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#!/usr/bin/env bash
# Copyright (C) 2015-2016 Luke Shumaker
# The reason we do `find`/`while read`-loops instead of `find -exec` commands
# is that we want errors from the inner loop to bubble up.
fixup_makefiles() (
find "$@" -type f -name Makefile | while read -r filename; do
{
<"$filename" sed -r \
-e "s|(/\.\.)*/config.mk|/$(realpath -ms --relative-to="$(dirname -- "$filename")" config.mk)|" \
-e '/^nested\.subdirs/d' \
-e '/^include \$\(topsrcdir\)\/build-aux\/Makefile\.tail\.mk$/d'
echo
find "$(dirname "$filename")" -mindepth 2 -maxdepth 2 -name Makefile -print0 |
xargs -r0 dirname -z -- |
xargs -r0 basename -a -z |
xargs -r0 printf 'nested.subdirs += %s\n' | sort
echo
echo 'include $(topsrcdir)/build-aux/Makefile.tail.mk'
} | cat -s | build-aux/write-ifchanged "$filename"
done
)
fixup_includes() (
dirs=($(find "$@" -type d -name include))
if [[ ${#dirs[@]} -gt 0 ]]; then
find "${dirs[@]}" -type d | while read -r dir; do
lib="${dir##*/}"
find "$dir" -type f | while read -r filename; do
>&2 printf ' => sed -r %q < %q\n' "s|$lib/||" "$filename"
sed -r "s|$lib/||" < "$filename" | build-aux/write-ifchanged "$filename"
done
done
fi
find "$@" \( -name '*.h' -o -name '*.c' -o -name '*.gperf' \) -type f | while read -r filename; do
false
# We copy the write-ifchanged logic to here, because we have a
# higher-than usual chance of the main command failing. In a
# Makefile we would handle this by setting .DELETE_ON_ERROR:,
# but we can't do that here, so we have to inter-mingle the
# logics.
local outfile="$filename"
tmpfile="$(dirname "$outfile")/.tmp.${outfile##*/}.tmp"
local r=0
"$0"--includes "$filename" > "$tmpfile" || r=$?
if [[ $r != 0 ]]; then
rm -f "$tmpfile" || :
(exit $r)
fi
if cmp -s "$tmpfile" "$outfile"; then
rm -f "$tmpfile" || :
else
mv -f "$tmpfile" "$outfile"
fi
done
rm -rf -- "$0"--includes.cache
)
main() {
set -e
set -o pipefail
export LC_COLLATE=C
fixup_makefiles "$@"
fixup_includes "$@"
}
main "$@"
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