psa: Introduce psa/build_info.h
The PSA cryptography repository is based to
start with on the PSA cryptography implementation
in Mbed TLS but with a different directority
structure, build system and build configuration.
The build-time configuration information in the
PSA cryptography repository is psa/build_info.h.
This commit introduces this file in Mbed TLS to
be used in place of mbedtls/build_info.h (but
basically just an alias to it) in PSA headers.
This is to ease the update of the PSA cryptography
repository.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/include/psa/build_info.h b/include/psa/build_info.h
new file mode 100644
index 0000000..ce27855
--- /dev/null
+++ b/include/psa/build_info.h
@@ -0,0 +1,32 @@
+/**
+ * \file build_info.h
+ *
+ * \brief Build-time PSA configuration info
+ *
+ * Include this file if you need to depend on the
+ * configuration options defined in mbedtls_config.h or MBEDTLS_CONFIG_FILE
+ * in PSA cryptography core specific files.
+ */
+/*
+ * Copyright The Mbed TLS Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef PSA_CRYPTO_BUILD_INFO_H
+#define PSA_CRYPTO_BUILD_INFO_H
+
+#include "mbedtls/build_info.h"
+
+#endif /* PSA_CRYPTO_BUILD_INFO_H */
diff --git a/include/psa/crypto_platform.h b/include/psa/crypto_platform.h
index 2853496..ee41c89 100644
--- a/include/psa/crypto_platform.h
+++ b/include/psa/crypto_platform.h
@@ -34,9 +34,14 @@
#define PSA_CRYPTO_PLATFORM_H
#include "mbedtls/private_access.h"
-/* Include the Mbed TLS configuration file, the way Mbed TLS does it
- * in each of its header files. */
-#include "mbedtls/build_info.h"
+/*
+ * Include the build-time configuration information file. Here, we do not
+ * include `"mbedtls/build_info.h"` directly but `"psa/build_info.h"`, which
+ * is basically just an alias to it. This is to ease the maintenance of the
+ * PSA cryptography repository which has a different build system and
+ * configuration.
+ */
+#include "psa/build_info.h"
/* PSA requires several types which C99 provides in stdint.h. */
#include <stdint.h>
diff --git a/include/psa/crypto_sizes.h b/include/psa/crypto_sizes.h
index 3d6bb2c..54b57f5 100644
--- a/include/psa/crypto_sizes.h
+++ b/include/psa/crypto_sizes.h
@@ -40,9 +40,14 @@
#ifndef PSA_CRYPTO_SIZES_H
#define PSA_CRYPTO_SIZES_H
-/* Include the Mbed TLS configuration file, the way Mbed TLS does it
- * in each of its header files. */
-#include "mbedtls/build_info.h"
+/*
+ * Include the build-time configuration information file. Here, we do not
+ * include `"mbedtls/build_info.h"` directly but `"psa/build_info.h"`, which
+ * is basically just an alias to it. This is to ease the maintenance of the
+ * PSA cryptography repository which has a different build system and
+ * configuration.
+ */
+#include "psa/build_info.h"
#define PSA_BITS_TO_BYTES(bits) (((bits) + 7) / 8)
#define PSA_BYTES_TO_BITS(bytes) ((bytes) * 8)