Refactor CPU compile preamble (#708)

* refactor cpu preamble

* fix include order

* fix some issues'

* fixes for linux

* try to fix includes

* add back warning suppression

* more linux fixes

mlx/backend/common/CMakeLists.txt

@@ -1,3 +1,33 @@
+
+if (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+  set(CLANG TRUE)
+endif()
+
+add_custom_command(
+    OUTPUT  compiled_preamble.cpp
+    COMMAND /bin/bash
+              ${CMAKE_CURRENT_SOURCE_DIR}/make_compiled_preamble.sh
+              ${CMAKE_CURRENT_BINARY_DIR}/compiled_preamble.cpp
+              ${CMAKE_CXX_COMPILER}
+              ${CMAKE_SOURCE_DIR}
+              ${CLANG}
+
+    DEPENDS make_compiled_preamble.sh
+            compiled_preamble.h
+            ${CMAKE_SOURCE_DIR}/mlx/types/half_types.h
+            ${CMAKE_SOURCE_DIR}/mlx/types/fp16.h
+            ${CMAKE_SOURCE_DIR}/mlx/types/bf16.h
+            ${CMAKE_SOURCE_DIR}/mlx/types/complex.h
+            ops.h
+)
+
+add_custom_target(
+  cpu_compiled_preamble
+  DEPENDS compiled_preamble.cpp
+)
+
+add_dependencies(mlx cpu_compiled_preamble)
+
 target_sources(
   mlx
   PRIVATE
@@ -19,4 +49,5 @@ target_sources(
   ${CMAKE_CURRENT_SOURCE_DIR}/indexing.cpp
   ${CMAKE_CURRENT_SOURCE_DIR}/load.cpp
   ${CMAKE_CURRENT_SOURCE_DIR}/qrf.cpp
+  ${CMAKE_CURRENT_BINARY_DIR}/compiled_preamble.cpp
 )