Fix missing brace that breaks build for LLVM < 10.x

[makise-homura]

Despite of the fact LLVM 9.x is unsupported anymore by llvm-cbe, it still probably works in most cases, if this brace is fixed.

I guess if there's a decision to forbid builds for any LLVM < 10.x, an #error should be there instead of such mistake. Still llvm-cbe seems to be working for me with LLVM 9.0.1, so I see no reason to put #error there instead of this fix.

Should fix issues #130 and #119.

[hikari-no-yume]

This may fix the build, but it's not checking for RelaxAll any more, which means it will be warning about -mc-relax-all regardless of whether it is set?

Can you see if it compiles if you have the same if (RelaxAll) { for LLVM 9 and below? Alternatively can you make it skip this warning entirely?

I don't really know what this code is doing though. I am surprised object files are mentioned here at all.

[makise-homura]

Yes, I noticed that warning, but thought it was something on my side, not LLVM and/or llvm-cbe.
I've checked LLVM-6, 7, 8, 9, 10, and 11 (every single version that Ubuntu 20.04 has), and figured out that RelaxAll is supported in 8 and 9 too, and using LLVM 6 or 7 does not allow llvm-cbe to build successfully, so I added a check for LLVM < 8 into CMakeLists.txt too, and used RelaxAll for every other version of LLVM < 10.

Checked unittests/CWriterTest and test/selectionsort, everything is performing normally on LLVM 8 to 11.

Also tried to build lzlib and plzip using llvm-cbe, lzlib builds and works perfectly (with any version of LLVM from 8 to 11), but I have no success on plzip: sometimes llvm-cbe just crashes, sometimes it produces types that have not been declared at all or variables that declared after being used. I'm gonna file a couple issues about that.

[hikari-no-yume]

Thanks, this looks good to me.

[makise-homura]

Thanks!