#!/bin/sh
#

set -e

## This script is invoked by Xcode external targets.
##
## We must guarantee no jobserver is passed through since the file-descriptors
## have been clobbered by Xcode. If this is not done then make behaves as if
## it is allowed to run an infinite number of jobs.
##
MAKEFLAGS=
MFLAGS=

cd $EXTERNAL_BUILD

## re/configure if not configured by Xcode or if missing top-makefile
if [ $EXTERNAL_METHOD != 'xcode' -o ! -f $EXTERNAL_BUILD/GNUmakefile ]; then
    ## compute --arch value based on Xcode configuration naming convention
    case "$CONFIGURATION" in
    *.i386)
        args="--arch=i386"
        ;;
    *.x86_64)
        args="--arch=x86_64"
        ;;
    *.ppc)
        args="--arch=ppc"
        ;;
    *.ppc64)
        args="--arch=ppc64"
        ;;
    *)
        args=
        ;;
    esac

    ## invoke configure with (hidden) option which indicates conf performed by xcode
    $EXTERNAL_PROJECT/configure PATH=$PATH --conf-method=xcode $args
fi

## safeguard against passing blank value which would result in unlimited jobs
if [ -z "$EXTERNAL_JOBS" ]; then
    jobs=
else
    jobs=--jobs=$EXTERNAL_JOBS
fi

spec="$TARGET_NAME:$ACTION"
echo "env specification: $spec"

## compute goals
case "$spec" in
    contrib:clean)
        goals=contrib.xclean
        ;;
    contrib:*)
        goals=contrib.install
        ;;
    external:clean)
        goals=clean
        ;;
    external:*)
        if [ -z "$EXTERNAL_GOALS" ]; then
            goals=build
        else
            goals="$EXTERNAL_GOALS"
        fi
        vars="$EXTERNAL_VARS"
        ;;
    libhb:clean)
        goals=libhb.clean
        ;;
    libhb:*)
        goals=libhb.build
        ;;
    *)
        echo "ERROR: invalid env specification: $spec"
        exit 1
        ;;
esac

## handoff
set -x
make -C $EXTERNAL_BUILD BUILD.method=xcode $jobs $goals $vars