diff --git a/adb/Android.mk b/adb/Android.mk
index e091ba8..7d6238c 100644
--- a/adb/Android.mk
+++ b/adb/Android.mk
@@ -11,6 +11,13 @@
     adb_host_clang := true
 endif
 
+adb_version := $(shell git -C $(LOCAL_PATH) rev-parse --short=12 HEAD 2>/dev/null)-android
+
+ADB_COMMON_CFLAGS := \
+    -Wall -Werror \
+    -Wno-unused-parameter \
+    -DADB_REVISION='"$(adb_version)"' \
+
 # libadb
 # =========================================================
 
@@ -37,8 +44,7 @@
     transport_test.cpp \
 
 LIBADB_CFLAGS := \
-    -Wall -Werror \
-    -Wno-unused-parameter \
+    $(ADB_COMMON_CFLAGS) \
     -Wno-missing-field-initializers \
     -fvisibility=hidden \
 
@@ -171,8 +177,7 @@
     file_sync_client.cpp \
 
 LOCAL_CFLAGS += \
-    -Wall -Werror \
-    -Wno-unused-parameter \
+    $(ADB_COMMON_CFLAGS) \
     -D_GNU_SOURCE \
     -DADB_HOST=1 \
 
@@ -224,10 +229,9 @@
     set_verity_enable_state_service.cpp \
 
 LOCAL_CFLAGS := \
+    $(ADB_COMMON_CFLAGS) \
     -DADB_HOST=0 \
     -D_GNU_SOURCE \
-    -Wall -Werror \
-    -Wno-unused-parameter \
     -Wno-deprecated-declarations \
 
 ifneq (,$(filter userdebug eng,$(TARGET_BUILD_VARIANT)))
diff --git a/adb/adb_main.cpp b/adb/adb_main.cpp
index bd22d74..3f88d13 100644
--- a/adb/adb_main.cpp
+++ b/adb/adb_main.cpp
@@ -358,29 +358,25 @@
 }
 #endif
 
+// TODO(danalbert): Split this file up into adb_main.cpp and adbd_main.cpp.
 int main(int argc, char **argv) {
 #if ADB_HOST
+    // adb client/server
     adb_sysdeps_init();
-#else
-    close_stdin();
-#endif
     adb_trace_init();
-
-#if ADB_HOST
     D("Handling commandline()\n");
     return adb_commandline(argc - 1, const_cast<const char**>(argv + 1));
 #else
-    /* If adbd runs inside the emulator this will enable adb tracing via
-     * adb-debug qemud service in the emulator. */
-    adb_qemu_trace_init();
+    // adbd
     while (true) {
-        int c;
-        int option_index = 0;
         static struct option opts[] = {
-            {"root_seclabel", required_argument, 0, 's' },
-            {"device_banner", required_argument, 0, 'b' }
+            {"root_seclabel", required_argument, nullptr, 's'},
+            {"device_banner", required_argument, nullptr, 'b'},
+            {"version", no_argument, nullptr, 'v'},
         };
-        c = getopt_long(argc, argv, "", opts, &option_index);
+
+        int option_index = 0;
+        int c = getopt_long(argc, argv, "", opts, &option_index);
         if (c == -1)
             break;
         switch (c) {
@@ -390,11 +386,24 @@
         case 'b':
             adb_device_banner = optarg;
             break;
+        case 'v':
+            printf("Android Debug Bridge Daemon version %d.%d.%d %s\n",
+                   ADB_VERSION_MAJOR, ADB_VERSION_MINOR, ADB_SERVER_VERSION,
+                   ADB_REVISION);
+            return 0;
         default:
             break;
         }
     }
 
+    close_stdin();
+
+    adb_trace_init();
+
+    /* If adbd runs inside the emulator this will enable adb tracing via
+     * adb-debug qemud service in the emulator. */
+    adb_qemu_trace_init();
+
     D("Handling main()\n");
     return adb_main(0, DEFAULT_ADB_PORT);
 #endif
diff --git a/adb/commandline.cpp b/adb/commandline.cpp
index ed09028..76eb8c0 100644
--- a/adb/commandline.cpp
+++ b/adb/commandline.cpp
@@ -66,8 +66,8 @@
 }
 
 static void version(FILE* out) {
-    fprintf(out, "Android Debug Bridge version %d.%d.%d\n",
-            ADB_VERSION_MAJOR, ADB_VERSION_MINOR, ADB_SERVER_VERSION);
+    fprintf(out, "Android Debug Bridge version %d.%d.%d %s\n", ADB_VERSION_MAJOR,
+            ADB_VERSION_MINOR, ADB_SERVER_VERSION, ADB_REVISION);
 }
 
 static void help() {