Use target.linux for all linux kernel based targets

Now in Android.bp files, target.linux applies to all targets running a
linux kernel (android, linux_glibc, linux_bionic). So common
flags/sources/etc can be combined instead of copying them to each
target.

Test: m
Change-Id: If7ad138ea1c540c160731f86b6ccc0daa5c69b83

base/Android.bp

@@ -64,16 +64,20 @@ cc_library {
     target: {
         android: {
             srcs: [
-                "errors_unix.cpp",
                 "properties.cpp",
-                "chrono_utils.cpp",
             ],
-            cppflags: ["-Wexit-time-destructors"],
             sanitize: {
                 misc_undefined: ["integer"],
             },
 
         },
+        linux: {
+            srcs: [
+                "chrono_utils.cpp",
+                "errors_unix.cpp",
+            ],
+            cppflags: ["-Wexit-time-destructors"],
+        },
         darwin: {
             srcs: [
                 "chrono_utils.cpp",
@@ -82,20 +86,8 @@ cc_library {
             cppflags: ["-Wexit-time-destructors"],
         },
         linux_bionic: {
-            srcs: [
-                "chrono_utils.cpp",
-                "errors_unix.cpp",
-            ],
-            cppflags: ["-Wexit-time-destructors"],
             enabled: true,
         },
-        linux_glibc: {
-            srcs: [
-                "chrono_utils.cpp",
-                "errors_unix.cpp",
-            ],
-            cppflags: ["-Wexit-time-destructors"],
-        },
         windows: {
             srcs: [
                 "errors_windows.cpp",
@@ -127,15 +119,12 @@ cc_test {
     ],
     target: {
         android: {
-            srcs: [
-                "chrono_utils_test.cpp",
-                "properties_test.cpp"
-            ],
+            srcs: ["properties_test.cpp"],
             sanitize: {
                 misc_undefined: ["integer"],
             },
         },
-        linux_glibc: {
+        linux: {
             srcs: ["chrono_utils_test.cpp"],
         },
         windows: {

libbacktrace/Android.bp

@@ -83,20 +83,7 @@ cc_library {
         darwin: {
             enabled: true,
         },
-        linux_glibc: {
-            srcs: libbacktrace_sources,
-
-            shared_libs: [
-                "libbase",
-                "liblog",
-                "libunwind",
-                "libunwindstack",
-            ],
-
-            static_libs: ["libcutils"],
-        },
-        linux_bionic: {
-            enabled: true,
+        linux: {
             srcs: libbacktrace_sources,
 
             shared_libs: [
@@ -109,16 +96,7 @@ cc_library {
             static_libs: ["libcutils"],
         },
         android: {
-            srcs: libbacktrace_sources,
-
-            shared_libs: [
-                "libbase",
-                "liblog",
-                "libunwind",
-                "libunwindstack",
-            ],
-
-            static_libs: ["libasync_safe", "libcutils"],
+            static_libs: ["libasync_safe"],
         },
     },
     whole_static_libs: ["libdemangle"],
@@ -135,13 +113,7 @@ cc_library_shared {
     srcs: ["backtrace_testlib.cpp"],
 
     target: {
-        linux_glibc: {
-            shared_libs: [
-                "libunwind",
-                "libunwindstack",
-            ],
-        },
-        android: {
+        linux: {
             shared_libs: [
                 "libunwind",
                 "libunwindstack",

libutils/Android.bp

@@ -93,8 +93,6 @@ cc_library {
     target: {
         android: {
             srcs: [
-                "Looper.cpp",
-                "ProcessCallStack.cpp",
                 "Trace.cpp",
             ],
 
@@ -112,6 +110,12 @@ cc_library {
                 misc_undefined: ["integer"],
             },
         },
+        linux: {
+            srcs: [
+                "Looper.cpp",
+                "ProcessCallStack.cpp",
+            ],
+        },
 
         host: {
             cflags: ["-DLIBUTILS_NATIVE=1"],
@@ -121,18 +125,8 @@ cc_library {
             },
         },
 
-        linux_glibc: {
-            srcs: [
-                "Looper.cpp",
-                "ProcessCallStack.cpp",
-            ],
-        },
         linux_bionic: {
             enabled: true,
-            srcs: [
-                "Looper.cpp",
-                "ProcessCallStack.cpp",
-            ],
         },
 
         darwin: {

libutils/tests/Android.bp

@@ -34,8 +34,6 @@ cc_test {
     target: {
         android: {
             srcs: [
-                "Looper_test.cpp",
-                "RefBase_test.cpp",
                 "SystemClock_test.cpp",
             ],
             shared_libs: [
@@ -46,7 +44,7 @@ cc_test {
                 "libbase",
             ],
         },
-        linux_glibc: {
+        linux: {
             srcs: [
                 "Looper_test.cpp",
                 "RefBase_test.cpp",