armclang汇编警告

[Dozingfiretruck]

Xmake 版本

2.9.1

操作系统版本和架构

win10

描述问题

有 Warning: A3912W: Option 't' is deprecated. 警告，但是并未设置 t 参数

期待的结果

无警告

工程配置

armclang编译

附加信息和错误日志

Warning: A3912W: Option 't' is deprecated.

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Title: armclang assembly warning

[waruqi]

这个好像跟 xmake 没啥关系吧，你可以自己调下 flags ，看下为啥 armclang 会显示这个警告。。xmake 没有加其他 flags

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This seems to have nothing to do with xmake. You can adjust flags yourself to see why armclang displays this warning. . xmake does not add other flags

[Dozingfiretruck]

这个好像跟 xmake 没啥关系吧，你可以自己调下 flags ，看下为啥 armclang 会显示这个警告。。xmake 没有加其他 flags

重新捋了一遍确实不应该和xmake有关系，不是xmake加的，但是却报这个，ide里显示的汇编命令有

-mcpu=cortex-m3 -masm=auto  -Wa,armasm,--diag_suppress=A1950W -c
-gdwarf-4 -Wa,armasm,--pd,"__MICROLIB SETA 1"
 -Wa,armasm, -Wa,armasm,--pd,"AIR32F10X_MD SETA 1"

但是自己写这些命令其中

 -mcpu=cortex-m3 -masm=auto  -Wa,armasm,--diag_suppress=A1950W -c -gdwarf-4 -Wa,armasm,

都会报不识别
，命令中好像会把-后面的一个字母吞掉一样，没弄明白怎么回事

比如 -mcpu=cortex-m3

编译会报

会把-后面的一个字母吞掉，变成了 -cpu cortex-m3

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This seems to have nothing to do with xmake. You can adjust flags yourself to see why armclang displays this warning. . xmake does not add other flags

I checked it again and it really shouldn’t have anything to do with xmake. It wasn’t added by xmake, but it reported this. The assembly command displayed in the IDE is

-mcpu=cortex-m3 -masm=auto -Wa,armasm,--diag_suppress=A1950W -c
-gdwarf-4 -Wa,armasm,--pd,"__MICROLIB SETA 1"
 -Wa,armasm, -Wa,armasm,--pd,"AIR32F10X_MD SETA 1"

But write these commands yourself

 -mcpu=cortex-m3 -masm=auto -Wa,armasm,--diag_suppress=A1950W -c -gdwarf-4 -Wa,armasm,

Will report that it is not recognized
, the command seems to swallow the letter after -, I don’t understand what’s going on.

For example -mcpu=cortex-m3

Compilation report

It will swallow up the letter after - and become -cpu cortex-m3

[waruqi]

这也是 armasm 的问题，跟 xmake 好像也没啥关系

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This is also a problem with armasm, and it seems to have nothing to do with xmake.

[CofeCofe]

这个应该是使用的armasm编译器导致的，armasm编译器只支持-cpu -float。armclang也能作为汇编代码的编译器，对应到armclang下就是-mcpu -mfloat。不知道xmake中能不能显式指定汇编的编译器 @waruqi ，类似cmake中的
set(CMAKE_ASM_COMPILER armclang.exe)
这样应该能解决这个问题

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This should be caused by the armasm compiler used. The armasm compiler only supports -cpu -float. armclang can also be used as a compiler for assembly code, which corresponds to -mcpu -mfloat under armclang. I don’t know if it is possible to explicitly specify the assembly compiler in xmake @waruqi, similar to that in cmake
set(CMAKE_ASM_COMPILER armclang.exe)
This should solve the problem

[CofeCofe]

我也遇到相似的问题，将/xmake/安装/路径/toolchains/armclang/xmake.lua更改了

• 第32行set_toolset("as", "armasm")更改为set_toolset("as", "armclang")
• 第62行toolchain:add("asflags", "-cpu=" .. arch_cpu)更改为toolchain:add("asflags", "-mcpu=" .. arch_cpu)
  这样就将默认的汇编编译器切换为armclang了，重新运行xmake之后解决了。
  Arm Compiler 6.14之后才支持armasm语法，原有的xmake.lua可能需要增加一个对armclang版本的判断。

[waruqi]

第32行set_toolset("as", "armasm")更改为set_toolset("as", "armclang")

target 里面也有 set_toolset 接口的，或者直接 xmake f --as= ，或者自定义 toolchain

[Dozingfiretruck]

我也遇到相似的问题，将/xmake/安装/路径/toolchains/armclang/xmake.lua更改了

• 第32行set_toolset("as", "armasm")更改为set_toolset("as", "armclang")
• 第62行toolchain:add("asflags", "-cpu=" .. arch_cpu)更改为toolchain:add("asflags", "-mcpu=" .. arch_cpu)
  这样就将默认的汇编编译器切换为armclang了，重新运行xmake之后解决了。
  Arm Compiler 6.14之后才支持armasm语法，原有的xmake.lua可能需要增加一个对armclang版本的判断。

@waruqi 对armclang版本进行判断比较靠谱，跟随keil的行为

[waruqi]

可以直接来个 pr 过来，我暂时没这个 toolchain

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You can send a PR directly. I don’t have this toolchain yet.