clang compilation failiure fix

[mccakit]

No description provided.

[vitaut]

Please provide more context including the full error and the repro command(s).

[mccakit]

Module directives aren't allowed inside the preprocessor.

[3/4] Building CXX object CMakeFiles/fmt.dir/src/fmt.cc.o FAILED: [code=1] CMakeFiles/fmt.dir/src/fmt.cc.o CMakeFiles/fmt.dir/fmt.pcm /home/mccakit/dev/llvm/bin/clang++ -I/home/mccakit/desktop/fmt/include -std=c++26 -nostdinc++ -nostdlib++ -isystem /home/mccakit/dev/libcxx/native/include/c++/v1 -O3 -DNDEBUG -fPIC -fvisibility=hidden -fvisibility-inlines-hidden -MD -MT CMakeFiles/fmt.dir/src/fmt.cc.o -MF CMakeFiles/fmt.dir/src/fmt.cc.o.d @CMakeFiles/fmt.dir/src/fmt.cc.o.modmap -o CMakeFiles/fmt.dir/src/fmt.cc.o -c /home/mccakit/desktop/fmt/src/fmt.cc /home/mccakit/desktop/fmt/src/fmt.cc:139:1: error: module directive lines are not allowed on lines controlled by preprocessor conditionals 139 | module :private; | ^~~~~~~~~~~~~~~~ 1 error generated. ninja: build stopped: subcommand failed. mccakit@mccakit-asus:~/desktop/fmt$

If gcc specific behavior is still desired, it should be moved to a new file.

This clang 23 with libc++ + compiler-rt from the same llvm source tree

[vitaut]

And what are the repro commands? Or, even better, do you have godbolt link?

[mccakit]

Very well, I will give the repo commands, and will look into godbolt.

What format do you want them in?
I can copy paste my Conan package recipe here, or give exact bash commands in order.

[vitaut]

Some self-contained form that only needs fmt checkout and standard build tooling (cmake and a C++ compiler), no conan. Bash commands are fine.