On 12/16/06, Marcus Habermehl (BMH1980) <bmh1980de@xxxxxxxx> wrote:
And this is the code from my /etc/rpm/macros file.
%ifdef %{prefix}
%_prefix %{prefix}
%else
%_prefix /usr
%endif
If in /etc/rpm/macros, existence tests are tricky, recursion on macros
needs to be avoided.
Your example looks like
%_prefix %{?prefix}%{!?prefix:/usr}
in /etc/rpm/macros.
In a spec file, the above would look like
%define _prefix %{?prefix}%{!?prefix:/usr}
of (arguably more readable but using %if)
%if %{?prefix:1}0
%define _prefix %{prefix}
%else
%define _prefix /usr
%endif
Note that %prefix is set as a side effect of Prefix: parsing, just
like Name: sets %name, Version sets %version, etc, etc.
73 de Jeff
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