#!/bin/bash
#
# SPDX-FileCopyrightText: 2018 Jiri Svoboda
#
# SPDX-License-Identifier: BSD-3-Clause
#
# C Compiler (cc) wrapper
# HelenOS Cross Compiler Wrapper (XCW)
# Facilitate cross-compiling external software to HelenOS
#



XCW="$(dirname "$0")"
BUILD_ROOT="$(dirname "$(dirname "$(dirname "$XCW")")")"
if [ -z "$EXPORT_DIR" ]; then
	EXPORT_DIR="$BUILD_ROOT/export"
fi

HELENOS_EXPORT_ROOT="$EXPORT_DIR"

source "${EXPORT_DIR}/config.sh"

# CC is a compilation driver, so we should check which stage of compilation
# is actually running and select which flags to provide. This makes no
# difference for GCC, but e.g. clang warns when a flag is provided that is
# unused

needs_cflags=true
needs_ldflags=true

for flag in "$@"; do
	case "$flag" in
		-E)
			needs_cflags=false
			needs_ldflags=false
			break
			;;
		-c|-S)
			needs_ldflags=false
			break
			;;
	esac
done

flags="-fwide-exec-charset=UTF-32LE -finput-charset=UTF-8 -fexec-charset=UTF-8"
flags="$flags -isystem ${HELENOS_EXPORT_ROOT}/include/libc -idirafter ${HELENOS_EXPORT_ROOT}/include"

if $needs_cflags; then
	flags="$flags -O3 \
	    -Wall -Wextra -Wno-clobbered -Wno-unused-parameter -Wmissing-prototypes \
	    -std=gnu99 -Werror-implicit-function-declaration -Wwrite-strings -ggdb"

	flags="$flags $HELENOS_CFLAGS"
fi

if $needs_ldflags; then
	flags="$flags $HELENOS_LDFLAGS"
fi

flags="$flags $@"

if $needs_ldflags; then
	flags="$flags $HELENOS_LDLIBS"
fi

echo "helenos-cc" "$@"
PATH="$HELENOS_CROSS_PATH:$PATH" "${HELENOS_TARGET}-gcc" $flags