Materialize/misc/bazel/c_deps/BUILD.zlib.bazel

# Copyright Materialize, Inc. and contributors. All rights reserved.
#
# 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 in the LICENSE file at the
# root of this repository, or online 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.

"""
Builds zlib.

Copied from https://github.com/protocolbuffers/protobuf/blob/v3.9.1/third_party/zlib.BUILD
"""

load("@rules_cc//cc:defs.bzl", "cc_library")

_ZLIB_HEADERS = [
    "crc32.h",
    "deflate.h",
    "gzguts.h",
    "inffast.h",
    "inffixed.h",
    "inflate.h",
    "inftrees.h",
    "trees.h",
    "zconf.h",
    "zlib.h",
    "zutil.h",
]

_ZLIB_PREFIXED_HEADERS = ["zlib/include/" + hdr for hdr in _ZLIB_HEADERS]

# In order to limit the damage from the `includes` propagation
# via `:zlib`, copy the public headers to a subdirectory and
# expose those.
genrule(
    name = "copy_public_headers",
    srcs = _ZLIB_HEADERS,
    outs = _ZLIB_PREFIXED_HEADERS,
    cmd = "cp $(SRCS) $(@D)/zlib/include/",
    visibility = ["//visibility:private"],
)

cc_library(
    name = "zlib",
    srcs = [
        "adler32.c",
        "compress.c",
        "crc32.c",
        "deflate.c",
        "gzclose.c",
        "gzlib.c",
        "gzread.c",
        "gzwrite.c",
        "infback.c",
        "inffast.c",
        "inflate.c",
        "inftrees.c",
        "trees.c",
        "uncompr.c",
        "zutil.c",
    ],
    hdrs = _ZLIB_PREFIXED_HEADERS,
    copts = select({
        "//conditions:default": [
            "-Wno-unused-variable",
            "-Wno-implicit-function-declaration",
            "-Wno-deprecated-non-prototype",
        ],
    }),
    includes = ["zlib/include/"],
    visibility = ["//visibility:public"],
)

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#
#    http://www.apache.org/licenses/LICENSE-2.0
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# 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.
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