mbedtls/programs/test/generate_cpp_dummy_build.sh
Gilles Peskine 9b35640e3f Generate cpp_dummy_build.cpp dynamically
Generate programs/test/cpp_dummy_build.cpp dynamically instead of
maintaining it manually. This removes the need to update it when the list of
headers changes.

Include all the headers unconditionally except for the ones that cannot be
included directly.

Support this dynamic generation both with make and with cmake.

Adapt all.sh accordingly. Remove the redundant C build from
component_build_default_make_gcc_and_cxx (it was also done in
component_test_default_out_of_box), leaving a component_test_make_cxx. Also
run the C++ program, because why not. Do this in the full configuration
which may catch a bit more problems in headers.

Fixes #2570 for good.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
Signed-off-by: Thomas Daubney <>
2021-10-11 14:29:16 +01:00

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#!/bin/sh
# 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.
set -e
# Ensure a reproducible order for *.h
export LC_ALL=C
print_cpp () {
cat <<'EOF'
/* Automatically generated file. Do not edit.
*
* This program is a dummy C++ program to ensure Mbed TLS library header files
* can be included and built with a C++ compiler.
*
* 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.
*/
#include "mbedtls/config.h"
EOF
for header in include/mbedtls/*.h include/psa/*.h; do
case ${header#include/} in
psa/crypto_config.h) :;; # not meant for direct inclusion
# Some of the psa/crypto_*.h headers are not meant to be included directly.
# They do have include guards that make them no-ops if psa/crypto.h
# has been included before. Since psa/crypto.h comes before psa/crypto_*.h
# in the wildcard enumeration, we don't need to skip those headers.
*) echo "#include \"${header#include/}\"";;
esac
done
cat <<'EOF'
int main()
{
mbedtls_platform_context *ctx = NULL;
mbedtls_platform_setup(ctx);
mbedtls_printf("CPP Build test passed\n");
mbedtls_platform_teardown(ctx);
}
EOF
}
if [ -d include/mbedtls ]; then
:
elif [ -d ../include/mbedtls ]; then
cd ..
elif [ -d ../../include/mbedtls ]; then
cd ../..
else
echo >&2 "This script must be run from an Mbed TLS source tree."
exit 3
fi
print_cpp >"${1:-programs/test/cpp_dummy_build.cpp}"