[BUILD] Export compile commands (#1854)

This can be used by IDEs to figure out how to correctly compile
individual sources and offer semantic code completion.

python/setup.py

@@ -211,6 +211,7 @@ class CMakeBuild(build_ext):
         # python directories
         python_include_dir = sysconfig.get_path("platinclude")
         cmake_args = [
+            "-DCMAKE_EXPORT_COMPILE_COMMANDS=ON",
             "-DLLVM_ENABLE_WERROR=ON",
             "-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=" + extdir,
             "-DTRITON_BUILD_TUTORIALS=OFF",