Skip to content

Fix MSVC mutex initialization with older host runtimes #2354

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
doug-walker merged 2 commits into from
Sep 29, 2026
+4 −0
Merged

Fix MSVC mutex initialization with older host runtimes #2354

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
044323e
Fix MSVC mutex initialization with older host runtimes
zachlewis Sep 28, 2026
662e699
Merge branch 'main' into codex/msvc-mutex-compat
zachlewis Sep 29, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 4 additions & 0 deletions share/cmake/utils/CompilerFlags.cmake
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,10 @@ endif()

if(USE_MSVC)

# Keep mutex initialization compatible with older MSVC runtimes in host applications.
# See https://github.com/AcademySoftwareFoundation/OpenImageIO/issues/4641
add_compile_definitions(_DISABLE_CONSTEXPR_MUTEX_CONSTRUCTOR)

set(PLATFORM_COMPILE_OPTIONS "${PLATFORM_COMPILE_OPTIONS};/DUSE_MSVC")

# /we4062 Enables warning in switch when an enumeration value is not explicitly handled.
Expand Down
Loading