diff -up ./doc/Makefile.old ./doc/Makefile
--- ./doc/Makefile.old	2013-04-07 00:22:01.063639304 +0300
+++ ./doc/Makefile	2013-04-07 00:22:33.195724268 +0300
@@ -14,9 +14,9 @@ manpages:
 	done
 	$(pod2man) --section=3 ../Debconf/Client/ConfModule.pm \
 		> man/gen/Debconf::Client::ConfModule.3pm
-	find .. -maxdepth 1 -perm +100 -type f \( -name debconf -or -name 'debconf-*' \) -printf '%P\n' | \
+	find .. -maxdepth 1 -perm /100 -type f \( -name debconf -or -name 'debconf-*' \) -printf '%P\n' | \
 		xargs -i sh -c "cd .. ; $(pod2man) --section=1 {} > doc/man/gen/{}.1"
-	find .. -maxdepth 1 -perm +100 -type f -name 'dpkg-*' -printf '%P\n' | \
+	find .. -maxdepth 1 -perm /100 -type f -name 'dpkg-*' -printf '%P\n' | \
 		xargs -i sh -c "cd .. ; $(pod2man) --section=8 {} > doc/man/gen/{}.8"
 
 clean:
diff -up ./Makefile.old ./Makefile
--- ./Makefile.old	2013-04-07 00:21:55.258622405 +0300
+++ ./Makefile	2013-04-07 00:22:28.043711543 +0300
@@ -27,7 +27,7 @@ install: install-utils install-rest
 # Anything that goes in the debconf-utils package.
 install-utils:
 	install -d $(prefix)/usr/bin
-	find . -maxdepth 1 -perm +100 -type f -name 'debconf-*' | grep -v debconf-set-selections | grep -v debconf-show | grep -v debconf-copydb | grep -v debconf-communicate | grep -v debconf-apt-progress | grep -v debconf-escape | \
+	find . -maxdepth 1 -perm /100 -type f -name 'debconf-*' | grep -v debconf-set-selections | grep -v debconf-show | grep -v debconf-copydb | grep -v debconf-communicate | grep -v debconf-apt-progress | grep -v debconf-escape | \
 		xargs -i install {} $(prefix)/usr/bin
 
 # Anything that goes in the debconf-i18n package.
@@ -69,9 +69,9 @@ install-rest:
 	install -m 0755 transition_db.pl fix_db.pl $(prefix)/usr/share/debconf/
 	# Install essential programs.
 	install -d $(prefix)/usr/sbin $(prefix)/usr/bin
-	find . -maxdepth 1 -perm +100 -type f -name 'dpkg-*' | \
+	find . -maxdepth 1 -perm /100 -type f -name 'dpkg-*' | \
 		xargs -i install {} $(prefix)/usr/sbin
-	find . -maxdepth 1 -perm +100 -type f -name debconf -or -name debconf-show -or -name debconf-copydb -or -name debconf-communicate -or -name debconf-set-selections -or -name debconf-apt-progress -or -name debconf-escape | \
+	find . -maxdepth 1 -perm /100 -type f -name debconf -or -name debconf-show -or -name debconf-copydb -or -name debconf-communicate -or -name debconf-set-selections -or -name debconf-apt-progress -or -name debconf-escape | \
 		xargs -i install {} $(prefix)/usr/bin
 	# Now strip all pod documentation from all .pm files and scripts.
 	find $(prefix)/usr/share/perl5/ $(prefix)/usr/sbin		\