Add dependencies script

.github/scripts/build.sh

@@ -1,3 +1,7 @@
+#! /usr/bin/env sh
+
+set -ex
+
 echo "Building..."
 
 sudo apt-get -qq update
@@ -21,7 +25,7 @@ then
     then
       sudo update-alternatives --install "/usr/bin/ld" "ld" "/usr/bin/ld.gold" 10;
     fi;
-  fi;
+fi;
 
 # Install dependencies
-./travis-deps.sh
+./.github/scripts/dependencies.sh

.github/scripts/dependencies.sh

@@ -0,0 +1,82 @@
+#! /usr/bin/env sh
+
+set -ex
+
+DEP_SRC=$HOME/dependency_source/
+
+case $TRAVIS_OS_NAME in
+linux)
+    DEP_ROOT=$HOME/staging
+    ;;
+windows)
+    DEP_ROOT=/c/staging
+    ;;
+esac
+
+install_gnustep_make() {
+    cd $DEP_SRC
+    git clone https://github.com/gnustep/tools-make.git
+    cd tools-make
+    if [ -n "$RUNTIME_VERSION" ]
+    then
+        WITH_RUNTIME_ABI="--with-runtime-abi=${RUNTIME_VERSION}"
+    else
+        WITH_RUNTIME_ABI=""
+    fi
+    $mingw ./configure --prefix=$DEP_ROOT --with-library-combo=$LIBRARY_COMBO $WITH_RUNTIME_ABI
+    $mingw make install
+    echo Objective-C build flags: `$DEP_ROOT/bin/gnustep-config --objc-flags`
+}
+
+install_ng_runtime() {
+    cd $DEP_SRC
+    git clone https://github.com/gnustep/libobjc2.git
+    cd libobjc2
+    git submodule init
+    git submodule sync
+    git submodule update
+    cd ..
+    mkdir libobjc2/build
+    cd libobjc2/build
+    export CC="clang"
+    export CXX="clang++"
+    export CXXFLAGS="-std=c++11"
+    cmake \
+      -DTESTS=off \
+      -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+      -DGNUSTEP_INSTALL_TYPE=NONE \
+      -DCMAKE_INSTALL_PREFIX:PATH=$DEP_ROOT \
+      ../
+    make install
+}
+
+install_libdispatch() {
+    cd $DEP_SRC
+    # will reference upstream after https://github.com/apple/swift-corelibs-libdispatch/pull/534 is merged
+    git clone -b system-blocksruntime https://github.com/ngrewe/swift-corelibs-libdispatch.git
+    mkdir swift-corelibs-libdispatch/build
+    cd swift-corelibs-libdispatch/build
+    export CC="clang"
+    export CXX="clang++"
+    export LIBRARY_PATH=$DEP_ROOT/lib;
+    export LD_LIBRARY_PATH=$DEP_ROOT/lib:$LD_LIBRARY_PATH;
+    export CPATH=$DEP_ROOT/include;
+    cmake \
+      -DBUILD_TESTING=off \
+      -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+      -DCMAKE_INSTALL_PREFIX:PATH=$DEP_ROOT \
+      -DINSTALL_PRIVATE_HEADERS=1 \
+      -DBlocksRuntime_INCLUDE_DIR=$DEP_ROOT/include \
+      -DBlocksRuntime_LIBRARIES=$DEP_ROOT/lib/libobjc.so \
+      ../
+    make install
+}
+
+mkdir -p $DEP_SRC
+if [ "$LIBRARY_COMBO" = 'ng-gnu-gnu' ]
+then
+    install_ng_runtime
+    install_libdispatch
+fi
+
+install_gnustep_make