Package: aspectc++,llvm-toolchain-3.4 X-Debbugs-CC: aspectc-develop...@aspectc.org, olaf.spinc...@tu-dortmund.de
Hi, Backround: AspectC++ is a language extension to C++ that brings AspectJ-like AOP features to C++. For more information, please see the upstream homepage at http://aspectc.org Upstream has asked me to explore the options for updating the aspectc++ package to the AspectClang branch, which was merged this weekend to svn HEAD: https://svn.aspectc.org/repos/AspectC++/trunk So far, AspectC++ has used the Puma C++ Parsing and Manipulation library. In the last years, work has been done to port AspectC++ to using LLVM. Its readme file gives the following instructions to building AspectC++ against LLVM: Installation ============ 1. Download LLVM 3.4 and clang 3.4 from llvm.org. 2. Unpack in the AspectC++ root. 2.1. Rename the extracted directory to llvm. 2.2. Unpack and rename clang into llvm/tools/clang. 3. Apply *aspectclang-3.4.diff* in the new clang directory. cd llvm/tools/clang && patch -p0 < ../../../AspectC++/aspectclang-3.4.diff 4. Run in the LLVM directory: ./configure --enable-optimized --enable-assertions --disable-terminfo --disable-clang-arcmt --disable-clang-static-analyzer --enable-targets=x86 4.1. If you have a cross-compilation or 32 bit userland with a 64 bit kernel add --target=your-target to the configure line. The target argument can be determined with: gcc -v 2>&1 | grep Target It might also be necessary to specify the name of the installed compiler as in ... ./configure --enable-optimized --enable-assertions --disable-terminfo --disable-clang-arcmt --disable-clang-static-analyzer --enable-targets=x86 --target=i486-linux-gnu CC=gcc CXX=g++ 5. Run: make REQUIRES_RTTI=1 You may add -j<Number> on a multicore machine to reduce compilation time. 6. Compile AspectC++ as usual. For Debian, we would need to use the Debian LLVM sources instead of the ones from LLVM upstream. The challenge here is the patch aspectclang-3.4.diff that needs to be applied to the LLVM sources: >> diffstat aspectclang-3.4.diff include/clang/Parse/Parser.h | 8 ++++ include/clang/Rewrite/Frontend/Rewriters.h | 11 +++++ include/clang/Sema/Sema.h | 37 ++++++++++++++++++ lib/Lex/Lexer.cpp | 3 + lib/Lex/PPLexerChange.cpp | 2 - lib/Parse/ParseDeclCXX.cpp | 57 +++++++++++++++++++++++++++-- lib/Parse/Parser.cpp | 9 ++++ lib/Rewrite/Frontend/InclusionRewriter.cpp | 26 +++++++++---- lib/Sema/Sema.cpp | 3 + 9 files changed, 142 insertions(+), 14 deletions(-) After several discussions with AspectC++ upstream, it seems rather unlikely that this patch gets applied upstream any time soon. Therefore, I'm exploring other options: 1. Make llvm-toolchain-3.4 provide a "llvm-clang-3.4-source" binary package that provides the unpatched source code, so that the AspectC++ source package can build-depend on that, copy the sources into the build directory and follow the rest of the instructions outline in README.LLVM 2. Integrate AspectC++ into the llvm-toolchain package 3. Provide a build/installation script in /usr/share/doc/aspectc++/build_with_clang.sh that uses 'apt-get source llvm-toolchain-3.4' and 'apt-get source aspectc++ to obtain the clang and aspectc++ sources, and implements the instructions in the README.LLVM. This would provide a user-local copy of ac++ with clang, and increases maintenance work I'm happy to hearing further suggestions. What do the debian llvm maintainers think about these options? Would you be willing to implement option 1, that is, to provide the llvm sources in a binary package so that aspectc++ can build-depend on it? -- regards, Reinhard
