#!/bin/sh

if [ -z "$SYSROOT" ]; then
	echo "ERROR: You have to set SYSROOT to use cross-emerge-ng!"
	exit 1
fi

# Get host triplet from build platform in /
export CBUILD=$(portageq envvar CHOST)

# Switch to host platform in SYSROOT
export ROOT="${SYSROOT}"
export PORTAGE_CONFIGROOT="${SYSROOT}"

# Get host triplet from host platform in SYSROOT
CHOST=$(portageq envvar CHOST)

# Generate compiler wrappers.
mkdir -p "${SYSROOT}"/etc/crossdev-target
for prog in gcc g++; do
	[ -x "${SYSROOT}/etc/crossdev-target/${prog}" ] && continue
        echo "Generating wrapper ${SYSROOT}/etc/crossdev-target/${prog}"
        cp "__PREFIX__/share/crossdev/wrappers/toolchain-wrapper" "${SYSROOT}/etc/crossdev-target/${prog}"
        sed -i "s/<<PROGRAM>>/"$(echo "${CHOST}-${prog}" | sed -e 's/[\/&]/\\&/g')"/g" "${SYSROOT}/etc/crossdev-target/${prog}"
        sed -i "s/<<SYSROOT>>/"$(echo "${SYSROOT}" | sed -e 's/[\/&]/\\&/g')"/g" "${SYSROOT}/etc/crossdev-target/${prog}"
        chmod +x "${SYSROOT}/etc/crossdev-target/${prog}"
done

if [ -z "$DONT_WRAP_COMPILERS" ]; then
	export CC=${SYSROOT}/etc/crossdev-target/gcc
	export CXX=${SYSROOT}/etc/crossdev-target/g++
fi

exec emerge "$@"