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fix(jolt): disable IPO so libJolt.a links on Linux/GCC (#44) #47

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Merged
proggeramlug merged 1 commit into from
May 1, 2026
+14 −5
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fix(jolt): disable IPO so libJolt.a links on Linux/GCC (#44) #47

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19 changes: 14 additions & 5 deletions native/third_party/bloom_jolt/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -8,11 +8,18 @@ set(CMAKE_POSITION_INDEPENDENT_CODE ON)

# ---------------------------------------------------------------------------
# JoltPhysics build options.
# Matches the "Distribution" flavour: no asserts, no profile, no debug renderer,
# interprocedural optimisation on. We keep object stream off — we don't use
# Jolt's scene serialisation (Bloom handles save/load itself).
# Matches the "Distribution" flavour: no asserts, no profile, no debug renderer.
# We keep object stream off — we don't use Jolt's scene serialisation (Bloom
# handles save/load itself).
#
# IPO is OFF because Rust's link step on Linux/GCC routes through rust-lld,
# which doesn't load gcc's lto-wrapper plugin. With IPO on, libJolt.a's archive
# members are GIMPLE bitcode and rust-lld leaves their implementations
# unresolved (undefined-symbol errors on JPH::Free, BodyManager locks, vtables,
# etc — see issue #44). Jolt is heavily inlined via its precompiled header
# already, so the perf delta from skipping LTO on the static archive is small.
# ---------------------------------------------------------------------------
set(INTERPROCEDURAL_OPTIMIZATION ON CACHE BOOL "" FORCE)
set(INTERPROCEDURAL_OPTIMIZATION OFF CACHE BOOL "" FORCE)
set(USE_STATIC_MSVC_RUNTIME_LIBRARY OFF CACHE BOOL "" FORCE)
set(TARGET_UNIT_TESTS OFF CACHE BOOL "" FORCE)
set(TARGET_HELLO_WORLD OFF CACHE BOOL "" FORCE)
Expand All @@ -21,8 +28,10 @@ set(TARGET_SAMPLES OFF CACHE BOOL "" FORCE)
set(TARGET_VIEWER OFF CACHE BOOL "" FORCE)
set(OBJECT_LAYER_BITS 16 CACHE STRING "" FORCE)
set(USE_ASSERTS OFF CACHE BOOL "" FORCE)
set(PROFILE_ENABLED OFF CACHE BOOL "" FORCE)
set(PROFILER_IN_DEBUG_AND_RELEASE OFF CACHE BOOL "" FORCE)
set(PROFILER_IN_DISTRIBUTION OFF CACHE BOOL "" FORCE)
set(DEBUG_RENDERER_IN_DEBUG_AND_RELEASE OFF CACHE BOOL "" FORCE)
set(DEBUG_RENDERER_IN_DISTRIBUTION OFF CACHE BOOL "" FORCE)
set(CROSS_PLATFORM_DETERMINISTIC OFF CACHE BOOL "" FORCE)
set(FLOATING_POINT_EXCEPTIONS_ENABLED OFF CACHE BOOL "" FORCE)
set(DOUBLE_PRECISION OFF CACHE BOOL "" FORCE)
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