cmake构建时自动生成mk_export头文件,解决msvc链接设备问题 (#1660)

* 解决msvc下链接问题
* CMAKE添加自动生成mk api export头文件
* 兼容非cmake构建时情况

Co-authored-by: baiyfcu <baiyfcu@gmail.com>

CMakeLists.txt

@@ -178,7 +178,7 @@ endif ()
 
 configure_file(
         ${CMAKE_CURRENT_SOURCE_DIR}/version.h.ini
-        ${CMAKE_BINARY_DIR}/Version.h
+        ${CMAKE_BINARY_DIR}/version.h
         @ONLY
 )
 

api/CMakeLists.txt

@@ -1,5 +1,5 @@
 include_directories(include source)
-
+include(GenerateExportHeader)
 file(GLOB api_src_list include/*.h source/*.cpp source/*.h source/*.c)
 
 if (IOS)
@@ -8,23 +8,29 @@ if (IOS)
 else ()
     if (ENABLE_API_STATIC_LIB)
         add_library(mk_api STATIC ${api_src_list})
-        if (WIN32)
-            add_definitions(-DMediaKitApi_STATIC)
-        endif ()
     else ()
         add_library(mk_api SHARED ${api_src_list})
-        if (WIN32)
-            add_definitions(-DMediaKitApi_EXPORTS)
-        endif ()
     endif ()
+
     if (CMAKE_SYSTEM_NAME MATCHES "Linux")
         target_link_libraries(mk_api -Wl,--start-group jsoncpp ${LINK_LIB_LIST} -Wl,--end-group)
     else ()
         target_link_libraries(mk_api jsoncpp ${LINK_LIB_LIST})
     endif ()
     add_subdirectory(tests)
+endif ()
 
-    file(GLOB api_header_list include/*.h)
+add_definitions(-DGENERATE_EXPORT)
+include_directories(${CMAKE_BINARY_DIR})
+generate_export_header(mk_api
+        EXPORT_MACRO_NAME API_EXPORT
+        BASE_NAME MK_API
+        STATIC_DEFINE MediaKitApi_STATIC
+        EXPORT_FILE_NAME "${CMAKE_BINARY_DIR}/mk_export.h"
+        )
+
+if (NOT IOS)
+    file(GLOB api_header_list include/*.h ${CMAKE_BINARY_DIR}/*.h)
     install(FILES ${api_header_list} DESTINATION ${INSTALL_PATH_INCLUDE})
     install(TARGETS mk_api ARCHIVE DESTINATION ${INSTALL_PATH_LIB} LIBRARY DESTINATION ${INSTALL_PATH_LIB})
 endif ()

api/include/mk_common.h

@@ -14,21 +14,26 @@
 #include <stdint.h>
 #include <stddef.h>
 
+#if defined(GENERATE_EXPORT)
+#include "mk_export.h"
+#endif
+
 #if defined(_WIN32) && defined(_MSC_VER)
-#   ifndef MediaKitApi_STATIC
+#    define API_CALL __cdecl
+#else
+#    define API_CALL
+#endif
+
+#if defined(_WIN32) && defined(_MSC_VER)
+#    if !defined(GENERATE_EXPORT)
 #        if defined(MediaKitApi_EXPORTS)
 #            define API_EXPORT __declspec(dllexport)
 #        else
 #            define API_EXPORT __declspec(dllimport)
 #        endif
-#       define API_CALL __cdecl
-#   else
-#       define API_EXPORT
-#       define API_CALL
 #    endif
-#else
+#elif !defined(GENERATE_EXPORT)
 #   define API_EXPORT
-#   define API_CALL
 #endif
 
 #ifdef __cplusplus

api/source/mk_frame.cpp

@@ -17,7 +17,7 @@
 using namespace mediakit;
 
 extern "C" {
-#define XX(name, type, value, str, mpeg_id) const int MK##name = value;
+#define XX(name, type, value, str, mpeg_id) API_EXPORT const int MK##name = value;
     CODEC_MAP(XX)
 #undef XX
 }

api/tests/CMakeLists.txt

@@ -1,4 +1,6 @@
 aux_source_directory(. TEST_SRC_LIST)
+include_directories(${PROJECT_BINARY_DIR}/api)
+
 foreach(TEST_SRC ${TEST_SRC_LIST})
     STRING(REGEX REPLACE "^\\./|\\.c[a-zA-Z0-9_]*$" "" TEST_EXE_NAME ${TEST_SRC})
 

server/main.cpp

@@ -33,7 +33,7 @@
 #endif
 
 #if defined(ENABLE_VERSION)
-#include "Version.h"
+#include "version.h"
 #endif
 
 #if !defined(_WIN32)

src/Common/macros.cpp

@@ -14,7 +14,7 @@
 using namespace toolkit;
 
 #if defined(ENABLE_VERSION)
-#include "Version.h"
+#include "version.h"
 #endif
 
 extern "C" {