Merge branch '1970-fix-libtool-initialization' into 'main'

Fix libtool initialization

Closes #1970

See merge request isc-projects/bind9!3742

.gitlab-ci.yml

@@ -181,7 +181,6 @@ stages:
     --disable-maintainer-mode \
     --enable-developer \
     --with-libtool \
-    --disable-static \
     --with-cmocka \
     --with-libxml2 \
     --with-json-c \

configure.ac

@@ -110,7 +110,7 @@ AC_PROG_MAKE_SET
 # Checks for programs.
 m4_ifdef([AM_PROG_AR], [AM_PROG_AR]) # call AM_PROG_AR only if available
 
-AC_PROG_LIBTOOL
+AC_PATH_PROG([LIBTOOL], [libtool])
 AS_IF([test -z "$LIBTOOL"],
       [AC_MSG_ERROR([The libtool script could not be found.])])
 AC_PROG_INSTALL