Fix missing compilation guard around psa_crypto_driver_wrappers.c

Fix Mbed-TLS#4411. Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
gilles-peskine-arm · May 19, 2021 · ad0e012 · ad0e012
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commit ad0e012
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diff --git a/ChangeLog.d/undefined_reference_without_psa.txt b/ChangeLog.d/undefined_reference_without_psa.txt
@@ -0,0 +1,4 @@
+Bugfix
+   * With MBEDTLS_PSA_CRYPTO_C disabled, some functions were getting built
+     nonetheless, resulting in undefined reference errors when building a
+     shared library. Reported by Guillermo Garcia M. in #4411.
diff --git a/library/psa_crypto_driver_wrappers.c b/library/psa_crypto_driver_wrappers.c
@@ -28,6 +28,8 @@
 
 #include "mbedtls/platform.h"
 
+#if defined(MBEDTLS_PSA_CRYPTO_C)
+
 #if defined(MBEDTLS_PSA_CRYPTO_DRIVERS)
 
 /* Include test driver definition when running tests */
@@ -1777,4 +1779,5 @@ psa_status_t psa_driver_wrapper_mac_abort(
             return( PSA_ERROR_INVALID_ARGUMENT );
     }
 }
-/* End of automatically generated file. */
+
+#endif /* MBEDTLS_PSA_CRYPTO_C */