From b7b77135268ebd03f28b9a67a7c9bc7f44717457 Mon Sep 17 00:00:00 2001
From: sago35 <sago35@gmail.com>
Date: Wed, 29 Dec 2021 22:16:38 +0900
Subject: [PATCH] docker: update Dockerfile for xtensa-esp32-elf-ld

---
 Dockerfile | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index e40f11c3..e0f3525d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,8 +15,18 @@ FROM tinygo-llvm AS tinygo-llvm-build
 RUN cd /tinygo/ && \
     make llvm-build
 
+# tinygo-xtensa stage installs tools needed for ESP32
+FROM tinygo-llvm-build AS tinygo-xtensa
+
+ARG xtensa_version="1.22.0-80-g6c4433a-5.2.0"
+RUN cd /tmp/ && \
+    wget -q https://dl.espressif.com/dl/xtensa-esp32-elf-linux64-${xtensa_version}.tar.gz && \
+    tar xzf xtensa-esp32-elf-linux64-${xtensa_version}.tar.gz && \
+    cp ./xtensa-esp32-elf/bin/xtensa-esp32-elf-ld /usr/local/bin/ && \
+    rm -rf /tmp/xtensa*
+
 # tinygo-compiler stage builds the compiler itself
-FROM tinygo-llvm-build AS tinygo-compiler
+FROM tinygo-xtensa AS tinygo-compiler
 
 COPY . /tinygo