wayland: switch to Meson toolchain

- add patch to build wayland-scanner on host

packages/wayland/wayland/package.mk

@@ -7,33 +7,25 @@ PKG_SHA256="baccd902300d354581cd5ad3cc49daa4921d55fb416a5883e218750fef166d15"
 PKG_LICENSE="OSS"
 PKG_SITE="https://wayland.freedesktop.org/"
 PKG_URL="https://wayland.freedesktop.org/releases/${PKG_NAME}-${PKG_VERSION}.tar.xz"
-PKG_DEPENDS_TARGET="toolchain wayland:host libffi expat libxml2"
 PKG_DEPENDS_HOST="libffi:host expat:host libxml2:host"
+PKG_DEPENDS_TARGET="toolchain wayland:host libffi expat libxml2"
 PKG_LONGDESC="a display server protocol"
-PKG_TOOLCHAIN="configure"
 
-PKG_CONFIGURE_OPTS_HOST="--enable-shared \
-                         --disable-static \
-                         --disable-libraries \
-                         --disable-documentation \
-                         --with-gnu-ld"
+PKG_MESON_OPTS_HOST="-Dlibraries=false \
+                     -Dscanner=true \
+                     -Ddocumentation=false \
+                     -Ddtd_validation=false"
 
-PKG_CONFIGURE_OPTS_TARGET="--with-sysroot=${SYSROOT_PREFIX} \
-                           --with-host-scanner \
-                           --enable-shared \
-                           --disable-static \
-                           --enable-libraries \
-                           --disable-documentation \
-                           --with-gnu-ld"
+PKG_MESON_OPTS_TARGET="-Dlibraries=true \
+                       -Dscanner=false \
+                       -Ddocumentation=false \
+                       -Ddtd_validation=false"
 
 pre_configure_target() {
   # wayland does not build with NDEBUG (requires assert for tests)
-  export CFLAGS=$(echo ${CFLAGS} | sed -e "s|-DNDEBUG||g")
+  export TARGET_CFLAGS=$(echo ${TARGET_CFLAGS} | sed -e "s|-DNDEBUG||g")
 }
 
-post_makeinstall_target() {
-  rm -rf ${INSTALL}/usr/bin
-  rm -rf ${INSTALL}/usr/share
-
+post_makeinstall_host() {
   cp ${TOOLCHAIN}/lib/pkgconfig/wayland-scanner.pc ${SYSROOT_PREFIX}/usr/lib/pkgconfig/
 }

packages/wayland/wayland/patches/wayland-100.01-fix-wayland-scanner-build.patch

@@ -0,0 +1,12 @@
+--- /src/meson.build
++++ /src/meson.build
+@@ -58,7 +58,7 @@
+ 	)
+ endif
+ 
+-if meson.is_cross_build() or not get_option('scanner')
++if meson.is_cross_build() and get_option('libraries')
+ 	scanner_dep = dependency('wayland-scanner', native: true, version: meson.project_version())
+ 	wayland_scanner_for_build = find_program(scanner_dep.get_pkgconfig_variable('wayland_scanner'))
+ else
+