1 #!/bin/bash
2 # Copyright 2020 The Go Authors. All rights reserved.
3 # Use of this source code is governed by a BSD-style
4 # license that can be found in the LICENSE file.
5 6 # Do not run directly; run build.sh, which runs this in Docker.
7 # This script builds boringssl, which has already been unpacked in /boring/boringssl.
8 9 set -e
10 id
11 date
12 cd /boring
13 14 # Go requires -fPIC for linux/amd64 cgo builds.
15 # Setting -fPIC only affects the compilation of the non-module code in libcrypto.a,
16 # because the FIPS module itself is already built with -fPIC.
17 echo '#!/bin/bash
18 exec clang-'$ClangV' -DGOBORING -fPIC "$@"
19 ' >/usr/local/bin/clang
20 echo '#!/bin/bash
21 exec clang++-'$ClangV' -DGOBORING -fPIC "$@"
22 ' >/usr/local/bin/clang++
23 chmod +x /usr/local/bin/clang /usr/local/bin/clang++
24 25 # The BoringSSL tests use Go, and cgo would look for gcc.
26 export CGO_ENABLED=0
27 28 # Modify the support code crypto/mem.c (outside the FIPS module)
29 # to not try to use weak symbols, because they don't work with some
30 # Go toolchain / clang toolchain combinations.
31 perl -p -i -e 's/defined.*ELF.*defined.*GNUC.*/$0 \&\& !defined(GOBORING)/' boringssl/crypto/mem.c
32 33 # We build all of libcrypto, which includes a bunch of I/O operations that we
34 # don't actually care about, since we only really want the BoringCrypto module.
35 # In libcrypto, they use the LFS64 interfaces where available in order to
36 # traverse files larger than 2GB. In some scenarios this can cause breakage, so
37 # we comment out the _FILE_OFFSET_BITS definition which enables the LFS64
38 # interfaces. Since this code is outside of the FIPS module, it doesn't affect
39 # the certification status of the module. See b/364606941 for additional context.
40 perl -p -i -e 's/(#define _FILE_OFFSET_BITS 64)/\/\/ $1/' boringssl/crypto/bio/file.c
41 42 # Verbatim instructions from BoringCrypto build docs.
43 printf "set(CMAKE_C_COMPILER \"clang\")\nset(CMAKE_CXX_COMPILER \"clang++\")\n" >${HOME}/toolchain
44 cd boringssl
45 mkdir build && cd build && cmake -GNinja -DCMAKE_TOOLCHAIN_FILE=${HOME}/toolchain -DFIPS=1 -DCMAKE_BUILD_TYPE=Release ..
46 # SSLTest.HostMatching fails due to an expired certificate.
47 ninja && faketime 2022-06-13 ninja run_tests
48 cd ../..
49 50 if [ "$(./boringssl/build/tool/bssl isfips)" != 1 ]; then
51 echo "NOT FIPS"
52 exit 2
53 fi
54