| Arman Uguray | 0ca9905 | 2015-07-07 17:00:09 -0700 | [diff] [blame] | 1 | Building with GN+ninja |
| 2 | ====================== |
| 3 | |
| 4 | system/bt is buildable using the GN and and ninja buildtools from the Chromium |
| 5 | project. After setting up these tools, several third_party packages need to be |
| 6 | set up to build the stack. It's a simple matter of copying (or sym-linking) some |
| 7 | packages out of AOSP into "system/bt/third_party": |
| 8 | |
| 9 | From AOSP: |
| 10 | 1. "platform/external/libevent" => third_party/libevent. The relevant |
| 11 | headers here are "event.h" and "event-config.h". event-config.h from |
| 12 | external/libevent is only compatible on Android; this means that you will need |
| 13 | to generate a new one based on the current platform. Please follow the |
| 14 | instructions in external/libevent/README.android for instructions on how to |
| 15 | generate this file. |
| 16 | 2. "platform/external/libchrome" => third_party/libchrome. After that, remove |
| 17 | the BUILD.gn file that's in libchrome/base. This is a legacy file that only |
| 18 | works inside the Chromium project and we're using our own from secondary build |
| 19 | sources. |
| 20 | 3. "platform/external/modp_b64" => third_party/modp_b64 |
| 21 | 4. "platform/external/tinyxml2" => third_party/tinyxml2 |
| 22 | |
| 23 | From Chromium: |
| 24 | 1. "src/testing/gtest" => third_party/gtest |
| 25 | |
| 26 | You will also need a fresh checkout of platform/hardware/libhardware and |
| 27 | platform/system/core for some include dependencies. |
| 28 | |
| 29 | BUILD.gn files for all of these packages have already been set up under |
| 30 | "system/bt/build/secondary/third_party" (note: we don't have a BUILD.gn file for |
| 31 | modp_b64 since it comes with its own; as the package was imported into AOSP from |
| 32 | Chromium). To build, run: |
| 33 | |
| 34 | 1. 'gn args out/Default': This will prompt you to fill the contents of your |
| 35 | "args.gn" file. Set the two following variables: |
| 36 | a. libhw_include_path=<path to your "platform/hardware/libhardware/include"> |
| 37 | b. core_include_path=<path to your "platform/system/core/include"> |
| 38 | |
| 39 | Once done, this will create the *.ninja files for the entire project. |
| 40 | |
| 41 | 2. 'ninja -C out/Default all': This will build all targets (the shared library, |
| 42 | executables, tests, etc) and put them in out/Default (or whatever you named the |
| 43 | output directory. To build an individual target, replace "all" with the target |
| 44 | of your choice, e.g. 'ninja -C out/Default net_test_osi'. |