working on build scripts

scripts/run-build.sh

@@ -0,0 +1,80 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) .NET Foundation and contributors. All rights reserved.
+# Licensed under the MIT license. See LICENSE file in the project root for full license information.
+#
+
+set -e
+
+SOURCE="${BASH_SOURCE[0]}"
+while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
+  DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
+  SOURCE="$(readlink "$SOURCE")"
+  [[ "$SOURCE" != /* ]] && SOURCE="$DIR/$SOURCE" # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
+done
+DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
+
+# Set up the environment to be used for building with clang.
+if which "clang-3.5" > /dev/null 2>&1; then
+    export CC="$(which clang-3.5)"
+    export CXX="$(which clang++-3.5)"
+elif which "clang-3.6" > /dev/null 2>&1; then
+    export CC="$(which clang-3.6)"
+    export CXX="$(which clang++-3.6)"
+elif which clang > /dev/null 2>&1; then
+    export CC="$(which clang)"
+    export CXX="$(which clang++)"
+else
+    error "Unable to find Clang Compiler"
+    error "Install clang-3.5 or clang3.6"
+    exit 1
+fi
+
+# Load Branch Info
+while read line; do
+    if [[ $line != \#* ]]; then
+        IFS='=' read -ra splat <<< "$line"
+        export ${splat[0]}="${splat[1]}"
+    fi
+done < "$DIR/../branchinfo.txt"
+
+# Use a repo-local install directory (but not the artifacts directory because that gets cleaned a lot
+[ -z "$DOTNET_INSTALL_DIR" ] && export DOTNET_INSTALL_DIR=$DIR/../.dotnet_stage0/$(uname)
+[ -d $DOTNET_INSTALL_DIR ] || mkdir -p $DOTNET_INSTALL_DIR
+
+# Ensure the latest stage0 is installed
+$DIR/obtain/install.sh --channel $RELEASE_SUFFIX
+
+# Put stage 0 on the PATH (for this shell only)
+PATH="$DOTNET_INSTALL_DIR/bin:$PATH"
+
+# Increases the file descriptors limit for this bash. It prevents an issue we were hitting during restore
+FILE_DESCRIPTOR_LIMIT=$( ulimit -n )
+if [ $FILE_DESCRIPTOR_LIMIT -lt 1024 ]
+then
+    echo "Increasing file description limit to 1024"
+    ulimit -n 1024
+fi
+
+# Restore the build scripts
+echo "Restoring Build Script projects..."
+(
+    cd $DIR
+    dotnet restore
+)
+
+# Build the builder
+echo "Compiling Build Scripts..."
+dotnet publish "$DIR/dotnet-cli-build" -o "$DIR/dotnet-cli-build/bin" --framework dnxcore50
+
+# Run the builder
+echo "Invoking Build Scripts..."
+
+if [ -f "$DIR/dotnet-cli-build/bin/dotnet-cli-build" ]; then
+    DOTNET_HOME="$DOTNET_INSTALL_DIR/share/dotnet/cli" $DIR/dotnet-cli-build/bin/dotnet-cli-build "$@"
+    exit $?
+else
+    # We're on an older CLI. This is temporary while Ubuntu and CentOS VSO builds are stalled.
+    DOTNET_HOME="$DOTNET_INSTALL_DIR/share/dotnet/cli" $DIR/dotnet-cli-build/bin/Debug/dnxcore50/dotnet-cli-build "$@"
+    exit $?
+fi