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#!/bin/sh
# This script is meant to be run by the build system.
set -e
compile="$1"
output_file="$2"
shift 2
tmpfile1=$(mktemp)
tmpfile2=$(mktemp)
cleanup()
{
rm -f $tmpfile1 $tmpfile2
}
trap cleanup EXIT
process()
{
target=$1
shift
for dep in $@; do
echo $target $dep
done
}
# Define KERN_INIT_H so that the INIT_XXX macros aren't expanded.
$compile -E -DKERN_INIT_H "$@" \
| sed -e 's/#.*$//' \
| tr '\n' ' ' \
| tr -s ' ' \
| sed -E -e 's/INIT_OP_DEP\(([a-zA-Z0-9_]*), 1 \)/\1/g' \
| grep -P -o 'INIT_OP_DEFINE\(.*?\)' \
| sed -e 's/^INIT_OP_DEFINE(//' \
| sed -e 's/).*$//' \
| tr -d , \
| while read line; do
process $line
done > $tmpfile1
if [ -z "$(cat $tmpfile1)" ]; then
return 1
fi
# XXX Avoid using pipes because of the lack of a standard -o pipefail variant.
tsort < $tmpfile1 > $tmpfile2
tac < $tmpfile2 > "$output_file"
|
