From e554015b3a84ff080c61029963b9f94cf33d3af6 Mon Sep 17 00:00:00 2001
From: Przemyslaw Szczepaniak <pszczepaniak@google.com>
Date: Tue, 5 Dec 2017 10:27:52 +0000
Subject: [PATCH] Add PLATFORM_MIN_SUPPORTED_TARGET_SDK_VERSION

Exposed as ro.build.version.min_supported_target_sdk build_property

Test: make
Bug: 63926630
Change-Id: I8084fd4c54d9c2fb5e2683430e2b3aaf4c5f4a7a
---
 core/Makefile            | 1 +
 core/version_defaults.mk | 7 +++++++
 tools/buildinfo.sh       | 1 +
 3 files changed, 9 insertions(+)

diff --git a/core/Makefile b/core/Makefile
index 521d78d09..2850e59a8 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -337,6 +337,7 @@ endif
 			PLATFORM_PREVIEW_SDK_VERSION="$(PLATFORM_PREVIEW_SDK_VERSION)" \
 			PLATFORM_VERSION_CODENAME="$(PLATFORM_VERSION_CODENAME)" \
 			PLATFORM_VERSION_ALL_CODENAMES="$(PLATFORM_VERSION_ALL_CODENAMES)" \
+			PLATFORM_MIN_SUPPORTED_TARGET_SDK_VERSION="$(PLATFORM_MIN_SUPPORTED_TARGET_SDK_VERSION)" \
 			BUILD_VERSION_TAGS="$(BUILD_VERSION_TAGS)" \
 			BUILD_FINGERPRINT="$(BUILD_FINGERPRINT_FROM_FILE)" \
 			$(if $(OEM_THUMBPRINT_PROPERTIES),BUILD_THUMBPRINT="$(BUILD_THUMBPRINT)") \
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 845462709..1fbef2dc3 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -233,3 +233,10 @@ ifndef BUILD_NUMBER
   # anyone trying to parse it as an integer will probably get "0".
   BUILD_NUMBER := eng.$(shell echo $${USER:0:6}).$(shell $(DATE) +%Y%m%d.%H%M%S)
 endif
+
+ifndef PLATFORM_MIN_SUPPORTED_TARGET_SDK_VERSION
+  # Used to set minimum supported target sdk version. Apps targeting sdk
+  # version lower than the set value will fail to install and run on android
+  # device.
+  PLATFORM_MIN_SUPPORTED_TARGET_SDK_VERSION := 0
+endif
diff --git a/tools/buildinfo.sh b/tools/buildinfo.sh
index d214aabbe..5a5446293 100755
--- a/tools/buildinfo.sh
+++ b/tools/buildinfo.sh
@@ -13,6 +13,7 @@ echo "ro.build.version.all_codenames=$PLATFORM_VERSION_ALL_CODENAMES"
 echo "ro.build.version.release=$PLATFORM_VERSION"
 echo "ro.build.version.security_patch=$PLATFORM_SECURITY_PATCH"
 echo "ro.build.version.base_os=$PLATFORM_BASE_OS"
+echo "ro.build.version.min_supported_target_sdk=$PLATFORM_MIN_SUPPORTED_TARGET_SDK_VERSION"
 echo "ro.build.date=`$DATE`"
 echo "ro.build.date.utc=`$DATE +%s`"
 echo "ro.build.type=$TARGET_BUILD_TYPE"