# Using CMake Templates

You can use CMake templates in a cross-compilation environment
or from BitBake recipes.

## Using CMake Templates in a Cross-Compilation Environment

Beginning with the `Grumpy Guppy`, version 7, the CMakeAfbTemplates CMake module
is installed by default in the SDKs supplied by AGL.
Consequently, you do not need to take steps to install the modules.

Following are links to the latest SDKs on the AGL master branch:

* [dra7xx-evm](https://download.automotivelinux.org/AGL/snapshots/master/latest/dra7xx-evm/deploy/sdk/)
* [dragonboard-410c](https://download.automotivelinux.org/AGL/snapshots/master/latest/dragonboard-410c/deploy/sdk/)
* [intel-corei7-64](https://download.automotivelinux.org/AGL/snapshots/master/latest/intel-corei7-64/deploy/sdk/)
* [m3ulcb-nogfx](https://download.automotivelinux.org/AGL/snapshots/master/latest/m3ulcb-nogfx/deploy/sdk/)
* [qemux86-64](https://download.automotivelinux.org/AGL/snapshots/master/latest/qemux86-64/deploy/sdk/)
* [raspberrypi3](https://download.automotivelinux.org/AGL/snapshots/master/latest/raspberrypi3/deploy/sdk/)

## Using CMake Templates from BitBake Recipes

If you have developed an application and you want to include it in an AGL image,
you must add a BitBake recipe in one of the following layers:

* [meta-agl](https://gerrit.automotivelinux.org/gerrit/#/admin/projects/AGL/meta-agl):
 meta-agl layer (core AGL)
* [meta-agl-cluster-demo](https://gerrit.automotivelinux.org/gerrit/#/admin/projects/AGL/meta-agl-cluster-demo):
 cluster demo specific recipes and configuration
* [meta-agl-demo](https://gerrit.automotivelinux.org/gerrit/#/admin/projects/AGL/meta-agl-demo):
 meta-agl-demo layer (demo/staging/"one-shot")
* [meta-agl-devel](https://gerrit.automotivelinux.org/gerrit/#/admin/projects/AGL/meta-agl-devel):
 meta-agl-devel (Development and Community BSPs)
* [meta-agl-extra](https://gerrit.automotivelinux.org/gerrit/#/admin/projects/AGL/meta-agl-extra):
 meta-agl-extra (additional/optional components for AGL)

Once you have the recipe in place, edit it to include the following
line to cause the `aglwgt` class to be inherited:

```bb
inherit aglwgt
```

Following is an example that uses the HVAC application recipe (i.e. `hvac.bb`), which
builds the HVAC application:

```bb
SUMMARY     = "HVAC Service Binding"
DESCRIPTION = "AGL HVAC Service Binding"
HOMEPAGE    = "https://gerrit.automotivelinux.org/gerrit/#/admin/projects/apps/agl-service-hvac"
SECTION     = "apps"

LICENSE     = "Apache-2.0"
LIC_FILES_CHKSUM = "file://LICENSE;md5=ae6497158920d9524cf208c09cc4c984"

SRC_URI = "gitsm://gerrit.automotivelinux.org/gerrit/apps/agl-service-hvac;protocol=https;branch=${AGL_BRANCH}"
SRCREV  = "${AGL_APP_REVISION}"

PV = "1.0+git${SRCPV}"
S  = "${WORKDIR}/git"

DEPENDS = "json-c"
RDEPENDS_${PN} += "agl-service-identity-agent"

inherit cmake aglwgt pkgconfig
```

The following links provide more examples of recipes that use the
CMake templates:

* [helloworld-service](https://github.com/iotbzh/helloworld-service)
* [agl-service-audio-4a](https://gerrit.automotivelinux.org/gerrit/#/admin/projects/apps/agl-service-audio-4a)
* [agl-service-unicens](https://gerrit.automotivelinux.org/gerrit/#/admin/projects/apps/agl-service-unicens)
* [4a-hal-unicens](https://gerrit.automotivelinux.org/gerrit/#/admin/projects/src/4a-hal-unicens)