RPM macros in spec files are expanded even when within a comment. In the spec file for ntp-4.0.99k-13, the line "#%configure" is expanded and the results are executed. This causes configure to run twice.
I can verify that, and the package builds in spite of the bug in the spec file. However, #%configure is on a line by itself, and there are no other uses of the %configure macro within that spec file: # XXX work around for anal ntp configure %define _target_platform %{nil} #%configure CFLAGS="-g -DDEBUG" ./configure --prefix=/usr %undefine _target_platform
fixed in 4.0.99k-14 and later.