depends: Build capnp package with CMake

This change fixes the `capnp` package cross-compiling for the
`x86_64-w64-mingw32` and `arm64-apple-darwin` platforms.

Author: hebasto

depends/packages/capnp.mk

@@ -4,18 +4,15 @@ $(package)_download_path=$(native_$(package)_download_path)
 $(package)_download_file=$(native_$(package)_download_file)
 $(package)_file_name=$(native_$(package)_file_name)
 $(package)_sha256_hash=$(native_$(package)_sha256_hash)
-$(package)_dependencies=native_$(package)
 
 define $(package)_set_vars :=
-$(package)_config_opts := --with-external-capnp
-$(package)_config_opts += --without-openssl
-$(package)_config_opts += CAPNP="$$(native_capnp_prefixbin)/capnp"
-$(package)_config_opts += CAPNP_CXX="$$(native_capnp_prefixbin)/capnp-c++"
-$(package)_config_opts_android := --disable-shared
+$(package)_config_opts := -DBUILD_TESTING=OFF
+$(package)_config_opts += -DWITH_OPENSSL=OFF
+$(package)_config_opts += -DWITH_ZLIB=OFF
 endef
 
 define $(package)_config_cmds
-  $($(package)_autoconf)
+  $($(package)_cmake) .
 endef
 
 define $(package)_build_cmds
@@ -25,3 +22,7 @@ endef
 define $(package)_stage_cmds
   $(MAKE) DESTDIR=$($(package)_staging_dir) install
 endef
+
+define $(package)_postprocess_cmds
+  rm -rf lib/pkgconfig
+endef