platform_build_soong/bp2build/cc_library_conversion_test.go

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// Copyright 2021 Google Inc. 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 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.
package bp2build
import (
"android/soong/android"
"android/soong/cc"
"strings"
"testing"
)
const (
// See cc/testing.go for more context
soongCcLibraryPreamble = `
cc_defaults {
name: "linux_bionic_supported",
}
toolchain_library {
name: "libclang_rt.builtins-x86_64-android",
defaults: ["linux_bionic_supported"],
vendor_available: true,
vendor_ramdisk_available: true,
product_available: true,
recovery_available: true,
native_bridge_supported: true,
src: "",
}`
)
func TestCcLibraryBp2Build(t *testing.T) {
testCases := []struct {
description string
moduleTypeUnderTest string
moduleTypeUnderTestFactory android.ModuleFactory
moduleTypeUnderTestBp2BuildMutator func(android.TopDownMutatorContext)
bp string
expectedBazelTargets []string
filesystem map[string]string
dir string
}{
{
description: "cc_library - simple example",
moduleTypeUnderTest: "cc_library",
moduleTypeUnderTestFactory: cc.LibraryFactory,
moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryBp2Build,
filesystem: map[string]string{
"android.cpp": "",
"darwin.cpp": "",
// Refer to cc.headerExts for the supported header extensions in Soong.
"header.h": "",
"header.hh": "",
"header.hpp": "",
"header.hxx": "",
"header.h++": "",
"header.inl": "",
"header.inc": "",
"header.ipp": "",
"header.h.generic": "",
"impl.cpp": "",
"linux.cpp": "",
"x86.cpp": "",
"x86_64.cpp": "",
"foo-dir/a.h": "",
},
bp: soongCcLibraryPreamble + `
cc_library_headers { name: "some-headers" }
cc_library {
name: "foo-lib",
srcs: ["impl.cpp"],
cflags: ["-Wall"],
header_libs: ["some-headers"],
export_include_dirs: ["foo-dir"],
ldflags: ["-Wl,--exclude-libs=bar.a"],
arch: {
x86: {
ldflags: ["-Wl,--exclude-libs=baz.a"],
srcs: ["x86.cpp"],
},
x86_64: {
ldflags: ["-Wl,--exclude-libs=qux.a"],
srcs: ["x86_64.cpp"],
},
},
target: {
android: {
srcs: ["android.cpp"],
},
linux_glibc: {
srcs: ["linux.cpp"],
},
darwin: {
srcs: ["darwin.cpp"],
},
},
}
`,
expectedBazelTargets: []string{`cc_library(
name = "foo-lib",
copts = [
"-Wall",
"-I.",
],
deps = [":some-headers"],
includes = ["foo-dir"],
linkopts = ["-Wl,--exclude-libs=bar.a"] + select({
"//build/bazel/platforms/arch:x86": ["-Wl,--exclude-libs=baz.a"],
"//build/bazel/platforms/arch:x86_64": ["-Wl,--exclude-libs=qux.a"],
"//conditions:default": [],
}),
srcs = ["impl.cpp"] + select({
"//build/bazel/platforms/arch:x86": ["x86.cpp"],
"//build/bazel/platforms/arch:x86_64": ["x86_64.cpp"],
"//conditions:default": [],
}) + select({
"//build/bazel/platforms/os:android": ["android.cpp"],
"//build/bazel/platforms/os:darwin": ["darwin.cpp"],
"//build/bazel/platforms/os:linux": ["linux.cpp"],
"//conditions:default": [],
}),
)`},
},
{
description: "cc_library - trimmed example of //bionic/linker:ld-android",
moduleTypeUnderTest: "cc_library",
moduleTypeUnderTestFactory: cc.LibraryFactory,
moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryBp2Build,
filesystem: map[string]string{
"ld-android.cpp": "",
"linked_list.h": "",
"linker.h": "",
"linker_block_allocator.h": "",
"linker_cfi.h": "",
},
bp: soongCcLibraryPreamble + `
cc_library_headers { name: "libc_headers" }
cc_library {
name: "fake-ld-android",
srcs: ["ld_android.cpp"],
cflags: [
"-Wall",
"-Wextra",
"-Wunused",
"-Werror",
],
header_libs: ["libc_headers"],
ldflags: [
"-Wl,--exclude-libs=libgcc.a",
"-Wl,--exclude-libs=libgcc_stripped.a",
"-Wl,--exclude-libs=libclang_rt.builtins-arm-android.a",
"-Wl,--exclude-libs=libclang_rt.builtins-aarch64-android.a",
"-Wl,--exclude-libs=libclang_rt.builtins-i686-android.a",
"-Wl,--exclude-libs=libclang_rt.builtins-x86_64-android.a",
],
arch: {
x86: {
ldflags: ["-Wl,--exclude-libs=libgcc_eh.a"],
},
x86_64: {
ldflags: ["-Wl,--exclude-libs=libgcc_eh.a"],
},
},
}
`,
expectedBazelTargets: []string{`cc_library(
name = "fake-ld-android",
copts = [
"-Wall",
"-Wextra",
"-Wunused",
"-Werror",
"-I.",
],
deps = [":libc_headers"],
linkopts = [
"-Wl,--exclude-libs=libgcc.a",
"-Wl,--exclude-libs=libgcc_stripped.a",
"-Wl,--exclude-libs=libclang_rt.builtins-arm-android.a",
"-Wl,--exclude-libs=libclang_rt.builtins-aarch64-android.a",
"-Wl,--exclude-libs=libclang_rt.builtins-i686-android.a",
"-Wl,--exclude-libs=libclang_rt.builtins-x86_64-android.a",
] + select({
"//build/bazel/platforms/arch:x86": ["-Wl,--exclude-libs=libgcc_eh.a"],
"//build/bazel/platforms/arch:x86_64": ["-Wl,--exclude-libs=libgcc_eh.a"],
"//conditions:default": [],
}),
srcs = ["ld_android.cpp"],
)`},
},
{
description: "cc_library exclude_srcs - trimmed example of //external/arm-optimized-routines:libarm-optimized-routines-math",
moduleTypeUnderTest: "cc_library",
moduleTypeUnderTestFactory: cc.LibraryFactory,
moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryBp2Build,
dir: "external",
filesystem: map[string]string{
"external/math/cosf.c": "",
"external/math/erf.c": "",
"external/math/erf_data.c": "",
"external/math/erff.c": "",
"external/math/erff_data.c": "",
"external/Android.bp": `
cc_library {
name: "fake-libarm-optimized-routines-math",
exclude_srcs: [
// Provided by:
// bionic/libm/upstream-freebsd/lib/msun/src/s_erf.c
// bionic/libm/upstream-freebsd/lib/msun/src/s_erff.c
"math/erf.c",
"math/erf_data.c",
"math/erff.c",
"math/erff_data.c",
],
srcs: [
"math/*.c",
],
// arch-specific settings
arch: {
arm64: {
cflags: [
"-DHAVE_FAST_FMA=1",
],
},
},
bazel_module: { bp2build_available: true },
}
`,
},
bp: soongCcLibraryPreamble,
expectedBazelTargets: []string{`cc_library(
name = "fake-libarm-optimized-routines-math",
copts = ["-Iexternal"] + select({
"//build/bazel/platforms/arch:arm64": ["-DHAVE_FAST_FMA=1"],
"//conditions:default": [],
}),
srcs = ["math/cosf.c"],
)`},
},
}
dir := "."
for _, testCase := range testCases {
filesystem := make(map[string][]byte)
toParse := []string{
"Android.bp",
}
for f, content := range testCase.filesystem {
if strings.HasSuffix(f, "Android.bp") {
toParse = append(toParse, f)
}
filesystem[f] = []byte(content)
}
config := android.TestConfig(buildDir, nil, testCase.bp, filesystem)
ctx := android.NewTestContext(config)
cc.RegisterCCBuildComponents(ctx)
ctx.RegisterModuleType("toolchain_library", cc.ToolchainLibraryFactory)
ctx.RegisterModuleType("cc_library_headers", cc.LibraryHeaderFactory)
ctx.RegisterModuleType(testCase.moduleTypeUnderTest, testCase.moduleTypeUnderTestFactory)
ctx.RegisterBp2BuildMutator(testCase.moduleTypeUnderTest, testCase.moduleTypeUnderTestBp2BuildMutator)
ctx.RegisterBp2BuildConfig(bp2buildConfig) // TODO(jingwen): make this the default for all tests
ctx.RegisterForBazelConversion()
_, errs := ctx.ParseFileList(dir, toParse)
if Errored(t, testCase.description, errs) {
continue
}
_, errs = ctx.ResolveDependencies(config)
if Errored(t, testCase.description, errs) {
continue
}
checkDir := dir
if testCase.dir != "" {
checkDir = testCase.dir
}
codegenCtx := NewCodegenContext(config, *ctx.Context, Bp2Build)
bazelTargets := generateBazelTargetsForDir(codegenCtx, checkDir)
if actualCount, expectedCount := len(bazelTargets), len(testCase.expectedBazelTargets); actualCount != expectedCount {
t.Errorf("%s: Expected %d bazel target, got %d", testCase.description, expectedCount, actualCount)
} else {
for i, target := range bazelTargets {
if w, g := testCase.expectedBazelTargets[i], target.content; w != g {
t.Errorf(
"%s: Expected generated Bazel target to be '%s', got '%s'",
testCase.description,
w,
g,
)
}
}
}
}
}