expat: convert to cmake

Allows faster compilation and a simpler Makefile.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

libs/expat/Makefile

@@ -7,7 +7,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=expat
 PKG_VERSION:=2.2.9
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
 PKG_SOURCE_URL:=@SF/expat
@@ -18,12 +18,12 @@ PKG_LICENSE:=MIT
 PKG_LICENSE_FILES:=COPYING
 PKG_CPE_ID:=cpe:/a:libexpat:expat
 
-PKG_FIXUP:=autoreconf
-PKG_INSTALL:=1
+CMAKE_INSTALL:=1
 PKG_BUILD_PARALLEL:=1
 
 include $(INCLUDE_DIR)/host-build.mk
 include $(INCLUDE_DIR)/package.mk
+include $(INCLUDE_DIR)/cmake.mk
 
 define Package/libexpat
   SECTION:=libs
@@ -36,30 +36,17 @@ define Package/libexpat/description
  A fast, non-validating, stream-oriented XML parsing library.
 endef
 
-TARGET_CFLAGS += $(FPIC)
-
-CONFIGURE_ARGS += \
-	--enable-shared \
-	--enable-static \
-	--without-docbook
-
-HOST_CONFIGURE_ARGS += \
-	--without-docbook
-
-define Host/Install
-	$(MAKE) -C $(HOST_BUILD_DIR) install
-endef
-
-define Build/InstallDev
-	$(INSTALL_DIR) $(1)/usr/include
-	$(CP) $(PKG_INSTALL_DIR)/usr/include/expat{,_external}.h $(1)/usr/include/
-
-	$(INSTALL_DIR) $(1)/usr/lib/pkgconfig
-	$(INSTALL_DATA) $(PKG_INSTALL_DIR)/usr/lib/pkgconfig/expat.pc $(1)/usr/lib/pkgconfig/
-
-	$(INSTALL_DIR) $(1)/usr/lib
-	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libexpat.{a,so*} $(1)/usr/lib/
-endef
+CMAKE_OPTIONS += \
+	-DDOCBOOK_TO_MAN=OFF \
+	-DEXPAT_BUILD_TOOLS=OFF \
+	-DEXPAT_BUILD_EXAMPLES=OFF \
+	-DEXPAT_BUILD_TESTS=OFF \
+	-DEXPAT_BUILD_DOCS=OFF \
+	-DEXPAT_WITH_LIBBSD=OFF \
+	-DEXPAT_ENABLE_INSTALL=ON \
+	-DEXPAT_DTD=OFF \
+	-DEXPAT_NS=OFF \
+	-DEXPAT_DEV_URANDOM=OFF
 
 define Package/libexpat/install
 	$(INSTALL_DIR) $(1)/usr/lib