109 lines
2.9 KiB
Text
109 lines
2.9 KiB
Text
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# This file is licensed under the Apache License v2.0 with LLVM Exceptions.
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# See https://llvm.org/LICENSE.txt for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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load("@bazel_skylib//rules:common_settings.bzl", "bool_flag")
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load("@bazel_skylib//rules:expand_template.bzl", "expand_template")
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package(
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default_visibility = ["//visibility:public"],
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# BSD/MIT-like license (for zlib)
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licenses = ["notice"],
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)
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bool_flag(
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name = "llvm_enable_zlib",
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build_setting_default = True,
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)
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config_setting(
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name = "llvm_zlib_enabled",
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flag_values = {":llvm_enable_zlib": "true"},
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)
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genrule(
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# The input template is identical to the CMake output.
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name = "zconf_gen",
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srcs = ["zconf.h.in"],
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outs = ["zconf.h"],
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cmd = "cp $(SRCS) $(OUTS)",
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)
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cc_library(
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name = "zlib",
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srcs = select({
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":llvm_zlib_enabled": [
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"adler32_p.h",
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"chunkset_tpl.h",
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"crc32_p.h",
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"crc32_tbl.h",
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"crc32_comb_tbl.h",
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"deflate.h",
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"deflate_p.h",
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"functable.h",
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"fallback_builtins.h",
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"inffast.h",
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"inffixed_tbl.h",
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"inflate.h",
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"inflate_p.h",
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"inftrees.h",
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"insert_string_tpl.h",
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"match_tpl.h",
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"trees.h",
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"trees_emit.h",
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"trees_tbl.h",
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"zbuild.h",
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"zendian.h",
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"zutil.h",
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"adler32.c",
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"chunkset.c",
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"compare258.c",
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"compress.c",
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"crc32.c",
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"crc32_comb.c",
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"deflate.c",
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"deflate_fast.c",
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"deflate_medium.c",
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"deflate_quick.c",
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"deflate_slow.c",
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"functable.c",
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"infback.c",
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"inffast.c",
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"inflate.c",
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"inftrees.c",
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"insert_string.c",
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"trees.c",
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"uncompr.c",
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"zutil_p.h",
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"zutil.c",
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],
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"//conditions:default": [],
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}),
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hdrs = select({
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":llvm_zlib_enabled": [
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"zlib.h",
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":zconf_gen",
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],
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"//conditions:default": [],
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}),
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copts = [
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"-std=c11",
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"-DZLIB_COMPAT",
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"-DWITH_GZFILEOP",
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"-DWITH_OPTIM",
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"-DWITH_NEW_STRATEGIES",
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# For local builds you might want to add "-DWITH_NATIVE_INSTRUCTIONS"
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# here to improve performance. Native instructions aren't enabled in
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# the default config for reproducibility.
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],
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defines = select({
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":llvm_zlib_enabled": [
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"LLVM_ENABLE_ZLIB=1",
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],
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"//conditions:default": [],
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}),
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# Clang includes zlib with angled instead of quoted includes, so we need
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# strip_include_prefix here.
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strip_include_prefix = ".",
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visibility = ["//visibility:public"],
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)
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