buildroot/package/pango/Config.in
Thomas Petazzoni e64573c47f cairo, harfbuzz: rework atomic dependencies
This commit handles the reverse dependency tree of cairo in terms of
atomic dependencies. There are two main changes:

 - cairo in fact no longer needs atomic operations. It can perfectly
   build without any __sync built-in, as was tested using an ARC
   toolchain without atomics, and a SPARC toolchain. Optionally, Cairo
   can use the __atomic builtins provided by gcc >= 4.7, so support
   for this is added as well. Thanks to this change, the
   BR2_ARCH_HAS_ATOMICS dependency is removed from cairo and all its
   reverse dependencies.

 - harfbuzz does require the __sync built-in for 4 bytes integers, so
   we add a dependency on BR2_TOOLCHAIN_HAS_SYNC_4 to harfbuzz and all
   its reverse dependency, the main one being the pango package. Due
   to this, the vast majority of gtk-related packages are moved to a
   dependency on BR2_ARCH_HAS_ATOMICS (which used to be due to cairo)
   to a dependency on BR2_TOOLCHAIN_HAS_SYNC_4 (due to pango ->
   harfbuzz).

In detail:

 - cairo

   Remove BR2_ARCH_HAS_ATOMICS dependency, link against -latomic when
   gcc >= 4.8 in order to use the __atomic functions.

 - harfbuzz

   Add dependency on BR2_TOOLCHAIN_HAS_SYNC_4

 - cairomm, gst-plugins-good, gst1-plugins-good, libgdiplus,
   libsvg-cairo, weston

   Remove BR2_ARCH_HAS_ATOMICS dependency (since cairo no longer needs
   atomics)

 - enlightenment, cwiid, gst-plugins-bad, gst-plugins-base,
   gst1-plugins-bad, gst1-plugins-base, gtkmm3,
   libevas-generic-loaders, libfm, libgail, libgtk2, libgtk3, librsvg,
   openbox, opencv, opencv3, pango, pangomm, pcmanfm, pinentry,
   rrdtool, webkit, webkitgtk24, xscreensaver

   Switch from a BR2_ARCH_HAS_ATOMICS dependency to a
   BR2_TOOLCHAIN_HAS_SYNC_4 (they depend on pango, harfbuzz, gtk, or
   some other related package)

 - directfb

   Remove BR2_ARCH_ATOMICS dependency of the BR2_PACKAGE_DIRECTFB_SVG
   (since cairo can build without atomics), but add a
   BR2_TOOLCHAIN_HAS_SYNC_4 dependency on BR2_PACKAGE_DIRECTFB itself
   since it does use __sync built-ins. This replaces the !BR2_sparc
   dependency.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2016-02-06 11:16:00 +01:00

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config BR2_PACKAGE_PANGO
bool "pango"
depends on BR2_USE_WCHAR # glib2
depends on BR2_TOOLCHAIN_HAS_THREADS # glib2
depends on BR2_USE_MMU # glib2
depends on BR2_INSTALL_LIBSTDCPP # freetype support
depends on BR2_TOOLCHAIN_HAS_SYNC_4 # harfbuzz
select BR2_PACKAGE_LIBGLIB2
select BR2_PACKAGE_EXPAT
select BR2_PACKAGE_CAIRO
select BR2_PACKAGE_FONTCONFIG
select BR2_PACKAGE_FREETYPE
select BR2_PACKAGE_HARFBUZZ
select BR2_PACKAGE_GETTEXT if BR2_NEEDS_GETTEXT_IF_LOCALE
select BR2_PACKAGE_XLIB_LIBX11 if BR2_PACKAGE_XORG7
help
Pango is a library for laying out and rendering of text, with an
emphasis on internationalization. Pango can be used anywhere that
text layout is needed, though most of the work on Pango so far has
been done in the context of the GTK+ widget toolkit. Pango forms the
core of text and font handling for GTK+-2.x.
http://www.pango.org/
comment "pango needs a toolchain w/ wchar, threads, C++"
depends on BR2_USE_MMU
depends on BR2_TOOLCHAIN_HAS_SYNC_4
depends on !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HAS_THREADS || \
!BR2_INSTALL_LIBSTDCPP