URL: <https://savannah.gnu.org/support/?110261>
Summary: _LT_CMD_OLD_ARCHIVE should not inline AC_PROG_RANLIB Project: GNU Libtool Submitted by: zackw Submitted on: Fri 10 Jul 2020 06:54:50 PM UTC Category: None Priority: 5 - Normal Severity: 3 - Normal Status: None Privacy: Public Assigned to: None Originator Email: Open/Closed: Open Discussion Lock: Any Operating System: None _______________________________________________________ Details: Autoconf bug #108503 <https://savannah.gnu.org/support/index.php?108503> reports a conflict between the advice given by libtoolize and the advice given by autoscan: > Let's say that, in an empty directory, I have a configure.ac file > that looks like this: > > AC_INIT([testcase]) > LT_INIT > AC_OUTPUT > > > Then I autoreconf, which puts ltmain.sh into the current > directory. Now when I run autoscan, it produces the following > warnings: > > > Local-Admins-MacBook-Pro:autoconf_bug_reports_dir localadmin$ autoscan > configure.ac: warning: missing AC_PROG_CXX wanted by: ltmain.sh:960 > configure.ac: warning: missing AC_PROG_INSTALL wanted by: ltmain.sh:1028 > configure.ac: warning: missing AC_PROG_MAKE_SET wanted by: ltmain.sh:2163 > configure.ac: warning: missing AC_PROG_RANLIB wanted by: ltmain.sh:2455 > > > So I add these macros to my configure.ac, and now, when I autoreconf > again, it includes this warning: > > > glibtoolize: `AC_PROG_RANLIB' is rendered obsolete by `LT_INIT' > > > If I then go and remove AC_PROG_RANLIB, autoscan will then warn > about it being missing again the next time I run it, leading to an > endless cycle of conflicting warnings. This is happening because _LT_CMD_OLD_ARCHIVE (invoked by LT_INIT) inlines the body of AC_PROG_RANLIB, so autoscan does not know that $RANLIB will be set. If _LT_CMD_OLD_ARCHIVE were to AC_REQUIRE([AC_PROG_RANLIB]) instead of embedding AC_CHECK_TOOL([RANLIB], [ranlib], [:]), there would be no problem. AC_PROG_RANLIB has used AC_CHECK_TOOL since the beginning of the VCS history for Autoconf (in 2001), so if this is a workaround for a very old autoconf that used AC_CHECK_PROG instead of AC_CHECK_TOOL, I don't think it's necessary any more _______________________________________________________ Reply to this item at: <https://savannah.gnu.org/support/?110261> _______________________________________________ Message sent via Savannah https://savannah.gnu.org/