Add a tool (and the first application of it) that could be used

to automate building of libraries.

Prodded by:	bde

1 files changed, 117 insertions, 0 deletions

diff --git a/tools/make_libdeps.sh b/tools/make_libdeps.sh
new file mode 100644
index 0000000..20f4870
--- /dev/null
+++ b/tools/make_libdeps.sh
@@ -0,0 +1,117 @@
+#!/bin/sh -e
+#
+# Copyright (c) 2002 Ruslan Ermilov, The FreeBSD Project
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+# $FreeBSD$
+
+export PATH=/usr/bin
+
+FS=': '				# internal field separator
+LIBDEPENDS=./_libdeps		# intermediate output file
+USRSRC=${1:-/usr/src}		# source root
+LIBS="
+	lib
+	gnu/lib
+	gnu/usr.bin/perl/libperl
+	kerberosIV/lib
+	kerberos5/lib
+	secure/lib
+	usr.bin/lex/lib
+	usr.sbin/pcvt/keycap
+"				# where to scan for libraries
+
+# This sed(1) filter is used to convert -lfoo to path/to/libfoo.
+#
+SED_FILTER="
+sed -E
+    -e's; ;! ;g'
+    -e's;$;!;'
+    -e's;-lm!;lib/msun;g'
+    -e's;-l(krb)!;kerberosIV/lib/lib\1;g'
+    -e's;-l(asn1|gssapi|krb5|roken)!;kerberos5/lib/lib\1;g'
+    -e's;-l(crypto|ssh)!;secure/lib/lib\1;g'
+    -e's;-l([^!]+)!;lib/lib\1;g'
+"
+
+# Generate interdependencies between libraries.
+#
+genlibdepends()
+{
+	(
+		cd ${USRSRC}
+		find ${LIBS} -mindepth 1 -name Makefile |
+		xargs grep -l 'bsd\.lib\.mk' |
+		while read makefile; do
+			libdir=$(dirname ${makefile})
+			deps=$(
+				cd ${libdir}
+				make -V LDADD
+			)
+			if [ "${deps}" ]; then
+				echo ${libdir}"${FS}"$(
+					echo ${deps} |
+					eval ${SED_FILTER}
+				)
+			fi
+		done
+	)
+}
+
+main()
+{
+	if [ ! -f ${LIBDEPENDS} ]; then
+		genlibdepends >${LIBDEPENDS}
+	fi
+
+	prebuild_libs=$(
+		awk -F"${FS}" '{ print $2 }' ${LIBDEPENDS} |rs 0 1 |sort -u
+	)
+	echo "Libraries with dependents:"
+	echo
+	echo ${prebuild_libs} |
+	rs 0 1
+	echo
+
+	echo "List of interdependencies:"
+	echo
+	for lib in ${prebuild_libs}; do
+		grep "^${lib}${FS}" ${LIBDEPENDS} || true
+	done |
+	awk -F"${FS}" '{
+		if ($2 in dependents)
+			dependents[$2]=dependents[$2]" "$1
+		else
+			dependents[$2]=$1
+	}
+	END {
+		for (lib in dependents)
+			print dependents[lib]": " lib
+	}' |
+	sort
+
+	exit 0
+}
+
+main