1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3srctree=$(dirname "$0")
4
5SHOW_ERROR=
6if [ "$1" = "--show-error" ] ; then
7	SHOW_ERROR=1
8	shift || true
9fi
10
11gccplugins_dir=$($3 -print-file-name=plugin)
12plugincc=$($1 -E -x c++ - -o /dev/null -I"${srctree}"/gcc-plugins -I"${gccplugins_dir}"/include 2>&1 <<EOF
13#include "gcc-common.h"
14#if BUILDING_GCC_VERSION >= 4008 || defined(ENABLE_BUILD_WITH_CXX)
15#warning $2 CXX
16#else
17#warning $1 CC
18#endif
19EOF
20)
21
22if [ $? -ne 0 ]
23then
24	if [ -n "$SHOW_ERROR" ] ; then
25		echo "${plugincc}" >&2
26	fi
27	exit 1
28fi
29
30case "$plugincc" in
31	*"$1 CC"*)
32		echo "$1"
33		exit 0
34		;;
35
36	*"$2 CXX"*)
37		# the c++ compiler needs another test, see below
38		;;
39
40	*)
41		exit 1
42		;;
43esac
44
45# we need a c++ compiler that supports the designated initializer GNU extension
46plugincc=$($2 -c -x c++ -std=gnu++98 - -fsyntax-only -I"${srctree}"/gcc-plugins -I"${gccplugins_dir}"/include 2>&1 <<EOF
47#include "gcc-common.h"
48class test {
49public:
50	int test;
51} test = {
52	.test = 1
53};
54EOF
55)
56
57if [ $? -eq 0 ]
58then
59	echo "$2"
60	exit 0
61fi
62
63if [ -n "$SHOW_ERROR" ] ; then
64	echo "${plugincc}" >&2
65fi
66exit 1
67