Add AIX support

CMakeLists.txt

@@ -629,7 +629,7 @@ if(OCOS_ENABLE_VISION)
     if (NOT OCOS_ENABLE_DLIB)
       message(FATAL_ERROR "Vision operators require DLIB to be enabled.") # for now, we need dlib for image processing
     endif()
-    include(ext_imgcodecs)  
+    include(ext_imgcodecs)
     target_include_directories(ocos_operators PUBLIC ${libPNG_SOURCE_DIR} ${libJPEG_SOURCE_DIR})
     target_link_libraries(ocos_operators PUBLIC ${PNG_LIBRARY} ${JPEG_LIBRARY})
   endif()
@@ -763,9 +763,14 @@ if(OCOS_BUILD_SHARED_LIB)
   source_group(TREE ${PROJECT_SOURCE_DIR} FILES ${shared_TARGET_SRC})
   standardize_output_folder(extensions_shared)
 
-  if(LINUX OR ANDROID)
-    set_property(TARGET extensions_shared APPEND_STRING PROPERTY LINK_FLAGS
-      " -Wl,--version-script -Wl,${PROJECT_SOURCE_DIR}/shared/ortcustomops.ver")
+ if(LINUX OR ANDROID OR CMAKE_SYSTEM_NAME STREQUAL "AIX")
+    if(CMAKE_SYSTEM_NAME STREQUAL "AIX")
+      set_property(TARGET extensions_shared APPEND_STRING PROPERTY LINK_FLAGS
+        " -Wl,-bE:${PROJECT_SOURCE_DIR}/shared/ortcustomops.exp")
+    else()
+      set_property(TARGET extensions_shared APPEND_STRING PROPERTY LINK_FLAGS
+        " -Wl,--version-script -Wl,${PROJECT_SOURCE_DIR}/shared/ortcustomops.ver")
+    endif()
     # strip if not a debug build
     if(NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
       set_property(TARGET extensions_shared APPEND_STRING PROPERTY LINK_FLAGS " -Wl,-s")

cmake/externals/blingfire-aix.patch

@@ -0,0 +1,34 @@
+--- ./blingfireclient.library/inc/FAConfig_orig.h	2026-05-19 03:27:38.241882009 -0500
++++ ./blingfireclient.library/inc/FAConfig.h	2026-05-19 03:29:23.720979389 -0500
+@@ -11,6 +11,7 @@
+ #define NEW new
+ #endif
+
++#include <stdio.h>
+ #if _MSC_VER < 1400
+ # ifndef fopen_s
+ #   define fopen_s(ppF,pN,pA) int(0); *ppF = fopen(pN,pA);
+@@ -23,13 +24,12 @@
+ #include <ctype.h>
+ #include <fcntl.h>
+
+-#ifdef BLING_FIRE_MAC
++#if defined(BLING_FIRE_MAC) || defined(_AIX)
+   #include <string>
+ #else
+   #include <malloc.h>
+ #endif
+
+-#include <stdio.h>
+ #include <stdlib.h>
+ #include <string.h>
+ #include <cmath>
+@@ -79,7 +79,7 @@
+
+ #include <stdint.h>
+
+-/* because we have stdint.h 
++/* because we have stdint.h
+ #ifndef __int32
+ #define __int32 int32_t
+ #endif

cmake/externals/blingfire.cmake

@@ -3,9 +3,10 @@ FetchContent_Declare(
   GIT_REPOSITORY https://github.com/microsoft/BlingFire.git
   GIT_TAG 0831265c1aca95ca02eca5bf1155e4251e545328
   EXCLUDE_FROM_ALL
-  PATCH_COMMAND git checkout . && git apply --ignore-space-change --ignore-whitespace ${PROJECT_SOURCE_DIR}/cmake/externals/blingfire_cmake.patch)
-
+  PATCH_COMMAND git checkout . && git apply --ignore-space-change --ignore-whitespace ${PROJECT_SOURCE_DIR}/cmake/externals/blingfire_cmake.patch  && git apply --ignore-space-change --ignore-whitespace  ${PROJECT_SOURCE_DIR}/cmake/externals/blingfire-aix.patch
+  )
 FetchContent_MakeAvailable(Blingfire)
+
 set_target_properties(bingfirtinydll_static PROPERTIES FOLDER
                                                        externals/bingfire)
 set_target_properties(fsaClientTiny PROPERTIES FOLDER externals/bingfire)

cmake/externals/blingfire_cmake.patch

@@ -5,6 +5,18 @@ index 5d47b3a..dd36aaf 100644
 @@ -1,4 +1,4 @@
 -cmake_minimum_required (VERSION 3.0)
 +cmake_minimum_required (VERSION 3.5)
- 
+
  set (BLING_FIRE_VERSION_MAJOR 1)
  set (BLING_FIRE_VERSION_MINOR 0)
+
+--- ./CMakeLists_orig.txt	2026-05-23 03:43:50.580750573 -0500
++++ ./CMakeLists.txt	2026-05-23 03:44:19.454763579 -0500
+@@ -107,7 +107,7 @@
+       IF(${dirname} STREQUAL "any_test")
+         target_link_libraries(${dirname} ${CMAKE_DL_LIBS})
+       ENDIF()
+-      IF (APPLE)
++      IF (APPLE OR CMAKE_SYSTEM_NAME MATCHES "AIX")
+         target_link_libraries(${dirname} iconv)
+       ENDIF()
+     ENDIF()

cmake/externals/dr_libs.cmake

@@ -2,6 +2,7 @@ FetchContent_Declare(dr_libs
     URL         https://github.com/mackron/dr_libs/archive/660795b2834aebb2217c9849d668b6e4bd4ef810.zip
     URL_HASH    SHA1=af554b21dcd1ab3c7c8d946638682a2cbccf3e16
     SOURCE_SUBDIR not_set
+    PATCH_COMMAND  git apply --whitespace=fix --ignore-space-change --ignore-whitespace ${CMAKE_CURRENT_SOURCE_DIR}/cmake/externals/dr_libs_aix.patch
 )
 
 FetchContent_MakeAvailable(dr_libs)

cmake/externals/dr_libs_aix.patch

@@ -0,0 +1,13 @@
+--- ./dr_mp3.h	2026-03-28 10:41:13.180505219 -0500
++++ ./dr_mp3.h	2026-03-28 10:41:06.567807627 -0500
+@@ -86,6 +86,10 @@
+ #ifndef dr_mp3_h
+ #define dr_mp3_h
+
++#if defined(_AIX) && defined(hz)
++#undef hz
++#endif
++
+ #ifdef __cplusplus
+ extern "C" {
+ #endif

cmake/externals/opencv.cmake

@@ -149,8 +149,8 @@ FetchContent_Declare(
     -DBUILD_TESTS:BOOL=FALSE
     -DBUILD_SHARED_LIBS:BOOL=FALSE
     -DCMAKE_INSTALL_PREFIX:PATH=${CMAKE_CURRENT_BINARY_DIR}/opencv
-    PATCH_COMMAND git checkout . && git apply --whitespace=fix --ignore-space-change --ignore-whitespace ${CMAKE_CURRENT_SOURCE_DIR}/cmake/externals/opencv-no-rtti.patch
     EXCLUDE_FROM_ALL
+    PATCH_COMMAND git checkout . && git apply --whitespace=fix --ignore-space-change --ignore-whitespace ${CMAKE_CURRENT_SOURCE_DIR}/cmake/externals/opencv-no-rtti.patch && git apply --whitespace=fix --ignore-space-change --ignore-whitespace ${CMAKE_CURRENT_SOURCE_DIR}/cmake/externals/rand_aix.patch && git apply --whitespace=fix --ignore-space-change --ignore-whitespace ${CMAKE_CURRENT_SOURCE_DIR}/cmake/externals/opencv_libpng_aix.patch
 )
 
 FetchContent_MakeAvailable(opencv)

cmake/externals/opencv_libpng_aix.patch

@@ -0,0 +1,19 @@
+--- a/3rdparty/libpng/CMakeLists.txt
++++ b/3rdparty/libpng/CMakeLists.txt
+@@ -56,11 +56,12 @@ else()
+ endif()
+
+-if(PPC64LE OR PPC64)
+-  # VSX3 features are backwards compatible
+-  if(";${CPU_BASELINE_FINAL};" MATCHES "VSX.*"
+-      AND NOT PPC64)
++# Enable PowerPC VSX optimizations on PowerPC systems (Linux) and AIX
++if(PPC64LE OR PPC64 OR CMAKE_SYSTEM_NAME MATCHES "AIX")
++  # Enable VSX on PowerPC (AIX and Linux)
++  if(";${CPU_BASELINE_FINAL};" MATCHES "VSX.*" OR CMAKE_SYSTEM_NAME MATCHES "AIX")
+     list(APPEND lib_srcs powerpc/powerpc_init.c powerpc/filter_vsx_intrinsics.c)
+     add_definitions(-DPNG_POWERPC_VSX_OPT=2)
++    message(STATUS "libpng: PowerPC VSX optimizations enabled")
+   else()
+     add_definitions(-DPNG_POWERPC_VSX_OPT=0)
+   endif()

cmake/externals/rand_aix.patch

@@ -0,0 +1,46 @@
+
+--- ./modules/core/src/rand.cpp	2026-03-25 07:34:27.666925971 -0500
++++ ./modules/core/src/rand.cpp	2026-03-25 07:40:40.661543262 -0500
+@@ -48,6 +48,10 @@
+
+ #include "precomp.hpp"
+
++#if defined(_AIX) && defined(hz)
++#undef hz
++#endif
++
+ namespace cv
+ {
+
+--- ./modules/core/src/system.cpp	2026-03-25 07:50:38.785508231 -0500
++++ ./modules/core/src/system.cpp	2026-03-25 07:50:25.791118063 -0500
+@@ -130,7 +130,7 @@
+ #  include <fcntl.h>
+ #if defined __QNXNTO__
+ #  include <sys/elf.h>
+-#else
++#elif !defined (_AIX)
+ #  include <elf.h>
+ #endif
+ #if defined __ANDROID__ || defined __linux__
+@@ -146,8 +146,8 @@
+ #endif
+
+
+-#if (defined __ppc64__ || defined __PPC64__) && defined __unix__
++#if (defined __ppc64__ || defined __PPC64__) && defined __unix__ && !defined _AIX
+ # include "sys/auxv.h"
+ # ifndef AT_HWCAP2
+ #   define AT_HWCAP2 26
+ # endif
+@@ -615,7 +615,7 @@
+     #ifdef __mips_msa
+         have[CV_CPU_MSA] = true;
+     #endif
+
+-    #if (defined __ppc64__ || defined __PPC64__) && defined __unix__
++    #if (defined __ppc64__ || defined __PPC64__) && defined __unix__ && !defined _AIX
+         unsigned int hwcap = getauxval(AT_HWCAP);
+         if (hwcap & PPC_FEATURE_HAS_VSX) {
+             hwcap = getauxval(AT_HWCAP2);
+

cmake/externals/sentencepieceproject.cmake

@@ -39,7 +39,9 @@ endif()
 # PB files was seperated as another patch file to avoid the patch file too large to be reviewed.
 set(spm_patches
   "${PROJECT_SOURCE_DIR}/cmake/externals/sentencepieceproject_cmake.patch"
-  "${PROJECT_SOURCE_DIR}/cmake/externals/sentencepieceproject_pb.patch")
+  "${PROJECT_SOURCE_DIR}/cmake/externals/sentencepieceproject_pb.patch"
+  "${PROJECT_SOURCE_DIR}/cmake/externals/sentencepieceproject_aix.patch"
+  "${PROJECT_SOURCE_DIR}/cmake/externals/sentencepieceproject_enum.patch")
 
 set(spm_patch_command git checkout . && git apply --ignore-space-change --ignore-whitespace ${spm_patches})
 

cmake/externals/sentencepieceproject_aix.patch

@@ -0,0 +1,13 @@
+--- ./src/util.h_orig	2026-03-13 04:45:26.898234633 -0500
++++ ./src/util.h	2026-03-13 05:08:47.892826822 -0500
+@@ -36,7 +36,9 @@
+ #include <pthread.h>
+ #endif
+
+-#if !defined(__APPLE__) && !defined(_WIN32)
++#if defined(_AIX)
++#define IS_BIG_ENDIAN
++#elif !defined(__APPLE__) && !defined(_WIN32)
+ #include <endian.h>
+ #if BYTE_ORDER == __BIG_ENDIAN
+ #define IS_BIG_ENDIAN

cmake/externals/sentencepieceproject_enum.patch

@@ -0,0 +1,11 @@
+--- ./src/unicode_script.h_orig	2026-04-06 23:28:59.276085358 -0500
++++ ./src/unicode_script.h	2026-04-06 23:29:39.906085511 -0500
+@@ -19,7 +19,7 @@
+
+ namespace sentencepiece {
+ namespace unicode_script {
+-enum ScriptType {
++enum ScriptType : int32_t {
+   U_Adlam,
+   U_Ahom,
+   U_Anatolian_Hieroglyphs,

operators/text/vector_to_string.hpp

@@ -13,7 +13,7 @@ namespace std {
 
 template <class T>
 struct hash<std::vector<T>> {
-  size_t operator()(const vector<T>& __vector) const noexcept;
+  size_t operator()(const vector<T>& __vec) const noexcept;
 };
 }  // namespace std
 

operators/tokenizer/ugm_kernels.hpp

@@ -89,11 +89,22 @@ struct SpmUgmTokenizer {
       //   std::cout << int(charsmap_data_[i]) << " ";
       // }
 
+      if (charsmap_data_.size() < sizeof(uint32_t)) {
+        return OrtxStatus(extError_t::kOrtxErrorCorruptData, "Precompiled charsmap is too short to contain XCDA header.");
+      }
       size_t charsmap_offset = 0;
 
       // First four bytes of precompiled_charsmap contains length of binary
       // blob containing XOR-compressed compact double array (XCDA) entries
-      uint32_t xcda_blob_size = *(const uint32_t*)&charsmap_data_[0];
+      // The data is stored in little-endian format, so we need to convert on big-endian systems
+      uint32_t xcda_blob_size;
+      std::memcpy(&xcda_blob_size, &charsmap_data_[0], sizeof(xcda_blob_size));
+
+      // Convert from little-endian to host byte order
+      #if defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+      xcda_blob_size = __builtin_bswap32(xcda_blob_size);
+      #endif
+
       charsmap_offset += sizeof(xcda_blob_size);
       if (xcda_blob_size + charsmap_offset >= charsmap_data_.size()) {
         return OrtxStatus(extError_t::kOrtxErrorCorruptData, "Index out of array bounds in precompiled charsmap!");
@@ -296,7 +307,7 @@ struct SpmUgmTokenizer {
                         "Invalid UTF-8 encoding detected in input string at position " +
                         std::to_string(-validation_result));
     }
-    
+
     std::string normalized;
     if (case_encoder_) {
       normalized = NmtNormalize(input);
@@ -637,7 +648,12 @@ struct SpmUgmTokenizer {
       if (index >= xcda_array_size_) {  // Fix #2: off-by-one correction
         ORTX_CXX_API_THROW("[UgmTok]Index out of array bounds in XCDA array!", ORT_RUNTIME_EXCEPTION);
       }
-      return xcda_array_[index];
+      uint32_t value = xcda_array_[index];
+      // Convert from little-endian to host byte order
+      #if defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+      value = __builtin_bswap32(value);
+      #endif
+      return value;
     }
     const uint32_t* xcda_array_;
     size_t xcda_array_size_;
@@ -1051,4 +1067,4 @@ class SpmUgmDecoder {
   std::set<extTokenId_t> special_token_ids_;
 };
 
-}  // namespace ort_extensions
+}  // namespace ort_extensions

shared/api/nemo_mel_spectrogram.h

@@ -9,6 +9,10 @@
 #include <utility>
 #include <vector>
 
+#if defined _AIX && defined (hz)
+#undef hz
+#endif
+
 namespace nemo_mel {
 
 struct NemoMelConfig {

shared/ortcustomops.exp

@@ -0,0 +1,3 @@
+RegisterCustomOps
+AddExternalCustomOp
+GetActiveOrtAPIVersion