Ubuntu 18.04 (bionic) (#95)

* Updating supported Ubuntu to 18.04 (bionic).

* Update README and comments to point to the new supported Ubuntu version.

.travis.yml

@@ -2,7 +2,7 @@ matrix:
   include:
     - os: linux
       language: c
-      dist: trusty
+      dist: bionic
       sudo: required
     - os: osx
       language: objective-c

README.md

@@ -39,7 +39,7 @@ Inc.
 These are the instructions for installing Nu on a Macintosh or Linux system. 
 Linux builds require several additional dependencies. The included 
 [ubuntu.sh](ubuntu.sh) script can be used to install these dependencies on 
-a system running Ubuntu 14.04 (and possibly other versions). Installation 
+a system running Ubuntu 18.04 (and possibly other versions). Installation 
 instructions for some other UNIX-based operating systems (Debian, OpenSolaris, 
 and FreeBSD) are in [notes/OBSOLETE](notes/OBSOLETE) and will probably not 
 work without modifications. Macintosh and Ubuntu builds are verified with
@@ -103,9 +103,6 @@ Apple iPhone.
 * [notes/TODO](https://github.com/timburks/nu/blob/master/notes/TODO) contains some open issues that I'd like to address in Nu.
 * The [examples](https://github.com/timburks/nu/tree/master/examples) directory contains several fun and interesting examples.
 
-TextMate users can drag and drop share/Nu.tmbundle onto the TextMate 
-application icon to add Nu-specific features to TextMate.
-
 ## Author
 
 Tim Burks ([email protected])<br/>

ubuntu.sh

@@ -8,7 +8,7 @@
 # with Apple's modern Objective-C runtime. This new runtime
 # allows Nu to be ported to Linux+GNUstep without difficulty.
 #
-# Tested with ubuntu-14.04
+# Tested with ubuntu-18.04
 # Other Ubuntu and Debian installations may also work well.
 #
 # Thanks to Tobias Lensing for pointing the way.
@@ -37,45 +37,45 @@ sudo apt-get install libfreetype6-dev -y
 sudo apt-get install libcairo2-dev -y
 sudo apt-get install libxt-dev -y
 sudo apt-get install libgl1-mesa-dev -y
-sudo apt-get remove libdispatch-dev -y
 sudo apt-get install gdb -y
+sudo apt-get install cmake -y
+sudo apt-get install llvm -y
+sudo apt-get install libc++-dev -y
+sudo apt-get install libxslt1-dev -y
+sudo apt-get install libgnutls28-dev -y
+sudo apt-get install libdispatch-dev -y
 
 mkdir -p /tmp/SETUP
 cd /tmp/SETUP
 
-#
-# A few modifications were needed to fix problems with 
-# libobjc2 and gnustep-base. To maintain stability, we
-# work with a fork on github.
-#
-git clone https://github.com/nulang/gnustep-libobjc2.git
-git clone https://github.com/nulang/gnustep-make.git
-git clone https://github.com/nulang/gnustep-base.git
+git clone https://github.com/programming-nu/gnustep-libobjc2.git
+git clone https://github.com/programming-nu/tools-make.git
+git clone https://github.com/programming-nu/libs-base.git
 
 echo Installing libobjc2
 export CC=clang
+export CXX=clang++
 cd gnustep-libobjc2
-make clean
-make
+mkdir Build
+cd Build
+cmake ..
 sudo make install
 cd /tmp/SETUP
 
-echo Installing gnustep-make
-cd gnustep-make
-./configure
+echo Installing gnustep make
+cd tools-make
+./configure --with-library-combo=ng-gnu-gnu CC=clang CXX=clang++
 make clean
 make
 sudo make install
 cd /tmp/SETUP
 
-echo Installing gnustep-base
-cd gnustep-base
-./configure
+echo Installing gnustep base
+cd libs-base
+./configure CC=clang CXX=clang++
 make clean
 make
 sudo make install
 cd /tmp/SETUP
 
-sudo apt-get install libdispatch-dev -y
-
 echo Pre-install script finished successfully. You may now build Nu.