makefile - Is there a way to tell automake not to interpret part of the automakefile?

Question

Is there a way to tell automake not to interpret part of the Makefile.am?

Specifically, I am trying to encode a Makefile conditional in a Makefile.am. As other people have noticed, this doesn't work because automake interprets the endif construct.

Is there any way to escape or quote strings in Makefile.am files so that automake copies them verbatim into the destination Makefile? Specifically I don't want it to interpret the endif in something like:

ifeq "$(SOMEVAR)" ""
SOMEVAR="default_value"
endif

Answer 1

The reason automake does conditionals is because some dinosaur makes don't. That said, if you really must do this, you could define your snippet as a variable in configure.ac and AC_SUBST it into your Makefile. That way, automake won't get a chance to see it. Remember to use AM_SUBST_NOTMAKE to avoid creating a line like FOO = @FOO@.)

dnl In configure.ac:
snippet='
ifeq ($(somevar),Y)
foo
endif
'
AC_SUBST([snippet])
AM_SUBST_NOTMAKE([snippet])

and:

## In Makefile.am:
@snippet@

I sincerely hope there's a better way than this.