Merge pull request #1 from memfault/noahp/build-cache

Set an in-tree platformio build cache

Author: noahp

.gitignore

@@ -7,3 +7,4 @@ managed_components/
 dependencies.lock
 sdkconfig.espidf
 sdkconfig
+/.build_cache

platformio.ini

@@ -13,7 +13,7 @@ platform = espressif32
 board = esp32-c3-devkitc-02
 
 ; needed to tell Memfault that we are using a platformIO project
-board_build.cmake_extra_args = 
+board_build.cmake_extra_args =
 	-DPLATFORMIO_ENABLED=TRUE
 
 ; add linker fragment needed for ESP-IDF projects
@@ -43,3 +43,7 @@ build_flags =
   -Isrc/memfault/memfault-firmware-sdk/components/include
   -include src/memfault/memfault-firmware-sdk/ports/include/memfault/ports/freertos_trace.h
 
+
+[platformio]
+; Set a path to a cache folder
+build_cache_dir = .build_cache