diff --git a/.gitea/workflows/linux-mips64-gcc.yml b/.gitea/workflows/linux-mips64-gcc.yml
new file mode 100644
index 0000000..21b176d
--- /dev/null
+++ b/.gitea/workflows/linux-mips64-gcc.yml
@@ -0,0 +1,82 @@
+---
+name: linux-mips64-gcc
+on:
+  push:
+    paths:
+      - .gitea/workflows/linux-mips64-gcc.yml
+      - toolchains/mips64el-linux-gnuabi64.toolchain.cmake
+      - 3party/**
+      - include/**
+      - src/**
+      - tests/**
+      - CMakeLists.txt
+      - cmake/**
+  pull_request:
+    paths:
+      - .gitea/workflows/linux-mips64-gcc.yml
+      - toolchains/mips64el-linux-gnuabi64.toolchain.cmake
+      - 3party/**
+      - include/**
+      - src/**
+      - tests/**
+      - CMakeLists.txt
+      - cmake/**
+concurrency:
+  group: linux-mips64-gcc-${{ github.ref }}
+  cancel-in-progress: true
+permissions: [read]
+jobs:
+  linux-gcc-mips64el:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: true
+      - name: cache-qemu
+        id: cache-qemu
+        uses: actions/cache@v3
+        with:
+          path: qemu-install
+          key: qemu-mips64el-install-20220502-2
+      - name: checkout-qemu
+        # uses: actions/checkout@v4
+        if: steps.cache-qemu.outputs.cache-hit != 'true'
+        run: |
+          mkdir qemu && cd qemu
+          git init
+          git remote add origin https://gitlab.com/qemu-project/qemu.git
+          git fetch --depth=1 origin f5643914a9e8f79c606a76e6a9d7ea82a3fc3e65
+          git checkout f5643914a9e8f79c606a76e6a9d7ea82a3fc3e65          
+      - name: install-qemu-build-deps
+        if: steps.cache-qemu.outputs.cache-hit != 'true'
+        run: |
+          sudo apt-get update -y
+          sudo apt-get install -y autoconf automake autotools-dev ninja-build          
+      - name: qemu
+        if: steps.cache-qemu.outputs.cache-hit != 'true'
+        run: |
+          cd $GITHUB_WORKSPACE/qemu
+          ./configure --target-list=mips64el-linux-user --prefix=$GITHUB_WORKSPACE/qemu-install
+          make -j `nproc`
+          make install          
+      - name: set-qemu-cache
+        uses: actions/cache/save@v3
+        if: steps.cache-qemu.outputs.cache-hit != 'true'
+        with:
+          key: qemu-mips64el-install-20220502-2
+          path: qemu-install
+      - name: mips64el-gnuabi64-toolchain
+        run: |
+          sudo apt-get update -y
+          sudo apt-get install -y cmake make g++-mips64el-linux-gnuabi64          
+      - name: configure
+        run: |
+          mkdir build && cd build
+          cmake .. -DULIB_BUILD_TESTS=ON -DCMAKE_TOOLCHAIN_FILE=../toolchains/mips64el-linux-gnuabi64.toolchain.cmake -DCMAKE_CROSSCOMPILING_EMULATOR="qemu-mips64el;-L;/usr/mips64el-linux-gnuabi64"          
+      - name: build
+        run: cmake --build build --target all -j `nproc`
+      - name: test
+        run: |-
+          export PATH=$GITHUB_WORKSPACE/qemu-install/bin:$PATH
+          cd build 
+          ctest --output-on-failure -j`nproc`
diff --git a/toolchains/mips64el-linux-gnuabi64.toolchain.cmake b/toolchains/mips64el-linux-gnuabi64.toolchain.cmake
new file mode 100644
index 0000000..62e188b
--- /dev/null
+++ b/toolchains/mips64el-linux-gnuabi64.toolchain.cmake
@@ -0,0 +1,30 @@
+set(CMAKE_CROSSCOMPILING TRUE)
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR mips64el)
+
+set(CMAKE_C_COMPILER "mips64el-linux-gnuabi64-gcc")
+set(CMAKE_CXX_COMPILER "mips64el-linux-gnuabi64-g++")
+
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PROGRAM)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_LIBRARY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_INCLUDE)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+if(NOT CMAKE_FIND_ROOT_PATH_MODE_PACKAGE)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+endif()
+
+set(CMAKE_C_FLAGS "-march=mips64")
+set(CMAKE_CXX_FLAGS "-march=mips64")
+
+# cache flags
+set(CMAKE_C_FLAGS
+    "${CMAKE_C_FLAGS}"
+    CACHE STRING "c flags")
+set(CMAKE_CXX_FLAGS
+    "${CMAKE_CXX_FLAGS}"
+    CACHE STRING "c++ flags")