On 01/13/2015 12:06 PM, Vít Ondruch wrote:
Dne 13.1.2015 v 08:12 Ralf Corsepius napsal(a):
So we are even not able to tell how many packages are written in C or
C++ in Fedora, since we do not have the BuildRequires speficied
correctly.
Correct.
Because we have still the false feeling that everything is in
C/C++, we regularly doing mass rebuilds and wasting resources (mass
rebuild has also different advantages, but the rebuild due to rebased
GCC is the major one).
There are other reasons for mass-rebuilds. Most prominently: Changes
inside of rpm and rpm-macros.
So lets try to find what is written in C/C++ by some different way. Is
that true, that every package in C/C++ compiled using gcc depends on
glibc? Then we can use this query to get the number of packages:
$ repoquery --source --whatrequires 'libc.so.6(GLIBC_2.4)(64bit)' | sort
| uniq | wc -l
2834
Well, ... any explanation why this figure differs significantly from
this brute force estimate [1]:
# rpm -q --qf "%{SOURCERPM}\n" \
-p rawhide/i386/os/Packages/*/*.i686.rpm 2>/dev/null | sort -u | wc -l
7706
Ralf
[1] Counting the unique src.rpms of all binary rpms in a local rawhide
mirror.
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