commit 0bc2cf1263d57c9464234d491254ea7b435bbbcd
from: Thomas Adam <ThomasAdam@users.noreply.github.com>
via: Thomas Adam <thomas@xteddy.org>
date: Thu Mar 16 14:40:31 2023 UTC

portable: template: allow for YACC

As with the main got project, allow for template to use the YACC
environment variable -- either directly, or indirectly if set
via ./configure in the main got project.

commit - 8d60d668faa58a809d2f1244697a7a5e285951b7
commit + 0bc2cf1263d57c9464234d491254ea7b435bbbcd
blob - 2970357a4c1e353d359696deeb168b0f20d39dad
blob + b6a78ab567e1b010a38fbb130b5682c837986041
--- template/configure.ac
+++ template/configure.ac
@@ -20,8 +20,14 @@ SAVED_CFLAGS="$CFLAGS"
 test -n "$HOSTCC"	&& export CC="$HOSTCC"
 test -n "$HOSTCFLAGS"	&& export CFLAGS="$SAVED_CFLAGS $HOSTCFLAGS"
 
+YACC_OVERRIDE=yes
+
 AC_PROG_CC
-AC_PROG_YACC
+
+if test -z "$YACC"; then
+	YACC_OVERRIDE="no"
+	AC_PROG_YACC
+fi
 PKG_PROG_PKG_CONFIG
 
 PKG_CHECK_MODULES(LIBBSD, libbsd-overlay, [