+# Restore common compilation flags from temporary variables.
+#
+# Compilation flags includes: CPPFLAGS, CFLAGS, CXXFLAGS, LDFLAGS, LIBS,
+# OBJCFLAGS.
+#
+# By default these flags are restored to a global (empty) namespace, but
+# user could restore from specific NAMESPACE by using
+# AX_RESTORE_FLAGS(NAMESPACE) macro.
+#
+# Typical usage is like:
+#
+# AX_SAVE_FLAGS(mypackage)
+# CPPFLAGS="-Imypackagespath ${CPPFLAGS}"
+# dnl ... do some detection ...
+# AX_RESTORE_FLAGS(mypackage)