Bug#841923: AW: AW: Bug#841923: libclang-common-3.9-dev: missing multilib binaries

[Sylvestre Ledru]

Le 01/11/2016 à 19:56, Norbert Lange a écrit :
> Hi,
>
> we absolutely should do this. I believe we have some communication
> problems, because I brought this up multiple times.
Probably me, sorry :/
> I am not sure how to solve it, I can think of multiple ways. But it
> would help if you just apply this path as it is, and let it build for
> the ~10 architectures. Can you do this somehow, maybe just keep it in
> experimental?
I don't think this is reasonable leave it as it.
I would like to see this changes in 3.8 and this will impact too much 
Debian.

So, we should find a proper solution.
However, I "only" saw the i386 files, not armel or others.
What should be the result on arm archs?

> First, it helps if we know we start with a working build (on all
> platforms) before modifying it, and which libraries would normally be
> built.
> Then I would like to be able to make a list of libraries for all
> architectures, since I believe this will differ alot.

$ debdiff  /tmp/libclang-common-3.8-dev_3.8.1-12_amd64.deb 
libclang-common-3.8-dev_3.8.1-13_amd64.deb
[The following lists of changes regard files as different if they have
different names, permissions or owners.]

Files in second .deb but not in first
-------------------------------------
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.asan-i386.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.asan-i386.so
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.asan-i686.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.asan-i686.so
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.asan-preinit-i386.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.asan-preinit-i686.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.asan_cxx-i386.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.asan_cxx-i686.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.builtins-i386.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.builtins-i686.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.cfi-i386.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.cfi-i686.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.cfi_diag-i386.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.cfi_diag-i686.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.profile-i386.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.profile-i686.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.safestack-i386.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.safestack-i686.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.ubsan_standalone-i386.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.ubsan_standalone-i686.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.ubsan_standalone_cxx-i386.a
-rw-r--r--  root/root 
/usr/lib/llvm-3.8/lib/clang/3.8.1/lib/linux/libclang_rt.ubsan_standalone_cxx-i686.a

this could be the opportunity to move them into a (or several) dedicated 
packages.

So, we could create:
libclang-sanitizer => with the libraries for the arch
and
libclang-sanitizer-multilib => with the libraries for the other 
supported archs (i386 for amd64, arm* for other I guess)

  I don't think we can use some voodoo-multiarch magic here :/

> Also (I brought this up before): I dont know if the shared sanitizer
> libraries are actually used anywhere. The static libraries dont make
> problems, so if we can drop the shared ones then this is one problem
> solved.
You are talking about libclang_rt.asan-i386.so and 
libclang_rt.asan-i686.so, right?

S