Change the cpp test to be optional

Remove unnecessary defines from the test.
Test by defining TEST_CPP using makefiles or cmake.

CMakeLists.txt

@@ -1,5 +1,9 @@
 cmake_minimum_required(VERSION 2.6)
-project("mbed TLS" C CXX)
+if(TEST_CPP)
+	project("mbed TLS" C CXX)
+else()
+	project("mbed TLS" C)
+endif()
 
 option(USE_PKCS11_HELPER_LIBRARY "Build mbed TLS with the pkcs11-helper library." OFF)
 option(ENABLE_ZLIB_SUPPORT "Build mbed TLS with zlib library." OFF)

programs/Makefile

@@ -70,7 +70,6 @@ APPS =	aes/aescrypt2$(EXEXT)		aes/crypt_and_hash$(EXEXT)	\
 	test/ssl_cert_test$(EXEXT)	test/benchmark$(EXEXT)		\
 	test/selftest$(EXEXT)		test/udp_proxy$(EXEXT)		\
 	test/zeroize$(EXEXT)						\
-	test/header_test$(EXEXT)								\
 	util/pem2der$(EXEXT)		util/strerror$(EXEXT)		\
 	x509/cert_app$(EXEXT)		x509/crl_app$(EXEXT)		\
 	x509/cert_req$(EXEXT)		x509/cert_write$(EXEXT)		\
@@ -80,6 +79,10 @@ ifdef PTHREAD
 APPS +=	ssl/ssl_pthread_server$(EXEXT)
 endif
 
+ifdef TEST_CPP
+APPS += test/header_test$(EXEXT)
+endif
+
 .SILENT:
 
 .PHONY: all clean list

programs/test/CMakeLists.txt

@@ -16,8 +16,10 @@ target_link_libraries(selftest ${libs})
 add_executable(benchmark benchmark.c)
 target_link_libraries(benchmark ${libs})
 
-add_executable(header_test header_test.cpp)
-target_link_libraries(header_test ${libs})
+if(TEST_CPP)
+	add_executable(header_test header_test.cpp)
+	target_link_libraries(header_test ${libs})
+endif()
 
 add_executable(ssl_cert_test ssl_cert_test.c)
 target_link_libraries(ssl_cert_test ${libs})

programs/test/header_test.cpp

@@ -102,14 +102,6 @@
 
 #if defined(MBEDTLS_PLATFORM_C)
 #include "mbedtls/platform.h"
-#else
-#include <stdio.h>
-#include <stdlib.h>
-#define mbedtls_printf     printf
-#define mbedtls_snprintf   snprintf
-#define mbedtls_exit       exit
-#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
-#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
 #endif
 
 #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)