New source file for configuration checks

This will be populated in subsequent commits.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/library/Makefile b/library/Makefile
index a880f26..f872934 100644
--- a/library/Makefile
+++ b/library/Makefile
@@ -121,6 +121,7 @@
 OBJS_CRYPTO+=$(THIRDPARTY_CRYPTO_OBJECTS)
 
 OBJS_X509= \
+	   mbedtls_config.o \
 	   x509.o \
 	   x509_create.o \
 	   x509_crl.o \