gcc.cpp.exe and gcc.cpp.linker not set when crosscompiling with mingw

[corenting]

When crosscompiling a project with using C++ interop (with importcpp) on Linux (targeting Windows with mingw), nim uses the wrong compiler (g++ instead of x86_64-w64-mingw32-g++).

The compilation then fails due to various import errors (missing Windows headers...)

Example

nimble --accept -d:mingw --cpu:amd64  -o:$(TARGET_NAME).exe cpp $(MAIN_SOURCE)

Output

Error: execution of an external compiler program '/usr/bin/g++ -c [...]

Possible Solution

By replacing my command with :

nimble --accept -d:mingw --cpu:amd64 --gcc.cpp.exe=x86_64-w64-mingw32-g++ --gcc.cpp.linkerexe=x86_64-w64-mingw32-g++ -o:$(TARGET_NAME).exe cpp $(MAIN_SOURCE)

the compilation works.

Additional Information

• I used choosenim to install nim, and I use nimble for my project
• My version :

$ nim -v
Nim Compiler Version 1.0.6 [Linux: amd64]