[Buildroot] [PATCH v2 2/2] qt5base: make harfbuzz support selectable

[Peter Seiderer <ps.report@gmx.net>]

If selected use:

 - system/buildroot harfbuzz in case __sync for 4 bytes is supported
 - qt harfbuzz otherwise (using QAtomic instead)

Signed-off-by: Peter Seiderer <ps.report@gmx.net>
---
Changes v1 -> v2:
 - make harfbuzz support selectable, preferre the system provided
   one, but fall back to qt provided one
---
 package/qt5/qt5base/Config.in  |  9 +++++++++
 package/qt5/qt5base/qt5base.mk | 14 ++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/package/qt5/qt5base/Config.in b/package/qt5/qt5base/Config.in
index 337dcf245..27f225026 100644
--- a/package/qt5/qt5base/Config.in
+++ b/package/qt5/qt5base/Config.in
@@ -239,6 +239,15 @@ config BR2_PACKAGE_QT5BASE_FONTCONFIG
 	  This option enables Fontconfig and Freetype support using
 	  the system fontconfig and freetype2 libraries.
 
+config BR2_PACKAGE_QT5BASE_HARFBUZZ
+	bool "harfbuzz support"
+	select BR2_PACKAGE_HARFBUZZ if BR2_TOOLCHAIN_HAS_SYNC_4
+	help
+	  This option enables HarfBuzz support (either system
+	  harfbuzz if the toolchain supports __sync for 4 bytes
+	  or qt provided one which avoids this dependenc by using
+	  QAtomic).
+
 config BR2_PACKAGE_QT5BASE_GIF
 	bool "GIF support"
 	help
diff --git a/package/qt5/qt5base/qt5base.mk b/package/qt5/qt5base/qt5base.mk
index 3825f5bcc..187388e19 100644
--- a/package/qt5/qt5base/qt5base.mk
+++ b/package/qt5/qt5base/qt5base.mk
@@ -105,6 +105,20 @@ ifeq ($(BR2_PACKAGE_QT5_VERSION_5_6),y)
 QT5BASE_CONFIGURE_OPTS += -I$(STAGING_DIR)/usr/include/freetype2
 endif
 QT5BASE_DEPENDENCIES   += $(if $(BR2_PACKAGE_QT5BASE_GUI),freetype)
+ifeq ($(BR2_PACKAGE_QT5BASE_GUI)$(BR2_PACKAGE_QT5BASE_HARFBUZZ),yy)
+ifeq ($(BR2_TOOLCHAIN_HAS_SYNC_4),y)
+# system harfbuzz in case __sync for 4 bytes is supported
+QT5BASE_CONFIGURE_OPTS += -system-harfbuzz
+QT5BASE_DEPENDENCIES   += harfbuzz
+else
+# qt harfbuzz otherwise (using QAtomic instead)
+QT5BASE_CONFIGURE_OPTS += -qt-harfbuzz
+QT5BASE_LICENSE := $(QT5BASE_LICENSE), MIT (harfbuzz)
+QT5BASE_LICENSE_FILES += src/3rdparty/harfbuzz-ng/COPYING
+endif
+else
+QT5BASE_CONFIGURE_OPTS   += -no-harfbuzz
+endif
 QT5BASE_CONFIGURE_OPTS += $(if $(BR2_PACKAGE_QT5BASE_WIDGETS),-widgets,-no-widgets)
 QT5BASE_CONFIGURE_OPTS += $(if $(BR2_PACKAGE_QT5BASE_LINUXFB),--enable-linuxfb,-no-linuxfb)
 QT5BASE_CONFIGURE_OPTS += $(if $(BR2_PACKAGE_QT5BASE_DIRECTFB),-directfb,-no-directfb)
-- 
2.11.0