Building System: Only build one shared library for the user

src/BuildOnLinux.cmake

@@ -3,20 +3,21 @@
 set(TORCH_XPU_OPS_LIBRARIES)
 set(SYCL_LINK_LIBRARIES_KEYWORD PRIVATE)
 
-add_library(
-  torch_xpu_ops
-  STATIC
-  ${ATen_XPU_CPP_SRCS}
-  ${ATen_XPU_NATIVE_CPP_SRCS}
-  ${ATen_XPU_GEN_SRCS}
-  ${ATen_XPU_XCCL_SRCS})
-
-if(USE_C10D_XCCL)
-  target_compile_definitions(torch_xpu_ops PRIVATE USE_C10D_XCCL)
-  target_link_libraries(torch_xpu_ops PUBLIC torch::xccl)
-endif()
 
 if(BUILD_SEPARATE_OPS)
+  add_library(
+    torch_xpu_ops
+    STATIC
+    ${ATen_XPU_CPP_SRCS}
+    ${ATen_XPU_NATIVE_CPP_SRCS}
+    ${ATen_XPU_GEN_SRCS}
+    ${ATen_XPU_XCCL_SRCS})
+
+  if(USE_C10D_XCCL)
+    target_compile_definitions(torch_xpu_ops PRIVATE USE_C10D_XCCL)
+    target_link_libraries(torch_xpu_ops PUBLIC torch::xccl)
+  endif()
+  list(APPEND TORCH_XPU_OPS_LIBRARIES torch_xpu_ops)
   foreach(sycl_src ${ATen_XPU_SYCL_SRCS})
     get_filename_component(name ${sycl_src} NAME_WLE REALPATH)
     set(sycl_lib torch-xpu-ops-sycl-${name})
@@ -31,6 +32,19 @@ if(BUILD_SEPARATE_OPS)
     install(TARGETS ${sycl_lib} DESTINATION "${TORCH_INSTALL_LIB_DIR}")
   endforeach()
 elseif(BUILD_SPLIT_KERNEL_LIB)
+  add_library(
+    torch_xpu_ops
+    STATIC
+    ${ATen_XPU_CPP_SRCS}
+    ${ATen_XPU_NATIVE_CPP_SRCS}
+    ${ATen_XPU_GEN_SRCS}
+    ${ATen_XPU_XCCL_SRCS})
+
+  if(USE_C10D_XCCL)
+    target_compile_definitions(torch_xpu_ops PRIVATE USE_C10D_XCCL)
+    target_link_libraries(torch_xpu_ops PUBLIC torch::xccl)
+  endif()
+  list(APPEND TORCH_XPU_OPS_LIBRARIES torch_xpu_ops)
   # Split SYCL kernels into 4 libraries as categories 1) Unary+Binary 2) Reduce 3) Foreach 4) Others.
   set(ATen_XPU_SYCL_UNARY_BINARY_SRCS)
   set(ATen_XPU_SYCL_REDUCE_SRCS)
@@ -110,18 +124,24 @@ elseif(BUILD_SPLIT_KERNEL_LIB)
   install(TARGETS ${sycl_lib} DESTINATION "${TORCH_INSTALL_LIB_DIR}")
 else()
   sycl_add_library(
-    torch_xpu_ops_sycl_kernels
-    SHARED
+    xpu_sycl
+    STATIC
+    CXX_SOURCES  ${ATen_XPU_CPP_SRCS} ${ATen_XPU_NATIVE_CPP_SRCS} ${ATen_XPU_GEN_SRCS} ${ATen_XPU_XCCL_SRCS}
     SYCL_SOURCES ${ATen_XPU_SYCL_SRCS})
-  target_link_libraries(torch_xpu_ops PUBLIC torch_xpu_ops_sycl_kernels)
-  list(APPEND TORCH_XPU_OPS_LIBRARIES torch_xpu_ops_sycl_kernels)
-
-  install(TARGETS torch_xpu_ops_sycl_kernels DESTINATION "${TORCH_INSTALL_LIB_DIR}")
+  add_library(torch_xpu_ops ALIAS xpu_sycl)
+  set_target_properties(xpu_sycl PROPERTIES OUTPUT_NAME torch_xpu_ops)
+  set(SYCL_TARGET xpu_sycl)
+  if(USE_C10D_XCCL)
+    target_compile_definitions(xpu_sycl PRIVATE USE_C10D_XCCL)
+    target_link_libraries(xpu_sycl  PUBLIC torch::xccl)
+  endif()
+
+  install(TARGETS xpu_sycl DESTINATION "${TORCH_INSTALL_LIB_DIR}")
+  list(APPEND TORCH_XPU_OPS_LIBRARIES xpu_sycl)
+
 endif()
 set(SYCL_LINK_LIBRARIES_KEYWORD)
 
-list(APPEND TORCH_XPU_OPS_LIBRARIES torch_xpu_ops)
-
 foreach(lib ${TORCH_XPU_OPS_LIBRARIES})
   # Align with PyTorch compile options PYTORCH_SRC_DIR/cmake/public/utils.cmake
   torch_compile_options(${lib})