/usr/share/automake-1.11/am/libs.am is in automake 1:1.11.3-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 | ## automake - create Makefile.in from Makefile.am
## Copyright (C) 1994, 1995, 1996, 1998, 1999, 2001, 2002, 2003, 2004, 2006,
## 2007, 2008, 2009  Free Software Foundation, Inc.
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2, or (at your option)
## any later version.
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
## You should have received a copy of the GNU General Public License
## along with this program.  If not, see <http://www.gnu.org/licenses/>.
if %?INSTALL%
include inst-vars.am
endif %?INSTALL%
## ------------ ##
## Installing.  ##
## ------------ ##
if %?INSTALL%
am__installdirs += "$(DESTDIR)$(%NDIR%dir)"
.PHONY install-%EXEC?exec:data%-am: install-%DIR%LIBRARIES
install-%DIR%LIBRARIES: $(%DIR%_LIBRARIES)
	@$(NORMAL_INSTALL)
	test -z "$(%NDIR%dir)" || $(MKDIR_P) "$(DESTDIR)$(%NDIR%dir)"
if %?BASE%
## Funny invocation because Makefile variable can be empty, leading to
## a syntax error in sh.
	@list='$(%DIR%_LIBRARIES)'; test -n "$(%NDIR%dir)" || list=; \
	list2=; for p in $$list; do \
	  if test -f $$p; then \
	    list2="$$list2 $$p"; \
	  else :; fi; \
	done; \
	test -z "$$list2" || { \
	  echo " $(INSTALL_DATA) $$list2 '$(DESTDIR)$(%NDIR%dir)'"; \
	  $(INSTALL_DATA) $$list2 "$(DESTDIR)$(%NDIR%dir)" || exit $$?; }
else !%?BASE%
## Funny invocation because Makefile variable can be empty, leading to
## a syntax error in sh.
	@list='$(%DIR%_LIBRARIES)'; test -n "$(%NDIR%dir)" || list=; \
	$(am__nobase_list) | while read dir files; do \
	  xfiles=; for p in $$files; do \
	    if test -f "$$p"; then xfiles="$$xfiles $$p"; else :; fi; done; \
	  test -z "$$xfiles" || { \
	    test "x$$dir" = x. || { \
	      echo "$(MKDIR_P) '$(DESTDIR)$(%NDIR%dir)/$$dir'"; \
	      $(MKDIR_P) "$(DESTDIR)$(%NDIR%dir)/$$dir"; }; \
	    echo " $(INSTALL_DATA) $$xfiles '$(DESTDIR)$(%NDIR%dir)/$$dir'"; \
	    $(INSTALL_DATA) $$xfiles "$(DESTDIR)$(%NDIR%dir)/$$dir" || exit $$?; }; \
	done
endif !%?BASE%
## We do two loops here so that $(POST_INSTALL) can be empty.  If we
## merge the two loops, we get a syntax error from sh.  Anyway, having
## $(POST_INSTALL) in the middle of the loop essentially renders it
## useless; sh never actually executes this command.  Read the GNU
## Standards for a little enlightenment on this.
	@$(POST_INSTALL)
	@list='$(%DIR%_LIBRARIES)'; test -n "$(%NDIR%dir)" || list=; \
	for p in $$list; do \
	  if test -f $$p; then \
	    %BASE?$(am__strip_dir):f=$$p;% \
## Must ranlib after installing because mod time changes.
## cd to target directory because AIX ranlib messes up with whitespace
## in the argument.
	    echo " ( cd '$(DESTDIR)$(%NDIR%dir)' && $(RANLIB) $$f )"; \
	    ( cd "$(DESTDIR)$(%NDIR%dir)" && $(RANLIB) $$f ) || exit $$?; \
	  else :; fi; \
	done
endif %?INSTALL%
## -------------- ##
## Uninstalling.  ##
## -------------- ##
if %?INSTALL%
.PHONY uninstall-am: uninstall-%DIR%LIBRARIES
uninstall-%DIR%LIBRARIES:
	@$(NORMAL_UNINSTALL)
	@list='$(%DIR%_LIBRARIES)'; test -n "$(%NDIR%dir)" || list=; \
?BASE?	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
?!BASE?	$(am__nobase_strip_setup); files=`$(am__nobase_strip)`; \
	dir='$(DESTDIR)$(%NDIR%dir)'; $(am__uninstall_files_from_dir)
endif %?INSTALL%
## ---------- ##
## Cleaning.  ##
## ---------- ##
.PHONY clean-am: clean-%DIR%LIBRARIES
clean-%DIR%LIBRARIES:
	-test -z "$(%DIR%_LIBRARIES)" || rm -f $(%DIR%_LIBRARIES)
 |