On Tuesday, 1 April 2014 at 12:46:54 UTC, w0rp wrote:
This is all very interesting. I have two questions.
1. Do you plan to get this merged back into CMake proper?
Ideally, yes. But things are still in early stages, and that is
up to people who aren't me. Perhaps Ben can shed light on if
Kitware wants something like this upstream. However, I
effectively need CMake for a personal project, so I'll continue
maintaining this even if Kitware refuses an upstream merge. Once
things stabilize a bit more, I'll keep up-to-date binaries
published, too.
2. Could I use it to handle my weird build process?
At the moment I am working on something which requires
a strange build process, and I have been struggling to
implement it with existing build tools. First it needs to
compile and run a D program, which generates .d and .cpp files.
Then,
it needs to take all of those D and C++ sources and build one
library
out of them. This all works, I just need to get a build tool
that
does it all in one 'make' command or similar.
Yep, that sort of thing works:
CMakeLists.txt:
cmake_minimum_required(VERSION 3.0)
project(example D)
add_executable(codegen codegen.d)
add_custom_command(
OUTPUT generated.d
COMMAND codegen
)
add_library(generated generated.d)
codegen.d:
import std.file;
void main()
{
"generated.d".write(q{
int myfunc()
{
return 42;
}
});
}
Then, to use CMake to generate Makefiles (or various other build
systems) and build:
mkdir ../path/to/builddir
cd ../path/to/builddir
cmake ../path/to/sourcedir
make -j4
Luckily for you, an old pet project of mine does something
similar to what you describe. I intend on reviving it in the near
future, and moving from a hacky shell script build system to a
CMake one. So, if something breaks, I'll be sure to fix it.
Be warned, however, that this project is still subject to
significant changes. For instance, I'm in the process of
replacing include_text_directories with
include_directories(TEXT), and thus improving the way -J flags
are managed. I'm sure other things will come up and need changed
as we encounter bugs.
- Trent
