51 lines
2.2 KiB
Plaintext
51 lines
2.2 KiB
Plaintext
This document describes how to build a debug version of LLVM for use with
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LLDB, and how to make LLDB use it.
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It assumes that you are using the Xcode 3 series (I used 3.2.4) to build
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LLDB. It also assumes that your shell is /bin/bash, and that you are
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currently at a shell prompt in a checked-out LLDB repository.
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1. Check out LLVM and Clang from their repositories. To determine
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the revision to use, consult scripts/build-llvm.pl (this is done
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in the first command line below). !!! WARNING Do not use the
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name "llvm" for your checkout, for reasons described in part 3
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below.
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$ export CLANG_REVISION=`cat scripts/build-llvm.pl | grep ^our.*llvm_revision | cut -d \' -f 2,2`
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$ svn co -r $CLANG_REVISION http://llvm.org/svn/llvm-project/llvm/trunk llvm.checkout
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$ svn co -r $CLANG_REVISION http://llvm.org/svn/llvm-project/cfe/trunk llvm.checkout/tools/clang
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2. Configure LLVM/Clang with the proper options and compilers. I use:
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$ cd llvm.checkout
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$ CC="cc -g -O0" CXX="c++ -g -O0" ./configure --disable-optimized --enable-assertions --enable-targets=x86_64,arm
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$ CC="cc -g -O0" CXX="c++ -g -O0" make -j 2
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$ cd ..
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3. Create a link to the built LLVM. !!! WARNING: Do not rename the
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directory! The LLVM builder script that runs as part of the Xcode
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build keys off the fact that llvm/ is a symlink to recognize that
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we are building with a custom debug build.
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$ ln -sf llvm.checkout llvm
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4. Make sure that your Xcode project is set up correctly. Open
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lldb.xcodeproj and do the following:
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Under "Targets" in the Groups & Files navigator, double-click
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lldb-tool. In the resulting window, select "Debug" from the
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"Configuration:" drop-down. Then, make sure that the setting
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"Build Active Architecture Only" is enabled. Close the window.
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Under "Targets" in the Groups & Files navigator, double-click
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LLDB. In the resulting window, select "Debug" from the
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"Configuration:" drop-down. Then, make sure that the setting
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"Build Active Architecture Only" is enabled. Close the window.
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5. Ensure that Xcode is building the lldb-tool target in Debug
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configuration for your architecture (typically x86_64). You
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can usually pick these options from the Overview drop-down at
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the top left of the Xcode window.
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6. Build lldb.xcodeproj.
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