Merge pull request #8477 from paul-elliott-arm/full_no_platform_2_28

[Backport 2.28] Add build preset full_no_platform

scripts/config.py

@@ -345,6 +345,22 @@ def continuation(name, active, section):
         return adapter(name, active, section)
     return continuation
 
+def no_platform_adapter(adapter):
+    """Modify an adapter to disable platform symbols.
+
+    ``no_platform_adapter(adapter)(name, active, section)`` is like
+    ``adapter(name, active, section)``, but unsets all platform symbols other
+    ``than MBEDTLS_PLATFORM_C.
+    """
+    def continuation(name, active, section):
+        # Allow MBEDTLS_PLATFORM_C but remove all other platform symbols.
+        if name.startswith('MBEDTLS_PLATFORM_') and name != 'MBEDTLS_PLATFORM_C':
+            return False
+        if adapter is None:
+            return active
+        return adapter(name, active, section)
+    return continuation
+
 class ConfigFile(Config):
     """Representation of the Mbed TLS configuration read for a file.
 
@@ -517,6 +533,10 @@ def add_adapter(name, function, description):
                     """Uncomment most non-deprecated features.
                     Like "full", but without deprecated features.
                     """)
+        add_adapter('full_no_platform', no_platform_adapter(full_adapter),
+                    """Uncomment most non-platform features.
+                    Like "full", but without platform features.
+                    """)
         add_adapter('realfull', realfull_adapter,
                     """Uncomment all boolean #defines.
                     Suitable for generating documentation, but not for building.""")

tests/scripts/all.sh

@@ -2555,22 +2555,14 @@ component_test_no_platform () {
     # This should catch missing mbedtls_printf definitions, and by disabling file
     # IO, it should catch missing '#include <stdio.h>'
     msg "build: full config except platform/fsio/net, make, gcc, C99" # ~ 30s
-    scripts/config.py full
+    scripts/config.py full_no_platform
     scripts/config.py unset MBEDTLS_PLATFORM_C
     scripts/config.py unset MBEDTLS_NET_C
-    scripts/config.py unset MBEDTLS_PLATFORM_MEMORY
-    scripts/config.py unset MBEDTLS_PLATFORM_PRINTF_ALT
-    scripts/config.py unset MBEDTLS_PLATFORM_FPRINTF_ALT
-    scripts/config.py unset MBEDTLS_PLATFORM_SNPRINTF_ALT
-    scripts/config.py unset MBEDTLS_PLATFORM_VSNPRINTF_ALT
-    scripts/config.py unset MBEDTLS_PLATFORM_TIME_ALT
-    scripts/config.py unset MBEDTLS_PLATFORM_EXIT_ALT
-    scripts/config.py unset MBEDTLS_PLATFORM_NV_SEED_ALT
-    scripts/config.py unset MBEDTLS_ENTROPY_NV_SEED
     scripts/config.py unset MBEDTLS_FS_IO
     scripts/config.py unset MBEDTLS_PSA_CRYPTO_SE_C
     scripts/config.py unset MBEDTLS_PSA_CRYPTO_STORAGE_C
     scripts/config.py unset MBEDTLS_PSA_ITS_FILE_C
+    scripts/config.py unset MBEDTLS_ENTROPY_NV_SEED
     # Note, _DEFAULT_SOURCE needs to be defined for platforms using glibc version >2.19,
     # to re-enable platform integration features otherwise disabled in C99 builds
     make CC=gcc CFLAGS='-Werror -Wall -Wextra -std=c99 -pedantic -Os -D_DEFAULT_SOURCE' lib programs