[gn] introduce build_root variable (#4352)
* [gn] introduce build_root variable
* [nrfconnect] build from CHIP root directory
* [pigweed] bump version
* [nrfconnect] ensure the minimum gn version is installed
* Restyled by gn
Co-authored-by: Restyled.io <commits@restyled.io>
diff --git a/config/standalone/toolchain/BUILD.gn b/config/standalone/toolchain/BUILD.gn
index 5c745a8..8e9160f 100644
--- a/config/standalone/toolchain/BUILD.gn
+++ b/config/standalone/toolchain/BUILD.gn
@@ -12,9 +12,10 @@
# See the License for the specific language governing permissions and
# limitations under the License.
+import("//build_overrides/build.gni")
import("//build_overrides/chip.gni")
-import("//build/toolchain/gcc_toolchain.gni")
+import("${build_root}/toolchain/gcc_toolchain.gni")
gcc_toolchain("standalone") {
toolchain_args = {
