Compiler program installed in Windows cannot recognize file path generated by Cmake in Cygwin.

Usage
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1

Environment description:

  • Cmake and Ninja installed in Cygwin
  • Compiler program (like mingw-gcc) installed in Windows

When I use cmake in cygwin to build a project, it will go error when running try-compile project for detecting compiler ABI info and features. The error log says the compiler cannot open source file.

I found it is caused by the source file path format. As camke is installed in cygwin, when build a project, it will generate files with path in cygwin format (like /cygdrive/e/home/user/path/to/project), but the compiler is installed in Windows, it can only recognize file path in Windows format (like E:/home/user/path/to/project).

Is there any methods to fix this error?

2

You cannot mix cygwin and non-cygwin programs if file paths are involved. Choose one or the other.

4

We have been able to use cygwin with the ARM mingw base compilers
there have been issues with cmake not using the the @ response files (there are workarounds for that) and some path work to allow /cydrive/c and /c to work transparently. (e.g. in cygwin bash, mkdir -p /cygdrive/c/cygdrive/c and create native symlinks or junctions in that directory to where the files really are )

also some work must be done to clean up the dependency paths generated from the mingw compilers

( just noticed you were using ninja, and we are using unix makefiles, but I think some of this may apply )