Info Catalog automake-1.16: Conditional Libtool Libraries automake-1.16: A Shared Library automake-1.16: Libtool Convenience Libraries

automake-1.16: Conditional Libtool Sources

 
 8.3.4 Libtool Libraries with Conditional Sources
 ------------------------------------------------
 
 Conditional compilation of sources in a library can be achieved in the
 same way as conditional compilation of sources in a program (⇒
 Conditional Sources).  The only difference is that ‘_LIBADD’ should be
 used instead of ‘_LDADD’ and that it should mention libtool objects
 (‘.lo’ files).
 
    So, to mimic the ‘hello’ example from ⇒Conditional Sources, we
 could build a ‘libhello.la’ library using either ‘hello-linux.c’ or
 ‘hello-generic.c’ with the following ‘Makefile.am’.
 
      lib_LTLIBRARIES = libhello.la
      libhello_la_SOURCES = hello-common.c
      EXTRA_libhello_la_SOURCES = hello-linux.c hello-generic.c
      libhello_la_LIBADD = $(HELLO_SYSTEM)
      libhello_la_DEPENDENCIES = $(HELLO_SYSTEM)
 
 And make sure ‘configure’ defines ‘HELLO_SYSTEM’ as either
 ‘hello-linux.lo’ or ‘hello-generic.lo’.
 
    Or we could simply use an Automake conditional as follows.
 
      lib_LTLIBRARIES = libhello.la
      libhello_la_SOURCES = hello-common.c
      if LINUX
      libhello_la_SOURCES += hello-linux.c
      else
      libhello_la_SOURCES += hello-generic.c
      endif
 

Info Catalog automake-1.16: Conditional Libtool Libraries automake-1.16: A Shared Library automake-1.16: Libtool Convenience Libraries