I have build llvm debug version with configue --enable-debug-runtime. I want to learn the exetution process of llvm by the gdb stack trace ? But occured error when I using gdb:
llvm-3.4.2/build/Release+Asserts/bin$ gdb ./clang
(gdb) b clang::CreateLLVMCodeGen (...)
(gdb) r ./clang ~/tmp/helloworld.c -o helloworld
Can any one help me? Thanks.
An issue you're going to have in trying to debug clang is that the first invocation of clang spawns another clang process. What you should do is use clang -v to get the -cc1 command line and use that as your run arguments in gdb.
As far as the Release+Asserts bit, you'll want to do this configure line:
configure --enable-debug-symbols --disable-optimized
since you appear to be using release sources of llvm. The defaults change versus the bits in svn.
Asserts are useful anyhow, so I'd keep them in.