diff --git a/libs/vr/libbufferhub/Android.bp b/libs/vr/libbufferhub/Android.bp
index 17725f8..2819fe9 100644
--- a/libs/vr/libbufferhub/Android.bp
+++ b/libs/vr/libbufferhub/Android.bp
@@ -42,6 +42,9 @@
         "-DLOG_TAG=\"libbufferhub\"",
         "-DTRACE=0",
         "-DATRACE_TAG=ATRACE_TAG_GRAPHICS",
+        "-Wall",
+        "-Werror",
+        "-Wno-error=sign-compare", // to fix later
     ],
     export_include_dirs: localIncludeFiles,
     static_libs: staticLibraries,
@@ -55,5 +58,10 @@
     static_libs: ["libbufferhub"] + staticLibraries,
     shared_libs: sharedLibraries,
     name: "bufferhub_tests",
+    cflags: [
+        "-Wall",
+        "-Werror",
+        "-Wno-error=sign-compare", // to fix later
+    ],
 }
 
diff --git a/libs/vr/libbufferhubqueue/Android.bp b/libs/vr/libbufferhubqueue/Android.bp
index a7c33ee..efd5cc7 100644
--- a/libs/vr/libbufferhubqueue/Android.bp
+++ b/libs/vr/libbufferhubqueue/Android.bp
@@ -48,6 +48,11 @@
         "-DLOG_TAG=\"libbufferhubqueue\"",
         "-DTRACE=0",
         "-DATRACE_TAG=ATRACE_TAG_GRAPHICS",
+        "-Wall",
+        "-Werror",
+        "-Wno-error=sign-compare", // to fix later
+        "-Wno-unused-parameter",
+        "-Wno-unused-variable",
     ],
     srcs: sourceFiles,
     export_include_dirs: includeFiles,
diff --git a/libs/vr/libbufferhubqueue/tests/Android.bp b/libs/vr/libbufferhubqueue/tests/Android.bp
index 865573c..21a675f 100644
--- a/libs/vr/libbufferhubqueue/tests/Android.bp
+++ b/libs/vr/libbufferhubqueue/tests/Android.bp
@@ -28,6 +28,9 @@
         "-DTRACE=0",
         "-O0",
         "-g",
+        "-Wall",
+        "-Werror",
+        "-Wno-error=sign-compare", // to fix later
     ],
     name: "buffer_hub_queue-test",
     tags: ["optional"],
@@ -42,6 +45,9 @@
         "-DTRACE=0",
         "-O0",
         "-g",
+        "-Wall",
+        "-Werror",
+        "-Wno-error=sign-compare", // to fix later
     ],
     name: "buffer_hub_queue_producer-test",
     tags: ["optional"],
diff --git a/libs/vr/libdisplay/Android.bp b/libs/vr/libdisplay/Android.bp
index d90521a..abc8159 100644
--- a/libs/vr/libdisplay/Android.bp
+++ b/libs/vr/libdisplay/Android.bp
@@ -55,6 +55,8 @@
         "-DATRACE_TAG=ATRACE_TAG_GRAPHICS",
         "-DGL_GLEXT_PROTOTYPES",
         "-DEGL_EGLEXT_PROTOTYPES",
+        "-Wall",
+        "-Werror",
     ],  // + [ "-UNDEBUG", "-DDEBUG", "-O0", "-g" ],
     export_include_dirs: localIncludeFiles,
     shared_libs: sharedLibraries,
diff --git a/libs/vr/libdisplay/include/dvr/dvr_display_types.h b/libs/vr/libdisplay/include/dvr/dvr_display_types.h
index 25364d8..fd69843 100644
--- a/libs/vr/libdisplay/include/dvr/dvr_display_types.h
+++ b/libs/vr/libdisplay/include/dvr/dvr_display_types.h
@@ -13,7 +13,7 @@
 #ifndef __FLOAT32X4T_86
 #define __FLOAT32X4T_86
 typedef float float32x4_t __attribute__((__vector_size__(16)));
-typedef struct float32x4x4_t { float32x4_t val[4]; };
+typedef struct float32x4x4_t { float32x4_t val[4]; } float32x4x4_t;
 #endif
 #endif
 
diff --git a/libs/vr/libdvr/Android.bp b/libs/vr/libdvr/Android.bp
index 7a7c8aa..65123d6 100644
--- a/libs/vr/libdvr/Android.bp
+++ b/libs/vr/libdvr/Android.bp
@@ -22,6 +22,8 @@
 cflags = [
     "-DLOG_TAG=\"libdvr\"",
     "-DTRACE=0",
+    "-Wall",
+    "-Werror",
 ]
 
 srcs = [
diff --git a/libs/vr/libdvr/tests/Android.bp b/libs/vr/libdvr/tests/Android.bp
index ef746e2..21e9643 100644
--- a/libs/vr/libdvr/tests/Android.bp
+++ b/libs/vr/libdvr/tests/Android.bp
@@ -48,6 +48,11 @@
         "-DTRACE=0",
         "-O0",
         "-g",
+        "-Wall",
+        "-Werror",
+        "-Wno-error=macro-redefined", // to fix later
+        "-Wno-error=sign-compare", // to fix later
+        "-Wno-unused-variable",
     ],
     name: "dvr_api-test",
 }
diff --git a/libs/vr/libdvrcommon/Android.bp b/libs/vr/libdvrcommon/Android.bp
index 527cdbd..8d2beca 100644
--- a/libs/vr/libdvrcommon/Android.bp
+++ b/libs/vr/libdvrcommon/Android.bp
@@ -40,6 +40,8 @@
     cflags: [
         "-DLOG_TAG=\"libdvrcommon\"",
         "-DTRACE=0",
+        "-Wall",
+        "-Werror",
     ],
     export_include_dirs: localIncludeFiles,
 
@@ -59,6 +61,11 @@
     tags: ["optional"],
 
     srcs: testFiles,
+    cflags: [
+        "-Wall",
+        "-Werror",
+        "-Wno-unused-parameter",
+    ],
 
     shared_libs: sharedLibraries,
 
diff --git a/libs/vr/libperformance/Android.bp b/libs/vr/libperformance/Android.bp
index 364873d..6a46876 100644
--- a/libs/vr/libperformance/Android.bp
+++ b/libs/vr/libperformance/Android.bp
@@ -32,7 +32,9 @@
     srcs: sourceFiles,
     cflags: [
         "-DLOG_TAG=\"libperformance\"",
-	"-DTRACE=0"
+        "-DTRACE=0",
+        "-Wall",
+        "-Werror",
     ],
     export_include_dirs: includeFiles,
     static_libs: staticLibraries,
diff --git a/libs/vr/libvrflinger/Android.bp b/libs/vr/libvrflinger/Android.bp
index de26a74..f2c88ad 100644
--- a/libs/vr/libvrflinger/Android.bp
+++ b/libs/vr/libvrflinger/Android.bp
@@ -71,6 +71,10 @@
         "-DATRACE_TAG=ATRACE_TAG_GRAPHICS",
         "-DGL_GLEXT_PROTOTYPES",
         "-DEGL_EGLEXT_PROTOTYPES",
+        "-Wall",
+        "-Werror",
+        "-Wno-error=sign-compare", // to fix later
+        "-Wno-unused-variable",
     ],
     shared_libs: sharedLibraries,
     whole_static_libs: staticLibraries,
diff --git a/libs/vr/libvrsensor/Android.bp b/libs/vr/libvrsensor/Android.bp
index abad78b..1a15b6a 100644
--- a/libs/vr/libvrsensor/Android.bp
+++ b/libs/vr/libvrsensor/Android.bp
@@ -40,6 +40,10 @@
 
 cc_library {
     srcs: sourceFiles,
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
     export_include_dirs: includeFiles,
     static_libs: staticLibraries,
     shared_libs: sharedLibraries,
diff --git a/libs/vr/libvrsensor/include/dvr/pose_client.h b/libs/vr/libvrsensor/include/dvr/pose_client.h
index ed75f84..d32df64 100644
--- a/libs/vr/libvrsensor/include/dvr/pose_client.h
+++ b/libs/vr/libvrsensor/include/dvr/pose_client.h
@@ -7,7 +7,7 @@
 #ifndef __FLOAT32X4T_86
 #define __FLOAT32X4T_86
 typedef float float32x4_t __attribute__ ((__vector_size__ (16)));
-typedef struct float32x4x4_t { float32x4_t val[4]; };
+typedef struct float32x4x4_t { float32x4_t val[4]; } float32x4x4_t;
 #endif
 #endif