystem "C:/GNU-Tools-ARM-Embedded/7-2018-q2-update\include" -std=gnu++14 -fdeprecated-macro -fdebug-compilation-dir "c:\Users\Zlatan\MKS\Test" -ferror-limit 19 -fmessage-length 227 -fno-signed-char -fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -o Foo.o -x c++ Foo.cpp -faddrsig
clang -cc1 version 7.0.0 based upon LLVM 7.0.0 default target x86_64-pc-win32
ignoring nonexistent directory "C:/GNU-Tools-ARM-Embedded/7-2018-q2-updateincludec++v1"
ignoring nonexistent directory "C:/GNU-Tools-ARM-Embedded/7-2018-q2-updateinclude"
ignoring duplicate directory "C:LLVM7.0.0libclang7.0.0include"
#include "..." search starts here:
#include <...> search starts here:
 C:LLVM7.0.0libclang7.0.0include
End of search list.
Foo.cpp:1:10: fatal error: 'cstdint' file not found
#include <cstdint>
         ^~~~~~~~~
1 error generated.

因此，对于 i686-w64-mingw32，将编译器的位置放在路径上就足够了，但对于 arm-none-eabi，clang 编译器找不到交叉编译标头。

有人知道如何为无臂配置叮当吗？

为什么会出现以下情况？

目标：无臂--埃比

不应该吗？

目标：无臂

无臂

谢谢！

兹拉坦

我参加派对有点晚了，但无论如何这是我的两分钱：

--sysroot选项应为：

--sysroot=C:/GNU-Tools-ARM-Embedded/7-2018-q2-update/arm-none-eabi

您缺少最后的/arm-none-eabi部分。Clang 查找工具链arm-none-eabi子目录中的目录 bin 、 lib 和 include（请参阅此处的文档）。

这应该可以修复"忽略不存在的目录"错误和由于缺少标准库而导致的致命错误。

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