From 2c9928e4cbfd926ee7ea27dedf851e41c2c3c5ee Mon Sep 17 00:00:00 2001
From: Timothy Pearson <tpearson@raptorcs.com>
Date: Wed, 15 Oct 2025 22:12:02 -0500
Subject: [PATCH] Fix FTBFS on ppc64le systems

Tested to compile and function normally under Debian Trixie ppc64le / POWER9

Signed-off-by: Timothy Pearson <tpearson@raptorcs.com>
---
 libraries/source/nvtt/build.sh                |  5 ++++-
 ...0004-Properly-detect-ppc64le-systems.patch | 17 ++++++++++++++
 ...ix-compiler-flags-on-ppc64le-systems.patch | 14 ++++++++++++
 ...x-altivec-include-on-ppc64le-systems.patch | 22 +++++++++++++++++++
 4 files changed, 57 insertions(+), 1 deletion(-)
 create mode 100644 libraries/source/nvtt/patches/0004-Properly-detect-ppc64le-systems.patch
 create mode 100644 libraries/source/nvtt/patches/0005-Fix-compiler-flags-on-ppc64le-systems.patch
 create mode 100644 libraries/source/nvtt/patches/0006-Fix-altivec-include-on-ppc64le-systems.patch

diff --git a/libraries/source/nvtt/build.sh b/libraries/source/nvtt/build.sh
index 73aa186f7a..f05ce283e5 100755
--- a/libraries/source/nvtt/build.sh
+++ b/libraries/source/nvtt/build.sh
@@ -6,7 +6,7 @@ set -e
 cd "$(dirname "$0")"
 
 PV=28209
-LIB_VERSION=${PV}+wfg3
+LIB_VERSION=${PV}+wfg4
 
 fetch()
 {
@@ -64,6 +64,9 @@ rm -Rf nvtt-${PV}
 patch -d nvtt-${PV} -p1 <patches/0001-Don-t-overspecify-flags.patch
 patch -d nvtt-${PV} -p1 <patches/0002-Bump-cmake-min-version-to-3.10.patch
 patch -d nvtt-${PV} -p1 <patches/0003-Use-execute_process-insted-of-exec_program.patch
+patch -d nvtt-${PV} -p1 <patches/0004-Properly-detect-ppc64le-systems.patch
+patch -d nvtt-${PV} -p1 <patches/0005-Fix-compiler-flags-on-ppc64le-systems.patch
+patch -d nvtt-${PV} -p1 <patches/0006-Fix-altivec-include-on-ppc64le-systems.patch
 
 # build
 (
diff --git a/libraries/source/nvtt/patches/0004-Properly-detect-ppc64le-systems.patch b/libraries/source/nvtt/patches/0004-Properly-detect-ppc64le-systems.patch
new file mode 100644
index 0000000000..ec38c95508
--- /dev/null
+++ b/libraries/source/nvtt/patches/0004-Properly-detect-ppc64le-systems.patch
@@ -0,0 +1,17 @@
+--- a/src/cmake/DetermineProcessor.cmake
++++ a/src/cmake/DetermineProcessor.cmake
+@@ -15,6 +15,14 @@
+ 			SET(NV_SYSTEM_PROCESSOR "powerpc")
+ 		ENDIF(NV_SYSTEM_PROCESSOR STREQUAL "Power Macintosh")
+ 
++		IF(NV_SYSTEM_PROCESSOR STREQUAL "ppc64le")
++			SET(NV_SYSTEM_PROCESSOR "ppc64")
++		ENDIF(NV_SYSTEM_PROCESSOR STREQUAL "ppc64le")
++
++		IF(NV_SYSTEM_PROCESSOR STREQUAL "ppc64el")
++			SET(NV_SYSTEM_PROCESSOR "ppc64")
++		ENDIF(NV_SYSTEM_PROCESSOR STREQUAL "ppc64el")
++
+ 		# processor may have double quote in the name, and that needs to be removed
+ 		STRING(REGEX REPLACE "\"" "" NV_SYSTEM_PROCESSOR "${NV_SYSTEM_PROCESSOR}")
+ 		STRING(REGEX REPLACE "/" "_" NV_SYSTEM_PROCESSOR "${NV_SYSTEM_PROCESSOR}")
diff --git a/libraries/source/nvtt/patches/0005-Fix-compiler-flags-on-ppc64le-systems.patch b/libraries/source/nvtt/patches/0005-Fix-compiler-flags-on-ppc64le-systems.patch
new file mode 100644
index 0000000000..3e982c5df8
--- /dev/null
+++ b/libraries/source/nvtt/patches/0005-Fix-compiler-flags-on-ppc64le-systems.patch
@@ -0,0 +1,14 @@
+--- a/src/cmake/OptimalOptions.cmake
++++ b/src/cmake/OptimalOptions.cmake
+@@ -31,6 +31,11 @@
+ 
+ 	ENDIF(NV_SYSTEM_PROCESSOR STREQUAL "powerpc")
+ 
++	IF(NV_SYSTEM_PROCESSOR STREQUAL "ppc64")
++		SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mcpu=power8 -maltivec -mabi=altivec -mpowerpc64 -mvsx")
++	ENDIF(NV_SYSTEM_PROCESSOR STREQUAL "ppc64")
++
++
+ #	IF(DARWIN)
+ #		SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mmacosx-version-min=10.5 -isysroot /Developer/SDKs/MacOSX10.5.sdk")
+ #		SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mmacosx-version-min=10.5 -isysroot /Developer/SDKs/MacOSX10.5.sdk")
diff --git a/libraries/source/nvtt/patches/0006-Fix-altivec-include-on-ppc64le-systems.patch b/libraries/source/nvtt/patches/0006-Fix-altivec-include-on-ppc64le-systems.patch
new file mode 100644
index 0000000000..c474f8bae9
--- /dev/null
+++ b/libraries/source/nvtt/patches/0006-Fix-altivec-include-on-ppc64le-systems.patch
@@ -0,0 +1,22 @@
+--- a/src/src/nvtt/squish/simd_ve.h
++++ b/src/src/nvtt/squish/simd_ve.h
+@@ -27,7 +27,7 @@
+ #ifndef SQUISH_SIMD_VE_H
+ #define SQUISH_SIMD_VE_H
+ 
+-#ifndef __APPLE_ALTIVEC__
++#if !defined(__APPLE_ALTIVEC__) || defined(__powerpc64__)
+ #include <altivec.h>
+ #undef bool
+ #endif
+--- a/src/src/nvmath/SimdVector_VE.h
++++ b/src/src/nvmath/SimdVector_VE.h
+@@ -27,7 +27,7 @@
+ #ifndef NV_SIMD_VECTOR_VE_H
+ #define NV_SIMD_VECTOR_VE_H
+ 
+-#ifndef __APPLE_ALTIVEC__
++#if !defined(__APPLE_ALTIVEC__) || defined(__powerpc64__)
+ #include <altivec.h>
+ #undef bool
+ #endif