cmake: fix pthread linking on Windows

.github/workflows/c-cpp.yml

@@ -57,6 +57,7 @@ jobs:
           ${{ matrix.environment.prefix }}-zlib
           ${{ matrix.environment.prefix }}-libpng
           ${{ matrix.environment.prefix }}-libvncserver
+          ${{ matrix.environment.prefix }}-winpthreads
     - uses: actions/checkout@v2
     - name: make
       run: make -fwin/makefile.mingw -j DEV_BUILD=${{ matrix.dev-build }} NEW_DYNAREC=${{ matrix.new-dynarec }} X64=${{ matrix.environment.x64 }} CLANG=${{ matrix.clang }} VNC=n

.github/workflows/cmake.yml

@@ -62,13 +62,16 @@ jobs:
         msystem: ${{ matrix.environment.msystem }}
         install: >-
           ${{ matrix.environment.prefix }}-ninja
-          ${{ matrix.environment.prefix }}-toolchain
+          ${{ matrix.environment.prefix }}-gcc
+          ${{ matrix.environment.prefix }}-clang
+          ${{ matrix.environment.prefix }}-pkg-config
           ${{ matrix.environment.prefix }}-openal
           ${{ matrix.environment.prefix }}-freetype
           ${{ matrix.environment.prefix }}-SDL2
           ${{ matrix.environment.prefix }}-zlib
           ${{ matrix.environment.prefix }}-libpng
           ${{ matrix.environment.prefix }}-libvncserver
+          ${{ matrix.environment.prefix }}-winpthreads
     - uses: actions/checkout@v2
     - name: Configure CMake
       run: >-