set -e

usage() {

}

case $1 in

-h|--help)

usage

exit

;;

if test -z "$1"; then

echo "ERROR: command required" >&2

usage

exit 1

WASI_SDK_PATH="${WASI_SDK_PATH:-/opt/wasi-sdk}"

WASI_SYSROOT="${WASI_SDK_PATH}/share/wasi-sysroot"

if ! test -x "${WASI_SDK_PATH}/bin/clang"; then

echo "Error: ${WASI_SDK_PATH}/bin/clang does not exist." >&2

exit 2

CC="${WASI_SDK_PATH}/bin/clang"

CPP="${WASI_SDK_PATH}/bin/clang-cpp"

CXX="${WASI_SDK_PATH}/bin/clang++"

if test "${WASI_SDK_PATH}" != "/opt/wasi-sdk"; then

CC="${CC} --sysroot=${WASI_SYSROOT}"

CPP="${CPP} --sysroot=${WASI_SYSROOT}"

CXX="${CXX} --sysroot=${WASI_SYSROOT}"

if command -v ccache >/dev/null 2>&1; then

CC="ccache ${CC}"

CPP="ccache ${CPP}"

CXX="ccache ${CXX}"

AR="${WASI_SDK_PATH}/bin/llvm-ar"

RANLIB="${WASI_SDK_PATH}/bin/ranlib"

PKG_CONFIG_PATH=""

PKG_CONFIG_LIBDIR="${WASI_SYSROOT}/lib/pkgconfig:${WASI_SYSROOT}/share/pkgconfig"

PKG_CONFIG_SYSROOT_DIR="${WASI_SYSROOT}"

PATH="${WASI_SDK_PATH}/bin:${PATH}"

export WASI_SDK_PATH WASI_SYSROOT

export CC CPP CXX LDSHARED AR RANLIB

export CFLAGS LDFLAGS

export PKG_CONFIG_PATH PKG_CONFIG_LIBDIR PKG_CONFIG_SYSROOT_DIR

export PATH