Need a way to pass options to libtool

[Bob Friesenhahn <bfriesen at simple dot dallas dot tx dot us>]

Currently Automake Makefiles include text like:

LTCXXCOMPILE = $(LIBTOOL) --mode=compile $(CXX) $(DEFS) \
        $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) \
        $(AM_CXXFLAGS) $(CXXFLAGS)

Notice that there is no means provided to add libtool specific
options.  The only means available is for the user to cut-and-past
this chunk into their Makefile.am so that it overrides Automake's
default.  This has long term negative effects for Automake.

I recommend that Automake definitions which specify how libtool is
used include a place to add libtool options for that mode.  For
example

LTCXXCOMPILE = $(LIBTOOL) $(LTCXXCOMPILEOPTS) --mode=compile $(CXX) $(DEFS) \
        $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) \
        $(AM_CXXFLAGS) $(CXXFLAGS)

This way the user could specify a value for LTCXXCOMPILEOPTS and does
not need to replace the entire text.

Bob
======================================
Bob Friesenhahn
bfriesen@simple.dallas.tx.us
http://www.simplesystems.org/users/bfriesen