By default xcodebuld pulls the tip HEAD of LLVM and Clang inside LLDB for
building, unlike cmake/ninja. What I am looking for is a xcodebuild
command-line parameter that can point to the custom llvm/clang source path.
From build-llvm.pl script, it seems like this facility already exists, and it
is possible to point to custom location using SCRIPT_INPUT_FILE_0 environment
variable.
Eg. Directory structure:
llvm
|
`-- tools
|
+-- clang
|
`-- lldb
Hence, expect the following to achieve:
xcodebuild build -configuration Debug -scheme lldb-tool -workspace
${WORKSPACE}/llvm/tools/lldb/lldb.xcworkspace
SCRIPT_INPUT_FILE_0=${WORKSPACE}/llvm SYMROOT=${WORKSPACE}/build
OBJROOT=${WORKSPACE}/build/bin
But it doesn’t seem to pick up the the custom llvm directory, instead pulls a
fresh one from the repo again. I’ve also tried exporting the env variable
SCRIPT_INPUT_FILE_0 before the xcodebuild is launched, but is of no use.
Is the above expected to work? Where does the SCRIPT_INPUT_FILE_0 come from? Is
there a xcodebuild command-line argument to point to LLVM source? Would
appreciate if you could please correct my understanding.
Thanks,
Meenakshi_______________________________________________
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