--- a/build/autoconf/android.m4
+++ b/build/autoconf/android.m4
@@ -403,9 +403,39 @@ case "$target" in
       AC_MSG_ERROR([The program aidl was not found.  Use --with-android-sdk={android-sdk-dir}.])
     fi
     if test -z "$ADB" -o "$ADB" = ":"; then
       AC_MSG_ERROR([The program adb was not found.  Use --with-android-sdk={android-sdk-dir}.])
     fi
     ;;
 esac
 
+MOZ_ARG_WITH_STRING(android-min-sdk,
+[  --with-android-min-sdk=[VER]     Impose a minimum Firefox for Android SDK version],
+[ MOZ_ANDROID_MIN_SDK_VERSION=$withval ])
+
+MOZ_ARG_WITH_STRING(android-max-sdk,
+[  --with-android-max-sdk=[VER]     Impose a maximum Firefox for Android SDK version],
+[ MOZ_ANDROID_MAX_SDK_VERSION=$withval ])
+
+if test -n "$MOZ_ANDROID_MIN_SDK_VERSION"; then
+    if test -n "$MOZ_ANDROID_MAX_SDK_VERSION"; then
+        if test $MOZ_ANDROID_MAX_SDK_VERSION -lt $MOZ_ANDROID_MIN_SDK_VERSION ; then
+            AC_MSG_ERROR([--with-android-max-sdk must be at least the value of --with-android-min-sdk.])
+        fi
+    fi
+
+    if test $MOZ_ANDROID_MIN_SDK_VERSION -gt $ANDROID_TARGET_SDK ; then
+        AC_MSG_ERROR([--with-android-min-sdk is expected to be less than $ANDROID_TARGET_SDK])
+    fi
+
+    AC_DEFINE_UNQUOTED(MOZ_ANDROID_MIN_SDK_VERSION, $MOZ_ANDROID_MIN_SDK_VERSION)
+fi
+
+if test -n "$MOZ_ANDROID_MAX_SDK_VERSION"; then
+    if test $MOZ_ANDROID_MAX_SDK_VERSION -lt $1 ; then
+        AC_MSG_ERROR([--with-android-max-sdk must be at least $1.])
+    fi
+
+    AC_DEFINE_UNQUOTED(MOZ_ANDROID_MAX_SDK_VERSION, $MOZ_ANDROID_MAX_SDK_VERSION)
+fi
+
 ])

--- a/mobile/android/confvars.sh
+++ b/mobile/android/confvars.sh
@@ -7,16 +7,20 @@ MOZ_APP_VENDOR=Mozilla
 
 MOZ_APP_VERSION=34.0a1
 MOZ_APP_UA_NAME=Firefox
 
 MOZ_BRANDING_DIRECTORY=mobile/android/branding/unofficial
 MOZ_OFFICIAL_BRANDING_DIRECTORY=mobile/android/branding/official
 # MOZ_APP_DISPLAYNAME is set by branding/configure.sh
 
+# We support Android SDK version 9 and up by default.
+# See the --enable-android-min-sdk and --enable-android-max-sdk arguments in configure.in.
+MOZ_ANDROID_MIN_SDK_VERSION=9
+
 MOZ_SAFE_BROWSING=1
 
 MOZ_DISABLE_CRYPTOLEGACY=1
 
 # Enable getUserMedia
 MOZ_MEDIA_NAVIGATOR=1
 
 # Enable NFC permission