package/qt6/qt6svg: use the CMAKE_NINJA flag

Use the newly introduce backend option (4cf79d9b71ff5cf2aede3f21e09ade7c7ac59606)
to specify what cmake backend to use, instead of special-coding it's use.

Signed-off-by: Thomas Devoogdt <thomas@devoogdt.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/qt6/qt6svg/qt6svg.mk

@@ -10,6 +10,8 @@ QT6SVG_SOURCE = qtsvg-$(QT6_SOURCE_TARBALL_PREFIX)-$(QT6SVG_VERSION).tar.xz
 QT6SVG_INSTALL_STAGING = YES
 QT6SVG_SUPPORTS_IN_SOURCE_BUILD = NO
 
+QT6SVG_CMAKE_BACKEND = ninja
+
 QT6SVG_LICENSE = \
 	GPL-2.0+ or LGPL-3.0, \
 	GPL-3.0 with exception (tools), \
@@ -25,7 +27,6 @@ QT6SVG_LICENSE_FILES = \
 	LICENSES/Qt-GPL-exception-1.0.txt
 
 QT6SVG_CONF_OPTS = \
-	-GNinja \
 	-DQT_HOST_PATH=$(HOST_DIR) \
 	-DBUILD_WITH_PCH=OFF \
 	-DQT_BUILD_EXAMPLES=OFF \
@@ -33,19 +34,6 @@ QT6SVG_CONF_OPTS = \
 
 QT6SVG_DEPENDENCIES = \
 	host-pkgconf \
-	host-ninja \
 	qt6base
 
-define QT6SVG_BUILD_CMDS
-	$(TARGET_MAKE_ENV) $(BR2_CMAKE) --build $(QT6SVG_BUILDDIR)
-endef
-
-define QT6SVG_INSTALL_STAGING_CMDS
-	$(TARGET_MAKE_ENV) DESTDIR=$(STAGING_DIR) $(BR2_CMAKE) --install $(QT6SVG_BUILDDIR)
-endef
-
-define QT6SVG_INSTALL_TARGET_CMDS
-	$(TARGET_MAKE_ENV) DESTDIR=$(TARGET_DIR) $(BR2_CMAKE) --install $(QT6SVG_BUILDDIR)
-endef
-
 $(eval $(cmake-package))