configure: Add --enable-meta, --disable-random [WIP]

For #5.  Needs to be tested.

configure.ac

@@ -69,6 +69,16 @@ AC_SEARCH_LIBS([log2], [m],
   ]
 )
 
+dnl Wren class Meta (default disabled)
+AC_ARG_ENABLE([meta],
+  AS_HELP_STRING([--enable-meta], [Enable the Wren "Meta" class (default disabled)]))
+AM_CONDITIONAL([USE_WREN_META], [test "x$enable_meta" = "xyes"])
+
+dnl Wren class Random (default enabled)
+AC_ARG_ENABLE([random],
+  AS_HELP_STRING([--disable-random], [Disable the Wren "Random" class (default enabled)]))
+AM_CONDITIONAL([USE_WREN_RANDOM], [test "x$enable_random" != "xno"])
+
 dnl === Code coverage =====================================================
 
 dnl For some reason, the coverage data is referring to src/.../glib-2.0.vapi.

wren-pkg/Makefile.am

@@ -48,6 +48,11 @@ libwren_@APIVER@_la_SOURCES = \
 	wren/src/vm/wren_value.h \
 	wren/src/vm/wren_vm.c \
 	wren/src/vm/wren_vm.h \
+	$(EOL)
+
+# --- Meta and Random ---
+
+EXTRA_libwren_@APIVER@_la_SOURCES = \
 	wren/src/optional/wren_opt_meta.c \
 	wren/src/optional/wren_opt_meta.h \
 	wren/src/optional/wren_opt_meta.wren.inc \
@@ -56,11 +61,29 @@ libwren_@APIVER@_la_SOURCES = \
 	wren/src/optional/wren_opt_random.wren.inc \
 	$(EOL)
 
+if USE_WREN_META
+libwren_@APIVER@_la_SOURCES += \
+	wren/src/optional/wren_opt_meta.c \
+	wren/src/optional/wren_opt_meta.h \
+	wren/src/optional/wren_opt_meta.wren.inc \
+	$(EOL)
+endif
+
+if USE_WREN_RANDOM
+libwren_@APIVER@_la_SOURCES += \
+	wren/src/optional/wren_opt_random.c \
+	wren/src/optional/wren_opt_random.h \
+	wren/src/optional/wren_opt_random.wren.inc \
+	$(EOL)
+endif
+
 # === Other Wren files ==================================================
 
 EXTRA_DIST += \
 	wren/AUTHORS \
 	wren/CHANGELOG.md \
 	wren/LICENSE \
 	wren/README.md \
+	wren/src/optional/wren_opt_meta.wren \
+	wren/src/optional/wren_opt_random.wren \
 	$(EOL)