maint: allow --enable-static --disable-dl to work again * oct-conf.h.in (OCTAVE_CONF_OCTAVE_LINK_DEPS, OCTAVE_CONF_OCTAVE_LINK_OPTS, OCTAVE_CONF_OCT_LINK_DEPS, OCTAVE_CONF_OCT_LINK_OPTS): New macros. * common.mk (do_subst_config_vals): Substitute them. * toplev.cc (octave_config_info): Add them to the info map * libcruft/link-deps.mk, liboctave/link-deps.mk, src/link-deps.mk: New files. * libcruft/Makefile.am, liboctave/Makefile.am, src/Makefile.am: Include link-deps.mk files to get link options and dependencies. Set link options in _LDFLAGS variable, not _LIBADD variable. * configure.ac (--enable-dl): Update help message. * configure.ac (AMCOND_LINK_ALL_DEPS): New conditional. * liboctave/link-deps.mk, src/link-deps.mk: Use it. * src/DLD-FUNCTIONS/module-files: Store file-specific CPPFLAGS, * LDFLAGS, and LIBRARY info here. src/Makefile.am: Not here. * src/DLD-FUNCTIONS/config-module.awk: Use file-specific CPPFLAGS, LDFLAGS, and LIBRARY info from module-files to generate variable definitions and rules. * src/Makefile.am (DLD_DYNAMIC_SRC, DLD_STATIC_SRC, OCTAVE_LIBS, OCTINTERP_LINK_DEPS): Delete. (octave_LDADD): Set to liboctinerp.la and $(OCTAVE_LINK_DEPS), not $(OCTAVE_LIBS). (octave_LDFLAGS): New variable. (DLD_STATIC_DEF_FILES, DLD_DYNAMIC_DEF_FILES): Delete. (DLD_FUNCTIONS_DEF_FILES): New variable. (DEF_FILES): Set conditionally. (DLD_FUNCTIONS_PKG_ADD_FILE): New conditionally defined variable. Change all uses of hard-coded file name. (DLD-FUNCTIONS/PKG_ADD:): Conditionally define rule. * mkoctfile.in, mkoctfile.cc.in: Update for new linking rules.

--- a/build-aux/common.mk
+++ b/build-aux/common.mk
@@ -535,8 +535,12 @@
   -e "s|%OCTAVE_CONF_MAGICK_LDFLAGS%|\"${MAGICK_LDFLAGS}\"|" \
   -e "s|%OCTAVE_CONF_MAGICK_LIBS%|\"${MAGICK_LIBS}\"|" \
   -e 's|%OCTAVE_CONF_MKOCTFILE_DL_LDFLAGS%|\"@MKOCTFILE_DL_LDFLAGS@\"|' \
+  -e "s|%OCTAVE_CONF_OCTAVE_LINK_DEPS%|\"${OCTAVE_LINK_DEPS}\"|" \
+  -e "s|%OCTAVE_CONF_OCTAVE_LINK_OPTS%|\"${OCTAVE_LINK_OPTS}\"|" \
   -e "s|%OCTAVE_CONF_OCTINCLUDEDIR%|\"${octincludedir}\"|" \
   -e "s|%OCTAVE_CONF_OCTLIBDIR%|\"${octlibdir}\"|" \
+  -e "s|%OCTAVE_CONF_OCT_LINK_DEPS%|\"${OCT_LINK_DEPS}\"|" \
+  -e "s|%OCTAVE_CONF_OCT_LINK_OPTS%|\"${OCT_LINK_OPTS}\"|" \
   -e "s|%OCTAVE_CONF_OPENGL_LIBS%|\"${OPENGL_LIBS}\"|" \
   -e "s|%OCTAVE_CONF_PREFIX%|\"${prefix}\"|" \
   -e "s|%OCTAVE_CONF_PTHREAD_CFLAGS%|\"${PTHREAD_CFLAGS}\"|" \