Merge pull request #350 from mapbox/c++-readme

Add instructions for upgrading g++ on Linux

README.md

@@ -279,6 +279,17 @@ and perhaps
 
     make install
 
+Tippecanoe now requires features from the 2014 C++ standard. If your compiler is older than
+that, you will need to install a newer one. On MacOS, updating to the lastest XCode should
+get you a new enough version of `clang++`. On Linux, you should be able to upgrade `g++` with
+
+```
+sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
+sudo apt-get update -y
+sudo apt-get install -y g++-5
+export CXX=g++-5
+```
+
 Examples
 ------
 

man/tippecanoe.1

@@ -315,7 +315,7 @@ Linux:
 .PP
 .RS
 .nf
-sudo apt\-get install libsqlite3\-dev zlib1g\-dev
+sudo apt\-get install build\-essential libsqlite3\-dev zlib1g\-dev
 .fi
 .RE
 .PP
@@ -334,6 +334,19 @@ and perhaps
 make install
 .fi
 .RE
+.PP
+Tippecanoe now requires features from the 2014 C++ standard. If your compiler is older than
+that, you will need to install a newer one. On MacOS, updating to the lastest XCode should
+get you a new enough version of \fB\fCclang++\fR\&. On Linux, you should be able to upgrade \fB\fCg++\fR with
+.PP
+.RS
+.nf
+sudo add\-apt\-repository \-y ppa:ubuntu\-toolchain\-r/test
+sudo apt\-get update \-y
+sudo apt\-get install \-y g++\-5
+export CXX=g++\-5
+.fi
+.RE
 .SH Examples
 .PP
 Check out some examples of maps made with tippecanoe \[la]MADE_WITH.md\[ra]