[Fix] Export mmdeploy only in monolithic build (open-mmlab#1798)

* export only `mmdeploy` in monolithic build

* export dynamic backends

CMakeLists.txt

@@ -99,10 +99,12 @@ include(cmake/MMDeploy.cmake)
 add_subdirectory(csrc/mmdeploy)
 
 if (MMDEPLOY_BUILD_SDK)
-    install(TARGETS MMDeployStaticModules
-            MMDeployDynamicModules
-            MMDeployLibs
-            EXPORT MMDeployTargets)
+    if (NOT MMDEPLOY_BUILD_SDK_MONOLITHIC)
+        install(TARGETS MMDeployStaticModules
+                MMDeployDynamicModules
+                MMDeployLibs
+                EXPORT MMDeployTargets)
+    endif ()
 
     if (MMDEPLOY_BUILD_TEST)
         add_subdirectory(tests/test_csrc)

cmake/MMDeploy.cmake

@@ -1,6 +1,6 @@
 # Copyright (c) OpenMMLab. All rights reserved.
 
-function (mmdeploy_export NAME)
+function (mmdeploy_export_impl NAME)
     set(_LIB_DIR lib)
     if (MSVC)
         set(_LIB_DIR bin)
@@ -15,13 +15,22 @@ endfunction ()
 macro(mmdeploy_add_net NAME)
     if (MMDEPLOY_DYNAMIC_BACKEND)
         mmdeploy_add_library(${NAME} SHARED ${ARGN})
+        # DYNAMIC_BACKEND implies BUILD_SDK_MONOLITHIC
+        mmdeploy_export_impl(${NAME})
         target_link_libraries(${PROJECT_NAME} PRIVATE mmdeploy)
         set(BACKEND_LIB_NAMES ${BACKEND_LIB_NAMES} ${PROJECT_NAME} PARENT_SCOPE)
     else ()
         mmdeploy_add_module(${NAME} ${ARGN})
     endif ()
 endmacro()
 
+function (mmdeploy_export NAME)
+    if (NOT MMDEPLOY_BUILD_SDK_MONOLITHIC)
+        mmdeploy_export_impl(${NAME})
+    endif ()
+endfunction ()
+
+
 function (mmdeploy_add_library NAME)
     # EXCLUDE: exclude from registering & exporting
     cmake_parse_arguments(_MMDEPLOY "EXCLUDE" "" "" ${ARGN})

csrc/mmdeploy/apis/c/CMakeLists.txt

@@ -89,5 +89,5 @@ if (MMDEPLOY_BUILD_SDK_CSHARP_API OR MMDEPLOY_BUILD_SDK_MONOLITHIC)
                     INSTALL_RPATH "\$ORIGIN"
                     BUILD_RPATH "\$ORIGIN")
     endif ()
-    mmdeploy_export(mmdeploy)
+    mmdeploy_export_impl(mmdeploy)
 endif ()

csrc/mmdeploy/apis/cxx/CMakeLists.txt

@@ -34,7 +34,7 @@ if (TARGET mmdeploy)
 else ()
     target_link_libraries(${PROJECT_NAME} INTERFACE mmdeploy::core)
 endif ()
-mmdeploy_export(${PROJECT_NAME})
+mmdeploy_export_impl(${PROJECT_NAME})
 install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/mmdeploy/common.hpp
         DESTINATION include/mmdeploy)
 install(DIRECTORY ${CMAKE_SOURCE_DIR}/demo/csrc/ DESTINATION example/cpp

demo/csrc/CMakeLists.txt

@@ -7,8 +7,8 @@ if (NOT (${CMAKE_PROJECT_NAME} STREQUAL "MMDeploy"))
 endif ()
 
 
-function(add_example dep folder name)
-    if (NOT dep OR TARGET mmdeploy_${dep})
+function(add_example task folder name)
+    if ((NOT task) OR (task IN_LIST MMDEPLOY_TASKS))
         # Search for c/cpp sources
         file(GLOB _SRCS ${folder}/${name}.c*)
         add_executable(${name} ${_SRCS})