Consider the following: % cat >configure.ac <<'EOF' AC_INIT([test], [0])
AM_INIT_AUTOMAKE([foreign]) AM_CONDITIONAL([FOO], [true]) AC_CONFIG_FILES([Makefile]) AC_OUTPUT EOF % cat >Makefile.am <<'EOF' if FOO all-local: bar bar: ; @echo bar endif all-local: baz baz: ; @echo baz EOF On this input, Automake is producing the following warning: Makefile.am:6: warning: all-local was already defined in condition FOO, which is included in condition TRUE ... Makefile.am:2: ... 'all-local' previously defined here This warning makes no sense, because there is no problem with this Makefile.am as far as I can see. However, the warnings seem to be just noise as the generated Makefile.in appears correct and works fine. The conditional there is important: Automake only appears to warn when one of the all-local rules is inside a conditional and the other is not.
