# --- T2-COPYRIGHT-BEGIN ---
# t2/package/*/intel-gmmlib/x32.patch
# Copyright (C) 2026 The T2 SDE Project
# SPDX-License-Identifier: GPL-2.0 or patched project license
# --- T2-COPYRIGHT-END ---

On x32 CMAKE_SIZEOF_VOID_P is 4, so GMMLIB_ARCH becomes "32" and the build
passes -m32, which switches the x86_64 compiler to plain i386. Compiles still
use the default x32 ABI, so linking mixes the two and LTO aborts with an
internal compiler error while reading the cgraph. That already broke the
FindThreads probes at configure time:

  lto1: internal compiler error: Segmentation fault
  CMake Error: Could NOT find Threads (missing: Threads_FOUND)

Select the ABI flag separately from the pointer size, so x86_64 with 32 bit
pointers gets -mx32.

--- gmmlib-intel-gmmlib-22.10.0/Source/GmmLib/CMakeLists.txt.vanilla	2026-07-25 13:10:18.190270820 +0200
+++ gmmlib-intel-gmmlib-22.10.0/Source/GmmLib/CMakeLists.txt	2026-07-25 13:08:44.441512585 +0200
@@ -165,6 +165,14 @@ else()
     set (GMMLIB_ARCH "32")
 endif()
 
+# x86_64 with 32 bit pointers is the x32 ABI: it needs -mx32, as -m32 would
+# switch the compiler to plain i386 and produce objects the linker rejects.
+if("${GMMLIB_ARCH}" STREQUAL "32" AND "${CMAKE_SYSTEM_PROCESSOR}" MATCHES "x86_64|amd64")
+    set (GMMLIB_ABI "x32")
+else()
+    set (GMMLIB_ABI "${GMMLIB_ARCH}")
+endif()
+
 if (${CMAKE_SYSTEM_PROCESSOR} MATCHES "^aarch")
     set(GMMLIB_MARCH "armv8-a+fp+simd")
 elseif("${GMMLIB_MARCH}" STREQUAL "")
@@ -174,6 +182,7 @@ endif()
 MESSAGE("platform: ${CMAKE_HOST_SYSTEM_NAME}")
 MESSAGE("source_dir: ${BS_DIR_GMMLIB}")
 MESSAGE("arch: ${GMMLIB_ARCH}")
+MESSAGE("abi: ${GMMLIB_ABI}")
 MESSAGE("build type: ${CMAKE_BUILD_TYPE}")
 MESSAGE("SourceConfiguration:")
 MESSAGE("CommonDir: ${BS_DIR_COMMON}")
--- gmmlib-intel-gmmlib-22.10.0/Source/GmmLib/Linux.cmake.vanilla	2026-07-25 13:10:18.191087490 +0200
+++ gmmlib-intel-gmmlib-22.10.0/Source/GmmLib/Linux.cmake	2026-07-25 13:08:57.495644943 +0200
@@ -104,8 +104,8 @@ else()
     -fvisibility=hidden
     -fPIC
     -g
-    # -m32 or -m64
-    -m${GMMLIB_ARCH}
+    # -m32, -m64 or -mx32
+    -m${GMMLIB_ABI}
     )
 endif()
 
@@ -178,6 +178,6 @@ if (${CMAKE_SYSTEM_PROCESSOR} MATCHES "^
     SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
     SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
 else()
-    SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -m${GMMLIB_ARCH}")
-    SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -m${GMMLIB_ARCH}")
+    SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -m${GMMLIB_ABI}")
+    SET(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -m${GMMLIB_ABI}")
 endif()