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Add ppc64le (PowerPC) support to onnxruntime-extensions. #1041

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Merged
sayanshaw24 merged 3 commits into from
Apr 11, 2026
+40 −6
Merged

Add ppc64le (PowerPC) support to onnxruntime-extensions. #1041

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e353375
Add ppc64le (PowerPC) support to onnxruntime-extensions.
BODAPATIMAHESH Mar 31, 2026
549278c
Merge branch 'main' into main_ppc64le_port
BODAPATIMAHESH Apr 8, 2026
4aaf58b
Fixed the review comments.
BODAPATIMAHESH Apr 9, 2026
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44 changes: 39 additions & 5 deletions cmake/ext_imgcodecs.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,25 @@ set(_IMGCODEC_ROOT_DIR ${dlib_SOURCE_DIR}/dlib/external)
#
# ----------------------------------------------------------------------------
set (PNG_LIBRARY "libpng_static_c")
set (libPNG_SOURCE_DIR ${_IMGCODEC_ROOT_DIR}/libpng)

if(CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64|ppc64le")
message(STATUS "Using upstream libpng for PowerPC")
include(FetchContent)
FetchContent_Declare(
libpng_external
GIT_REPOSITORY https://github.com/pnggroup/libpng.git
GIT_TAG v1.6.56 # latest version
)

FetchContent_MakeAvailable(libpng_external)

set(libPNG_SOURCE_DIR ${libpng_external_SOURCE_DIR})

else()
# default (dlib bundled)
set(libPNG_SOURCE_DIR ${_IMGCODEC_ROOT_DIR}/libpng)
endif()

set (zlib_SOURCE_DIR ${_IMGCODEC_ROOT_DIR}/zlib)

if(NOT WIN32)
Expand All @@ -24,10 +42,26 @@ else()
set(M_LIBRARY "")
endif()

set(lib_srcs
${libPNG_SOURCE_DIR}/arm/arm_init.c
${libPNG_SOURCE_DIR}/arm/filter_neon_intrinsics.c
${libPNG_SOURCE_DIR}/arm/palette_neon_intrinsics.c
# Add architecture-specific PNG optimizations
set(lib_srcs)

# PowerPC VSX optimizations
if(CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64|ppc64le")
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@sayanshaw24 sayanshaw24 Apr 8, 2026 •
edited
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can we have one if/else here instead of 2 if's in case the processor name is something unexpected (check for ppc and fallback to current arm srcs)?

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@BODAPATIMAHESH BODAPATIMAHESH Apr 9, 2026

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Updated it. Please review @https://github.com/sayanshaw24

list(APPEND lib_srcs
${libPNG_SOURCE_DIR}/powerpc/powerpc_init.c
${libPNG_SOURCE_DIR}/powerpc/filter_vsx_intrinsics.c
)

else()
list(APPEND lib_srcs
${libPNG_SOURCE_DIR}/arm/arm_init.c
${libPNG_SOURCE_DIR}/arm/filter_neon_intrinsics.c
${libPNG_SOURCE_DIR}/arm/palette_neon_intrinsics.c
)
endif()

# Common PNG sources
list(APPEND lib_srcs
${libPNG_SOURCE_DIR}//png.c
${libPNG_SOURCE_DIR}//pngerror.c
${libPNG_SOURCE_DIR}//pngget.c
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2 changes: 1 addition & 1 deletion pyproject.toml
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Expand Up @@ -13,7 +13,7 @@ line-length = 120
[tool.cibuildwheel]
# Note: the below skip command doesn't do much currently, the platforms to
# build wheels for in CI are controlled in `wheels_linux` and `wheels_macos.yml`.
skip = "cp36-* cp37-* pp37-* *-manylinux_i686 *_ppc64le *_s390x *-musllinux_aarch64"
skip = "cp36-* cp37-* pp37-* *-manylinux_i686 *_s390x *-musllinux_aarch64"
build-verbosity = "3"

[[tool.cibuildwheel.overrides]]
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