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