Hi, > Is it a bug or an unsupported feature ?
It's a bug in something, but it's hard to say where with the given information. It could be in ccache, the compiler or mapnik's configure logic. I can't reproduce the problem by simply running mapnik's configure with ccache. Here's what I did: 1. Downloaded mapnik v3.0.0-rc1 sources. 2. Ran "PATH=/usr/lib/ccache:$PATH ./configure". 3. Got this output: "Checking if compiler (g++) supports -std=c++11 flag... (cached) yes" Can you reproduce the problem with the above steps? If not, then sbuild might have something to do with it, although I find it unlikely. I don't quite understand why scons says "(cached)", by the way. I'm used these versions of ccache and g++: ccache version 3.1.10 g++ (Debian 4.9.1-18) 4.9.1 -- Joel
