#!/bin/sh

if [ "$(id -u)" = "0" ]; then
   echo "Running as root will mess up file permissions. Aborting ..." 1>&2
   exit 1
fi

die()
{
  echo ERROR: $*
  exit 1
}

cd "$(dirname $0)"
# Now in build/workspaces/ (where we assume this script resides)

# Parse command-line options:
premake_args=""

with_system_premake5=false
enable_atlas=true

JOBS=${JOBS:="-j2"}

for i in "$@"
do
  case $i in
    --with-system-premake5 ) with_system_premake5=true ;;
    --enable-atlas ) enable_atlas=true ;;
    --disable-atlas ) enable_atlas=false ;;
    -j* ) JOBS=$i ;;
    # Assume any other --options are for Premake
    --* ) premake_args="${premake_args} $i" ;;
  esac
done

if [ "$enable_atlas" = "true" ]; then
  premake_args="${premake_args} --atlas"
  if [ "$(uname -s)" = "Darwin" ]; then
    # Provide path to wx-config on OS X (as wxwidgets doesn't support pkgconfig)
    export WX_CONFIG="${WX_CONFIG:="$(pwd)/../../libraries/macos/wxwidgets/bin/wx-config"}"
  else
    export WX_CONFIG="${WX_CONFIG:="wx-config"}"
  fi

  if [ ! -x "$(command -v $WX_CONFIG)" ]
  then
    echo 'WX_CONFIG must be set and valid or wx-config must be present when --atlas is passed as argument.'
    exit 1
  fi
fi

if [ "`uname -s`" = "Darwin" ]; then
  # Set minimal SDK version
  export MIN_OSX_VERSION=${MIN_OSX_VERSION:="10.12"}
fi

# Now build Premake or use system's.

cd ../premake
premake_command="premake5"

if [ "$with_system_premake5" = "false" ]; then
  # Build bundled premake
  MAKE=${MAKE} JOBS=${JOBS} ./build.sh || die "Premake 5 build failed"

  premake_command="premake5/bin/release/premake5"
fi

echo

# If we're in bash then make HOSTTYPE available to Premake, for primitive arch-detection
export HOSTTYPE="$HOSTTYPE"
# Now run Premake to create the makefiles
echo "Premake args: ${premake_args}"
if [ "`uname -s`" != "Darwin" ]; then
  ${premake_command} --file="premake5.lua" --outpath="../workspaces/gcc/" ${premake_args} gmake || die "Premake failed"
else
  ${premake_command} --file="premake5.lua" --outpath="../workspaces/gcc/" --macosx-version-min="${MIN_OSX_VERSION}" ${premake_args} gmake || die "Premake failed"
  # Also generate xcode workspaces if on OS X
  ${premake_command} --file="premake5.lua" --outpath="../workspaces/xcode4" --macosx-version-min="${MIN_OSX_VERSION}" ${premake_args} xcode4 || die "Premake failed"
fi

# test_root.cpp gets generated by cxxtestgen and passing different arguments to premake could require a regeneration of this file.
# It doesn't depend on anything in the makefiles, so make won't notice that the prebuild command for creating test_root.cpp needs to be triggered.
# We force this by deleting the file.
rm -f ../../source/test_root.cpp