When using automake, I know how to set *FLAGS globally (ie, AM_*FLAGS), and per binary/lib (ie bin_PROGRAMS=foo ; foo_*FLAGS = ...) However, those flag variables apply to every source file for a given primary. What if I have multiple sources that are compiled differently?
bin_PROGRAMS = a a_SOURCES = x.c y.c I want x.c compiled with -Option1 and y.c compiled with -Option2. Section 27.8 of the manual, "Per-Object Flags Emulation", describes a way to accomplish this using libraries, but is that really the ideal solution? It seems like a very hacky solution compared to supporting some syntax for, say, x_c_CFLAGS variables (or something that works with sources used multiple times.. perhaps a_x_c_CFLAGS), as in my example above. That would be much cleaner, I would think, compared to requiring the user to create and link against useless intermediate libraries. Can this be considered for automake 1.12? Also, has anyone verified that there really is no difference between adding additional .o's to the link and .a's containing those .o's? For instance, how does this interact with LTO (link time optimization)?
