Add generate_binaries.sh script (#1473)

Add needs_binaries.sh and needs_binaries.sh scripts

tools/generate_binaries.sh

+#!/bin/bash
+#
+# Usage: yes | bash generate_binaries.sh [directory] [start]
+#
+# [directory] Optional directory where the binaries will be stored.
+#             If not provided, a directory relative to the current
+#             directory will be created using the current date.
+#
+#     [start] Optional package name of the first binary build.
+#             Useful if you want to continue where you left off
+#             if the script aborts on a previous attempt.
+#
+# Search for required commands
+cmds="crew git"
+for c in $cmds; do
+  command -v $c > /dev/null && continue || { echo "$c command not found."; exit 1; }
+done
+ 
+# Determine if a packages directory exists from the cloned repository
+packages_dir=$(echo $(git rev-parse --git-dir 2> /dev/null) | sed -e 's,.git,packages,')
+if [ ! -d "$packages_dir" ]; then
+  echo "Not a valid Chromebrew repository."
+  exit 1
+fi
+
+# Generate working directory
+if test $1; then
+  workdir=$1
+  if [ ! -d "$workdir" ]; then
+    mkdir -p $workdir
+  fi
+else
+  workdir=$(date +%Y%m%d%H%M)
+  mkdir $workdir
+fi
+
+# Get architecture
+arch=$(uname -m)
+
+# Exclude fake packages
+exclusions="buildessential glibc parallel wayland xorg_proto"
+
+# Exclude packages without architecture support
+if [[ "$arch" == "aarch64" || "$arch" == "armv7l" ]]; then
+  exclusions="$exclusions cbase dropbox freebasic google_cloud_sdk lldb mesa misctools"
+fi
+
+# Packages that need binary builds
+packages=$(grep -L "$arch:" $packages_dir/*.rb | sed -e "s,$packages_dir/,,g" | cut -d'.' -f1 | xargs)
+
+# Determine the starting package, if necessary
+start=
+if test $2; then
+  for p in $packages; do
+    if [[ "$2" == "$p" ]]; then
+      start=$2
+      break
+    fi
+  done
+fi
+
+# Continue unless there is a starting package
+continue=1
+if test $start; then
+  continue=
+fi
+
+# Change to the working directory
+cd $workdir
+
+# Loop through packages that need a binary build
+for p in $packages; do
+  package=$(ls $p-*.xz 2> /dev/null)
+  # Operate only on packages that don't already have a build
+  if [ ! -f "$package" ]; then
+    if [[ "$start" == "$p" ]]; then
+      continue=1
+    fi
+    # Determine if the package should be excluded
+    exclude=
+    for e in $exclusions; do
+      if [[ "$e" == "$p" ]]; then
+        exclude=1
+        break
+      fi
+    done
+    # Build only if necessary
+    if test $continue; then
+      if ! test $exclude; then
+        crew build $p
+      fi
+    fi
+  fi
+done

tools/needs_binaries.sh

+#!/bin/bash
+if [ ! -d ../packages ]; then
+  echo "Unable to locate packages directory."
+  exit 1
+fi
+cd ../packages
+arch=$(uname -m)
+exclusions=""
+if [[ "$arch" == "aarch64" || "$arch" == "armv7l" ]]; then
+  exclusions="cbase.rb dropbox.rb freebasic.rb google_cloud_sdk.rb lldb.rb mesa.rb misctools.rb"
+fi
+packages=$(grep -L "$arch:" *.rb)
+for p in $packages; do
+  include=1
+  for e in $exclusions; do
+    if [ "$e" == "$p" ]; then
+      include=
+      break
+    fi
+  done
+  if test $include; then
+    grep -L is_fake $p
+  fi
+done