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Suppress C4251 warnings in QuantLib DLL builds #5

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Merged
fumitoh merged 1 commit into from
Feb 22, 2026
Merged

Suppress C4251 warnings in QuantLib DLL builds #5

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3 changes: 2 additions & 1 deletion scripts/Build-QuantLibDLL.ps1
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@
Upstream QuantLib blocks DLL builds on MSVC with a FATAL_ERROR. This script
applies five patches to enable DLL builds:
1. cmake/Platform.cmake - Remove FATAL_ERROR blocking DLL builds
and suppress C4251 warnings
2. ql/CMakeLists.txt - Add RUNTIME DESTINATION for DLL install
3. ql/qldefines.hpp.cfg - Inject QL_EXPORT/QL_IMPORT_ONLY macros
4. normaldistribution.hpp - Annotate classes with QL_EXPORT
Expand Down Expand Up @@ -113,7 +114,7 @@ $PlatformCmake = "$QLSrcDir\cmake\Platform.cmake"
$original = Get-Content $PlatformCmake -Raw
$patched = $original -replace `
'message\(FATAL_ERROR\s*\r?\n\s*"Shared library \(DLL\) builds for QuantLib on MSVC are not supported"\)', `
'# Patched: DLL build enabled (FATAL_ERROR removed by QuantLib-DLL)'
"# Patched: DLL build enabled (FATAL_ERROR removed by QuantLib-DLL)`nadd_compile_options(/wd4251) # Suppress C4251: STL types in DLL-exported class members"
if ($patched -eq $original) {
Write-Warning "Platform.cmake patch pattern did not match - file may have changed or already patched"
Select-String -Path $PlatformCmake -Pattern "FATAL_ERROR|BUILD_SHARED|EXPORT_ALL|Patched" | Write-Host
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