[cfe-dev] is configure+make dead yet?
pidgeot18 at gmail.com
Fri Jun 22 08:36:58 PDT 2012
On 6/21/2012 1:21 PM, Douglas Gregor wrote:
> On Jun 20, 2012, at 5:13 PM, Nick Lewycky <nlewycky at google.com
> <mailto:nlewycky at google.com>> wrote:
>> Is there anybody who is certain that our autoconf dependency needs to
>> stay around? Are there developers stuck on systems that don't have a
>> recent enough cmake in their most recent release, or maybe are using
>> some features from configure+make that the cmake build system doesn't
>> If nobody pipes up, I might actually try actually removing it!
> I think this is premature, although I consider it a worthy goal. Right
> now, the only motivation we have for removing "configure+make" is that
> we don't like having two build systems, but that's not good enough.
> Some things that CMake needs to do well for it to become the only way
> to build LLVM/Clang:
> - Optionally build and install compiler-rt
> - Optionally build and install libc++
> - Ease-to-use cross-compilation support
> - Documentation to make it easy to understand how to do the above
> - LLDB?
> - LLVM testsuite support
> And some value-add that might make CMake motivating for others:
> - Easy bootstrap
> - Build packages/installers
I decided to try recently to do one of my builds with cmake instead of
configure. The problem I hit is before I even try compiling in the first
place: cmake /src/llvm --help produces an extremely useless list of
options, so it's impossible to figure out how to configure it with cmake
without looking up online. Compare this to /src/llvm/configure --help,
where I can see what the default build will look like and also how I can
tweak it for what I want. Even the online documentation is kind of
crappy in this regard: e.g., LLVM_TARGETS_TO_BUILD doesn't tell you
*which* targets you can build in the first place. I'm sure most people
who do a lot of cmake know these settings by the back of their hand, but
if you're like me and totally clueless when it comes to cmake, it's
News submodule owner
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the cfe-dev