Use CMake_jll so that users don't need to install it manually

[vchuravy]

No description provided.

[wsmoses]

@vchuravy relatedly do you know why julia clang on macos wasn't able to fnd the paths

[github-actions]

Benchmark Results

	main	7faa37f...	main/7faa37f9bd46d9...
basics/overhead	4.34 ± 0.01 ns	4.03 ± 0.01 ns	1.08
time_to_load	0.449 ± 0.0026 s	0.448 ± 0.0037 s	1

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Go to "Actions"->"Benchmark a pull request"->[the most recent run]->"Artifacts" (at the bottom).

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diff --git a/deps/build_local.jl b/deps/build_local.jl
index 452842d..4f5cb95 100644
--- a/deps/build_local.jl
+++ b/deps/build_local.jl
@@ -92,9 +92,9 @@ isdir(scratch_dir) && rm(scratch_dir; recursive=true)
 run(`$(cmake()) -DLLVM_DIR=$(LLVM_DIR) -DCMAKE_BUILD_TYPE=$(BUILD_TYPE) -DENZYME_EXTERNAL_SHARED_LIB=ON -B$(scratch_dir) -S$(source_dir)`)
 
 if BCLoad
-  run(`$(cmake()) --build $(scratch_dir) --parallel $(Sys.CPU_THREADS) -t Enzyme-$(LLVM_VER_MAJOR) EnzymeBCLoad-$(LLVM_VER_MAJOR)`)
+    run(`$(cmake()) --build $(scratch_dir) --parallel $(Sys.CPU_THREADS) -t Enzyme-$(LLVM_VER_MAJOR) EnzymeBCLoad-$(LLVM_VER_MAJOR)`)
 else
-  run(`$(cmake()) --build $(scratch_dir) --parallel $(Sys.CPU_THREADS) -t Enzyme-$(LLVM_VER_MAJOR)`)
+    run(`$(cmake()) --build $(scratch_dir) --parallel $(Sys.CPU_THREADS) -t Enzyme-$(LLVM_VER_MAJOR)`)
 end
 
 # Discover built libraries

[giordano]

relatedly do you know why julia clang on macos wasn't able to fnd the paths

Clang_jll knows nothing about system paths, you need to instruct it a little bit. And macOS in particular has well hidden system paths. You could try something xcrun --sdk macosx --show-sdk-path (from JuliaLang/julia#47184 (comment))

[wsmoses]

fair, also relatedly @giordano we could also do something like this for reactant with bazel_jll on systems it's supported which might be nice for people given bazel nonsense to install