On Mon, 06 Aug 2012 23:00:33 +0800
P Purkayastha <[email protected]> wrote:
> On 08/06/2012 04:45 PM, Carsten Haitzler (The Rasterman) wrote:
> > actually both gentoo ebuild users and the tweakers end up on our
> > doorstep asking us for help with their tweaked builds. on our
> > irc/email lists. though it's nice to help - we help again and again
> > and repeat ourselves that those options are for people who know
> > exactly what they are doing with the option. if u dont know then
> > accept defaults without a --enable or --disable in sight. :) u do
> > more than that then deal with your own problems - they never do
> > though. we end up with them. so the future is many fewer options.
> > u'll be patching src to change things and that tends to be a
> > barrier high enough to keep the tweakers out :)
> >
>
> That's not quite true. At least with *good* ebuilds in current
> Gentoo. *Good* ebuilds themselves provides configure options such
> that the default configure options are sane. For example look at the
> default options for evas:
>
> ~ยป eix -e evas
> [I] media-libs/evas
> Available versions: (~)1.0.1 (~)1.1.0 (~)1.2.1
> (**)9999{tbz2}[1] {X altivec bidi +bmp +cache directfb doc +eet fbcon
> +fontconfig gif gles +ico +jpeg mmx nls opengl +png +ppm +psd sdl sse
> sse3 static-libs svg tga +threads tiff xcb xpm}
>
>
> You see all the + things? It means that those configure options (USE
> flags in Gentoo terminology) are all enabled by default and the rest
> are disabled by default.
Hmmm, not quite. Those are the defaults for the ebuild only.
The user may well have enabled several of those flags system-wide in
make.conf, such things as mmx, sdl, sse and xcb. In which case they
will be enabled regardless of what the ebuild says.
Better to look at other stuff in the ebuild, like this:
src_configure() {
if use X ; then
if use xcb ; then
ewarn "You have enabled both 'X' and 'xcb', so
we will use" ewarn "X as it's considered the most stable for evas"
fi
MY_ECONF="
--disable-software-xcb
$(use_enable opengl gl-xlib)
"
elif use xcb ; then
MY_ECONF="
--disable-gl-xlib
--enable-software-xcb
$(use_enable opengl gl-xcb)
"
else
MY_ECONF="
--disable-gl-xlib
--disable-software-xcb
--disable-gl-xcb
"
fi
# $(use_enable cache metric-cache)
# $(use_enable cache word-cache)
MY_ECONF+="
--disable-metric-cache
--disable-word-cache
$(use_enable altivec cpu-altivec)
$(use_enable bidi fribidi)
$(use_enable bmp image-loader-bmp)
$(use_enable bmp image-loader-wbmp)
$(use_enable directfb)
$(use_enable doc)
$(use_enable eet font-loader-eet)
$(use_enable eet image-loader-eet)
$(use_enable fbcon fb)
$(use_enable fontconfig)
$(use_enable gles gl-flavor-gles)
$(use_enable gles gles-variety-sgx)
$(use_enable gif image-loader-gif)
$(use_enable ico image-loader-ico)
$(use_enable jpeg image-loader-jpeg)
$(use_enable mmx cpu-mmx)
$(use_enable png image-loader-png)
$(use_enable ppm image-loader-pmaps)
$(use_enable psd image-loader-psd)
$(use_enable sdl software-sdl)
$(use_enable sse cpu-sse)
$(use_enable sse3 cpu-sse3)
$(use_enable svg image-loader-svg)
$(use_enable tga image-loader-tga)
$(use_enable tiff image-loader-tiff)
$(use_enable threads pthreads)
$(use_enable threads async-events)
$(use_enable threads async-preload)
$(use_enable threads async-render)
$(use_enable X software-xlib)
$(use_enable xpm image-loader-xpm)
--enable-evas-magic-debug \
--enable-static-software-generic \
--enable-buffer \
--enable-cpu-c \
--enable-scale-sample \
--enable-scale-smooth \
--enable-convert-8-rgb-332 \
--enable-convert-8-rgb-666 \
--enable-convert-8-rgb-232 \
--enable-convert-8-rgb-222 \
--enable-convert-8-rgb-221 \
--enable-convert-8-rgb-121 \
--enable-convert-8-rgb-111 \
--enable-convert-16-rgb-565 \
--enable-convert-16-rgb-555 \
--enable-convert-16-rgb-444 \
--enable-convert-16-rgb-rot-0 \
--enable-convert-16-rgb-rot-270 \
--enable-convert-16-rgb-rot-90 \
--enable-convert-24-rgb-888 \
--enable-convert-24-bgr-888 \
--enable-convert-32-rgb-8888 \
--enable-convert-32-rgbx-8888 \
--enable-convert-32-bgr-8888 \
--enable-convert-32-bgrx-8888 \
--enable-convert-32-rgb-rot-0 \
--enable-convert-32-rgb-rot-270 \
--enable-convert-32-rgb-rot-90 \
--enable-image-loader-generic \
--disable-image-loader-edb
--disable-static-software-16
--disable-software-16-x11"
enlightenment_src_configure
}
There may well be crap in there that makes Raster cringe.
> This means that if the user is not a ricer,
> then he/she will be compiling evas with just the options that are not
> likely to break evas. If the user is a ricer, he/she will tweak
> around with all the configure flags irrespective of the linux distro.
> Gentoo just makes this tweaking easier.
>
>
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--
Alan McKinnon
[email protected]
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