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Add precompiled header for kernel libraries (~11.85% faster build) #612

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Add precompiled header for kernel libraries (~11.85% faster build) #612

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11 changes: 11 additions & 0 deletions kernels/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -357,6 +357,17 @@ target_include_directories(embree PUBLIC
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../include>
$<INSTALL_INTERFACE:include>)

# Precompiled header: kernels/common/default.h is included by nearly every
# kernel translation unit and transitively pulls in platform.h, intrinsics.h,
# windows.h and heavy STL headers. Precompiling it once per (ISA) target
# amortizes that parse cost across all TUs of the target.
SET(EMBREE_PCH_HEADER "${CMAKE_CURRENT_SOURCE_DIR}/common/default.h")
FOREACH(EMBREE_PCH_TARGET embree embree_sse42 embree_avx embree_avx2 embree_avx512)
IF (TARGET ${EMBREE_PCH_TARGET})
TARGET_PRECOMPILE_HEADERS(${EMBREE_PCH_TARGET} PRIVATE "${EMBREE_PCH_HEADER}")
ENDIF()
ENDFOREACH()


# libtbb is located in same install folder as libembree
IF(WIN32)
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