package/wpewebkit: use the CMAKE_NINJA flag

Use the newly introduce backend option to specify what cmake backend to
use, in lieue of special-coding its use as done in 78d499409f71
(package/wpewebkit: Build with ninja).

Signed-off-by: Thomas Devoogdt <thomas.devoogdt@barco.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/wpewebkit/wpewebkit.mk

@@ -18,6 +18,8 @@ WPEWEBKIT_DEPENDENCIES = host-gperf host-python3 host-ruby host-unifdef \
 	harfbuzz cairo icu jpeg libepoxy libgcrypt libgles libsoup libtasn1 \
 	libpng libxslt openjpeg wayland-protocols webp wpebackend-fdo
 
+WPEWEBKIT_CMAKE_BACKEND = ninja
+
 WPEWEBKIT_CONF_OPTS = \
 	-DPORT=WPE \
 	-DENABLE_ACCESSIBILITY=OFF \
@@ -104,23 +106,4 @@ ifeq ($(BR2_ARM_CPU_ARMV5)$(BR2_ARM_CPU_ARMV6)$(BR2_MIPS_CPU_MIPS32R6)$(BR2_MIPS
 WPEWEBKIT_CONF_OPTS += -DENABLE_JIT=OFF -DENABLE_C_LOOP=ON -DENABLE_SAMPLING_PROFILER=OFF
 endif
 
-# wpewebkit needs cmake >= 3.20 when building with the make backend, which is
-# above our minimal version in
-# support/dependencies/check-host-cmake.mk, so use the ninja backend:
-# https://github.com/WebKit/WebKit/commit/6cd89696b5d406c1a3d9a7a9bbb18fda9284fa1f
-WPEWEBKIT_CONF_OPTS += -GNinja
-WPEWEBKIT_DEPENDENCIES += host-ninja
-
-define WPEWEBKIT_BUILD_CMDS
-	$(TARGET_MAKE_ENV) $(BR2_CMAKE) --build $(WPEWEBKIT_BUILDDIR)
-endef
-
-define WPEWEBKIT_INSTALL_STAGING_CMDS
-	$(TARGET_MAKE_ENV) DESTDIR=$(STAGING_DIR) $(BR2_CMAKE) --install $(WPEWEBKIT_BUILDDIR)
-endef
-
-define WPEWEBKIT_INSTALL_TARGET_CMDS
-	$(TARGET_MAKE_ENV) DESTDIR=$(TARGET_DIR) $(BR2_CMAKE) --install $(WPEWEBKIT_BUILDDIR)
-endef
-
 $(eval $(cmake-package))