feat: 添加CM3/4/7的硬件与软件浮点单元构建矩阵，变更api接口为dr_*

CMakeLists.txt

@@ -3,81 +3,69 @@ project(DataRouter C)
 
 set(CMAKE_C_STANDARD 11)
 
-# ======== 静态库 ========
-add_library(DataRouter STATIC datarouter.c)
-target_include_directories(DataRouter PUBLIC
-    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
-    $<INSTALL_INTERFACE:include>
-)
+# ── 选项 ──────────────────────────────────────────────────────
 
-# ======== 共享库（可选，通过 BUILD_SHARED 控制） ========
-option(BUILD_SHARED "Build shared library" ON)
-if(BUILD_SHARED)
-    add_library(DataRouter_shared SHARED datarouter.c)
-    target_include_directories(DataRouter_shared PUBLIC
-        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
-        $<INSTALL_INTERFACE:include>
-    )
-    set_target_properties(DataRouter_shared PROPERTIES OUTPUT_NAME DataRouter)
+option(DR_SOURCE_ONLY    "Provide source/include vars instead of building lib" OFF)
+option(DR_COMPILE_CHECK  "Build compile-compatibility tests for each Cortex-M variant" OFF)
+
+# 源码路径变量：嵌入式项目直接 target_sources() 使用
+set(DR_SOURCES  ${CMAKE_CURRENT_SOURCE_DIR}/datarouter.c  CACHE INTERNAL "")
+set(DR_INCLUDES ${CMAKE_CURRENT_SOURCE_DIR}               CACHE INTERNAL "")
+
+# ── 编译兼容性矩阵 (仅在 host 编译器和 ARM GCC 均可用时生效) ──
+
+if(DR_COMPILE_CHECK)
+    find_program(ARM_GCC arm-none-eabi-gcc)
+    if(ARM_GCC)
+        message(STATUS "ARM GCC found: ${ARM_GCC}")
+        set(ARM_MATRIX
+            "cm3;      -mcpu=cortex-m3     -mthumb -mfloat-abi=soft"
+            "cm4-soft; -mcpu=cortex-m4     -mthumb -mfloat-abi=soft"
+            "cm4-hard; -mcpu=cortex-m4     -mthumb -mfpu=fpv4-sp-d16  -mfloat-abi=hard"
+            "cm7-soft; -mcpu=cortex-m7     -mthumb -mfloat-abi=soft"
+            "cm7-hard; -mcpu=cortex-m7     -mthumb -mfpu=fpv5-d16     -mfloat-abi=hard"
+        )
+        foreach(ENTRY ${ARM_MATRIX})
+            string(REPLACE ";" "|" ENTRY "${ENTRY}")
+            string(REPLACE "|" ";" ITEM "${ENTRY}")
+            list(GET ITEM 0 VARIANT)
+            list(REMOVE_AT ITEM 0)
+            string(REPLACE ";" " " FLAGS "${ITEM}")
+            set(TARGET "check_${VARIANT}")
+            add_custom_target(${TARGET}
+                COMMAND ${ARM_GCC} ${FLAGS}
+                        -c ${CMAKE_CURRENT_SOURCE_DIR}/datarouter.c
+                        -I${CMAKE_CURRENT_SOURCE_DIR}
+                        -o ${CMAKE_CURRENT_BINARY_DIR}/${TARGET}.o
+                COMMENT "Compile check: ${VARIANT} (${FLAGS})"
+            )
+            message(STATUS "  compile check: ${VARIANT}  (make ${TARGET})")
+        endforeach()
+    else()
+        message(WARNING "arm-none-eabi-gcc not found; skipping ARM compile checks")
+    endif()
+    return()
 endif()
 
-# ======== 示例程序 ========
+# ── 源码直用模式（嵌入式项目） ──────────────────────────────
+
+if(DR_SOURCE_ONLY)
+    return()
+endif()
+
+# ── 常规库构建 ────────────────────────────────────────────────
+
+add_library(DataRouter STATIC datarouter.c)
+target_include_directories(DataRouter PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
+
 if(BUILD_EXAMPLES OR NOT DEFINED BUILD_EXAMPLES)
     add_executable(example example.c)
     target_link_libraries(example DataRouter)
 endif()
 
-# ======== 测试 ========
 if(BUILD_TESTING OR NOT DEFINED BUILD_TESTING)
     enable_testing()
     add_executable(test_datarouter tests/test_datarouter.c)
     target_link_libraries(test_datarouter DataRouter)
     add_test(NAME datarouter COMMAND test_datarouter)
 endif()
-
-# ======== 安装规则 ========
-
-# 静态库 → lib/
-install(TARGETS DataRouter
-    EXPORT DataRouterTargets
-    ARCHIVE DESTINATION lib
-)
-
-# 共享库 → lib/（可选）
-if(TARGET DataRouter_shared)
-    install(TARGETS DataRouter_shared
-        EXPORT DataRouterTargets
-        ARCHIVE DESTINATION lib   # .lib (Windows import lib)
-        LIBRARY DESTINATION lib   # .so
-        RUNTIME DESTINATION lib   # .dll
-    )
-endif()
-
-# 示例 → bin/
-if(TARGET example)
-    install(TARGETS example RUNTIME DESTINATION bin)
-endif()
-
-# 头文件 → include/
-install(FILES datarouter.h DESTINATION include)
-
-# 文档 → share/
-install(FILES datarouter_config_template.h LICENSE DESTINATION share)
-if(EXISTS ${CMAKE_SOURCE_DIR}/README.md)
-    install(FILES README.md DESTINATION share)
-endif()
-
-# CMake 包配置文件 → cmake/
-set(INCLUDE_INSTALL_DIR include)
-set(LIB_INSTALL_DIR lib)
-
-include(CMakePackageConfigHelpers)
-configure_package_config_file(
-    cmake/DataRouterConfig.cmake.in
-    ${CMAKE_CURRENT_BINARY_DIR}/DataRouterConfig.cmake
-    INSTALL_DESTINATION cmake
-    PATH_VARS INCLUDE_INSTALL_DIR LIB_INSTALL_DIR
-)
-
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/DataRouterConfig.cmake DESTINATION cmake)
-install(EXPORT DataRouterTargets FILE DataRouterTargets.cmake DESTINATION cmake)