Show build config in dumpsys SurfaceFlinger

This adds a line to the "dumpsys SurfaceFlinger" output that shows
build-time configuration values.

Example:
 Build configuration: [sf HAS_CONTEXT_PRIORITY] [libui] \
  [libgui USE_FENCE_SYNC]

Bug 7206633

Change-Id: Ibe1856b459d34a4be6ee83a4ebfd2807e6cc68a0

2 files changed, 38 insertions, 1 deletions

diff --git a/libs/ui/Android.mk b/libs/ui/Android.mk
index 80c28a1..0d2e44c 100644
--- a/libs/ui/Android.mk
+++ b/libs/ui/Android.mk
@@ -23,7 +23,8 @@ LOCAL_SRC_FILES:= \
 	GraphicBufferMapper.cpp \
 	PixelFormat.cpp \
 	Rect.cpp \
-	Region.cpp
+	Region.cpp \
+	UiConfig.cpp
 
 LOCAL_SHARED_LIBRARIES := \
 	libcutils \
diff --git a/libs/ui/UiConfig.cpp b/libs/ui/UiConfig.cpp
new file mode 100644
index 0000000..8b2130e
--- /dev/null
+++ b/libs/ui/UiConfig.cpp
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <ui/UiConfig.h>
+
+namespace android {
+
+#define STRINGIFY(x) #x
+#define TOSTRING(x) STRINGIFY(x)
+
+void appendUiConfigString(String8& configStr)
+{
+    static const char* config =
+            " [libui"
+#ifdef FRAMEBUFFER_FORCE_FORMAT
+            " FRAMEBUFFER_FORCE_FORMAT=" TOSTRING(FRAMEBUFFER_FORCE_FORMAT)
+#endif
+            "]";
+    configStr.append(config);
+}
+
+
+}; // namespace android