Install dlfcn

.github/workflows/dlfcn_install.yml

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+name: dlfcn-install
+
+on:
+  workflow_dispatch:
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        include:
+          - os: windows-latest
+            python-version: "3.10"
+      fail-fast: false
+    steps:
+    # - uses: actions/checkout@master
+    #   with:
+    #     name: dlfcn-win32/dlfcn-win32
+    #     ref: refs/heads/release
+
+    - uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - uses: awvwgk/setup-fortran@main
+      id: setup-fortran
+      with:
+        compiler: gcc
+        version: 11
+
+    - run: gcc -v -o hello.exe hello.c
+
+    - run: |
+        curl -LJO https://github.com/dlfcn-win32/dlfcn-win32/archive/refs/heads/master.zip
+        unzip dlfcn-win32-master.zip
+        python -m pip install --upgrade pip
+        python -m pip install cmake
+    - run: >    
+        cmake -S ./dlfcn-win32-master -B ./build_dlfcn -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Release
+        -DCMAKE_INSTALL_PREFIX="/c/ProgramData/Chocolatey/lib/mingw/tools/install/mingw64"
+    - run: |  
+        cmake --build ./build_dlfcn
+        cmake --install ./build_dlfcn   
+
+    # - uses: actions/checkout@v3
+    #   with:
+    #     submodules: true
+
+    # - uses: actions/setup-python@v2
+    #   with:
+    #     python-version: ${{ matrix.python-version }}
+    # - uses: awvwgk/setup-fortran@main
+    #   id: setup-fortran
+    #   with:
+    #     compiler: gcc
+    #     version: 11
+    # - run: python -m pip install --upgrade pip
+    # - run: python -m pip install cmake
+    # - run: curl -L
+
+

hello.c

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+// hello.c
+#include <stdio.h>
+
+int main() {
+    printf("Hello, world!\n");
+    return 0;
+}