[LLVMdev] [RFC] March Update: Progress report on CMake build system's ability to replace autoconf

[Chris Bieneman]

One more outstanding issue:

Bug 22725 - lldb build with cmake fails with "Program error: Invalid parameters entered, -h for help. "

-Chris

> On Mar 3, 2015, at 3:10 PM, Chris Bieneman <beanz at apple.com> wrote:
> 
> There has been a lot of progress since I first sent out an email recapping the status of replacing autoconf, so I thought I’d send an update.
> 
> Completed:
> * Bug 15493 - No option to build shared libLLVM-version.so in CMake
> * Bug 12157 - llvmconfig.cmake.in make cmake installations not relocatable
> * Bug 18722 - Option to use CMake with libc++ to compile clang
> * Bug 21560 - Add support to cmake for using installed versions of LLVM and Clang
> * Bug 21569 - Can't `make install prefix=/tmp/llvm' with CMake.
> * Bug 21570 - Cannot set default configuration options for CMake
> 
> Still Outstanding:
> 
> * Bug 14109 - CMake build for compiler-rt should use just-built clang
>  - Looks like there are still some small issues here, but it is further along than expected
> 
> * Bug 18496 - [cmake] .S assembly files not compiled by cmake in libclang_rt.ARCH
>  - Unclear if this is still a problem
> 
> * Bug 19462 - Use the INSTALL(EXPORT ...) to export CMake definitions
>  - Patches out for review http://reviews.llvm.org/D7623 - there are comments in the bug that I’ll update the patches to reflect
> 
> * Bug 19875 - libraries and executables need different rpaths
>  - No Update: Still outstanding, I don't think this is a blocker.
> 
> * Bug 21561 - Update release scripts to use CMake
>  - No Update: Still outstanding and blocking removal of autoconf
> 
> * Bug 21562 - Add a CMake equivalent for make/platform/clang_darwin.mk in compiler_rt
>  - No Update: From discussions on llvm-dev and IRC the proper fix for this is a cross-compiling approach for compiler_rt builds, and this is a blocker.
> 
> * Bug 21568 - Cannot add rpath
>  - It looks like this is not a blocker because it can be done, but is unwieldy. I think this may be made a lot easier with help from the CMake developers.
> 
> 
> Other issues not tracked by bugs:
> 
> * FreeBSD seemed to have problems with CMake identifying itself as amd64 causing x86_64 tests to fail
> * Migrating buildbots
> * We need to make sure libc++ works properly on Darwin
> * Update GettingStarted to prefer CMake
>  - Patches out for review http://reviews.llvm.org/D8046
> 
> * Put together a “cheat sheet” document for transitioning
>  - If you have an autoconf workflow you’d like to see in the cheat sheet please send your commands my way and I‘ll assemble the cheat sheet.
> 
> If there is anything I’m missing please let me know. Thanks,
> 
> -Chris
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