#!/bin/sh

# Written by djcj <djcj@gmx.de> and released into the Public Domain.

# No license required for any purpose; the work is not subject to copyright in any jurisdiction.

showhelp() {

echo "usage: [CC=gcc] $0 [-m32|-m64] <library>"

exit 0

}

if test "x$1" = "x" ; then

showhelp

elif test "x$1" = "x-m32" ; then

arch="-m32"

bits=" (32 bits)"

lib="$2"

elif test "x$1" = "x-m64" ; then

arch="-m64"

bits=" (64 bits)"

lib="$2"

else

lib="$1"

fi

if test "x$lib" = "x" ; then

showhelp

fi

if test "x$CC" = "x" ; then

cc="gcc"

else

cc="$CC"

fi

test_bin="$(tempfile)"

test_so="$(tempfile -s .so)"

test_c="$(tempfile -s .c)"

echo "int main(){return 0;}" > $test_c

$cc $arch -O0 -shared -Wl,-soname,$lib $test_c -o $test_so

$cc $arch -O0 -Wl,--no-as-needed $test_c -o $test_bin $test_so

$test_bin 2>/dev/null

if test $? -eq 0 ; then

result="found"

exitcode=0

else

result="NOT found"

exitcode=1

fi

rm -f $test_c $test_bin $test_so

echo "$lib$bits $result"

exit $exitcode