[cmake-developers] [CMake] CMake integration in Gradle (Android Studio)

[Robert Dailey]

Which version of Android Studio? Latest stable is 2.2 IIRC. Are you
talking about dev/beta builds?

On Sun, Oct 30, 2016 at 9:04 AM, Cong Monkey <congzhangzh at gmail.com> wrote:
> The latest release of android studio work with CMAKE well.
>
> you can create a new project with c++ support to test CMAKE support!
>
> You can follow https://code.google.com/p/android/issues/detail?id=212007
> to get the details.
>
> 2016-10-28 5:48 GMT+08:00 Robert Dailey <rcdailey.lists at gmail.com>:
>> I'm at a bit of a loss on finding more information. Can anyone at
>> least confirm that this isn't a reliable place to find the answers I'm
>> looking for? Does anyone have real experience with android + gradle +
>> cmake integration and can provide some pointers?
>>
>> On Tue, Oct 25, 2016 at 8:48 AM, Robert Dailey <rcdailey.lists at gmail.com> wrote:
>>> I'm not sure if the CMake mailing lists are the right place to ask
>>> this question but I thought I'd ask just in case someone has gone down
>>> this path or has experience with what Google/Gradle is actually trying
>>> to accomplish with what seems to be a hand-built version of CMake with
>>> custom patches that are not in upstream repositories.
>>>
>>> Prior to switching to Android Studio / Gradle, I was using Eclipse /
>>> Ant. The way I did CMake integration was not really integration at
>>> all: I generated Ninja build scripts using CMake and implemented
>>> custom targets to run "ant release" after all the C++ projects were
>>> built. I made sure that CMake copied relevant *.so files to
>>> appropriate directories in the Ant structure so they are packaged with
>>> built APKs. That's how I did my Android development.
>>>
>>> Now that I'm integrating CMake into Gradle, first annoyance I noticed
>>> is that I can't use CMake 3.7 (or any external installation of CMake)
>>> with Android Studio. It requires a version of CMake installed through
>>> SDK Manager. This means I can't use the new Android toolchain
>>> functionality built into CMake 3.7 (sad face). But this is something I
>>> can work around...
>>>
>>> Next I found out that stuff I'm setting in my CMake scripts, such as
>>> CPP flags like `-std=c++14` and `-fexceptions` was not being applied.
>>> For whatever reason, Gradle is overriding these from the command line
>>> (I'm guessing?). So this requires me to duplicate the toolchain /
>>> compiler flag setup I already do in my CMake scripts now in the Gradle
>>> build scripts. This seems completely unnecessary and a maintenance
>>> burden.
>>>
>>> What I was expecting Gradle to do was essentially provide me some
>>> toolchain file so that CMake can find the compiler and linker to use
>>> and then the rest would be determined by CMake itself.
>>>
>>> Is there a way I can tell Gradle to not take so much control over
>>> compiler flags? I want my CMake scripts to do this. I can't imagine
>>> they had a good reason to do this. What have others done in this
>>> situation with their own Gradle + CMake integration? Looking for
>>> advice here, since information is sparse, especially since the Android
>>> Studio 2.2 CMake integration is relatively new stuff.
>> --
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