Introduce linux-loongarch64

.github/workflows/main.yml

@@ -763,6 +763,24 @@ jobs:
               cpython: "yes",
               cpython_arg: "--host=s390x-ibm-linux-gnu --target=s390x-ibm-linux-gnu",
             }
+          # Linux loongarch64 images
+          - {
+              image: "linux-loongarch64",
+              stockfish: "yes",
+              stockfish_arg: "ARCH=loongarch64",
+              ninja: "yes",
+              ninja_arg: "",
+              openssl: "yes",
+              openssl_arg: "linux64-loongarch64",
+              C: "yes",
+              C_arg: "",
+              C-Plus-Plus: "yes",
+              C-Plus-Plus_arg: "",
+              fmt: "yes",
+              fmt_arg: "",
+              cpython: "yes",
+              cpython_arg: "--host=loongarch64-unknown-linux-gnu --target=loongarch64-unknown-linux-gnu",
+            }
           # Linux mips images
           - {
               image: "linux-mips",

Makefile

@@ -43,7 +43,8 @@ STANDARD_IMAGES := android-arm android-arm64 android-x86 android-x86_64 \
 	linux-armv5 linux-armv5-musl linux-armv5-uclibc linux-m68k-uclibc linux-s390x linux-x64-tinycc \
 	linux-armv6 linux-armv6-lts linux-armv6-musl linux-arm64-lts linux-mipsel-lts \
 	linux-armv7l-musl linux-armv7 linux-armv7a linux-armv7-lts linux-armv7a-lts linux-x86_64-full \
-	linux-mips linux-mips-uclibc linux-mips-lts linux-ppc linux-ppc64le linux-ppc64le-lts linux-riscv64 linux-riscv32 linux-xtensa-uclibc \
+	linux-loongarch64 linux-mips linux-mips-uclibc linux-mips-lts \
+	linux-ppc linux-ppc64le linux-ppc64le-lts linux-riscv64 linux-riscv32 linux-xtensa-uclibc \
 	windows-static-x86 windows-static-x64 windows-static-x64-posix windows-armv7 \
 	windows-shared-x86 windows-shared-x64 windows-shared-x64-posix windows-arm64 \
 	bare-armv7emhf-nano_newlib
@@ -54,7 +55,8 @@ GEN_IMAGES := android-arm android-arm64 \
 	manylinux_2_28-x64 manylinux_2_34-x64 \
 	manylinux2014-x64 manylinux2014-x86 \
 	manylinux2014-aarch64 manylinux_2_28-aarch64 manylinux_2_34-aarch64 linux-arm64-lts \
-	web-wasm web-wasi web-wasi-emulated-threads web-wasi-threads linux-mips linux-mips-uclibc linux-mips-lts windows-arm64 windows-armv7 \
+	web-wasm web-wasi web-wasi-emulated-threads web-wasi-threads \
+	linux-loongarch64 linux-mips linux-mips-uclibc linux-mips-lts windows-arm64 windows-armv7 \
 	windows-static-x86 windows-static-x64 windows-static-x64-posix \
 	windows-shared-x86 windows-shared-x64 windows-shared-x64-posix \
 	linux-armv7 linux-armv7a linux-armv7l-musl linux-armv7-lts linux-armv7a-lts linux-x86_64-full \

README.md

@@ -103,6 +103,7 @@ The dockcross script will execute the given command-line inside the container, a
 | dockcross/linux-armv7-lts | ARMv7 | GCC 8.5.0 + Glibc 2.28 | Linux |
 | dockcross/linux-armv7a | ARMv7a | GCC | Linux |
 | dockcross/linux-armv7l-musl | ARMv7l | GCC + musl | Linux |
+| dockcross/linux-loongarch64 | LoongArch64 | GCC | Linux |
 | dockcross/linux-mips | mips | GCC | Linux |
 | dockcross/linux-mips-uclibc | mips | GCC + uclibc | Linux |
 | dockcross/linux-mips-lts | mips | GCC 8.5.0 + Glibc 2.28 | Linux |
@@ -283,6 +284,12 @@ board PC with TI SoC AM3358 on board, Cortex-A8.
 Toolchain configured for ARMv7-L, using
 [musl](https://www.musl-libc.org/) as base \"libc\".
 
+### dockcross/linux-loongarch64
+
+![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-loongarch64/latest) ![Docker Pulls](https://img.shields.io/docker/pulls/dockcross/linux-loongarch64)
+
+Generic Linux LoongArch64 cross compiler toolchain.
+
 ### dockcross/linux-mips
 
 ![Docker Image Size (tag)](https://img.shields.io/docker/image-size/dockcross/linux-mips/latest) ![Docker Pulls](https://img.shields.io/docker/pulls/dockcross/linux-mips)

linux-loongarch64/Dockerfile.in

@@ -0,0 +1,43 @@
+ARG ORG=dockcross
+FROM ${ORG}/base:latest
+
+LABEL maintainer="Gleb Popov arrowd@FreeBSD.org"
+
+# Crosstool-ng version 2025-09-07
+ENV CT_VERSION=crosstool-ng-1.28.0
+
+#include "common.crosstool"
+
+# The cross-compiling emulator
+RUN apt-get update \
+&& apt-get install -y \
+  qemu-user \
+  qemu-user-static \
+&& apt-get clean --yes
+
+# The CROSS_TRIPLE is a configured alias of the "loongarch64-unknown-linux-gnu" target.
+ENV CROSS_TRIPLE=loongarch64-unknown-linux-gnu
+
+ENV CROSS_ROOT=${XCC_PREFIX}/${CROSS_TRIPLE}
+ENV AS=${CROSS_ROOT}/bin/${CROSS_TRIPLE}-as \
+    AR=${CROSS_ROOT}/bin/${CROSS_TRIPLE}-ar \
+    CC=${CROSS_ROOT}/bin/${CROSS_TRIPLE}-gcc \
+    CPP=${CROSS_ROOT}/bin/${CROSS_TRIPLE}-cpp \
+    CXX=${CROSS_ROOT}/bin/${CROSS_TRIPLE}-g++ \
+    LD=${CROSS_ROOT}/bin/${CROSS_TRIPLE}-ld \
+    FC=${CROSS_ROOT}/bin/${CROSS_TRIPLE}-gfortran
+
+ENV QEMU_LD_PREFIX="${CROSS_ROOT}/${CROSS_TRIPLE}/sysroot"
+ENV QEMU_SET_ENV="LD_LIBRARY_PATH=${CROSS_ROOT}/lib:${QEMU_LD_PREFIX}"
+
+COPY Toolchain.cmake /usr/lib/${CROSS_TRIPLE}/
+ENV CMAKE_TOOLCHAIN_FILE=/usr/lib/${CROSS_TRIPLE}/Toolchain.cmake
+
+ENV PKG_CONFIG_PATH=/usr/lib/loongarch64-unknown-linux-gnu/pkgconfig
+
+# Linux kernel cross compilation variables
+ENV PATH=${PATH}:${CROSS_ROOT}/bin
+ENV CROSS_COMPILE=${CROSS_TRIPLE}-
+ENV ARCH=loongarch64
+
+#include "common.label-and-env"

linux-loongarch64/Toolchain.cmake

@@ -0,0 +1,20 @@
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_VERSION 1)
+set(CMAKE_SYSTEM_PROCESSOR loongarch64)
+
+set(cross_triple $ENV{CROSS_TRIPLE})
+set(cross_root $ENV{CROSS_ROOT})
+
+set(CMAKE_C_COMPILER $ENV{CC})
+set(CMAKE_CXX_COMPILER $ENV{CXX})
+set(CMAKE_Fortran_COMPILER $ENV{FC})
+
+set(CMAKE_CXX_FLAGS "-I ${cross_root}/include/")
+
+list(APPEND CMAKE_FIND_ROOT_PATH ${CMAKE_PREFIX_PATH} ${cross_root} ${cross_root}/${cross_triple})
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+set(CMAKE_SYSROOT ${cross_root}/${cross_triple}/sysroot)
+
+set(CMAKE_CROSSCOMPILING_EMULATOR /usr/bin/qemu-loongarch64)