Remove support for libstdc++ on Android/Linux/Darwin

It's now only supported on Windows, where we don't have libc++ support
yet.

Change-Id: I64891b7558d3d2942588687017a0c2f695c18d5c

4 files changed, 3 insertions, 47 deletions

diff --git a/cc/makevars.go b/cc/makevars.go
index f107eff8..f2214a27 100644
--- a/cc/makevars.go
+++ b/cc/makevars.go
@@ -109,8 +109,6 @@ func makeVarsToolchain(ctx android.MakeVarsContext, secondPrefix string,
 		toolchain.ToolchainLdflags(),
 		productExtraLdflags,
 	}, " "))
-	ctx.Strict(makePrefix+"SYSTEMCPP_CPPFLAGS", toolchain.SystemCppCppflags())
-	ctx.Strict(makePrefix+"SYSTEMCPP_LDFLAGS", toolchain.SystemCppLdflags())
 
 	includeFlags, err := ctx.Eval(toolchain.IncludeFlags())
 	if err != nil {
diff --git a/cc/stl.go b/cc/stl.go
index c5dbae36..280beed0 100644
--- a/cc/stl.go
+++ b/cc/stl.go
@@ -65,8 +65,7 @@ func (stl *stl) begin(ctx BaseModuleContext) {
 			}
 		} else {
 			switch stl.Properties.Stl {
-			case "libc++", "libc++_static",
-				"libstdc++":
+			case "libc++", "libc++_static":
 				return stl.Properties.Stl
 			case "none":
 				return ""
@@ -87,9 +86,7 @@ func (stl *stl) begin(ctx BaseModuleContext) {
 func (stl *stl) deps(ctx BaseModuleContext, deps Deps) Deps {
 	switch stl.Properties.SelectedStl {
 	case "libstdc++":
-		if ctx.Device() {
-			deps.SharedLibs = append(deps.SharedLibs, stl.Properties.SelectedStl)
-		}
+		// Nothing
 	case "libc++", "libc++_static":
 		if stl.Properties.SelectedStl == "libc++" {
 			deps.SharedLibs = append(deps.SharedLibs, stl.Properties.SelectedStl)
@@ -143,16 +140,7 @@ func (stl *stl) flags(ctx ModuleContext, flags Flags) Flags {
 			}
 		}
 	case "libstdc++":
-		// Using bionic's basic libstdc++. Not actually an STL. Only around until the
-		// tree is in good enough shape to not need it.
-		// Host builds will use GNU libstdc++.
-		if ctx.Device() {
-			flags.CFlags = append(flags.CFlags, "-I"+android.PathForSource(ctx, "bionic/libstdc++/include").String())
-		} else {
-			// Host builds will use the system C++. libc++ on Darwin, GNU libstdc++ everywhere else
-			flags.CppFlags = append(flags.CppFlags, flags.Toolchain.SystemCppCppflags())
-			flags.LdFlags = append(flags.LdFlags, flags.Toolchain.SystemCppLdflags())
-		}
+		// Nothing
 	case "ndk_system":
 		ndkSrcRoot := android.PathForSource(ctx, "prebuilts/ndk/current/sources/cxx-stl/system/include")
 		flags.CFlags = append(flags.CFlags, "-isystem "+ndkSrcRoot.String())
diff --git a/cc/toolchain.go b/cc/toolchain.go
index 87657ef5..2e2ee5a4 100644
--- a/cc/toolchain.go
+++ b/cc/toolchain.go
@@ -62,9 +62,6 @@ type Toolchain interface {
 	ShlibSuffix() string
 	ExecutableSuffix() string
 
-	SystemCppCppflags() string
-	SystemCppLdflags() string
-
 	AddressSanitizerRuntimeLibrary() string
 
 	AvailableLibraries() []string
@@ -119,14 +116,6 @@ func (toolchainBase) ClangAsflags() string {
 	return ""
 }
 
-func (toolchainBase) SystemCppCppflags() string {
-	return ""
-}
-
-func (toolchainBase) SystemCppLdflags() string {
-	return ""
-}
-
 func (toolchainBase) AddressSanitizerRuntimeLibrary() string {
 	return ""
 }
diff --git a/cc/x86_darwin_host.go b/cc/x86_darwin_host.go
index 65a2dcc7..a0643eff 100644
--- a/cc/x86_darwin_host.go
+++ b/cc/x86_darwin_host.go
@@ -38,14 +38,6 @@ var (
 		"-mmacosx-version-min=${macSdkVersion}",
 	}
 
-	darwinSystemCppCppflags = []string{
-		"-isystem ${macToolchainRoot}/usr/include/c++/v1",
-	}
-
-	darwinSystemCppLdflags = []string{
-		"-stdlib=libc++",
-	}
-
 	// Extended cflags
 	darwinX86Cflags = []string{
 		"-m32",
@@ -129,9 +121,6 @@ func init() {
 	pctx.StaticVariable("darwinClangCflags", strings.Join(darwinClangCflags, " "))
 	pctx.StaticVariable("darwinClangLdflags", strings.Join(darwinClangLdflags, " "))
 
-	pctx.StaticVariable("darwinSystemCppCppflags", strings.Join(darwinSystemCppCppflags, " "))
-	pctx.StaticVariable("darwinSystemCppLdflags", strings.Join(darwinSystemCppLdflags, " "))
-
 	// Extended cflags
 	pctx.StaticVariable("darwinX86Cflags", strings.Join(darwinX86Cflags, " "))
 	pctx.StaticVariable("darwinX8664Cflags", strings.Join(darwinX8664Cflags, " "))
@@ -257,14 +246,6 @@ func (t *toolchainDarwin) ShlibSuffix() string {
 	return ".dylib"
 }
 
-func (t *toolchainDarwin) SystemCppCppflags() string {
-	return "${darwinSystemCppCppflags}"
-}
-
-func (t *toolchainDarwin) SystemCppLdflags() string {
-	return "${darwinSystemCppLdflags}"
-}
-
 func (t *toolchainDarwin) AvailableLibraries() []string {
 	return darwinAvailableLibraries
 }