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On Wednesday 07 Apr 2004 16:24, Corvus Corax wrote: |
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> probably the matter has been discussed earlier, but not recently, so |
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> please excuse me asking: |
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> |
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> i plan writing an ebuild for my little software project, motiontrack, |
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> (motiontrack.sf.net) which needs an image I/O library, either libGD |
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> or ImageMagick to compile. |
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> |
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> but it cant compile against both of them. |
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> |
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> if only one is present the configure script auto-detects the |
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> installed, and compiles with it, if there are both, configure prefers |
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> libGD since it might be faster, on the other hand ImageMagick |
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> provides better debug output when trying things out (view images on X |
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> screen ...) so configure's behaviour can be tweaked to force usage of |
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> Imagemagick even if GD is present (or visa versa) |
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> |
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> the obvious approach would be use-flags ;) , however there are a |
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> global useflag both for gd and imagemagick, and the problem persists |
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> if both are set. |
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> |
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> So is there to be an extra-lokal useflag? Or should it silently |
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> default to one of the libs? What is if libgd but not imagemagick is |
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> installed, but the imagemagick, and not gd useflag is set? compile |
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> with the installed libgd and ignore imagemagick? (nah, that would be |
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> stupid - or not?) should the ebuild read an env-var like openoffice |
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> does for the language? |
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> |
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> This all are questions i'd like to hear some opinions before trying |
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> to write an ebuild. |
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> |
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You can use a construction like this in your ebuild: |
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|
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DEPEND="libgd? ( >=media-libs/libgd-2.0.22 ) |
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imagemagick? ( >=media-gfx/imagemagick-5.5.7.15 )" |
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|
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That isn't the logic you want but you should be able to adapt it to your |
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case. The above statement means that at least one of libgd or |
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imagemagick is required. |
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|
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-- |
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Peter |
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======================================================================== |
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Gentoo Linux: Portage 2.0.50-r3. kernel-2.6.3-gentoo-r2. |
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i686 AMD Athlon(tm) XP 3200+. gcc(GCC): 3.3.2. |
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KDE: 3.2.1. Qt: 3.3.1. |
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======================================================================== |
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|
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-- |
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