Merge "Add os/target configurable selects for label list attributes."
diff --git a/android/arch.go b/android/arch.go
index 20b4ab0..3eff5d5 100644
--- a/android/arch.go
+++ b/android/arch.go
@@ -1709,3 +1709,90 @@
}
return archToProp
}
+
+// GetTargetProperties returns a map of OS target (e.g. android, windows) to the
+// values of the properties of the 'dst' struct that are specific to that OS
+// target.
+//
+// For example, passing a struct { Foo bool, Bar string } will return an
+// interface{} that can be type asserted back into the same struct, containing
+// the os-specific property value specified by the module if defined.
+//
+// While this looks similar to GetArchProperties, the internal representation of
+// the properties have a slightly different layout to warrant a standalone
+// lookup function.
+func (m *ModuleBase) GetTargetProperties(dst interface{}) map[OsType]interface{} {
+ // Return value of the arch types to the prop values for that arch.
+ osToProp := map[OsType]interface{}{}
+
+ // Nothing to do for non-OS/arch-specific modules.
+ if !m.ArchSpecific() {
+ return osToProp
+ }
+
+ // archProperties has the type of [][]interface{}. Looks complicated, so
+ // let's explain this step by step.
+ //
+ // Loop over the outer index, which determines the property struct that
+ // contains a matching set of properties in dst that we're interested in.
+ // For example, BaseCompilerProperties or BaseLinkerProperties.
+ for i := range m.archProperties {
+ if m.archProperties[i] == nil {
+ continue
+ }
+
+ // Iterate over the supported OS types
+ for _, os := range OsTypeList {
+ // e.g android, linux_bionic
+ field := os.Field
+
+ // If it's not nil, loop over the inner index, which determines the arch variant
+ // of the prop type. In an Android.bp file, this is like looping over:
+ //
+ // target: { android: { key: value, ... }, linux_bionic: { key: value, ... } }
+ for _, archProperties := range m.archProperties[i] {
+ archPropValues := reflect.ValueOf(archProperties).Elem()
+
+ // This is the archPropRoot struct. Traverse into the Targetnested struct.
+ src := archPropValues.FieldByName("Target").Elem()
+
+ // Step into non-nil pointers to structs in the src value.
+ if src.Kind() == reflect.Ptr {
+ if src.IsNil() {
+ continue
+ }
+ src = src.Elem()
+ }
+
+ // Find the requested field (e.g. android, linux_bionic) in the src struct.
+ src = src.FieldByName(field)
+
+ // Validation steps. We want valid non-nil pointers to structs.
+ if !src.IsValid() || src.IsNil() {
+ continue
+ }
+
+ if src.Kind() != reflect.Ptr || src.Elem().Kind() != reflect.Struct {
+ continue
+ }
+
+ // Clone the destination prop, since we want a unique prop struct per arch.
+ dstClone := reflect.New(reflect.ValueOf(dst).Elem().Type()).Interface()
+
+ // Copy the located property struct into the cloned destination property struct.
+ err := proptools.ExtendMatchingProperties([]interface{}{dstClone}, src.Interface(), nil, proptools.OrderReplace)
+ if err != nil {
+ // This is fine, it just means the src struct doesn't match.
+ continue
+ }
+
+ // Found the prop for the os, you have.
+ osToProp[os] = dstClone
+
+ // Go to the next prop.
+ break
+ }
+ }
+ }
+ return osToProp
+}
diff --git a/android/bazel.go b/android/bazel.go
index 51ff3cb..2587328 100644
--- a/android/bazel.go
+++ b/android/bazel.go
@@ -108,6 +108,11 @@
type BazelConversionConfigEntry int
const (
+ // A sentinel value to be used as a key in Bp2BuildConfig for modules with
+ // no package path. This is also the module dir for top level Android.bp
+ // modules.
+ BP2BUILD_TOPLEVEL = "."
+
// iota + 1 ensures that the int value is not 0 when used in the Bp2buildAllowlist map,
// which can also mean that the key doesn't exist in a lookup.
@@ -224,10 +229,15 @@
func bp2buildDefaultTrueRecursively(packagePath string, config Bp2BuildConfig) bool {
ret := false
+ // Return exact matches in the config.
+ if config[packagePath] == Bp2BuildDefaultTrueRecursively {
+ return true
+ }
if config[packagePath] == Bp2BuildDefaultFalse {
return false
}
+ // If not, check for the config recursively.
packagePrefix := ""
// e.g. for x/y/z, iterate over x, x/y, then x/y/z, taking the final value from the allowlist.
for _, part := range strings.Split(packagePath, "/") {
diff --git a/android/bazel_handler.go b/android/bazel_handler.go
index ba5231f..04b70d6 100644
--- a/android/bazel_handler.go
+++ b/android/bazel_handler.go
@@ -270,13 +270,23 @@
cmdFlags = append(cmdFlags, labels...)
cmdFlags = append(cmdFlags, "--package_path=%workspace%/"+context.intermediatesDir())
cmdFlags = append(cmdFlags, "--profile="+shared.BazelMetricsFilename(context, runName))
- // Set default platforms to canonicalized values for mixed builds requests. If these are set
- // in the bazelrc, they will have values that are non-canonicalized, and thus be invalid.
- // The actual platform values here may be overridden by configuration transitions from the buildroot.
+
+ // Set default platforms to canonicalized values for mixed builds requests.
+ // If these are set in the bazelrc, they will have values that are
+ // non-canonicalized to @sourceroot labels, and thus be invalid when
+ // referenced from the buildroot.
+ //
+ // The actual platform values here may be overridden by configuration
+ // transitions from the buildroot.
cmdFlags = append(cmdFlags,
- fmt.Sprintf("--platforms=%s", canonicalizeLabel("//build/bazel/platforms:generic_x86_64")))
+ fmt.Sprintf("--platforms=%s", canonicalizeLabel("//build/bazel/platforms:android_x86_64")))
cmdFlags = append(cmdFlags,
fmt.Sprintf("--extra_toolchains=%s", canonicalizeLabel("//prebuilts/clang/host/linux-x86:all")))
+ // This should be parameterized on the host OS, but let's restrict to linux
+ // to keep things simple for now.
+ cmdFlags = append(cmdFlags,
+ fmt.Sprintf("--host_platform=%s", canonicalizeLabel("//build/bazel/platforms:linux_x86_64")))
+
// Explicitly disable downloading rules (such as canonical C++ and Java rules) from the network.
cmdFlags = append(cmdFlags, "--experimental_repository_disable_download")
cmdFlags = append(cmdFlags, extraFlags...)
@@ -328,7 +338,7 @@
def _config_node_transition_impl(settings, attr):
return {
- "//command_line_option:platforms": "@sourceroot//build/bazel/platforms:generic_%s" % attr.arch,
+ "//command_line_option:platforms": "@sourceroot//build/bazel/platforms:android_%s" % attr.arch,
}
_config_node_transition = transition(
@@ -504,10 +514,10 @@
platform_name = build_options(target)["//command_line_option:platforms"][0].name
if platform_name == "host":
return "HOST"
- elif not platform_name.startswith("generic_"):
- fail("expected platform name of the form 'generic_<arch>', but was " + str(platforms))
+ elif not platform_name.startswith("android_"):
+ fail("expected platform name of the form 'android_<arch>', but was " + str(platforms))
return "UNKNOWN"
- return platform_name[len("generic_"):]
+ return platform_name[len("android_"):]
def format(target):
id_string = str(target.label) + "|" + get_arch(target)
diff --git a/bazel/properties.go b/bazel/properties.go
index 1763f2d..250fea4 100644
--- a/bazel/properties.go
+++ b/bazel/properties.go
@@ -80,10 +80,19 @@
}
const (
- ARCH_X86 = "x86"
- ARCH_X86_64 = "x86_64"
+ // ArchType names in arch.go
ARCH_ARM = "arm"
ARCH_ARM64 = "arm64"
+ ARCH_X86 = "x86"
+ ARCH_X86_64 = "x86_64"
+
+ // OsType names in arch.go
+ OS_ANDROID = "android"
+ OS_DARWIN = "darwin"
+ OS_FUCHSIA = "fuchsia"
+ OS_LINUX = "linux_glibc"
+ OS_LINUX_BIONIC = "linux_bionic"
+ OS_WINDOWS = "windows"
)
var (
@@ -92,6 +101,36 @@
// android package depends on the bazel package, so a cyclic dependency
// prevents using that here.
selectableArchs = []string{ARCH_X86, ARCH_X86_64, ARCH_ARM, ARCH_ARM64}
+
+ // Likewise, this is the list of target operating systems.
+ selectableTargetOs = []string{
+ OS_ANDROID,
+ OS_DARWIN,
+ OS_FUCHSIA,
+ OS_LINUX,
+ OS_LINUX_BIONIC,
+ OS_WINDOWS,
+ }
+
+ // A map of architectures to the Bazel label of the constraint_value
+ // for the @platforms//cpu:cpu constraint_setting
+ PlatformArchMap = map[string]string{
+ ARCH_ARM: "//build/bazel/platforms/arch:arm",
+ ARCH_ARM64: "//build/bazel/platforms/arch:arm64",
+ ARCH_X86: "//build/bazel/platforms/arch:x86",
+ ARCH_X86_64: "//build/bazel/platforms/arch:x86_64",
+ }
+
+ // A map of target operating systems to the Bazel label of the
+ // constraint_value for the @platforms//os:os constraint_setting
+ PlatformOsMap = map[string]string{
+ OS_ANDROID: "//build/bazel/platforms/os:android",
+ OS_DARWIN: "//build/bazel/platforms/os:darwin",
+ OS_FUCHSIA: "//build/bazel/platforms/os:fuchsia",
+ OS_LINUX: "//build/bazel/platforms/os:linux",
+ OS_LINUX_BIONIC: "//build/bazel/platforms/os:linux_bionic",
+ OS_WINDOWS: "//build/bazel/platforms/os:windows",
+ }
)
// Arch-specific label_list typed Bazel attribute values. This should correspond
@@ -101,8 +140,16 @@
X86_64 LabelList
Arm LabelList
Arm64 LabelList
- // TODO(b/181299724): this is currently missing the "common" arch, which
- // doesn't have an equivalent platform() definition yet.
+ Common LabelList
+}
+
+type labelListOsValues struct {
+ Android LabelList
+ Darwin LabelList
+ Fuchsia LabelList
+ Linux LabelList
+ LinuxBionic LabelList
+ Windows LabelList
}
// LabelListAttribute is used to represent a list of Bazel labels as an
@@ -115,6 +162,11 @@
// are generated in a select statement and appended to the non-arch specific
// label list Value.
ArchValues labelListArchValues
+
+ // The os-specific attribute label list values. Optional. If used, these
+ // are generated in a select statement and appended to the non-os specific
+ // label list Value.
+ OsValues labelListOsValues
}
// MakeLabelListAttribute initializes a LabelListAttribute with the non-arch specific value.
@@ -124,45 +176,75 @@
// HasArchSpecificValues returns true if the attribute contains
// architecture-specific label_list values.
-func (attrs *LabelListAttribute) HasArchSpecificValues() bool {
+func (attrs *LabelListAttribute) HasConfigurableValues() bool {
for _, arch := range selectableArchs {
- if len(attrs.GetValueForArch(arch).Includes) > 0 || len(attrs.GetValueForArch(arch).Excludes) > 0 {
+ if len(attrs.GetValueForArch(arch).Includes) > 0 {
+ return true
+ }
+ }
+
+ for _, os := range selectableTargetOs {
+ if len(attrs.GetValueForOS(os).Includes) > 0 {
return true
}
}
return false
}
+func (attrs *LabelListAttribute) archValuePtrs() map[string]*LabelList {
+ return map[string]*LabelList{
+ ARCH_X86: &attrs.ArchValues.X86,
+ ARCH_X86_64: &attrs.ArchValues.X86_64,
+ ARCH_ARM: &attrs.ArchValues.Arm,
+ ARCH_ARM64: &attrs.ArchValues.Arm64,
+ }
+}
+
// GetValueForArch returns the label_list attribute value for an architecture.
func (attrs *LabelListAttribute) GetValueForArch(arch string) LabelList {
- switch arch {
- case ARCH_X86:
- return attrs.ArchValues.X86
- case ARCH_X86_64:
- return attrs.ArchValues.X86_64
- case ARCH_ARM:
- return attrs.ArchValues.Arm
- case ARCH_ARM64:
- return attrs.ArchValues.Arm64
- default:
+ var v *LabelList
+ if v = attrs.archValuePtrs()[arch]; v == nil {
panic(fmt.Errorf("Unknown arch: %s", arch))
}
+ return *v
}
// SetValueForArch sets the label_list attribute value for an architecture.
func (attrs *LabelListAttribute) SetValueForArch(arch string, value LabelList) {
- switch arch {
- case "x86":
- attrs.ArchValues.X86 = value
- case "x86_64":
- attrs.ArchValues.X86_64 = value
- case "arm":
- attrs.ArchValues.Arm = value
- case "arm64":
- attrs.ArchValues.Arm64 = value
- default:
+ var v *LabelList
+ if v = attrs.archValuePtrs()[arch]; v == nil {
panic(fmt.Errorf("Unknown arch: %s", arch))
}
+ *v = value
+}
+
+func (attrs *LabelListAttribute) osValuePtrs() map[string]*LabelList {
+ return map[string]*LabelList{
+ OS_ANDROID: &attrs.OsValues.Android,
+ OS_DARWIN: &attrs.OsValues.Darwin,
+ OS_FUCHSIA: &attrs.OsValues.Fuchsia,
+ OS_LINUX: &attrs.OsValues.Linux,
+ OS_LINUX_BIONIC: &attrs.OsValues.LinuxBionic,
+ OS_WINDOWS: &attrs.OsValues.Windows,
+ }
+}
+
+// GetValueForOS returns the label_list attribute value for an OS target.
+func (attrs *LabelListAttribute) GetValueForOS(os string) LabelList {
+ var v *LabelList
+ if v = attrs.osValuePtrs()[os]; v == nil {
+ panic(fmt.Errorf("Unknown os: %s", os))
+ }
+ return *v
+}
+
+// SetValueForArch sets the label_list attribute value for an OS target.
+func (attrs *LabelListAttribute) SetValueForOS(os string, value LabelList) {
+ var v *LabelList
+ if v = attrs.osValuePtrs()[os]; v == nil {
+ panic(fmt.Errorf("Unknown os: %s", os))
+ }
+ *v = value
}
// StringListAttribute corresponds to the string_list Bazel attribute type with
@@ -182,13 +264,12 @@
X86_64 []string
Arm []string
Arm64 []string
- // TODO(b/181299724): this is currently missing the "common" arch, which
- // doesn't have an equivalent platform() definition yet.
+ Common []string
}
-// HasArchSpecificValues returns true if the attribute contains
+// HasConfigurableValues returns true if the attribute contains
// architecture-specific string_list values.
-func (attrs *StringListAttribute) HasArchSpecificValues() bool {
+func (attrs *StringListAttribute) HasConfigurableValues() bool {
for _, arch := range selectableArchs {
if len(attrs.GetValueForArch(arch)) > 0 {
return true
@@ -197,36 +278,31 @@
return false
}
+func (attrs *StringListAttribute) archValuePtrs() map[string]*[]string {
+ return map[string]*[]string{
+ ARCH_X86: &attrs.ArchValues.X86,
+ ARCH_X86_64: &attrs.ArchValues.X86_64,
+ ARCH_ARM: &attrs.ArchValues.Arm,
+ ARCH_ARM64: &attrs.ArchValues.Arm64,
+ }
+}
+
// GetValueForArch returns the string_list attribute value for an architecture.
func (attrs *StringListAttribute) GetValueForArch(arch string) []string {
- switch arch {
- case ARCH_X86:
- return attrs.ArchValues.X86
- case ARCH_X86_64:
- return attrs.ArchValues.X86_64
- case ARCH_ARM:
- return attrs.ArchValues.Arm
- case ARCH_ARM64:
- return attrs.ArchValues.Arm64
- default:
+ var v *[]string
+ if v = attrs.archValuePtrs()[arch]; v == nil {
panic(fmt.Errorf("Unknown arch: %s", arch))
}
+ return *v
}
// SetValueForArch sets the string_list attribute value for an architecture.
func (attrs *StringListAttribute) SetValueForArch(arch string, value []string) {
- switch arch {
- case ARCH_X86:
- attrs.ArchValues.X86 = value
- case ARCH_X86_64:
- attrs.ArchValues.X86_64 = value
- case ARCH_ARM:
- attrs.ArchValues.Arm = value
- case ARCH_ARM64:
- attrs.ArchValues.Arm64 = value
- default:
+ var v *[]string
+ if v = attrs.archValuePtrs()[arch]; v == nil {
panic(fmt.Errorf("Unknown arch: %s", arch))
}
+ *v = value
}
// TryVariableSubstitution, replace string substitution formatting within each string in slice with
diff --git a/bp2build/build_conversion.go b/bp2build/build_conversion.go
index e93b3dc..1d254c8 100644
--- a/bp2build/build_conversion.go
+++ b/bp2build/build_conversion.go
@@ -416,63 +416,11 @@
// Special cases where the bp2build sends additional information to the codegenerator
// by wrapping the attributes in a custom struct type.
if labels, ok := propertyValue.Interface().(bazel.LabelListAttribute); ok {
- // TODO(b/165114590): convert glob syntax
- ret, err := prettyPrint(reflect.ValueOf(labels.Value.Includes), indent)
- if err != nil {
- return ret, err
- }
-
- if !labels.HasArchSpecificValues() {
- // Select statement not needed.
- return ret, nil
- }
-
- ret += " + " + "select({\n"
- for _, arch := range android.ArchTypeList() {
- value := labels.GetValueForArch(arch.Name)
- if len(value.Includes) > 0 {
- ret += makeIndent(indent + 1)
- list, _ := prettyPrint(reflect.ValueOf(value.Includes), indent+1)
- ret += fmt.Sprintf("\"%s\": %s,\n", platformArchMap[arch], list)
- }
- }
-
- ret += makeIndent(indent + 1)
- ret += fmt.Sprintf("\"%s\": [],\n", "//conditions:default")
-
- ret += makeIndent(indent)
- ret += "})"
- return ret, err
+ return prettyPrintLabelListAttribute(labels, indent)
} else if label, ok := propertyValue.Interface().(bazel.Label); ok {
return fmt.Sprintf("%q", label.Label), nil
} else if stringList, ok := propertyValue.Interface().(bazel.StringListAttribute); ok {
- // A Bazel string_list attribute that may contain a select statement.
- ret, err := prettyPrint(reflect.ValueOf(stringList.Value), indent)
- if err != nil {
- return ret, err
- }
-
- if !stringList.HasArchSpecificValues() {
- // Select statement not needed.
- return ret, nil
- }
-
- ret += " + " + "select({\n"
- for _, arch := range android.ArchTypeList() {
- value := stringList.GetValueForArch(arch.Name)
- if len(value) > 0 {
- ret += makeIndent(indent + 1)
- list, _ := prettyPrint(reflect.ValueOf(value), indent+1)
- ret += fmt.Sprintf("\"%s\": %s,\n", platformArchMap[arch], list)
- }
- }
-
- ret += makeIndent(indent + 1)
- ret += fmt.Sprintf("\"%s\": [],\n", "//conditions:default")
-
- ret += makeIndent(indent)
- ret += "})"
- return ret, err
+ return prettyPrintStringListAttribute(stringList, indent)
}
ret = "{\n"
diff --git a/bp2build/cc_library_headers_conversion_test.go b/bp2build/cc_library_headers_conversion_test.go
index 049f84a..d828168 100644
--- a/bp2build/cc_library_headers_conversion_test.go
+++ b/bp2build/cc_library_headers_conversion_test.go
@@ -110,13 +110,11 @@
cc_library_headers {
name: "lib-1",
export_include_dirs: ["lib-1"],
- bazel_module: { bp2build_available: true },
}
cc_library_headers {
name: "lib-2",
export_include_dirs: ["lib-2"],
- bazel_module: { bp2build_available: true },
}
cc_library_headers {
@@ -125,7 +123,6 @@
header_libs: ["lib-1", "lib-2"],
// TODO: Also support export_header_lib_headers
- bazel_module: { bp2build_available: true },
}`,
expectedBazelTargets: []string{`cc_library_headers(
name = "foo_headers",
@@ -163,6 +160,106 @@
],
)`},
},
+ {
+ description: "cc_library_headers test with os-specific header_libs props",
+ moduleTypeUnderTest: "cc_library_headers",
+ moduleTypeUnderTestFactory: cc.LibraryHeaderFactory,
+ moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryHeadersBp2Build,
+ depsMutators: []android.RegisterMutatorFunc{cc.RegisterDepsBp2Build},
+ filesystem: map[string]string{},
+ bp: soongCcLibraryPreamble + `
+cc_library_headers { name: "android-lib" }
+cc_library_headers { name: "base-lib" }
+cc_library_headers { name: "darwin-lib" }
+cc_library_headers { name: "fuchsia-lib" }
+cc_library_headers { name: "linux-lib" }
+cc_library_headers { name: "linux_bionic-lib" }
+cc_library_headers { name: "windows-lib" }
+cc_library_headers {
+ name: "foo_headers",
+ header_libs: ["base-lib"],
+ target: {
+ android: { header_libs: ["android-lib"] },
+ darwin: { header_libs: ["darwin-lib"] },
+ fuchsia: { header_libs: ["fuchsia-lib"] },
+ linux_bionic: { header_libs: ["linux_bionic-lib"] },
+ linux_glibc: { header_libs: ["linux-lib"] },
+ windows: { header_libs: ["windows-lib"] },
+ },
+ bazel_module: { bp2build_available: true },
+}`,
+ expectedBazelTargets: []string{`cc_library_headers(
+ name = "android-lib",
+)`, `cc_library_headers(
+ name = "base-lib",
+)`, `cc_library_headers(
+ name = "darwin-lib",
+)`, `cc_library_headers(
+ name = "foo_headers",
+ deps = [
+ ":base-lib",
+ ] + select({
+ "//build/bazel/platforms/os:android": [
+ ":android-lib",
+ ],
+ "//build/bazel/platforms/os:darwin": [
+ ":darwin-lib",
+ ],
+ "//build/bazel/platforms/os:fuchsia": [
+ ":fuchsia-lib",
+ ],
+ "//build/bazel/platforms/os:linux": [
+ ":linux-lib",
+ ],
+ "//build/bazel/platforms/os:linux_bionic": [
+ ":linux_bionic-lib",
+ ],
+ "//build/bazel/platforms/os:windows": [
+ ":windows-lib",
+ ],
+ "//conditions:default": [],
+ }),
+)`, `cc_library_headers(
+ name = "fuchsia-lib",
+)`, `cc_library_headers(
+ name = "linux-lib",
+)`, `cc_library_headers(
+ name = "linux_bionic-lib",
+)`, `cc_library_headers(
+ name = "windows-lib",
+)`},
+ },
+ {
+ description: "cc_library_headers test with os-specific header_libs and export_header_lib_headers props",
+ moduleTypeUnderTest: "cc_library_headers",
+ moduleTypeUnderTestFactory: cc.LibraryHeaderFactory,
+ moduleTypeUnderTestBp2BuildMutator: cc.CcLibraryHeadersBp2Build,
+ depsMutators: []android.RegisterMutatorFunc{cc.RegisterDepsBp2Build},
+ filesystem: map[string]string{},
+ bp: soongCcLibraryPreamble + `
+cc_library_headers { name: "android-lib" }
+cc_library_headers { name: "exported-lib" }
+cc_library_headers {
+ name: "foo_headers",
+ target: {
+ android: { header_libs: ["android-lib"], export_header_lib_headers: ["exported-lib"] },
+ },
+}`,
+ expectedBazelTargets: []string{`cc_library_headers(
+ name = "android-lib",
+)`, `cc_library_headers(
+ name = "exported-lib",
+)`, `cc_library_headers(
+ name = "foo_headers",
+ deps = [] + select({
+ "//build/bazel/platforms/os:android": [
+ ":android-lib",
+ ":exported-lib",
+ ],
+ "//conditions:default": [],
+ }),
+)`},
+ },
}
dir := "."
@@ -180,6 +277,9 @@
config := android.TestConfig(buildDir, nil, testCase.bp, filesystem)
ctx := android.NewTestContext(config)
+ // TODO(jingwen): make this default for all bp2build tests
+ ctx.RegisterBp2BuildConfig(bp2buildConfig)
+
cc.RegisterCCBuildComponents(ctx)
ctx.RegisterModuleType("toolchain_library", cc.ToolchainLibraryFactory)
diff --git a/bp2build/cc_object_conversion_test.go b/bp2build/cc_object_conversion_test.go
index 9461739..fcc3080 100644
--- a/bp2build/cc_object_conversion_test.go
+++ b/bp2build/cc_object_conversion_test.go
@@ -324,7 +324,7 @@
copts = [
"-fno-addrsig",
] + select({
- "@bazel_tools//platforms:x86_32": [
+ "//build/bazel/platforms/arch:x86": [
"-fPIC",
],
"//conditions:default": [],
@@ -335,7 +335,7 @@
srcs = [
"a.cpp",
] + select({
- "@bazel_tools//platforms:arm": [
+ "//build/bazel/platforms/arch:arm": [
"arch/arm/file.S",
],
"//conditions:default": [],
@@ -378,16 +378,16 @@
copts = [
"-fno-addrsig",
] + select({
- "@bazel_tools//platforms:arm": [
+ "//build/bazel/platforms/arch:arm": [
"-Wall",
],
- "@bazel_tools//platforms:aarch64": [
+ "//build/bazel/platforms/arch:arm64": [
"-Wall",
],
- "@bazel_tools//platforms:x86_32": [
+ "//build/bazel/platforms/arch:x86": [
"-fPIC",
],
- "@bazel_tools//platforms:x86_64": [
+ "//build/bazel/platforms/arch:x86_64": [
"-fPIC",
],
"//conditions:default": [],
@@ -398,16 +398,16 @@
srcs = [
"base.cpp",
] + select({
- "@bazel_tools//platforms:arm": [
+ "//build/bazel/platforms/arch:arm": [
"arm.cpp",
],
- "@bazel_tools//platforms:aarch64": [
+ "//build/bazel/platforms/arch:arm64": [
"arm64.cpp",
],
- "@bazel_tools//platforms:x86_32": [
+ "//build/bazel/platforms/arch:x86": [
"x86.cpp",
],
- "@bazel_tools//platforms:x86_64": [
+ "//build/bazel/platforms/arch:x86_64": [
"x86_64.cpp",
],
"//conditions:default": [],
diff --git a/bp2build/configurability.go b/bp2build/configurability.go
index 47cf3c6..6ca0d6d 100644
--- a/bp2build/configurability.go
+++ b/bp2build/configurability.go
@@ -1,15 +1,112 @@
package bp2build
-import "android/soong/android"
+import (
+ "android/soong/android"
+ "android/soong/bazel"
+ "fmt"
+ "reflect"
+)
// Configurability support for bp2build.
-var (
- // A map of architectures to the Bazel label of the constraint_value.
- platformArchMap = map[android.ArchType]string{
- android.Arm: "@bazel_tools//platforms:arm",
- android.Arm64: "@bazel_tools//platforms:aarch64",
- android.X86: "@bazel_tools//platforms:x86_32",
- android.X86_64: "@bazel_tools//platforms:x86_64",
+// prettyPrintStringListAttribute converts a StringListAttribute to its Bazel
+// syntax. May contain a select statement.
+func prettyPrintStringListAttribute(stringList bazel.StringListAttribute, indent int) (string, error) {
+ ret, err := prettyPrint(reflect.ValueOf(stringList.Value), indent)
+ if err != nil {
+ return ret, err
}
-)
+
+ if !stringList.HasConfigurableValues() {
+ // Select statement not needed.
+ return ret, nil
+ }
+
+ // Create the selects for arch specific values.
+ selects := map[string]reflect.Value{}
+ for arch, selectKey := range bazel.PlatformArchMap {
+ selects[selectKey] = reflect.ValueOf(stringList.GetValueForArch(arch))
+ }
+
+ selectMap, err := prettyPrintSelectMap(selects, "[]", indent)
+ return ret + selectMap, err
+}
+
+// prettyPrintLabelListAttribute converts a LabelListAttribute to its Bazel
+// syntax. May contain select statements.
+func prettyPrintLabelListAttribute(labels bazel.LabelListAttribute, indent int) (string, error) {
+ // TODO(b/165114590): convert glob syntax
+ ret, err := prettyPrint(reflect.ValueOf(labels.Value.Includes), indent)
+ if err != nil {
+ return ret, err
+ }
+
+ if !labels.HasConfigurableValues() {
+ // Select statements not needed.
+ return ret, nil
+ }
+
+ // Create the selects for arch specific values.
+ archSelects := map[string]reflect.Value{}
+ for arch, selectKey := range bazel.PlatformArchMap {
+ archSelects[selectKey] = reflect.ValueOf(labels.GetValueForArch(arch).Includes)
+ }
+ selectMap, err := prettyPrintSelectMap(archSelects, "[]", indent)
+ if err != nil {
+ return "", err
+ }
+ ret += selectMap
+
+ // Create the selects for target os specific values.
+ osSelects := map[string]reflect.Value{}
+ for os, selectKey := range bazel.PlatformOsMap {
+ osSelects[selectKey] = reflect.ValueOf(labels.GetValueForOS(os).Includes)
+ }
+ selectMap, err = prettyPrintSelectMap(osSelects, "[]", indent)
+ return ret + selectMap, err
+}
+
+// prettyPrintSelectMap converts a map of select keys to reflected Values as a generic way
+// to construct a select map for any kind of attribute type.
+func prettyPrintSelectMap(selectMap map[string]reflect.Value, defaultValue string, indent int) (string, error) {
+ var selects string
+ for _, selectKey := range android.SortedStringKeys(selectMap) {
+ value := selectMap[selectKey]
+ if isZero(value) {
+ // Ignore zero values to not generate empty lists.
+ continue
+ }
+ s, err := prettyPrintSelectEntry(value, selectKey, indent)
+ if err != nil {
+ return "", err
+ }
+ selects += s + ",\n"
+ }
+
+ if len(selects) == 0 {
+ // No conditions (or all values are empty lists), so no need for a map.
+ return "", nil
+ }
+
+ // Create the map.
+ ret := " + select({\n"
+ ret += selects
+ // default condition comes last.
+ ret += fmt.Sprintf("%s\"%s\": %s,\n", makeIndent(indent+1), "//conditions:default", defaultValue)
+ ret += makeIndent(indent)
+ ret += "})"
+
+ return ret, nil
+}
+
+// prettyPrintSelectEntry converts a reflect.Value into an entry in a select map
+// with a provided key.
+func prettyPrintSelectEntry(value reflect.Value, key string, indent int) (string, error) {
+ s := makeIndent(indent + 1)
+ v, err := prettyPrint(value, indent+1)
+ if err != nil {
+ return "", err
+ }
+ s += fmt.Sprintf("\"%s\": %s", key, v)
+ return s, nil
+}
diff --git a/bp2build/testing.go b/bp2build/testing.go
index ede8044..ef3a78f 100644
--- a/bp2build/testing.go
+++ b/bp2build/testing.go
@@ -5,6 +5,13 @@
"android/soong/bazel"
)
+var (
+ // A default configuration for tests to not have to specify bp2build_available on top level targets.
+ bp2buildConfig = android.Bp2BuildConfig{
+ android.BP2BUILD_TOPLEVEL: android.Bp2BuildDefaultTrueRecursively,
+ }
+)
+
type nestedProps struct {
Nested_prop string
}
diff --git a/cc/Android.bp b/cc/Android.bp
index 79e92cb..cc4d9bc 100644
--- a/cc/Android.bp
+++ b/cc/Android.bp
@@ -20,6 +20,7 @@
"androidmk.go",
"api_level.go",
"builder.go",
+ "bp2build.go",
"cc.go",
"ccdeps.go",
"check.go",
diff --git a/cc/bp2build.go b/cc/bp2build.go
new file mode 100644
index 0000000..2a590eb
--- /dev/null
+++ b/cc/bp2build.go
@@ -0,0 +1,106 @@
+// 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 cc
+
+import (
+ "android/soong/android"
+ "android/soong/bazel"
+)
+
+// bp2build functions and helpers for converting cc_* modules to Bazel.
+
+func init() {
+ android.DepsBp2BuildMutators(RegisterDepsBp2Build)
+}
+
+func RegisterDepsBp2Build(ctx android.RegisterMutatorsContext) {
+ ctx.BottomUp("cc_bp2build_deps", depsBp2BuildMutator)
+}
+
+// A naive deps mutator to add deps on all modules across all combinations of
+// target props for cc modules. This is needed to make module -> bazel label
+// resolution work in the bp2build mutator later. This is probably
+// the wrong way to do it, but it works.
+//
+// TODO(jingwen): can we create a custom os mutator in depsBp2BuildMutator to do this?
+func depsBp2BuildMutator(ctx android.BottomUpMutatorContext) {
+ module, ok := ctx.Module().(*Module)
+ if !ok {
+ // Not a cc module
+ return
+ }
+
+ if !module.ConvertWithBp2build(ctx) {
+ return
+ }
+
+ var allDeps []string
+
+ for _, p := range module.GetTargetProperties(&BaseLinkerProperties{}) {
+ // arch specific linker props
+ if baseLinkerProps, ok := p.(*BaseLinkerProperties); ok {
+ allDeps = append(allDeps, baseLinkerProps.Header_libs...)
+ allDeps = append(allDeps, baseLinkerProps.Export_header_lib_headers...)
+ }
+ }
+
+ ctx.AddDependency(module, nil, android.SortedUniqueStrings(allDeps)...)
+}
+
+// bp2BuildParseHeaderLibs creates a label list attribute containing the header library deps of a module, including
+// configurable attribute values.
+func bp2BuildParseHeaderLibs(ctx android.TopDownMutatorContext, module *Module) bazel.LabelListAttribute {
+ var ret bazel.LabelListAttribute
+ for _, linkerProps := range module.linker.linkerProps() {
+ if baseLinkerProps, ok := linkerProps.(*BaseLinkerProperties); ok {
+ libs := baseLinkerProps.Header_libs
+ libs = append(libs, baseLinkerProps.Export_header_lib_headers...)
+ ret = bazel.MakeLabelListAttribute(
+ android.BazelLabelForModuleDeps(ctx, android.SortedUniqueStrings(libs)))
+ break
+ }
+ }
+
+ for os, p := range module.GetTargetProperties(&BaseLinkerProperties{}) {
+ if baseLinkerProps, ok := p.(*BaseLinkerProperties); ok {
+ libs := baseLinkerProps.Header_libs
+ libs = append(libs, baseLinkerProps.Export_header_lib_headers...)
+ libs = android.SortedUniqueStrings(libs)
+ ret.SetValueForOS(os.Name, android.BazelLabelForModuleDeps(ctx, libs))
+ }
+ }
+
+ return ret
+}
+
+// bp2BuildParseExportedIncludes creates a label list attribute contains the
+// exported included directories of a module.
+func bp2BuildParseExportedIncludes(ctx android.TopDownMutatorContext, module *Module) (bazel.LabelListAttribute, bazel.LabelListAttribute) {
+ libraryDecorator := module.linker.(*libraryDecorator)
+
+ includeDirs := libraryDecorator.flagExporter.Properties.Export_system_include_dirs
+ includeDirs = append(includeDirs, libraryDecorator.flagExporter.Properties.Export_include_dirs...)
+
+ includeDirsLabels := android.BazelLabelForModuleSrc(ctx, includeDirs)
+
+ var includeDirGlobs []string
+ for _, includeDir := range includeDirs {
+ includeDirGlobs = append(includeDirGlobs, includeDir+"/**/*.h")
+ includeDirGlobs = append(includeDirGlobs, includeDir+"/**/*.inc")
+ includeDirGlobs = append(includeDirGlobs, includeDir+"/**/*.hpp")
+ }
+
+ headersLabels := android.BazelLabelForModuleSrc(ctx, includeDirGlobs)
+ return bazel.MakeLabelListAttribute(includeDirsLabels), bazel.MakeLabelListAttribute(headersLabels)
+}
diff --git a/cc/library.go b/cc/library.go
index 091acfe..50fff7f 100644
--- a/cc/library.go
+++ b/cc/library.go
@@ -2046,38 +2046,6 @@
return outputFile
}
-func Bp2BuildParseHeaderLibs(ctx android.TopDownMutatorContext, module *Module) bazel.LabelListAttribute {
- var headerLibs []string
- for _, linkerProps := range module.linker.linkerProps() {
- if baseLinkerProps, ok := linkerProps.(*BaseLinkerProperties); ok {
- headerLibs = baseLinkerProps.Header_libs
- // FIXME: re-export include dirs from baseLinkerProps.Export_header_lib_headers?
- break
- }
- }
- headerLibsLabels := bazel.MakeLabelListAttribute(android.BazelLabelForModuleDeps(ctx, headerLibs))
- return headerLibsLabels
-}
-
-func Bp2BuildParseExportedIncludes(ctx android.TopDownMutatorContext, module *Module) (bazel.LabelListAttribute, bazel.LabelListAttribute) {
- libraryDecorator := module.linker.(*libraryDecorator)
-
- includeDirs := libraryDecorator.flagExporter.Properties.Export_system_include_dirs
- includeDirs = append(includeDirs, libraryDecorator.flagExporter.Properties.Export_include_dirs...)
-
- includeDirsLabels := android.BazelLabelForModuleSrc(ctx, includeDirs)
-
- var includeDirGlobs []string
- for _, includeDir := range includeDirs {
- includeDirGlobs = append(includeDirGlobs, includeDir+"/**/*.h")
- includeDirGlobs = append(includeDirGlobs, includeDir+"/**/*.inc")
- includeDirGlobs = append(includeDirGlobs, includeDir+"/**/*.hpp")
- }
-
- headersLabels := android.BazelLabelForModuleSrc(ctx, includeDirGlobs)
- return bazel.MakeLabelListAttribute(includeDirsLabels), bazel.MakeLabelListAttribute(headersLabels)
-}
-
type bazelCcLibraryStaticAttributes struct {
Copts []string
Srcs bazel.LabelListAttribute
@@ -2149,10 +2117,10 @@
allIncludes = append(allIncludes, localIncludeDirs...)
includesLabels := android.BazelLabelForModuleSrc(ctx, allIncludes)
- exportedIncludesLabels, exportedIncludesHeadersLabels := Bp2BuildParseExportedIncludes(ctx, module)
+ exportedIncludesLabels, exportedIncludesHeadersLabels := bp2BuildParseExportedIncludes(ctx, module)
includesLabels.Append(exportedIncludesLabels.Value)
- headerLibsLabels := Bp2BuildParseHeaderLibs(ctx, module)
+ headerLibsLabels := bp2BuildParseHeaderLibs(ctx, module)
depsLabels.Append(headerLibsLabels.Value)
attrs := &bazelCcLibraryStaticAttributes{
diff --git a/cc/library_headers.go b/cc/library_headers.go
index 8286848..c8dd2c2 100644
--- a/cc/library_headers.go
+++ b/cc/library_headers.go
@@ -94,9 +94,9 @@
return
}
- exportedIncludesLabels, exportedIncludesHeadersLabels := Bp2BuildParseExportedIncludes(ctx, module)
+ exportedIncludesLabels, exportedIncludesHeadersLabels := bp2BuildParseExportedIncludes(ctx, module)
- headerLibsLabels := Bp2BuildParseHeaderLibs(ctx, module)
+ headerLibsLabels := bp2BuildParseHeaderLibs(ctx, module)
attrs := &bazelCcLibraryHeadersAttributes{
Includes: exportedIncludesLabels,