Status of Bluetooth for ESP32

I've pulled the ESP32 and attempted a compile. It errors out with:

xtensa-esp32-elf-gcc: error: unrecognized command line option '-mfix-esp32-psram-cache-issue'

make clean && BOARD=ESP32 RELEASE=1 make
Cleaning targets
Generating platform configs
Generating pin info
Generating JS wrappers
WRAPPERSOURCES = src/jswrap_array.c src/jswrap_arraybuffer.c src/jswrap_dataview.c src/jswrap_date.c src/jswrap_error.c src/jswrap_espruino.c src/jswrap_flash.c src/jswrap_functions.c src/jswrap_interactive.c src/jswrap_io.c src/jswrap_json.c src/jswrap_modules.c src/jswrap_pin.c src/jswrap_number.c src/jswrap_object.c src/jswrap_onewire.c src/jswrap_pipe.c src/jswrap_process.c src/jswrap_promise.c src/jswrap_regexp.c src/jswrap_serial.c src/jswrap_storage.c src/jswrap_spi_i2c.c src/jswrap_stream.c src/jswrap_string.c src/jswrap_waveform.c libs/filesystem/jswrap_fs.c libs/filesystem/jswrap_file.c libs/math/jswrap_math.c libs/graphics/jswrap_graphics.c libs/network/jswrap_net.c libs/network/http/jswrap_http.c libs/network/js/jswrap_jsnetwork.c libs/network/jswrap_wifi.c libs/network/esp32/jswrap_esp32_network.c targets/esp32/jswrap_esp32.c libs/network/telnet/jswrap_telnet.c libs/crypto/jswrap_crypto.c libs/neopixel/jswrap_neopixel.c
DEFINES = -DGIT_COMMIT=46d6a12 -DNO_ASSERT -DRELEASE -DBUILDNUMBER="40" -DESP_PLATFORM -DESP32=1 -DUSE_DEBUGGER -DUSE_TAB_COMPLETE -DUSE_HEATSHRINK -DUSE_FILESYSTEM -DUSE_FLASHFS -DUSE_MATH -DUSE_GRAPHICS -DUSE_NET -DUSE_ESP32 -DUSE_TELNET -DUSE_CRYPTO -DUSE_TLS -DUSE_AES -DUSE_NEOPIXEL -DESP32 -DEMBEDDED
CC libs/compression/heatshrink/heatshrink_encoder.o
xtensa-esp32-elf-gcc: error: unrecognized command line option '-mfix-esp32-psram-cache-issue'
make: *** [libs/compression/heatshrink/heatshrink_encoder.o] Error 1

So it looks like a new tool chain is required.

@jumjum Are you using ESP-IDF Pre-release 3.0-rc1 ?
https://github.com/espressif/esp-idf/releases

Shall I start an issue on git hub so we can continue this conversation there?