Add support for RK3576 platform and restructure vendor packages directory

cross_compile/vendor/packages/ceres_vendor/CMakeLists.txt

@@ -0,0 +1,30 @@
+cmake_minimum_required(VERSION 3.8)
+project(ceres_vendor)
+
+
+if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+  add_compile_options(-Wall -Wextra -Wpedantic)
+endif()
+
+# uncomment the following section in order to fill in
+# further dependencies manually.
+# find_package(<dependency> REQUIRED)
+
+
+include(FetchContent)
+FetchContent_Declare(
+  ceres_vendor
+  URL https://github.com/ceres-solver/ceres-solver/archive/refs/tags/2.1.0.tar.gz
+  # SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/ext/
+)
+
+set(MINIGLOG ON CACHE BOOL "Use a stripped down version of glog." FORCE)
+set(GFLAGS OFF CACHE BOOL "Enable Google Flags." FORCE)
+set(BUILD_SHARED_LIBS ON CACHE BOOL "Build Shared Library" FORCE)
+set(BUILD_EXAMPLES OFF CACHE BOOL "BUILD_EXAMPLES" FORCE)
+set(BUILD_TESTING OFF CACHE BOOL "BUILD_TESTING" FORCE)
+set(BUILD_BENCHMARKS OFF CACHE BOOL "BUILD_BENCHMARKS" FORCE)
+set(CMAKE_BUILD_TYPE Release)
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DMAX_LOG_LEVEL=-1")
+
+FetchContent_MakeAvailable(ceres_vendor)

cross_compile/vendor/packages/ceres_vendor/package.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0"?>
+<?xml-model href="http://download.ros.org/schema/package_format3.xsd" schematypens="http://www.w3.org/2001/XMLSchema"?>
+<package format="3">
+  <name>ceres_vendor</name>
+  <version>2.1.0</version>
+  <description>ceres 2.1.0</description>
+  <maintainer email="ericzhao0325@163.com">ericx</maintainer>
+  <license>TODO: License declaration</license>
+
+  <depend>eigen3_vendor</depend>
+  <!-- <depend>glog_vendor</depend> -->
+  <!-- <depend>suitesparse_vendor</depend> -->
+  
+  <export>
+    <build_type>cmake</build_type>
+  </export>
+</package>