Re: [dpdk-dev] [PATCH] build: fix soname info for 19.11 compatiblity

[Bruce Richardson <bruce.richardson@intel.com>]

On Wed, Dec 11, 2019 at 11:15:29AM +0000, Ferruh Yigit wrote:
> On 12/11/2019 10:26 AM, Bruce Richardson wrote:
> > The soname for each stable ABI version should be just the ABI version major
> > number without the minor number. Unfortunately both major and minor were
> > used causing version 20.1 to be incompatible with 20.0.
> > 
> > This patch fixes the issue by switching from 2-part to 3-part ABI version
> > numbers so that we can keep 20.0 as soname and using the final digits to
> > identify the 20.x releases which are ABI compatible. This requires changes
> > to both make and meson builds to handle the three-digit version and shrink
> > it to 2-digit for soname.
> 
> What about following, does it makes file names better?
> 
> DPDK_20.02 (ABI_20.1):
>  SONAME: .so.20.0
>  library name: .so.20.1
>  .so.20.0 --> .so.20.1
>  .so --> .so.20.1
> 
> 
> DPDK_20.05 (ABI_20.2):
>  SONAME: .so.20.0
>  library name: .so.20.2
>  .so.20.0 --> .so.20.2
>  .so --> .so.20.2
> 
> 
Personally, I really don't like having symlinks for libraries with the same
"level" of version number, i.e. while linking from 20.0 -> 20.0.1 is fine,
linking from 20.1 to 20.0 seems wrong, and would also potentially cause
issues with having 19.11 installed in parallel to another version.

/Bruce