On 10/14/2014 05:57 AM, Jerry James wrote:
On Mon, Oct 13, 2014 at 6:00 PM, Peter Robinson <pbrobinson@xxxxxxxxxxxxxxxxx> wrote:commit 1c07fc6e86ce11c81da77ac6c55b934594f25bee Author: Peter Robinson <pbrobinson@xxxxxxxxx> Date: Tue Oct 14 01:00:36 2014 +0100 Use generic macro to detect 64 bit platforms lapack.spec | 7 +++++-- 1 files changed, 5 insertions(+), 2 deletions(-) --- diff --git a/lapack.spec b/lapack.spec index 0be11ec..c323757 100644 --- a/lapack.spec +++ b/lapack.spec @@ -1,7 +1,7 @@ %global shortver 3 %global mediumver %{shortver}.5 -%ifarch x86_64 ppc64 +%if %{__isa_bits} == 64 %global arch64 1 %else %global arch64 0I have used this approach in some spec files myself, but I recently read that the %{__isa_bits} macro is not necessarily defined for all 64-bit platforms, just for those that are multiarch; i.e., that have a 32-bit variant [1].Is this true for Fedora? Do we support any platforms for which %{__isa_bits} is NOT defined?
[1] says no such thing, the isa macros are defined for all architectures except obviously noarch. Perhaps you're misinterpreting the example on 64bit package requiring a 32bit package which warns that not all 64bit architectures multiarch.
Even if we don't now, is there any possibility that we will in the future? It sure would be nice to have a macro we can rely on to distinguish between 32-bit and 64-bit platforms for some packages.
That is exactly what __isa_bits is for. - Panu -
Footnotes: [1] http://www.rpm.org/wiki/PackagerDocs/ArchDependencies
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