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#!/bin/bash
# Copyright 2020 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.
# Do not run directly; run build.sh, which runs this in Docker.
# This script builds boringssl, which has already been unpacked in /boring/boringssl.
set -e
id
date
cd /boring
# Go requires -fPIC for linux/amd64 cgo builds.
# Setting -fPIC only affects the compilation of the non-module code in libcrypto.a,
# because the FIPS module itself is already built with -fPIC.
echo '#!/bin/bash
exec clang-'$ClangV' -DGOBORING -fPIC "$@"
' >/usr/local/bin/clang
echo '#!/bin/bash
exec clang++-'$ClangV' -DGOBORING -fPIC "$@"
' >/usr/local/bin/clang++
chmod +x /usr/local/bin/clang /usr/local/bin/clang++
# The BoringSSL tests use Go, and cgo would look for gcc.
export CGO_ENABLED=0
# Modify the support code crypto/mem.c (outside the FIPS module)
# to not try to use weak symbols, because they don't work with some
# Go toolchain / clang toolchain combinations.
perl -p -i -e 's/defined.*ELF.*defined.*GNUC.*/$0 \&\& !defined(GOBORING)/' boringssl/crypto/mem.c
# Verbatim instructions from BoringCrypto build docs.
printf "set(CMAKE_C_COMPILER \"clang\")\nset(CMAKE_CXX_COMPILER \"clang++\")\n" >${HOME}/toolchain
cd boringssl
mkdir build && cd build && cmake -GNinja -DCMAKE_TOOLCHAIN_FILE=${HOME}/toolchain -DFIPS=1 -DCMAKE_BUILD_TYPE=Release ..
ninja
./crypto/crypto_test
cd ../..
if [ "$(./boringssl/build/tool/bssl isfips)" != 1 ]; then
echo "NOT FIPS"
exit 2
fi
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