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On 10/27/03 Andrew Gaffney wrote: |
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> Mike Frysinger wrote: |
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> > On Tuesday 28 October 2003 10:04, Andrew Gaffney wrote: |
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> > |
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> >>Is there a quicker |
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> >>way to determine the USE flags on the fly? |
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> > |
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> > portageq envvar USE |
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> |
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> How does Portage determine USE? I assume it gets the default from |
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> '/etc/make.profile/make.defaults'. Does it then add any that are in |
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> '/etc/make.conf' and remove any that are in '/etc/make.conf' preceeded |
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> by a '-'? Is the same process then repeated for any USE that may be |
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> passed on the command line? |
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It's a bit more complex: It's adding the USE settings from make.globals, |
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make.defaults, make.conf and the environment (you can specify a |
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different order, but I don't think anybody is using that feature). Then |
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it has a big list like USE="foo bla -* bar foo -bar". So it iterates |
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over the space delimited elements, adds all flags without - to the final |
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list, removes flags with - from that list (if present) and clears the |
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list if it finds a -* (one exception is the x86/ppc/... flag, that is |
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always in the list). |
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Marius |
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-- |
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Public Key at http://www.genone.de/info/gpg-key.pub |
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|
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In the beginning, there was nothing. And God said, 'Let there be |
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Light.' And there was still nothing, but you could see a bit better. |
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