RFD: C/C++ template packages
On 10/15/2012 01:03 PM, Paul Howarth wrote:
On 2012-10-15 11:05, Ralf Corsepius wrote:
Fedora carries some "C/C++" "template"/"header-only" packages
(Packages which contain C/C++-headers only).
Typically, these packages are being built "BuildArch: noarch".
== These packages are supposed to be arch-independent.
In reality, many of these packages often are wrapper headers, trying
to wrap to something highly OS-/arch-dependent, from system-headers
and compiler built-ins defines.
I.e. though these packages are supposed to be arch-independent, there
is no guarantee nor check whether these packages actually are
I am proposing to:
All "C/C++-template/header-only packages" must be built using an
"arch'ed BuildArch", with the resulting binary packages implemented as
- This would assure such packages would be built on all architectures
Fedora supports and not only the architecture noarch-packages are
- This would exercise potentially existing configuration-scripts on
all architectures and would allow to exercise test-scripts rsp. coding
examples (which can be regarded as compilation-checks) on all Fedora
If the packages do turn out to be arch-specific (e.g. different
constants for different architectures), the use of noarch subpackages
would cause the build to fail, which _would_ be a good thing. To fix
that, the packager would either have to use tricks like the ones often
found to provide multi-arch support for library-config scripts, or
making the packages arch-specific, which would probably result in
multi-arch conflicts unless the install paths were made arch-specific too.
So I think this is a good plan except I wouldn't make the use of noarch
subpackages a MUST - it would be OK to have them arch-specific as long
as they didn't have multi-arch conflicts (so for example i386 and x86_64
could be installed in parallel).
Good point - My proposal needs refinements ;)
In my posting above, I am referring to "C/C++-template/headers-only"
which currently are shipped or about to be shipped "noarch" in Fedora .
 Background of this RFD is me having tripped over such "lack of
generality" bug when activating the code-examples and test-building such
a noarched "C-/C++-header-only" package in a i386-mock instead of
x86_64-environment, some weeks ago (Unfortunately, ATM, I don't recall
which package it was.)
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