How to make .spec Requires for libXXX.so.VER

[Jan Kratochvil]

On Tue, 29 Sep 2015 14:32:06 +0200, Sérgio Basto wrote:
> On Seg, 2015-09-28 at 09:11 +0200, Jan Kratochvil wrote:
> > This works for Requires (or Recommends) but not for BuildRequires:
> 
> Sorry if it is off-topic ... 
> I got a similar question, I just tested and the following works in
> copr  :
> 
> %ifarch x86_64
> BuildRequires:  libstdc++-static(x86-32) glibc(x86-32) glibc-devel(x86-32) libgcc(x86-32)
> BuildRequires:  libstdc++-static(x86-64)
> %else
> BuildRequires:  libstdc++-static
> %endif

In most cases - such as rpmbuild, mock or koji it works.

But it does not work in Koschei which is how I found this problem:
	https://github.com/msimacek/koschei/issues/54

And no matter where it works or not it is officially incorrect:
	https://fedoraproject.org/wiki/Packaging:Guidelines#BuildRequires_and_.25.7B_isa.7D

So I have created in gdb.spec at least:
	# --with buildisa: Use %%{?_isa} for BuildRequires

so that I still can benefit from proper BuildRequires myself but it cannot be
arch-specific by default anymore.

arch-BuildRequires are even essential for testsuite which does test cross-arch
debugging and needs the other-arch packages installed:
	%if 0%{?_with_testsuite:1}
	BuildRequires: glibc-devel%{bits_local} glibc-devel%{bits_other}
	BuildRequires: libgcc%{bits_local} libgcc%{bits_other}
	%endif # 0%{?_with_testsuite:1}


Jan