#!/bin/bash
export LC_ALL=C
set -e
CC="${CC:-cc}"
CXX="${CXX:-c++}"
GCC="${GCC:-gcc}"
GXX="${GXX:-g++}"
OBJDUMP="${OBJDUMP:-objdump}"
MACHINE="${MACHINE:-$(uname -m)}"
testname=$(basename "$0" .sh)
echo -n "Testing $testname ... "
cd "$(dirname "$0")"/../..
t=out/test/elf/$testname
mkdir -p $t

cat <<EOF | $CC -fcommon -c -xc -o $t/a.o -
int foo;
EOF

cat <<EOF | $CC -fcommon -c -xc -o $t/b.o -
int foo;

int main() {
  return 0;
}
EOF

$CC -B. -o $t/exe $t/a.o $t/b.o > $t/log
! fgrep -q 'multiple common symbols' $t/log || false

$CC -B. -o $t/exe $t/a.o $t/b.o -Wl,-warn-common 2> $t/log
fgrep -q 'multiple common symbols' $t/log

echo OK