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abseil: disable CMAKE_INCLUDE_CURRENT_DIR for the in-tree build #900

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Merged
jcelerier merged 1 commit into from
Jun 21, 2026
Merged

abseil: disable CMAKE_INCLUDE_CURRENT_DIR for the in-tree build #900

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8 changes: 8 additions & 0 deletions cmake/deps/abseil.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,14 @@ if(NOT TARGET absl::strings)
# get flooded with warnings coming from them.
set(ABSL_USE_SYSTEM_INCLUDES ON CACHE INTERNAL "")

# A consumer with CMAKE_INCLUDE_CURRENT_DIR enabled would otherwise add each
# Abseil target's own source/binary dir as a plain -I. For the absl/time
# target that injects -I.../absl/time, whose time.h then shadows the system
# C <time.h> (e.g. when pthread.h does #include <time.h>), breaking the
# build with "no member named 'clock_t' in the global namespace" errors.
# Abseil includes its own headers as absl/... so it does not need this.
set(CMAKE_INCLUDE_CURRENT_DIR OFF)

# Abseil's CMakeLists forcibly overrides CMAKE_MSVC_RUNTIME_LIBRARY from its
# own ABSL_MSVC_STATIC_RUNTIME option (default OFF -> /MD), ignoring what the
# rest of the build selected. Static ossia builds (Max/PD/Python/Unity, ...)
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