error: C++ preprocessor "/lib/cpp" fails sanity check

[ChrigiGee]

Description / Steps to reproduce the issue

I try to config xapian-core-1.4.26.
I install any are important by xapian.
always again i have this Error

Expected behavior

create files for make application

Actual behavior

checking how to run the C++ preprocessor... /lib/cpp
configure: error: in /c/Users/cschaer/Downloads/xapian-core-1.4.26/xapian-core-1.4.26': configure: error: C++ preprocessor "/lib/cpp" fails sanity check See config.log' for more details

in log i can't find much more info.

Verification

• I have verified that my MSYS2 is up-to-date before submitting the report (see https://www.msys2.org/docs/updating/)

Windows Version

MINGW64_NT-10.0-26100

MINGW environments affected

• MINGW64
• MINGW32
• UCRT64
• CLANG64
• CLANG32
• CLANGARM64

Are you willing to submit a PR?

OK

[Biswa96]

Please provide the steps to reproduce the issue.

[ChrigiGee]

execute $ ./configure

[Biswa96]

where should I run that command?

[ChrigiGee]

In the shell of mingw64, also I try in the shell of ucrt64
I delete mingw and reinstall, same error.
I delete the full directory of the zip of xapian and unzip again. Same error again.
I update to the newest one of mingw by the update script himself.
Always the same error.

config.log

[revelator]

ran into this quite a few times with the older gcc versions, in essence it looks for the c preprocessor in the wrong directory and there are numerous reasons this can happen.

A: the package or source you are trying to build is trying to use the Msys2 compiler instead of the MinGW compiler (minor fix try uninstalling Msys2 gcc and binutils eg. pacman -R gcc binutils).

B: something went wrong when the MinGW compiler was built and it broke it's internal paths (no fix except figuring out what broke it).

C: some other thing might have broken path handling (usually because you have multiple compilers on path. Fixing this can be quite annoying as you have to check the %PATH% variable for compilers that might interfere eg. echo %PATH% should give you a list of things on path. run this in windows command shell not the Msys2 shell. if you dont want to mess with how you have it set up comment this in the compiler.ini file -> MSYS2_PATH_TYPE=inherit so it becomes #MSYS2_PATH_TYPE=inherit, this should remove everything from path except windows system dirs).

[revelator]

one strange thing why is the compiler installed here ?? -> H:\Programme\msys64.
you should use as short a path as possible due to the shell not handling long paths all to well, preferable in the standard location eg. C:\Msys64