dist/tools/esptools: add support for installing esp8266 toolchain

cpu/esp32/doc.txt

@@ -486,7 +486,7 @@ toolchain (Debian/Ubuntu package names):
 The shell script `$RIOTBASE/dist/tools/esptools/install.sh` is used to
 install Espressif's precompiled versions of the following tools:
 
-- ESP32 vendor toolchain (for ESP32, ESP32-S2, ESP32-S3 and ESP32-C3)
+- ESP32 vendor toolchain (for ESP8266, ESP32, ESP32-S2, ESP32-S3 and ESP32-C3)
 - GDB for ESP32x SoCs based on Xtensa or RISC-V
 - OpenOCD for ESP32 (for ESP32, ESP32-S2, ESP32-S3 and ESP32-C3)
 - QEMU for ESP32 (only for ESP32)
@@ -499,7 +499,7 @@ $ dist/tools/esptools/install.sh
 
 Usage: install.sh <tool>
        install.sh gdb <platform>
-<tool> = all | esp32 | esp32c3 | esp32s2 | esp32s3 | gdb | openocd | qemu
+<tool> = all | esp8266 | esp32 | esp32c3 | esp32s2 | esp32s3 | gdb | openocd | qemu
 <platform> = xtensa | riscv
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 

cpu/esp8266/doc.txt

@@ -308,7 +308,7 @@ system using the `BUILD_IN_DOCKER` variable:
 
 ## Manual Toolchain Installation {#esp8266_manual_toolchain_installation}
 
-A more difficult way to install the toolchain is the manual installation of
+A more simple way to install the toolchain is the manual installation of
 all required components as described below.
 
 @note To install the toolchain manually, a 64-bit Linux system is required.
@@ -325,17 +325,18 @@ The Xtensa GCC compiler for ESP8266 configured for use with RIOT-OS can
 be downloaded and installed as precompiled binary archive from
 [GitHub](https://github.com/gschorcht/xtensa-esp8266-elf):
 
+The shell script `$RIOTBASE/dist/tools/esptools/install.sh` is used to
+install the custom ESP8266 toolchain:
+
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-mkdir -p $HOME/esp
-cd $HOME/esp
-git clone https://github.com/gschorcht/xtensa-esp8266-elf
+$ dist/tools/esptools/install.sh esp8266
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Once the compiler is installed, you have to expand your `PATH` variable by
 the directory with Xtensa GCC binaries:
 
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-export PATH=$HOME/esp/xtensa-esp8266-elf/bin:$PATH
+$ . dist/tools/esptools/export.sh esp8266
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 [Back to table of contents](#esp8266_toc)

dist/tools/esptools/export.sh

@@ -1,6 +1,7 @@
 #!/bin/sh
 
 ESP32_GCC_RELEASE="esp-12.2.0_20230208"
+ESP8266_GCC_RELEASE="esp-5.2.0_20191018"
 
 ESP32_OPENOCD_VERSION="v0.12.0-esp32-20230313"
 
@@ -13,6 +14,10 @@
 export_arch()
 {
     case $1 in
+        esp8266)
+            TARGET_ARCH="xtensa-esp8266-elf"
+            ESP32_GCC_RELEASE=${ESP8266_GCC_RELEASE}
+            ;;
         esp32)
             TARGET_ARCH="xtensa-esp32-elf"
             ;;
@@ -31,20 +36,29 @@
     esac
 
     TOOLS_DIR="${TOOLS_PATH}/${TARGET_ARCH}/${ESP32_GCC_RELEASE}/${TARGET_ARCH}"
     TOOLS_DIR_IN_PATH="$(echo $PATH | grep "${TOOLS_DIR}")"
 
-    if [ -e "${TOOLS_DIR}" ] && [ -z "${TOOLS_DIR_IN_PATH}" ]; then
+    if [ ! -e "${TOOLS_DIR}" ]; then
+        echo "${TOOLS_DIR} does not exist - please run"
+        echo $(echo $0 | sed 's/export/install/') $1
+        exit 1
+    fi
+
+    if [ -z "${TOOLS_DIR_IN_PATH}" ]; then
         echo "Extending PATH by ${TOOLS_DIR}/bin"
         export PATH="${TOOLS_DIR}/bin:${PATH}"
     fi
 
+    echo "To make this permanent, add this line to your ~/.bashrc or ~/.profile:"
+    echo PATH="\$PATH:${TOOLS_DIR}/bin"
+
     unset TOOLS_DIR
 }
 
 export_openocd()
 {
     TOOLS_DIR="${TOOLS_PATH}/openocd-esp32/${ESP32_OPENOCD_VERSION}"
     TOOLS_DIR_IN_PATH="$(echo $PATH | grep "${TOOLS_DIR}")"
     OPENOCD_DIR="${TOOLS_DIR}/openocd-esp32"
 
     if [ -e "${OPENOCD_DIR}" ] && [ -z "${TOOLS_DIR_IN_PATH}" ]; then
@@ -67,7 +81,7 @@
     # map different platform names to a unique OS name
     case "${PLATFORM}" in
         linux-amd64|linux64|Linux-x86_64|FreeBSD-amd64)
             OS="linux-amd64"
             ;;
         *)
             echo "error: OS architecture ${PLATFORM} not supported"
@@ -87,7 +101,7 @@
     fi
 
     TOOLS_DIR="${TOOLS_PATH}/qemu-esp32/${ESP32_QEMU_VERSION}/qemu"
     TOOLS_DIR_IN_PATH="$(echo $PATH | grep "${TOOLS_DIR}")"
 
     if [ -e "${TOOLS_DIR}" ] && [ -z "${TOOLS_DIR_IN_PATH}" ]; then
         echo "Extending PATH by ${TOOLS_DIR}/bin"
@@ -114,7 +128,7 @@
     GDB_VERSION="12.1_20221002"
 
     TOOLS_DIR="${TOOLS_PATH}/${GDB_ARCH}/${GDB_VERSION}/${GDB_ARCH}"
     TOOLS_DIR_IN_PATH="$(echo $PATH | grep "${TOOLS_DIR}")"
 
     if [ -e "${TOOLS_DIR}" ] && [ -z "${TOOLS_DIR_IN_PATH}" ]; then
         echo "Extending PATH by ${TOOLS_DIR}/bin"
@@ -130,7 +144,7 @@
     echo "<tool> = all | esp32 | esp32c3 | esp32s2 | esp32s3 | gdb | openocd | qemu"
     echo "<platform> = xtensa | riscv"
 elif [ "$1" = "all" ]; then
-    ARCH_ALL="esp32 esp32c3 esp32s2 esp32s3"
+    ARCH_ALL="esp8266 esp32 esp32c3 esp32s2 esp32s3"
     for arch in ${ARCH_ALL}; do
         export_arch "$arch"
     done
@@ -151,7 +165,7 @@
 elif [ "$1" = "qemu" ]; then
     export_qemu
 else
     export_arch $1
 fi
 
 unset ESP32_GCC_RELEASE

dist/tools/esptools/install.sh

@@ -1,9 +1,11 @@
 #!/bin/sh
 
 ESP32_GCC_RELEASE="esp-12.2.0_20230208"
 ESP32_GCC_VERSION_DIR="12.2.0"
 ESP32_GCC_VERSION_DOWNLOAD="12.2.0_20230208"
 
+ESP8266_GCC_RELEASE="esp-5.2.0_20191018"
+
 ESP32_OPENOCD_VERSION="v0.12.0-esp32-20230313"
 ESP32_OPENOCD_VERSION_TGZ="0.12.0-esp32-20230313"
 
@@ -84,6 +86,10 @@
 install_arch()
 {
     case "$1" in
+        esp8266)
+            TARGET_ARCH="xtensa-esp8266-elf"
+            ESP32_GCC_RELEASE=${ESP8266_GCC_RELEASE}
+            ;;
         esp32)
             TARGET_ARCH="xtensa-esp32-elf"
             ;;
@@ -103,19 +109,23 @@
 
     TOOLS_DIR="${TOOLS_PATH}/${TARGET_ARCH}/${ESP32_GCC_RELEASE}"
 
-    URL_PATH="https://github.com/espressif/crosstool-NG/releases/download"
-    URL_TGZ="${TARGET_ARCH}-${ESP32_GCC_VERSION_DOWNLOAD}-${OS}.tar.xz"
-    URL="${URL_PATH}/${ESP32_GCC_RELEASE}/${URL_TGZ}"
-
-    echo "Creating directory ${TOOLS_DIR} ..." && \
-    mkdir -p "${TOOLS_DIR}" && \
-    cd "${TOOLS_DIR}" && \
-    echo "Downloading ${URL_TGZ} ..." && \
-    download "${URL}" "${URL_TGZ}" && \
-    echo "Extracting ${URL_TGZ} in ${TOOLS_DIR} ..." && \
-    tar xfJ "${URL_TGZ}" && \
-    echo "Removing ${URL_TGZ} ..." && \
-    rm -f "${URL_TGZ}" && \
+    if [ "$1" = "esp8266" ]; then
+        git clone https://github.com/gschorcht/xtensa-esp8266-elf ${TOOLS_DIR}/${TARGET_ARCH}
+    else
+        URL_PATH="https://github.com/espressif/crosstool-NG/releases/download"
+        URL_TGZ="${TARGET_ARCH}-${ESP32_GCC_VERSION_DOWNLOAD}-${OS}.tar.xz"
+        URL="${URL_PATH}/${ESP32_GCC_RELEASE}/${URL_TGZ}"
+
+        echo "Creating directory ${TOOLS_DIR} ..." && \
+        mkdir -p "${TOOLS_DIR}" && \
+        cd "${TOOLS_DIR}" && \
+        echo "Downloading ${URL_TGZ} ..." && \
+        download "${URL}" "${URL_TGZ}" && \
+        echo "Extracting ${URL_TGZ} in ${TOOLS_DIR} ..." && \
+        tar xfJ "${URL_TGZ}" && \
+        echo "Removing ${URL_TGZ} ..." && \
+        rm -f "${URL_TGZ}"
+    fi
     echo "$1 toolchain installed in ${TOOLS_DIR}/$TARGET_ARCH"
 }
 
@@ -214,11 +224,11 @@
 if [ -z "$1" ]; then
     echo "Usage: install.sh <tool>"
     echo "       install.sh gdb <platform>"
-    echo "<tool> = all | esp32 | esp32c3 | esp32s2 | esp32s3 | gdb | openocd | qemu"
+    echo "<tool> = all | esp8266 | esp32 | esp32c3 | esp32s2 | esp32s3 | gdb | openocd | qemu"
     echo "<platform> = xtensa | riscv"
     exit 1
 elif [ "$1" = "all" ]; then
-    ARCH_ALL="esp32 esp32c3 esp32s2 esp32s3"
+    ARCH_ALL="esp8266 esp32 esp32c3 esp32s2 esp32s3"
     for arch in ${ARCH_ALL}; do
         install_arch "$arch"
     done
@@ -241,4 +251,4 @@
 fi
 
 echo "Use following command to extend the PATH variable:"
-echo ". $(dirname "$0")/export.sh"
+echo ". $(dirname "$0")/export.sh $1"