define versus global !?

[Farkas Levente]

hi,
sorry for cross posting but may be someone on the packaging/rpm side can
help me. i'm getting really angry about the debug packages:-)
does anybody who can tell me the real reason of why:
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%define __debug_install_post %{mingw_debug_install_post}
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works why
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%global __debug_install_post %{mingw_debug_install_post}
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not?
imho if i can know the answer to this question i can solve my only
remaining issue with generated spec file for mingw.
if why this in the spec file working:
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%define __debug_install_post %{mingw_debug_install_post}
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while this not:
test:
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echo "%define __debug_install_post %{mingw_debug_install_post}"
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and in the spec file:
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%global test sh /tmp/test
%{expand:%(%{test})}
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???
the same thing is working for all other macro except for
__debug_install_post.
thanks in advance.
regards.

-- 
  Levente                               "Si vis pacem para bellum!"