Basic libmad build

tools/cmake/common.cmake

@@ -0,0 +1,27 @@
+# For more information about build system see
+# https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+# Build only the subset of components that we actually depend on.
+set(COMPONENTS "")
+
+# External dependencies
+list(APPEND EXTRA_COMPONENT_DIRS "$ENV{PROJ_PATH}/lib/result")
+list(APPEND EXTRA_COMPONENT_DIRS "$ENV{PROJ_PATH}/lib/lvgl")
+list(APPEND EXTRA_COMPONENT_DIRS "$ENV{PROJ_PATH}/lib/catch2")
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+
+# Additional warnings used when compiling our components.
+# Unable to be used due to issues in ESP-IDF includes are: -Wpedantic
+# -Wuseless-cast -Wconversion -Wold-style-cast -Wsign-conversion -Wcast-align
+set(EXTRA_WARNINGS "-Wshadow" "-Wnon-virtual-dtor" "-Wunused"
+  "-Woverloaded-virtual" "-Wmisleading-indentation" "-Wduplicated-cond"
+  "-Wduplicated-branches" "-Wlogical-op" "-Wnull-dereference"
+  "-Wdouble-promotion" "-Wformat=2" "-Wimplicit-fallthrough")
+
+# Extra build flags that should apply to the entire build. This should mostly
+# just be used to setting flags that our external dependencies requires.
+# Otherwise, prefer adding per-component build flags to keep things neat.
+idf_build_set_property(COMPILE_OPTIONS "-DLV_CONF_INCLUDE_SIMPLE" APPEND)