I have just downloaded the latest version (Oxygen, Release 4.7.0) of the Eclipse IDE for C/C++ Developers, and would like to use it to build and run Emacs from source, which I have downloaded from the Emacs Git repository into ~/emacs/ (it's Emacs version 26.0.50).
I've never used Eclipse before nor built/run Emacs from source before.
I run macOS, the latest version (Sierra, v. 10.12.6).
./configure
,make
andmake install
. The worst thing that can happen is that you'll need to get some header files to compile it.