# Copyright (c) 2016, Google Inc.
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
# OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */

load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_library")
load(
    ":BUILD.generated.bzl",
    "crypto_headers",
    "crypto_internal_headers",
    "crypto_sources",
    "crypto_sources_linux_aarch64",
    "crypto_sources_linux_ppc64le",
    "crypto_sources_linux_x86_64",
    "crypto_sources_mac_x86_64",
    "fips_fragments",
    "ssl_headers",
    "ssl_internal_headers",
    "ssl_sources",
    "tool_headers",
    "tool_sources",
)

licenses(["notice"])

exports_files(["LICENSE"])

config_setting(
    name = "linux_aarch64",
    values = {"cpu": "aarch64"},
)

config_setting(
    name = "linux_x86_64",
    values = {"cpu": "k8"},
)

config_setting(
    name = "linux_ppc64le",
    values = {"cpu": "ppc"},
)

config_setting(
    name = "mac_x86_64",
    values = {"cpu": "darwin"},
)

config_setting(
    name = "windows_x86_64",
    values = {"cpu": "x64_windows"},
)

config_setting(
    name = "android_legacy",
    values = {"crosstool_top": "//external:android/crosstool"},
)

config_setting(
    name = "android_stlport",
    values = {"crosstool_top": "@androidndk//:toolchain-stlport"},
)

config_setting(
    name = "android_libcpp",
    values = {"crosstool_top": "@androidndk//:toolchain-libcpp"},
)

config_setting(
    name = "android_gnu_libstdcpp",
    values = {"crosstool_top": "@androidndk//:toolchain-gnu-libstdcpp"},
)

config_setting(
    name = "android_default",
    values = {"crosstool_top": "@androidndk//:default_crosstool"},
)

posix_copts = [
    # Assembler option --noexecstack adds .note.GNU-stack to each object to
    # ensure that binaries can be built with non-executable stack.
    "-Wa,--noexecstack",

    # This list of warnings should match those in the top-level CMakeLists.txt.
    "-Wall",
    "-Werror",
    "-Wformat=2",
    "-Wsign-compare",
    "-Wmissing-field-initializers",
    "-Wwrite-strings",
    "-Wshadow",
    "-fno-common",

    # Modern build environments should be able to set this to use atomic
    # operations for reference counting rather than locks. However, it's
    # known not to work on some Android builds.
    # "-DOPENSSL_C11_ATOMIC",
]

linux_copts = posix_copts + [
    # This is needed on Linux systems (at least) to get rwlock in pthread, but
    # it should not be set on Apple platforms, where it instead disables APIs
    # we use. See compat(5) and sys/cdefs.h.
    "-D_XOPEN_SOURCE=700",
]

boringssl_copts = select({
    ":linux_aarch64": linux_copts,
    ":linux_ppc64le": linux_copts,
    ":linux_x86_64": linux_copts,
    ":mac_x86_64": posix_copts,
    ":windows_x86_64": [
        "-DWIN32_LEAN_AND_MEAN",
        "-DOPENSSL_NO_ASM",
    ],
    "//conditions:default": ["-DOPENSSL_NO_ASM"],
})

crypto_sources_asm = select({
    ":linux_aarch64": crypto_sources_linux_aarch64,
    ":linux_ppc64le": crypto_sources_linux_ppc64le,
    ":linux_x86_64": crypto_sources_linux_x86_64,
    ":mac_x86_64": crypto_sources_mac_x86_64,
    "//conditions:default": [],
})

# For C targets only (not C++), compile with C11 support.
posix_copts_c11 = [
    "-std=c11",
    "-Wmissing-prototypes",
    "-Wold-style-definition",
    "-Wstrict-prototypes",
]

boringssl_copts_c11 = boringssl_copts + select({
    ":linux_aarch64": posix_copts_c11,
    ":linux_ppc64le": posix_copts_c11,
    ":linux_x86_64": posix_copts_c11,
    ":mac_x86_64": posix_copts_c11,
    "//conditions:default": [],
})

# For C++ targets only (not C), compile with C++11 support.
posix_copts_cxx = [
    "-std=c++11",
    "-Wmissing-declarations",
]

boringssl_copts_cxx = boringssl_copts + select({
    ":linux_aarch64": posix_copts_cxx,
    ":linux_ppc64le": posix_copts_cxx,
    ":linux_x86_64": posix_copts_cxx,
    ":mac_x86_64": posix_copts_cxx,
    "//conditions:default": [],
})

cc_library(
    name = "crypto",
    srcs = crypto_sources + crypto_internal_headers + crypto_sources_asm,
    hdrs = crypto_headers + fips_fragments,
    copts = boringssl_copts_c11,
    includes = ["src/include"],
    linkopts = select({
        # Android supports pthreads, but does not provide a libpthread
        # to link against.
        ":android_legacy": [],
        ":android_stlport": [],
        ":android_libcpp": [],
        ":android_gnu_libstdcpp": [],
        ":android_default": [],
        ":mac_x86_64": [],
        ":windows_x86_64": ["-defaultlib:advapi32.lib"],
        "//conditions:default": ["-lpthread"],
    }),
    visibility = ["//visibility:public"],
)

cc_library(
    name = "ssl",
    srcs = ssl_sources + ssl_internal_headers,
    hdrs = ssl_headers,
    copts = boringssl_copts_cxx,
    includes = ["src/include"],
    visibility = ["//visibility:public"],
    deps = [
        ":crypto",
    ],
)

cc_binary(
    name = "bssl",
    srcs = tool_sources + tool_headers,
    copts = boringssl_copts_cxx,
    visibility = ["//visibility:public"],
    deps = [":ssl"],
)