Bug#1115731: llvm-toolchain: please make some improvements to the build doc/scripts

[Marc Dequènes (duck)]

Source: llvm-toolchain-19
Version: 1:19.1.7-6
Severity: wishlist


Quack,

Due to #1115194 I wanted to rebuild llvm myself but that did not go so 
well.

Running ./19/debian/orig-tar.sh to get the sources ends-up in:
Compressing to llvm-toolchain-19_19.1.7.orig.tar.xz
./19/debian/orig-tar.sh: 168: time: not found

The documentation mentions prefixing the command with sh but `time` is 
not available in dash apparently and bash (or some other shell) is 
needed.

Then the script does a dch as Sylvestre Ledru, so clearly this script is 
not really meant to be used by any other; I was expecting to just get 
the sources and be able to run sbuild right after.

But anyway building fails too:
dpkg-source: info: building llvm-toolchain-19 using existing 
./llvm-toolchain-19_19.1.7.orig.tar.xz
dpkg-source: info: using patch list from debian/patches/series
dpkg-source: info: the patch has fuzz which is not allowed, or is 
malformed
dpkg-source: info: if patch 'powerpc-fix-sigill.diff' is correctly 
applied by quilt, use 'quilt refresh' to update it
dpkg-source: info: if the file is present in the unpacked source, make 
sure it is also present in the orig tarball
dpkg-source: error: cannot read 
19.orig.dowxPV/debian/patches/powerpc-fix-sigill.diff: No such file or 
directory

debian/patches/powerpc-fix-sigill.diff does not exist, but 
debian/patches/powerpc-fix-SIGILL.diff does, are you working on a case 
insensitive filesystem?

I renamed the file and the build started but I also noted patches seem 
to already be applied without setting the .pc metadata, so using quilt 
is impossible; I'm not really sure how you manage patches but 
fortunately my changes did not conflict with any patch and the build was 
able to proceed. It would be nice to clarify how it should be done.

That is to say: I really appreciated finding docs in debian/README 
because the build steps are very specific to this package but there's a 
few things that could make things easier to external contributors.

Regards.
\_o<

-- 
Marc Dequènes