third_party/re2/BUILD.gn

# Copyright 2021 The Fuchsia Authors.  All Rights Reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.

import("//build/components/fuchsia_unittest_package.gni")

config("re2_config") {
  include_dirs = [ "src" ]
}

config("re2_skipped_warnings") {
  visibility = [ ":*" ]
  cflags = [
    "-Wno-conversion",
    "-Wno-extra-semi",
    "-Wno-missing-field-initializers",
    "-Wno-tautological-unsigned-enum-zero-compare",
    "-Wno-tautological-unsigned-zero-compare",
    "-Wno-unused",
    "-Wno-unused-parameter",
  ]
}

# Tests depend on this target instead of ":re2" because the .so exports a
# limited set of symbols and tests need access to the full symbol list.
source_set("re2_source") {
  visibility = [ ":*" ]
  sources = [
    "src/re2/bitmap256.h",
    "src/re2/bitstate.cc",
    "src/re2/compile.cc",
    "src/re2/dfa.cc",
    "src/re2/filtered_re2.cc",
    "src/re2/filtered_re2.h",
    "src/re2/mimics_pcre.cc",
    "src/re2/nfa.cc",
    "src/re2/onepass.cc",
    "src/re2/parse.cc",
    "src/re2/perl_groups.cc",
    "src/re2/prefilter.cc",
    "src/re2/prefilter.h",
    "src/re2/prefilter_tree.cc",
    "src/re2/prefilter_tree.h",
    "src/re2/prog.cc",
    "src/re2/prog.h",
    "src/re2/re2.cc",
    "src/re2/re2.h",
    "src/re2/regexp.cc",
    "src/re2/regexp.h",
    "src/re2/set.cc",
    "src/re2/set.h",
    "src/re2/simplify.cc",
    "src/re2/sparse_array.h",
    "src/re2/sparse_set.h",
    "src/re2/stringpiece.cc",
    "src/re2/stringpiece.h",
    "src/re2/tostring.cc",
    "src/re2/unicode_casefold.cc",
    "src/re2/unicode_casefold.h",
    "src/re2/unicode_groups.cc",
    "src/re2/unicode_groups.h",
    "src/re2/walker-inl.h",
    "src/util/flags.h",
    "src/util/logging.h",
    "src/util/mutex.h",
    "src/util/rune.cc",
    "src/util/strutil.cc",
    "src/util/utf.h",
    "src/util/util.h",
  ]
  public = [ "src/re2/re2.h" ]
  public_configs = [ ":re2_config" ]
  configs += [ ":re2_skipped_warnings" ]

  # Ensure the symbols are not hidden else the .so won't have any exported
  # symbols. When we build the .so (below) we supply a linker script which
  # limits the set of public symbols.
  configs -= [ "//build/config:symbol_visibility_hidden" ]
}

# Building as a shared library to reduce space usage in production images.
# See space analysis in fxrev.dev/532721.
target(default_library_type, "re2") {
  deps = [ ":re2_source" ]
  public = [ "src/re2/re2.h" ]
  public_configs = [ ":re2_config" ]
  configs += [ ":re2_skipped_warnings" ]
  configs -= [ "//build/config:symbol_visibility_hidden" ]

  if (default_library_type == "shared_library") {
    if (is_mac) {
      version_script = "src/libre2.symbols.darwin"
    } else {
      version_script = "src/libre2.symbols"
    }
    inputs = [ version_script ]
    if (is_mac) {
      ldflags = [ "-Wl,-exported_symbols_list=" +
                  rebase_path(version_script, root_build_dir) ]
    } else {
      ldflags = [ "-Wl,--version-script=" +
                  rebase_path(version_script, root_build_dir) ]
    }
  }
}

source_set("testing") {
  testonly = true
  visibility = [ ":*" ]
  sources = [
    "src/re2/testing/backtrack.cc",
    "src/re2/testing/dump.cc",
    "src/re2/testing/exhaustive_tester.cc",
    "src/re2/testing/exhaustive_tester.h",
    "src/re2/testing/null_walker.cc",
    "src/re2/testing/regexp_generator.cc",
    "src/re2/testing/regexp_generator.h",
    "src/re2/testing/string_generator.cc",
    "src/re2/testing/string_generator.h",
    "src/re2/testing/tester.cc",
    "src/re2/testing/tester.h",
    "src/util/benchmark.h",
    "src/util/pcre.cc",
    "src/util/pcre.h",
    "src/util/test.h",
  ]
  public_deps = [ ":re2_source" ]
  configs += [ ":re2_skipped_warnings" ]
}

executable("re2_fast_tests_bin") {
  testonly = true
  sources = [
    "src/re2/testing/charclass_test.cc",
    "src/re2/testing/compile_test.cc",
    "src/re2/testing/filtered_re2_test.cc",
    "src/re2/testing/mimics_pcre_test.cc",
    "src/re2/testing/parse_test.cc",
    "src/re2/testing/possible_match_test.cc",
    "src/re2/testing/re2_arg_test.cc",
    "src/re2/testing/re2_test.cc",
    "src/re2/testing/regexp_test.cc",
    "src/re2/testing/required_prefix_test.cc",
    "src/re2/testing/search_test.cc",
    "src/re2/testing/set_test.cc",
    "src/re2/testing/simplify_test.cc",
    "src/re2/testing/string_generator_test.cc",
    "src/util/test.cc",
  ]
  deps = [ ":testing" ]
  configs += [ ":re2_skipped_warnings" ]
}

executable("re2_slow_tests_bin") {
  testonly = true
  sources = [
    "src/re2/testing/dfa_test.cc",
    "src/re2/testing/exhaustive1_test.cc",
    "src/re2/testing/exhaustive2_test.cc",
    "src/re2/testing/exhaustive3_test.cc",
    "src/re2/testing/exhaustive_test.cc",
    "src/re2/testing/random_test.cc",
    "src/util/test.cc",
  ]
  deps = [ ":testing" ]
  configs += [ ":re2_skipped_warnings" ]
}

executable("re2_benchmarks") {
  testonly = true
  sources = [
    "src/re2/testing/regexp_benchmark.cc",
    "src/util/benchmark.cc",
  ]
  deps = [ ":re2_source" ]
  public_deps = [ ":testing" ]
  configs += [ ":re2_skipped_warnings" ]
}

fuchsia_unittest_package("re2_fast_tests") {
  deps = [
    ":re2_fast_tests_bin",
    "//src/sys/testing/elftest",
  ]
}

fuchsia_unittest_package("re2_slow_tests") {
  deps = [
    ":re2_slow_tests_bin",
    "//src/sys/testing/elftest",
  ]
}

group("tests") {
  testonly = true
  deps = [
    ":re2_fast_tests",

    # Ensure these build, but don't run them by default: benchmarks don't have
    # a pass/fail status and the slow tests take hours to run.
    ":re2_benchmarks",
    ":re2_slow_tests_bin",
  ]
}