On Tue, 01 Mar 2005 19:37:33 -0600, Tom 'spot' Callaway wrote:
> Lets say I whip up some macros that define %{rhel}, %{fedora}, and
> %{rhl}, if they are relevant, with the appropriate numeric version.
>
> What would the conditionals look like?
Examples, assuming %rhel is defined only on Red Hat Enterprise Linux,
%fedora is defined only on Fedora Core, %rhl is defined only on Red Hat
Linux:
# Do something special for RHEL.
%if 0%{?rhel}
# ...
%endif
# Do something for FC4 and beyond.
%if "%fedora" >= "4"
# ...
%endif
# One-liners, here set a default switch.
%{?fedora:%define _with_xfce --with-xfce}
# Logical AND, do something for RHEL and RHL.
%if 0%{?rhel}
%if 0%{?rhl}
# ...
%endif
%endif
# Logical OR, do something for either RHL or Fedora.
%if 0%{?rhl}%{?fedora}
# ...
%endif
# Safer version, in case %rhl or %fedora expand to something non-numerical.
%if 0%{?rhl:1}%{?fedora:1}
# ...
%endif
# Logical NOT, don't do something for RHEL
%if 0%{!?rhel}
# ...
%endif
rpmbuild --rebuild --define "rhel 3" blubb.src.rpm
