Please don't top-post on this mailing list. On Tue, Mar 28, 2023, at 12:12 PM, Frederic Berat wrote: > Regarding EGREP, although I agree in principle this can be solved by > using AS_CASE, I'd argue that the component actually required > AC_PROG_EGREP. In principle, that should be enough, and requesting the > user to know that internally there may be some need for > "_AC_PROG_EGREP_TRADITIONAL" that it can't require for, which implies > that using AS_CASE is mandatory, seems excessive. In general, *any* construct of the form case "$var" in foo) AC_CHECK_THING ;; esac at top level of configure.ac (not within the expansion of any other macro) is incorrect and needs to be rewritten using AS_CASE. Same for if statements. See https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.71/html_node/Prerequisite-Macros.html for why. In this specific case, I suspect there _is_ a bug in Autoconf, but more along the lines of "nobody should still be using $EGREP_TRADITIONAL in 2023" than "some macro isn't AC_REQUIREing all of its dependencies." zw
