为什么nasm找不到cmake的include语句

问题描述：

我有一个正在使用的模块化引导加载程序.我觉得将其设置为使用气体比将nasm移植到cmake更加痛苦.似乎不是那样.NAsm无法找到包含文件.我想念什么?

I have a modular boot loader i'm toying with. I felt it would be more of a pain setting it up to use gas than to port nasm to cmake. It seems not to be that way. NAsm is unable to find the include file. What am I missing?

完整代码可在此Github存储库

这是项目布局:

.
├── CMakeLists.txt
└── Failing_module
    ├── CMakeLists.txt
    ├── Print.inc
    └── Stage1
        └── Stage1.asm

./CMakeLists.txt:

cmake_minimum_required(VERSION 3.6)
project(fails C ASM_NASM)
add_subdirectory(Failing_module)

Failing_module/CMakeLists.txt:

enable_language(ASM_NASM)
set(CMAKE_ASM_NASM_OBJECT_FORMAT bin)

set(module_SRCS Stage1/Stage1.asm)

set(CMAKE_NASM_LINK_EXECUTABLE nasm)
add_executable(Stage1.bin ${module_SRCS})
set_target_properties(Stage1.bin PROPERTIES LINKER_LANGUAGE NASM)
install(TARGETS Stage1.bin DESTINATION bin)

Failing_module/Stage1/Stage1.asm:

bits 16

jmp main

%include "Print.inc"
msgHello db "Hello World", 0x00

main:
    mov s, msgHello
    call Print

Failing_module/Print.inc

Print:
    lodsb
    or  al, al
    jz  PrintDone
    mov ah, 0x0E
    int 0x10
    jmp Print
PrintDone:
    ret

cmake的输出如下:

The output of cmake is the following:

Failing_module/Stage1/Stage1.asm:6: fatal: unable to open include file `Print.inc'
make[2]: *** [Failing_module/CMakeFiles/Stage1.bin.dir/build.make:63:  Failing_module/CMakeFiles/Stage1.bin.dir/Stage1/Stage1.asm.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:86: Failing_module/CMakeFiles/Stage1.bin.dir/all] Error 2
make: *** [Makefile:128: all] Error 2

EDIT 现在应通过手动方式进行编译.这使其成为SSCCE

EDIT Should compile by manual means now. This makes it a SSCCE

答

我相信这里的问题是CMake中的某些严格性与NASM中的缺陷相互作用不佳.CMake坚称搜索路径(例如％include 路径)不带斜杠. nasm 坚持认为搜索路径(带 -I 选项)的末尾有斜杠.CMake不会被更改；其开发人员不会将其视为CMake错误.它们是正确的: nasm 不应该坚持包含路径带有斜杠. nasm 故障已经有好几年了

I believe the problem here is that some strictness in CMake interacts poorly with a flaw in NASM. CMake insists that search paths (such as %include paths) do not have a trailing slash. nasm insists that search paths (given with a -I option) do have a trailing slash. CMake won't be changed; its developers do not regard this as a CMake bug. They are right: nasm should not insist that include paths have a trailing slash. The nasm fault has been known for several years.

我设法通过将搜索路径隐藏为常规编译选项来解决此问题:

I managed to work around this issue by hiding the search path as a normal compile option:

 add_compile_options(-I ${CMAKE_CURRENT_SOURCE_DIR}/ )
 add_library( my_lib STATIC "my_source.asm" )

为什么nasm找不到cmake的include语句

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