Hello all,
I was just looking around the /usr/lib/rpm/macros file at some of the
default macros and I had a question about macro syntax.
It seems the RPM_BUILD_DIR environment variable is defined as
RPM_BUILD_DIR=\"%{u2p:%{_builddir}}\"
I am having a hard time figuring out what the "u2p" part of that definition
means. %_builddir is defined earlier in the file. Is this the format of a
conditional macro? Or is this a builtin macro?
What about the following:
%___build_shell %{?_buildshell:%{_buildshell}}%{!?_buildshell:/bin/sh}
Does this say something along the lines of set %___build_shell to the value
of %_buildshell if it exists. If it doesn't exist, set the value to
/bin/sh?
Your help is very much appreciated.
Ben Piela
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