travis-ci config and build scripts for Ubuntu 14.04 and macOS

.travis.yml

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+language: cpp
+matrix:
+  include:
+    - os: linux
+      dist: trusty
+      sudo: required
+    - os: osx
+script:
+  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then ./travis-macos.sh; fi
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then ./travis-linux.sh; fi

travis-linux.sh

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+#!/bin/bash
+
+set -o verbose
+
+sudo apt-get -qq update
+sudo apt-get -y install libgtk2.0-dev freeglut3 freeglut3-dev libglew-dev mesa-common-dev build-essential libglm-dev libxxf86vm-dev libfreeimage-dev pandoc cmake p7zip-full ninja-build xvfb
+
+# Patch and build wxWidgets
+
+wget https://github.com/wxWidgets/wxWidgets/releases/download/v3.1.0/wxWidgets-3.1.0.7z
+if [[ "daf03ed0006e41334f10ceeb3aa2d20c63aacd42" != $(sha1sum wxWidgets-3.1.0.7z | cut -f1 -d' ') ]] ; then exit 1 ; fi
+7z x -o"wxWidgets" -y wxWidgets-3.1.0.7z > /dev/null
+cd wxWidgets || exit 1
+patch -p0 < ../patches/wxWidgets/*.patch || exit 1
+mkdir build-debug
+cd build-debug
+../configure --quiet --enable-debug --with-opengl --with-gtk=2 --prefix=$(pwd)/install --disable-precomp-headers && make -j2 && make install
+cd ..
+cd ..
+
+# Build TB
+
+mkdir build
+cd build
+cmake .. -GNinja -DCMAKE_BUILD_TYPE=Debug -DwxWidgets_PREFIX=$(pwd)/../wxWidgets/build-debug/install || exit 1
+ninja TrenchBroom-Test || exit 1
+
+# Run tests (wxgtk needs an X server running for the app to initialize)
+
+Xvfb :10 &
+export DISPLAY=:10
+./TrenchBroom-Test

travis-macos.sh

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+#!/bin/bash
+
+set -o verbose
+
+brew update
+brew install cmake ninja p7zip
+
+# Patch and build wxWidgets
+
+wget https://github.com/wxWidgets/wxWidgets/releases/download/v3.1.0/wxWidgets-3.1.0.7z
+if [[ "daf03ed0006e41334f10ceeb3aa2d20c63aacd42" != $(openssl sha1 wxWidgets-3.1.0.7z | cut -f2 -d' ') ]] ; then exit 1 ; fi
+7z x -o"wxWidgets" -y wxWidgets-3.1.0.7z > /dev/null
+cd wxWidgets || exit 1
+patch -p0 < ../patches/wxWidgets/*.patch || exit 1
+mkdir build-debug
+cd build-debug
+../configure --quiet --enable-debug --with-osx_cocoa --with-opengl --with-macosx-version-min=10.6 --prefix=$(pwd)/install --disable-precomp-headers && make -j2 && make install
+cd ..
+cd ..
+
+# Build TB
+
+mkdir build
+cd build
+cmake .. -GNinja -DCMAKE_BUILD_TYPE=Debug -DwxWidgets_PREFIX=$(pwd)/../wxWidgets/build-debug/install || exit 1
+ninja TrenchBroom-Test || exit 1
+./TrenchBroom-Test