LLVM 18.1.0 release have rc suffix

[SuperSodaSea]

It seems that the LLVM 18.1.0 release still have an rc suffix:

llvm-project/llvm/CMakeLists.txt

Lines 27 to 29 in 461274b

	if(NOT DEFINED LLVM_VERSION_SUFFIX)
	set(LLVM_VERSION_SUFFIX rc)
	endif()

The rc suffix will show up in the version info:

$ clang -v
clang version 18.1.0rc

It also shows up in the documentation:

https://releases.llvm.org/18.1.0/tools/clang/docs/ReleaseNotes.html

Clang 18.1.0rc documentation

Is this intentional or a mistake?

[dtcxzyw]

cc @tstellar

[Endilll]

Is this intentional or a mistake?

IIRC 17.0.0 had the same issue, and was quickly followed by 17.0.1.

[tstellar]

Sorry I missed this. I'm still deciding whether to do an immediate 18.1.1 or wait two weeks as currently planned.

[Endilll]

@tstellar In case it's important for your decision, Clang 18 seems to have a serious CodeGen regression: #84178

[debohman]

I noticed this, too. I caught it while cmake was running, so I just fixed the llvm/CMakeLists.txt and then reran cmake from scratch. It is building now.

[finagolfin]

I am seeing this in the upcoming Termux release too, termux/termux-packages#19399, which runs natively on Android devices.

> clang --version
clang version 18.1.0rc
Target: aarch64-unknown-linux-android24
Thread model: posix
InstalledDir: /data/data/com.termux/files/usr/bin
> ls -l /data/data/com.termux/files/usr/lib/libLLVM*so*
lrwxrwxrwx 1 u0_a318 u0_a318        22 Mar  7 08:03 /data/data/com.termux/files/usr/lib/libLLVM-18rc.so -> libLLVM.so.18.1rc
-rw------- 1 u0_a318 u0_a318 114521088 Mar  6 21:27 /data/data/com.termux/files/usr/lib/libLLVM.so

[MehdiChinoune]

A simple workaround is to pass -DLLVM_VERSION_SUFFIX="" to cmake.

[andypost]

It was fixed via b92012c in 18.1.1