Refactor CPU/GPU extension targets for CMake build (#28026)

Signed-off-by: Abolfazl Shahbazi <12436063+ashahba@users.noreply.github.com>

CMakeLists.txt

@@ -241,7 +241,7 @@ if(VLLM_GPU_LANG STREQUAL "CUDA")
   message(STATUS "Enabling cumem allocator extension.")
   # link against cuda driver library
   list(APPEND CUMEM_LIBS CUDA::cuda_driver)
-  define_gpu_extension_target(
+  define_extension_target(
     cumem_allocator
     DESTINATION vllm
     LANGUAGE CXX
@@ -858,7 +858,7 @@ if (VLLM_GPU_LANG STREQUAL "HIP")
 endif()
 
 message(STATUS "Enabling C extension.")
-define_gpu_extension_target(
+define_extension_target(
   _C
   DESTINATION vllm
   LANGUAGE ${VLLM_GPU_LANG}
@@ -973,7 +973,7 @@ if(VLLM_GPU_LANG STREQUAL "CUDA")
 endif()
 
 message(STATUS "Enabling moe extension.")
-define_gpu_extension_target(
+define_extension_target(
   _moe_C
   DESTINATION vllm
   LANGUAGE ${VLLM_GPU_LANG}
@@ -994,7 +994,7 @@ if(VLLM_GPU_LANG STREQUAL "HIP")
     "csrc/rocm/skinny_gemms.cu"
     "csrc/rocm/attention.cu")
 
-  define_gpu_extension_target(
+  define_extension_target(
     _rocm_C
     DESTINATION vllm
     LANGUAGE ${VLLM_GPU_LANG}

cmake/cpu_extension.cmake

@@ -343,7 +343,7 @@ message(STATUS "CPU extension source files: ${VLLM_EXT_SRC}")
 # Define extension targets
 #
 
-define_gpu_extension_target(
+define_extension_target(
     _C
     DESTINATION vllm
     LANGUAGE CXX
@@ -354,4 +354,4 @@ define_gpu_extension_target(
     WITH_SOABI
 )
 
-message(STATUS "Enabling C extension.")
+message(STATUS "Enabling C extension.")
\ No newline at end of file

cmake/external_projects/flashmla.cmake

@@ -92,7 +92,7 @@ if(FLASH_MLA_ARCHS)
         SRCS "${FlashMLA_Extension_SOURCES}"
         CUDA_ARCHS "${FLASH_MLA_ARCHS}")
 
-    define_gpu_extension_target(
+    define_extension_target(
         _flashmla_C
         DESTINATION vllm
         LANGUAGE ${VLLM_GPU_LANG}
@@ -109,7 +109,7 @@ if(FLASH_MLA_ARCHS)
         $<$<COMPILE_LANGUAGE:CUDA>:-UPy_LIMITED_API>
         $<$<COMPILE_LANGUAGE:CXX>:-UPy_LIMITED_API>)
 
-    define_gpu_extension_target(
+    define_extension_target(
         _flashmla_extension_C
         DESTINATION vllm
         LANGUAGE ${VLLM_GPU_LANG}

cmake/utils.cmake

@@ -453,21 +453,20 @@ macro(override_gpu_arches GPU_ARCHES GPU_LANG GPU_SUPPORTED_ARCHES)
 endmacro()
 
 #
-# Define a target named `GPU_MOD_NAME` for a single extension. The
+# Define a target named `MOD_NAME` for a single extension. The
 # arguments are:
 #
 # DESTINATION <dest>         - Module destination directory.
-# LANGUAGE <lang>            - The GPU language for this module, e.g CUDA, HIP,
-#                              etc.
+# LANGUAGE <lang>            - The language for this module, e.g. CUDA, HIP,
+#                              CXX, etc.
 # SOURCES <sources>          - List of source files relative to CMakeLists.txt
 #                              directory.
 #
 # Optional arguments:
 #
-# ARCHITECTURES <arches>     - A list of target GPU architectures in cmake
-#                              format.
-#                              Refer `CMAKE_CUDA_ARCHITECTURES` documentation
-#                              and `CMAKE_HIP_ARCHITECTURES` for more info.
+# ARCHITECTURES <arches>     - A list of target architectures in cmake format.
+#                              For GPU, refer to CMAKE_CUDA_ARCHITECTURES and
+#                              CMAKE_HIP_ARCHITECTURES for more info.
 #                              ARCHITECTURES will use cmake's defaults if
 #                              not provided.
 # COMPILE_FLAGS <flags>      - Extra compiler flags passed to NVCC/hip.
@@ -478,63 +477,61 @@ endmacro()
 #
 # Note: optimization level/debug info is set via cmake build type.
 #
-function (define_gpu_extension_target GPU_MOD_NAME)
+function (define_extension_target MOD_NAME)
   cmake_parse_arguments(PARSE_ARGV 1
-    GPU
+    ARG
     "WITH_SOABI"
     "DESTINATION;LANGUAGE;USE_SABI"
     "SOURCES;ARCHITECTURES;COMPILE_FLAGS;INCLUDE_DIRECTORIES;LIBRARIES")
 
   # Add hipify preprocessing step when building with HIP/ROCm.
-  if (GPU_LANGUAGE STREQUAL "HIP")
-    hipify_sources_target(GPU_SOURCES ${GPU_MOD_NAME} "${GPU_SOURCES}")
+  if (ARG_LANGUAGE STREQUAL "HIP")
+    hipify_sources_target(ARG_SOURCES ${MOD_NAME} "${ARG_SOURCES}")
   endif()
 
-  if (GPU_WITH_SOABI)
-    set(GPU_WITH_SOABI WITH_SOABI)
+  if (ARG_WITH_SOABI)
+    set(SOABI_KEYWORD WITH_SOABI)
   else()
-    set(GPU_WITH_SOABI)
+    set(SOABI_KEYWORD "")
   endif()
 
-  if (GPU_USE_SABI)
-    Python_add_library(${GPU_MOD_NAME} MODULE USE_SABI ${GPU_USE_SABI} ${GPU_WITH_SOABI} "${GPU_SOURCES}")
+  if (ARG_USE_SABI)
+    Python_add_library(${MOD_NAME} MODULE USE_SABI ${ARG_USE_SABI} ${SOABI_KEYWORD} "${ARG_SOURCES}")
   else()
-    Python_add_library(${GPU_MOD_NAME} MODULE ${GPU_WITH_SOABI} "${GPU_SOURCES}")
+    Python_add_library(${MOD_NAME} MODULE ${SOABI_KEYWORD} "${ARG_SOURCES}")
   endif()
 
-  if (GPU_LANGUAGE STREQUAL "HIP")
+  if (ARG_LANGUAGE STREQUAL "HIP")
     # Make this target dependent on the hipify preprocessor step.
-    add_dependencies(${GPU_MOD_NAME} hipify${GPU_MOD_NAME})
+    add_dependencies(${MOD_NAME} hipify${MOD_NAME})
     # Make sure we include the hipified versions of the headers, and avoid conflicts with the ones in the original source folder
-    target_include_directories(${GPU_MOD_NAME} PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/csrc
-      ${GPU_INCLUDE_DIRECTORIES})
+    target_include_directories(${MOD_NAME} PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/csrc
+      ${ARG_INCLUDE_DIRECTORIES})
   else()
-    target_include_directories(${GPU_MOD_NAME} PRIVATE csrc
-      ${GPU_INCLUDE_DIRECTORIES})
+    target_include_directories(${MOD_NAME} PRIVATE csrc
+      ${ARG_INCLUDE_DIRECTORIES})
   endif()
 
-  if (GPU_ARCHITECTURES)
-    set_target_properties(${GPU_MOD_NAME} PROPERTIES
-      ${GPU_LANGUAGE}_ARCHITECTURES "${GPU_ARCHITECTURES}")
+  if (ARG_ARCHITECTURES)
+    set_target_properties(${MOD_NAME} PROPERTIES
+      ${ARG_LANGUAGE}_ARCHITECTURES "${ARG_ARCHITECTURES}")
   endif()
 
+  target_compile_options(${MOD_NAME} PRIVATE
+    $<$<COMPILE_LANGUAGE:${ARG_LANGUAGE}>:${ARG_COMPILE_FLAGS}>)
 
-  target_compile_options(${GPU_MOD_NAME} PRIVATE
-    $<$<COMPILE_LANGUAGE:${GPU_LANGUAGE}>:${GPU_COMPILE_FLAGS}>)
+  target_compile_definitions(${MOD_NAME} PRIVATE
+    "-DTORCH_EXTENSION_NAME=${MOD_NAME}")
 
-  target_compile_definitions(${GPU_MOD_NAME} PRIVATE
-    "-DTORCH_EXTENSION_NAME=${GPU_MOD_NAME}")
-
-
-  target_link_libraries(${GPU_MOD_NAME} PRIVATE torch ${GPU_LIBRARIES})
+  target_link_libraries(${MOD_NAME} PRIVATE torch ${ARG_LIBRARIES})
 
   # Don't use `TORCH_LIBRARIES` for CUDA since it pulls in a bunch of
   # dependencies that are not necessary and may not be installed.
-  if (GPU_LANGUAGE STREQUAL "CUDA")
-    target_link_libraries(${GPU_MOD_NAME} PRIVATE CUDA::cudart CUDA::cuda_driver)
+  if (ARG_LANGUAGE STREQUAL "CUDA")
+    target_link_libraries(${MOD_NAME} PRIVATE torch CUDA::cudart CUDA::cuda_driver ${ARG_LIBRARIES})
   else()
-    target_link_libraries(${GPU_MOD_NAME} PRIVATE ${TORCH_LIBRARIES})
+    target_link_libraries(${MOD_NAME} PRIVATE torch ${TORCH_LIBRARIES} ${ARG_LIBRARIES})
   endif()
 
-  install(TARGETS ${GPU_MOD_NAME} LIBRARY DESTINATION ${GPU_DESTINATION} COMPONENT ${GPU_MOD_NAME})
+  install(TARGETS ${MOD_NAME} LIBRARY DESTINATION ${ARG_DESTINATION} COMPONENT ${MOD_NAME})
 endfunction()