Hello Navneet, * Navneet Dalal wrote on Fri, Jun 13, 2008 at 09:13:48AM CEST: > If my makefile.am looks as following, then it automatically generates > mybinary_DEPEDENCIES and set it to ../lib/libutil.la > bin_PROGRAMS = mybinary > LDADD= ../lib//libutil.la > mybinary_SOURCES = mybinary.cpp > > However if my makefile looks like > bin_PROGRAMS = mybinary > LDADD= @MY_LIBS@ > mybinary_SOURCES = mybinary.cpp > > where MY_LIBS is a variable defined as AC_SUBST(MY_LIBS) and set in > configure.in, then mybinary_DEPEDENCIES is set as empty.
Correct. This is hinted at vaguely in <http://www.gnu.org/software/automake/manual/html_node/Program-and-Library-Variables.html> The reason is that automake cannot see whether @SOME_SUBSTITUTION@ will later contain stuff that is unsuitable to be listed as a prerequisite, while with literal values, and $(VARIABLES) which are themselves given literally in the Makefile.am, automake can pick those parts which are suitable. Hope that helps. Cheers, Ralf
