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#!/bin/sh
found=false
printf >&2 "Checking for old/new clone mechanics..."
cat > dummy.c <<EOF
#include <sched.h>
int clone(int (*fn)(void *), void *child_stack, int flags, void *arg, ...) { return 0; }
EOF
if cc -c -o dummy.o dummy.c >/dev/null 2>&1; then
rm -f dummy.c dummy.o
echo >&2 "New clone."
echo "linux/newclone"
found=true
fi
cat > dummy.c <<EOF
#include <sched.h>
int clone(int (*fn)(void *), void *child_stack, int flags, void *arg) { return 0; }
EOF
if ! $found && cc -c -o dummy.o dummy.c >/dev/null 2>&1; then
rm -f dummy.c dummy.o
echo >&2 "Old clone."
echo "linux/oldclone"
found=true
fi
rm -f dummy.c dummy.o
if ! $found; then
echo >&2 "Can't tell, omitting clone(2) support."
fi
if $port_xattr; then
echo "linux/xattr"
else
echo "linux/noxattr"
fi
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