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Fix Windows build by clearing environmental variables #178

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Fix Windows build by clearing environmental variables #178

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14 changes: 14 additions & 0 deletions .github/workflows/cmake.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -245,6 +245,20 @@ jobs:
- name: Setup CMake
uses: lukka/get-cmake@latest

- name: Clear conflicting Qt environment (Windows)
if: runner.os == 'Windows'
shell: pwsh
run: |
# The "Install Qt" step (jurplel/install-qt-action) exports QTDIR,
# Qt6_DIR and CMAKE_PREFIX_PATH into the environment. On Windows the
# build must resolve Qt from the vcpkg x64-mingw-dynamic triplet, so
# this host Qt contaminates the CMake configure and causes unresolved
# Qt symbols at link time. Blank the variables via GITHUB_ENV so they
# are cleared for the subsequent Configure CMake step.
@('Qt5_DIR', 'Qt6_DIR', 'QTDIR', 'CMAKE_PREFIX_PATH') | ForEach-Object {
"$_=" | Out-File -FilePath $env:GITHUB_ENV -Append -Encoding utf8
}

- name: Configure CMake
shell: bash
run: |
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