When using the Gradle experimental plugin with Android studio to build an NDK library, how do you see the low-level build log i.e. the compiler invocations for each file with all the arguments etc...?
Using the experimental plugin the build log is in the gradle log file. On my Mac, that is in ~/Library/Logs/Android1.3/idea.log
You can run gradle with --debug or --info options for more verbose output. Running from the command line also produces more verbose output than in the IDE.
There is a lot of additional information in build/tmp/{buildstep} that is the output of the tools. Each build step will have a "options.txt" and "output.txt" file in it that shows the command options sent to the tool and the output of the tool respectively.