diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4ce8221..df1ff52 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -20,27 +20,7 @@ jobs:
     - name: libdwarf
       run: |
            cd ..
-           mkdir zstd
-           cd zstd
-           git init
-           git remote add origin https://github.com/facebook/zstd.git
-           git fetch --depth 1 origin 63779c798237346c2b245c546c40b72a5a5913fe # 1.5.5
-           git checkout FETCH_HEAD
-           make -j
-           sudo make install
-           cd ..
-           mkdir libdwarf
-           cd libdwarf
-           git init
-           git remote add origin https://github.com/jeremy-rifkin/libdwarf-lite.git
-           git fetch --depth 1 origin 5c0cb251f94b27e90184e6b2d9a0c9c62593babc
-           git checkout FETCH_HEAD
-           mkdir build
-           cd build
-           cmake .. -DPIC_ALWAYS=TRUE -DBUILD_DWARFDUMP=FALSE
-           make -j
-           sudo make install
-           cd ../../cpptrace
+           cpptrace/ci/setup-prerequisites.sh
     - name: build
       run: |
            python3 ci/build-in-all-configs.py --${{matrix.compiler}}
@@ -58,27 +38,7 @@ jobs:
     - name: libdwarf
       run: |
            cd ..
-           mkdir zstd
-           cd zstd
-           git init
-           git remote add origin https://github.com/facebook/zstd.git
-           git fetch --depth 1 origin 63779c798237346c2b245c546c40b72a5a5913fe # 1.5.5
-           git checkout FETCH_HEAD
-           make -j
-           sudo make install
-           cd ..
-           mkdir libdwarf
-           cd libdwarf
-           git init
-           git remote add origin https://github.com/jeremy-rifkin/libdwarf-lite.git
-           git fetch --depth 1 origin 5c0cb251f94b27e90184e6b2d9a0c9c62593babc
-           git checkout FETCH_HEAD
-           mkdir build
-           cd build
-           cmake .. -DPIC_ALWAYS=TRUE -DBUILD_DWARFDUMP=FALSE
-           make -j
-           sudo make install
-           cd ../../cpptrace
+           cpptrace/ci/setup-prerequisites.sh
     - name: build
       run: |
            python3 ci/build-in-all-configs.py --${{matrix.compiler}}
@@ -99,31 +59,7 @@ jobs:
       run: |
            if("${{matrix.compiler}}" -eq "gcc") {
             cd ..
-            mkdir zstd
-            cd zstd
-            git init
-            git remote add origin https://github.com/facebook/zstd.git
-            git fetch --depth 1 origin 63779c798237346c2b245c546c40b72a5a5913fe # 1.5.5
-            git checkout FETCH_HEAD
-            cd build/cmake
-            mkdir build
-            cd build
-            cmake .. -DZSTD_BUILD_SHARED=On -DZSTD_BUILD_SHARED=Off -DZSTD_LEGACY_SUPPORT=Off -DZSTD_BUILD_PROGRAMS=Off -DZSTD_BUILD_CONTRIB=Off -DZSTD_BUILD_TESTS=Off -G"Unix Makefiles"
-            make -j
-            make install
-            cd ../../../..
-            mkdir libdwarf
-            cd libdwarf
-            git init
-            git remote add origin https://github.com/jeremy-rifkin/libdwarf-lite.git
-            git fetch --depth 1 origin 5c0cb251f94b27e90184e6b2d9a0c9c62593babc
-            git checkout FETCH_HEAD
-            mkdir build
-            cd build
-            cmake .. -DPIC_ALWAYS=TRUE -DBUILD_DWARFDUMP=FALSE -G"Unix Makefiles"
-            make -j
-            make install
-            cd ../../cpptrace
+            cpptrace/ci/setup-prerequisites-mingw.ps1
            }
     - name: build
       run: |
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 202e168..9d55a8a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -23,27 +23,7 @@ jobs:
     - name: libdwarf
       run: |
            cd ..
-           mkdir zstd
-           cd zstd
-           git init
-           git remote add origin https://github.com/facebook/zstd.git
-           git fetch --depth 1 origin 63779c798237346c2b245c546c40b72a5a5913fe # 1.5.5
-           git checkout FETCH_HEAD
-           make -j
-           sudo make install
-           cd ..
-           mkdir libdwarf
-           cd libdwarf
-           git init
-           git remote add origin https://github.com/jeremy-rifkin/libdwarf-lite.git
-           git fetch --depth 1 origin 5c0cb251f94b27e90184e6b2d9a0c9c62593babc
-           git checkout FETCH_HEAD
-           mkdir build
-           cd build
-           cmake .. -DPIC_ALWAYS=TRUE -DBUILD_DWARFDUMP=FALSE
-           make -j
-           sudo make install
-           cd ../../cpptrace
+           cpptrace/ci/setup-prerequisites.sh
     - name: build and test
       run: |
            python3 ci/test-all-configs.py --${{matrix.compiler}}
@@ -59,27 +39,7 @@ jobs:
     - name: libdwarf
       run: |
            cd ..
-           mkdir zstd
-           cd zstd
-           git init
-           git remote add origin https://github.com/facebook/zstd.git
-           git fetch --depth 1 origin 63779c798237346c2b245c546c40b72a5a5913fe # 1.5.5
-           git checkout FETCH_HEAD
-           make -j
-           sudo make install
-           cd ..
-           mkdir libdwarf
-           cd libdwarf
-           git init
-           git remote add origin https://github.com/jeremy-rifkin/libdwarf-lite.git
-           git fetch --depth 1 origin 5c0cb251f94b27e90184e6b2d9a0c9c62593babc
-           git checkout FETCH_HEAD
-           mkdir build
-           cd build
-           cmake .. -DPIC_ALWAYS=TRUE -DBUILD_DWARFDUMP=FALSE
-           make -j
-           sudo make install
-           cd ../../cpptrace
+           cpptrace/ci/setup-prerequisites.sh
     - name: dependencies
       run: |
            pip3 install colorama
@@ -115,31 +75,7 @@ jobs:
       run: |
            if("${{matrix.compiler}}" -eq "gcc") {
             cd ..
-            mkdir zstd
-            cd zstd
-            git init
-            git remote add origin https://github.com/facebook/zstd.git
-            git fetch --depth 1 origin 63779c798237346c2b245c546c40b72a5a5913fe # 1.5.5
-            git checkout FETCH_HEAD
-            cd build/cmake
-            mkdir build
-            cd build
-            cmake .. -DZSTD_BUILD_SHARED=On -DZSTD_BUILD_SHARED=Off -DZSTD_LEGACY_SUPPORT=Off -DZSTD_BUILD_PROGRAMS=Off -DZSTD_BUILD_CONTRIB=Off -DZSTD_BUILD_TESTS=Off -G"Unix Makefiles"
-            make -j
-            make install
-            cd ../../../..
-            mkdir libdwarf
-            cd libdwarf
-            git init
-            git remote add origin https://github.com/jeremy-rifkin/libdwarf-lite.git
-            git fetch --depth 1 origin 5c0cb251f94b27e90184e6b2d9a0c9c62593babc
-            git checkout FETCH_HEAD
-            mkdir build
-            cd build
-            cmake .. -DPIC_ALWAYS=TRUE -DBUILD_DWARFDUMP=FALSE -G"Unix Makefiles"
-            make -j
-            make install
-            cd ../../cpptrace
+            cpptrace/ci/setup-prerequisites-mingw.ps1
            }
     - name: build and test
       run: |
diff --git a/ci/setup-prerequisites-mingw.ps1 b/ci/setup-prerequisites-mingw.ps1
new file mode 100644
index 0000000..6be6c31
--- /dev/null
+++ b/ci/setup-prerequisites-mingw.ps1
@@ -0,0 +1,24 @@
+mkdir zstd
+cd zstd
+git init
+git remote add origin https://github.com/facebook/zstd.git
+git fetch --depth 1 origin 63779c798237346c2b245c546c40b72a5a5913fe # 1.5.5
+git checkout FETCH_HEAD
+cd build/cmake
+mkdir build
+cd build
+cmake .. -DZSTD_BUILD_SHARED=On -DZSTD_BUILD_SHARED=Off -DZSTD_LEGACY_SUPPORT=Off -DZSTD_BUILD_PROGRAMS=Off -DZSTD_BUILD_CONTRIB=Off -DZSTD_BUILD_TESTS=Off -G"Unix Makefiles"
+make -j
+make install
+cd ../../../..
+mkdir libdwarf
+cd libdwarf
+git init
+git remote add origin https://github.com/jeremy-rifkin/libdwarf-lite.git
+git fetch --depth 1 origin 5c0cb251f94b27e90184e6b2d9a0c9c62593babc
+git checkout FETCH_HEAD
+mkdir build
+cd build
+cmake .. -DPIC_ALWAYS=TRUE -DBUILD_DWARFDUMP=FALSE -G"Unix Makefiles"
+make -j
+make install
diff --git a/ci/setup-prerequisites.sh b/ci/setup-prerequisites.sh
new file mode 100755
index 0000000..5cfdb77
--- /dev/null
+++ b/ci/setup-prerequisites.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+mkdir zstd
+cd zstd
+git init
+git remote add origin https://github.com/facebook/zstd.git
+git fetch --depth 1 origin 63779c798237346c2b245c546c40b72a5a5913fe # 1.5.5
+git checkout FETCH_HEAD
+make -j
+sudo make install
+cd ..
+mkdir libdwarf
+cd libdwarf
+git init
+git remote add origin https://github.com/jeremy-rifkin/libdwarf-lite.git
+git fetch --depth 1 origin 5c0cb251f94b27e90184e6b2d9a0c9c62593babc
+git checkout FETCH_HEAD
+mkdir build
+cd build
+cmake .. -DPIC_ALWAYS=TRUE -DBUILD_DWARFDUMP=FALSE
+make -j
+sudo make install