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#! /bin/sh -e
# SPDX-License-Identifier: BSD-3-Clause
# Copyright(c) 2018 Intel Corporation

# Run meson to auto-configure the various builds.
# * all builds get put in a directory whose name starts with "build-"
# * if a build-directory already exists we assume it was properly configured
# Run ninja after configuration is done.

# set pipefail option if possible
PIPEFAIL=""
set -o | grep -q pipefail && set -o pipefail && PIPEFAIL=1

srcdir=$(dirname $(readlink -f $0))/..
MESON=${MESON:-meson}
use_shared="--default-library=shared"

if command -v gmake >/dev/null 2>&1 ; then
	MAKE=gmake
else
	MAKE=make
fi
if command -v ninja >/dev/null 2>&1 ; then
	ninja_cmd=ninja
elif command -v ninja-build >/dev/null 2>&1 ; then
	ninja_cmd=ninja-build
else
	echo "ERROR: ninja is not found" >&2
	exit 1
fi

build () # <directory> <target compiler> <meson options>
{
	builddir=$1
	shift
	targetcc=$1
	shift
	# skip build if compiler not available
	command -v $CC >/dev/null 2>&1 || return 0
	command -v $targetcc >/dev/null 2>&1 || return 0
	if [ ! -f "$builddir/build.ninja" ] ; then
		options="--werror -Dexamples=all $*"
		echo "$MESON $options $srcdir $builddir"
		$MESON $options $srcdir $builddir
		unset CC
	fi
	if [ -n "$TEST_MESON_BUILD_VERY_VERBOSE" ] ; then
		# for full output from ninja use "-v"
		echo "$ninja_cmd -v -C $builddir"
		$ninja_cmd -v -C $builddir
	elif [ -n "$TEST_MESON_BUILD_VERBOSE" ] ; then
		# for keeping the history of short cmds, pipe through cat
		echo "$ninja_cmd -C $builddir | cat"
		$ninja_cmd -C $builddir | cat
	else
		echo "$ninja_cmd -C $builddir"
		$ninja_cmd -C $builddir
	fi
}

if [ "$1" = "-vv" ] ; then
	TEST_MESON_BUILD_VERY_VERBOSE=1
elif [ "$1" = "-v" ] ; then
	TEST_MESON_BUILD_VERBOSE=1
fi
# we can't use plain verbose when we don't have pipefail option so up-level
if [ -z "$PIPEFAIL" -a -n "$TEST_MESON_BUILD_VERBOSE" ] ; then
	echo "# Missing pipefail shell option, changing VERBOSE to VERY_VERBOSE"
	TEST_MESON_BUILD_VERY_VERBOSE=1
fi

# shared and static linked builds with gcc and clang
for c in gcc clang ; do
	command -v $c >/dev/null 2>&1 || continue
	for s in static shared ; do
		export CC="ccache $c"
		build build-$c-$s $c --default-library=$s
	done
done

# test compilation with minimal x86 instruction set
# Set the install path for libraries to "lib" explicitly to prevent problems
# with pkg-config prefixes if installed in "lib/x86_64-linux-gnu" later.
default_machine='nehalem'
ok=$(cc -march=$default_machine -E - < /dev/null > /dev/null 2>&1 || echo false)
if [ "$ok" = "false" ] ; then
	default_machine='corei7'
fi
build build-x86-default cc -Dlibdir=lib -Dmachine=$default_machine $use_shared

c=aarch64-linux-gnu-gcc
# generic armv8a with clang as host compiler
export CC="clang"
build build-arm64-host-clang $c $use_shared \
	--cross-file $srcdir/config/arm/arm64_armv8_linux_gcc
# all gcc/arm configurations
for f in $srcdir/config/arm/arm*gcc ; do
	export CC="ccache gcc"
	build build-$(basename $f | tr '_' '-' | cut -d'-' -f-2) $c \
		$use_shared --cross-file $f
done

# Test installation of the x86-default target, to be used for checking
# the sample apps build using the pkg-config file for cflags and libs
build_path=build-x86-default
export DESTDIR=$(pwd)/$build_path/install-root
$ninja_cmd -C $build_path install

pc_file=$(find $DESTDIR -name libdpdk.pc)
export PKG_CONFIG_PATH=$(dirname $pc_file):$PKG_CONFIG_PATH

for example in cmdline helloworld l2fwd l3fwd skeleton timer; do
	echo "## Building $example"
	$MAKE -C $DESTDIR/usr/local/share/dpdk/examples/$example clean all
done