electriclilies commented on a change in pull request #8373:
URL: https://github.com/apache/tvm/pull/8373#discussion_r665745756
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File path: CMakeLists.txt
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@@ -635,3 +635,32 @@ if(APPLE AND TVM_IS_DEBUG_BUILD)
VERBATIM
)
endif()
+
+#Caches the build.
+#Note that ccache-3.x doesn't support nvcc well, so CUDA kernels may never hit
the cache and still
+#need to be re-compiled every time. Using ccache 4.0+ can resolve this issue.
+
+if(USE_CCACHE) # True for AUTO, ON, /path/to/ccache
+ if("${USE_CCACHE}" STREQUAL "AUTO") # Auto mode
+ find_program(CCACHE_FOUND ccache)
+ if(CCACHE_FOUND)
+ message(STATUS "Found the path to ccache, enabling ccache")
+ set(PATH_TO_CCACHE ccache)
+ else()
+ message(STATUS "Didn't find the path to CCACHE, disabling ccache")
+ endif(CCACHE_FOUND)
+ elseif("${USE_CCACHE}" STREQUAL "ON")
+ find_program(CCACHE_FOUND ccache)
+ if(CCACHE_FOUND)
+ message(STATUS "Found the path to ccache, enabling ccache")
+ set(PATH_TO_CCACHE ccache)
+ else()
+ message(FATAL_ERROR "Cannot find ccache. Set USE_CCACHE mode to AUTO or
OFF to build without ccache. USE_CCACHE=" "${USE_CCACHE")
+ endif(CCACHE_FOUND)
+ else() # /path/to/ccache
+ set(PATH_TO_CCACHE USE_CCACHE)
+ message(STATUS "Setting ccache path to " "${PATH_TO_CCACHE}")
+ endif()
+ # Set the flag for ccache
+ set(CXX_COMPILER_LAUNCHER PATH_TO_CCACHE)
Review comment:
How do I do that? Also if it is already set, do I just not set it?
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