Re: [PATCH/RFC] dpkg-shlibdeps: ignore shell scripts

[Jonathan Nieder <jrnieder@gmail.com>]

Joey Hess wrote:

> And then, file is probably not the best test, the best test would be an
> identical one to that used by dpkg-shlibdeps. There have been some bugs
> because of this; not all of them are even fixed. #133092 is the best
> one.

Very interesting.  Hakan Ardo wrote:

| When building a package that contains .so files intended for a non-native
| architecture dh_shlibdeps will try to precess them and fail. Here is a
| simple patch that will make dh_shlibdeps ignore such files:
| 
| 72,73c72,73
| <               $ff=file "$file";
| <               if ($ff=~m/ELF/ && $ff!~/statically linked/) {
| ---
| >               $ff=ldd "$file";
| >               if ($ff !~ /not a dynamic executable/) {

So is_elf() isn’t a good enough test for this use case.  But the use
case seems very iffy to me.

I imagine that the tpkg-make tool allowed setting an arbitrary target
for the cross-compilers it built.  What about when the target happens
to coincide with the host?  Then you get dependencies you don’t want.

Probably when the dust settles, dpkg-shlibdeps will learn to create
appropriate multiarch dependencies, and paying attention to non-native
binaries that have not been explicitly excluded will not seem to be a
problem after all.

Jonathan