[Buildroot] [PATCH] libass: allow compilation without a system font provider
Yann E. MORIN
yann.morin.1998 at free.fr
Wed Dec 9 17:28:13 UTC 2015
Vicente, All,
On 2015-12-09 10:19 +0000, Vicente Olivert Riera spake thusly:
> On 08/12/15 17:16, Yann E. MORIN wrote:
> > On 2015-12-07 16:19 +0000, Vicente Olivert Riera spake thusly:
> >> If no system font provider is provided, then libass will fail to build
> >> because it requires one by default. The error looks like this:
> >>
> >> configure: error: Either DirectWrite (on Windows), CoreText (on OSX), or
> >> Fontconfig(Linux, other) is required. If you really want to compile
> >> withouta system font provider, add
> >> --disable-require-system-font-provider
> >>
> >> But, as the error messages says, we can allow the compilation without a
> >> system font provider if we use the above configure option, so let's do
> >> it.
> >>
> >> Fixes:
> >>
> >> http://autobuild.buildroot.net/results/3a4/3a4c07a0a54d5497fa8a4be2191856e286729637/
> >>
> >> Signed-off-by: Vicente Olivert Riera <Vincent.Riera at imgtec.com>
> >> ---
> >> package/libass/libass.mk | 3 +++
> >> 1 file changed, 3 insertions(+)
> >>
> >> diff --git a/package/libass/libass.mk b/package/libass/libass.mk
> >> index 83939e2..f1ec503 100644
> >> --- a/package/libass/libass.mk
> >> +++ b/package/libass/libass.mk
> >> @@ -24,6 +24,9 @@ ifeq ($(BR2_i386)$(BR2_x86_64),y)
> >> LIBASS_DEPENDENCIES += host-yasm
> >> endif
> >>
> >> +# Allow compilation without a system font provider
> >> +LIBASS_CONF_OPTS = --disable-require-system-font-provider
> >
> > It is my understanding that fontconfig *is* a "system font provider", so
> > maybe that should go n the else-case for fontconfig, below?
> >
> >> ifeq ($(BR2_PACKAGE_FONTCONFIG),y)
> >> LIBASS_DEPENDENCIES += fontconfig
> >> LIBASS_CONF_OPTS += --enable-fontconfig
> > Here:
> >
> > else
> > LIBASS_CONF_OPTS += \
> > --disable-fontconfig \
> > --disable-require-system-font-provider
> > endif
>
> That was my first approach, but then I thought a bit more about it, and
> I realized that there could be more system font providers in the future
> (not only fontconfig). So, by using that option we enable the
> possibility to build libass without a system font provider. That doesn't
> mean necessarily that libass will be built without one. If the
> fontconfig package is selected, it will be built with support for it.
But since that is currently not the case (i.e. we have a single font
provider), I think we should do as I suggest. When/if we have another
font provider, then we can revisit that at that time.
And I don't know what other font provider we'd have on Linux, beside
fontconfig. Arguably, I'm not a font expert either! ;-)
Regards,
Yann E. MORIN.
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