refactor: move common parts of libselinux builds into defaults

Bug: 37343404
Bug: 37919668
Test: Build and boot

(cherry-picked from commit 51428ba055)

Change-Id: If42d24d381839c2a39f8cff3fc82ce5d3073eeb7
Merged-In: I375a4a2926326a5f733f4a49348e1ffae086ffd6

libselinux/Android.bp

@@ -1,4 +1,3 @@
-common_LIBRARIES = ["libpcre2"]
 common_CFLAGS = [
     "-DUSE_PCRE2",
 
@@ -15,24 +14,10 @@ common_CFLAGS = [
 ]
 
 cc_defaults {
-    name: "libselinux_flags",
+    name: "libselinux_defaults",
 
     cflags: common_CFLAGS,
 
-    target: {
-        host: {
-            cflags: [
-                "-DBUILD_HOST",
-            ],
-        },
-    },
-}
-
-cc_library {
-    name: "libselinux_vendor",
-    defaults: ["libselinux_flags"],
-    vendor: true,
-
     srcs: [
         "src/booleans.c",
         "src/callbacks.c",
@@ -48,6 +33,12 @@ cc_library {
     ],
 
     target: {
+        host: {
+            cflags: [
+                "-DBUILD_HOST",
+            ],
+        },
+
         android: {
             srcs: [
                 "src/android/android.c",
@@ -90,45 +81,44 @@ cc_library {
 
             local_include_dirs: [ "src" ],
 
-            version_script: "exported_vendor.map",
-
             // 1003 corresponds to auditd, from system/core/logd/event.logtags
             cflags: [
                 "-DAUDITD_LOG_TAG=1003",
             ],
-        },
-    },
 
-    static: {
-        whole_static_libs: common_LIBRARIES,
-    },
-    shared: {
-        shared_libs: common_LIBRARIES,
+            // mapping.c has redundant check of array p_in->perms.
+            clang_cflags: ["-Wno-pointer-bool-conversion"],
+        }
     },
 
     local_include_dirs: ["include"],
     export_include_dirs: ["include"],
+
+    static: {
+        whole_static_libs: ["libpcre2"],
+    },
+    shared: {
+        shared_libs: ["libpcre2"],
+    },
+}
+
+cc_library {
+    name: "libselinux_vendor",
+    defaults: ["libselinux_defaults"],
+    vendor: true,
+
+    target: {
+        android: {
+            version_script: "exported_vendor.map",
+        },
+    },
 }
 
 cc_library {
     name: "libselinux",
-    defaults: ["libselinux_flags"],
+    defaults: ["libselinux_defaults"],
     host_supported: true,
 
-    srcs: [
-        "src/booleans.c",
-        "src/callbacks.c",
-        "src/freecon.c",
-        "src/label_backends_android.c",
-        "src/label.c",
-        "src/label_file.c",
-        "src/label_support.c",
-        "src/matchpathcon.c",
-        "src/regex.c",
-        "src/setrans_client.c",
-        "src/sha1.c",
-    ],
-
     target: {
         linux: {
             srcs: [
@@ -174,82 +164,30 @@ cc_library {
                 "src/setexecfilecon.c",
                 "src/stringrep.c",
             ],
-
         },
+
         android: {
             srcs: [
-                "src/android/android.c",
-                "src/android/android_seapp.c",
-                "src/avc.c",
-                "src/avc_internal.c",
-                "src/avc_sidtab.c",
-                "src/canonicalize_context.c",
-                "src/checkAccess.c",
-                "src/check_context.c",
-                "src/compute_av.c",
-                "src/compute_create.c",
-                "src/compute_member.c",
-                "src/context.c",
-                "src/deny_unknown.c",
-                "src/disable.c",
-                "src/enabled.c",
-                "src/fgetfilecon.c",
-                "src/fsetfilecon.c",
-                "src/getenforce.c",
-                "src/getfilecon.c",
-                "src/get_initial_context.c",
-                "src/getpeercon.c",
-                "src/init.c",
-                "src/lgetfilecon.c",
-                "src/load_policy.c",
-                "src/lsetfilecon.c",
-                "src/mapping.c",
-                "src/policyvers.c",
-                "src/procattr.c",
-                "src/sestatus.c",
-                "src/setenforce.c",
-                "src/setfilecon.c",
-                "src/stringrep.c",
+                "src/android/android_platform.c",
             ],
 
-            shared_libs: [
-                "libcrypto",
-                "liblog",
-            ],
             static: {
                 whole_static_libs: ["libpackagelistparser"],
             },
+
             shared: {
                 shared_libs: ["libpackagelistparser"],
             },
 
-            local_include_dirs: ["src"],
-
             version_script: "exported.map",
-
-            // 1003 corresponds to auditd, from system/core/logd/event.logtags
-            cflags: [
-                "-DAUDITD_LOG_TAG=1003",
-            ],
-            // mapping.c has redundant check of array p_in->perms.
-            clang_cflags: ["-Wno-pointer-bool-conversion"],
         },
     },
-
-    static: {
-        whole_static_libs: common_LIBRARIES,
-    },
-    shared: {
-        shared_libs: common_LIBRARIES,
-    },
-
-    local_include_dirs: ["include"],
-    export_include_dirs: ["include"],
 }
 
 cc_binary_host {
     name: "sefcontext_compile",
-    defaults: ["libselinux_flags"],
+    defaults: ["libselinux_defaults"],
+    cflags: ["-DUSE_PCRE2"],
     srcs: ["utils/sefcontext_compile.c"],
 
     static_libs: [