Re: Cross-directory support

[Roumen Petrov]

Ludovic Courtès wrote:
Hello,
A couple of questions about "cross-directory support" (info "(automake)
Alternative").

Suppose the following layout:

  Makefile.am    -> SUBDIRS = src
  src/
    Makefile.am  -> libfoo_SOURCES = a.c b.c c.c
    a.c
    b.c
    c.c

Switching to a non-recursive `make' model goes like this:

  Makefile.am    -> libfoo_SOURCES = src/a.c src/b.c src/c.c
  src/
    a.c
    b.c
    c.c

Questions:

  1. Is it possible to avoid repeating `src/' in the second case?

  2. Can we somehow arrange the second case so that `libfoo' is built in
     `$top_builddir/src' (as in the first case) rather than
     `$top_builddir'?

May be no. I know projects that use same source file in different 
libraries. It is normal build of different libraries to use different 
preprocessor directives to same source.

Roumen