Codenames, Tags, and Build Numbers

In this document

At a high level, Android development happens around families of releases, which use code names ordered alphabetically after tasty treats.

Platform Codenames, Versions, API Levels, and NDK Releases

The code names match the following version numbers, along with API levels and NDK releases provided for convenience:

Code name Version API level
(no code name) 1.0 API level 1
(no code name) 1.1 API level 2
Cupcake 1.5 API level 3, NDK 1
Donut 1.6 API level 4, NDK 2
Eclair 2.0 API level 5
Eclair 2.0.1 API level 6
Eclair 2.1 API level 7, NDK 3
Froyo 2.2.x API level 8, NDK 4
Gingerbread 2.3 - 2.3.2 API level 9, NDK 5
Gingerbread 2.3.3 - 2.3.7 API level 10
Honeycomb 3.0 API level 11
Honeycomb 3.1 API level 12, NDK 6
Honeycomb 3.2.x API level 13
Ice Cream Sandwich 4.0.1 - 4.0.2 API level 14, NDK 7
Ice Cream Sandwich 4.0.3 - 4.0.4 API level 15, NDK 8
Jelly Bean 4.1.x API level 16
Jelly Bean 4.2.x API level 17
Jelly Bean 4.3.x API level 18
KitKat 4.4 - 4.4.2 API level 19

Starting with Cupcake, individual builds are identified with a short build code, e.g. FRF85B.

The first letter is the code name of the release family, e.g. F is Froyo.

The second letter is a branch code that allows Google to identify the exact code branch that the build was made from, and R is by convention the primary release branch.

The next letter and two digits are a date code. The letter counts quarters, with A being Q1 2009. Therefore, F is Q2 2010. The two digits count days within the quarter, so F85 is June 24 2010.

Finally, the last letter identifies individual versions related to the same date code, sequentially starting with A; A is actually implicit and usually omitted for brevity.

The date code is not guaranteed to be the exact date at which a build was made, and it is common that minor variations added to an existing build re-use the same date code as that existing build.

Source Code Tags and Builds

Starting with Donut, the exact list of tags and builds is in the following table:

Build Tag Notes
DRC83 android-1.6_r1.1 earliest Donut version, ADP1, ADP2
DRC92 android-1.6_r1.2
DRD08 android-1.6_r1.3
DRD20 android-1.6_r1.4
DMD64 android-1.6_r1.5 latest Donut version
ESD20 android-2.0_r1 earliest Eclair version
ESD56 android-2.0.1_r1
ERD79 android-2.1_r1 Nexus One
ERE27 android-2.1_r2 Nexus One
EPE54B android-2.1_r2.1p Nexus One
ESE81 android-2.1_r2.1s
EPF21B android-2.1_r2.1p2 latest Eclair version
FRF85B android-2.2_r1 earliest Froyo version, Nexus One
FRF91 android-2.2_r1.1 Nexus One
FRG01B android-2.2_r1.2
FRG22D android-2.2_r1.3
FRG83 android-2.2.1_r1 Nexus One
FRG83D android-2.2.1_r2 Nexus One
FRG83G android-2.2.2_r1 Nexus One
FRK76 android-2.2.3_r1
FRK76C android-2.2.3_r2 latest Froyo version
GRH55 android-2.3_r1 earliest Gingerbread version, Nexus S
GRH78 android-2.3.1_r1 Nexus S
GRH78C android-2.3.2_r1 Nexus S
GRI40 android-2.3.3_r1 Nexus One, Nexus S
GRI54 android-2.3.3_r1.1 Nexus S
GRJ06D android-2.3.4_r0.9 Nexus S 4G
GRJ22 android-2.3.4_r1 Nexus One, Nexus S, Nexus S 4G
GRJ90 android-2.3.5_r1 Nexus S 4G
GRK39C android-2.3.6_r0.9 Nexus S
GRK39F android-2.3.6_r1 Nexus One, Nexus S
GWK74 android-2.3.7_r1 latest Gingerbread version, Nexus S 4G
ITL41D android-4.0.1_r1 earliest Ice Cream Sandwich version, Galaxy Nexus
ITL41D android-4.0.1_r1.1 Galaxy Nexus
ITL41F android-4.0.1_r1.2 Galaxy Nexus
ICL53F android-4.0.2_r1 Galaxy Nexus
IML74K android-4.0.3_r1 Nexus S
IML77 android-4.0.3_r1.1
IMM76 android-4.0.4_r1
IMM76D android-4.0.4_r1.1 Nexus S, Nexus S 4G, Galaxy Nexus
IMM76I android-4.0.4_r1.2 Galaxy Nexus
IMM76K android-4.0.4_r2 Galaxy Nexus
IMM76L android-4.0.4_r2.1 latest Ice Cream Sandwich version
JRO03C android-4.1.1_r1 earliest Jelly Bean version, Galaxy Nexus
JRO03D android-4.1.1_r1.1 Nexus 7
JRO03E android-4.1.1_r2 Nexus S
JRO03H android-4.1.1_r3
JRO03L android-4.1.1_r4 Nexus S
JRO03O android-4.1.1_r5 Galaxy Nexus
JRO03R android-4.1.1_r6 Nexus S 4G
JRO03S android-4.1.1_r6.1 Nexus 7
JZO54K android-4.1.2_r1 Nexus S, Galaxy Nexus, Nexus 7
JZO54L android-4.1.2_r2
JZO54M android-4.1.2_r2.1
JOP40C android-4.2_r1 Galaxy Nexus, Nexus 7, Nexus 4, Nexus 10
JOP40D android-4.2.1_r1 Galaxy Nexus, Nexus 7, Nexus 4, Nexus 10
JOP40F android-4.2.1_r1.1 Nexus 10
JOP40G android-4.2.1_r1.2 Nexus 4
JDQ39 android-4.2.2_r1 Galaxy Nexus, Nexus 7, Nexus 4, Nexus 10
JDQ39B android-4.2.2_r1.1 Nexus 7
JDQ39E android-4.2.2_r1.1 Nexus 4
JWR66L android-4.3_r0.9 Nexus 7
JWR66N android-4.3_r0.9.1 Galaxy Nexus, Nexus 7 (grouper/tilapia/flo), Nexus 4, Nexus 10
JWR66V android-4.3_r1 Galaxy Nexus, Nexus 7 (grouper/tilapia), Nexus 4, Nexus 10
JWR66Y android-4.3_r1.1 Galaxy Nexus, Nexus 7 (grouper/tilapia), Nexus 4, Nexus 10
JSR78D android-4.3_r2 Nexus 7 (deb)
JSS15J android-4.3_r2.1 Jelly Bean version, Nexus 7 (flo/deb)
JSS15Q android-4.3_r2.2 Jelly Bean version, Nexus 7 (flo)
JSS15R android-4.3_r2.3 Latest Jelly Bean version, Nexus 7 (flo)
JLS36C android-4.3_r3 Jelly Bean version, Nexus 7 (deb)
JLS36I android-4.3.1_r1 Latest Jelly Bean version, Nexus 7 (deb)
KRT16M android-4.4_r1 Initial KitKat version, Nexus 5 (hammerhead)
KRT16S android-4.4_r1.2 KitKat version, Nexus 7 (flo/deb/grouper/tilapia), Nexus 4, Nexus 10
KOT49E android-4.4.1_r1 KitKat version, Nexus 5, Nexus 7 (flo/deb/grouper/tilapia), Nexus 4, Nexus 10
KOT49H android-4.4.2_r1 KitKat version, Nexus 5, Nexus 7 (flo/deb/grouper/tilapia), Nexus 4, Nexus 10
KVT49L android-4.4.2_r2 Latest KitKat version, Nexus 7 (deb Verizon)

The branches froyo, gingerbread, ics-mr0, ics-mr1, jb-dev, jb-mr1-dev, jb-mr1.1-dev, jb-mr2-dev, kitkat-dev represent development branches that do not exactly match configurations that were tested by Google. They might contain a variety of changes in addition to the official tagged releases, and those haven't been as thoroughly tested.

Honeycomb GPL Modules

For Honeycomb, the entire platform source code isn't available. However, the parts of Honeycomb licensed under the GPL and LGPL are available under the following tags:

Build Tag Notes
HRI39 android-3.0_r1 earliest Honeycomb version
HRI66 android-3.0_r1.1
HWI69 android-3.0_r1.2
HRI83 android-3.0_r1.3
HMJ37 android-3.1_r1
HTJ85B android-3.2_r1
HTK55D android-3.2.1_r1
HTK75D android-3.2.1_r2
HLK75C android-3.2.2_r1
HLK75D android-3.2.2_r2
HLK75F android-3.2.4_r1
HLK75H android-3.2.6_r1 latest Honeycomb version

There is no manifest that contains exactly those. However, there are manifests that allow building those components. The following commands work for 3.0_r1.1, and using other versions can be done by switching the git checkout paramater, and if necessary the -m parameter in repo init. The git checkout command outputs an error for the non-GPL projects, where it can't find the tag in question.

$ repo init -b master -m base-for-3.0-gpl.xml
$ repo sync
$ repo forall -c git checkout android-3.0_r1.1