From 34d8e036bb19ac074be3c6ae9abd140f5c2d916f Mon Sep 17 00:00:00 2001
From: Junya Morioka <mjun@mjunya.com>
Date: Wed, 28 Jan 2026 02:35:58 +0900
Subject: [PATCH] fix: downgrade gcc-toolset from 14 to 13 for CUDA
 compatibility

gcc-toolset-14 (GCC 14) in manylinux_2_28 containers is incompatible
with CUDA 12.6 nvcc, causing compilation errors in type_traits headers.
Use gcc-toolset-13 instead and export CC/CXX to GITHUB_ENV to ensure
subsequent steps use the correct compiler.
---
 .../workflows/_build_linux_arm_self_host.yml  | 14 ++++++++--
 .github/workflows/_build_linux_self_host.yml  | 28 ++++++++++++++++---
 2 files changed, 36 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/_build_linux_arm_self_host.yml b/.github/workflows/_build_linux_arm_self_host.yml
index 2c0aa44..618300b 100644
--- a/.github/workflows/_build_linux_arm_self_host.yml
+++ b/.github/workflows/_build_linux_arm_self_host.yml
@@ -99,12 +99,22 @@ jobs:
               unzip \
               zip \
               git \
-              gcc \
-              gcc-c++ \
+              gcc-toolset-13-gcc \
+              gcc-toolset-13-gcc-c++ \
               clang \
               ninja-build \
               time \
               patchelf
+            # Activate gcc-toolset-13 for CUDA compatibility
+            if [ -f /opt/rh/gcc-toolset-13/enable ]; then
+              # Export PATH and other env vars to GITHUB_ENV for subsequent steps
+              source /opt/rh/gcc-toolset-13/enable
+              echo "PATH=$PATH" >> $GITHUB_ENV
+              echo "LD_LIBRARY_PATH=${LD_LIBRARY_PATH:-}" >> $GITHUB_ENV
+              echo "CC=$(which gcc)" >> $GITHUB_ENV
+              echo "CXX=$(which g++)" >> $GITHUB_ENV
+              echo "GCC version: $(gcc --version | head -1)"
+            fi
           else
             echo "Error: No supported package manager found (apt-get or dnf)"
             exit 1
diff --git a/.github/workflows/_build_linux_self_host.yml b/.github/workflows/_build_linux_self_host.yml
index 6e2b0b4..51f2d9e 100644
--- a/.github/workflows/_build_linux_self_host.yml
+++ b/.github/workflows/_build_linux_self_host.yml
@@ -104,12 +104,22 @@ jobs:
               unzip \
               zip \
               git \
-              gcc \
-              gcc-c++ \
+              gcc-toolset-13-gcc \
+              gcc-toolset-13-gcc-c++ \
               clang \
               ninja-build \
               time \
               patchelf
+            # Activate gcc-toolset-13 for CUDA compatibility
+            if [ -f /opt/rh/gcc-toolset-13/enable ]; then
+              # Export PATH and other env vars to GITHUB_ENV for subsequent steps
+              source /opt/rh/gcc-toolset-13/enable
+              echo "PATH=$PATH" >> $GITHUB_ENV
+              echo "LD_LIBRARY_PATH=${LD_LIBRARY_PATH:-}" >> $GITHUB_ENV
+              echo "CC=$(which gcc)" >> $GITHUB_ENV
+              echo "CXX=$(which g++)" >> $GITHUB_ENV
+              echo "GCC version: $(gcc --version | head -1)"
+            fi
           else
             echo "Error: No supported package manager found (apt-get or dnf)"
             exit 1
@@ -210,12 +220,22 @@ jobs:
               unzip \
               zip \
               git \
-              gcc \
-              gcc-c++ \
+              gcc-toolset-13-gcc \
+              gcc-toolset-13-gcc-c++ \
               clang \
               ninja-build \
               time \
               patchelf
+            # Activate gcc-toolset-13 for CUDA compatibility
+            if [ -f /opt/rh/gcc-toolset-13/enable ]; then
+              # Export PATH and other env vars to GITHUB_ENV for subsequent steps
+              source /opt/rh/gcc-toolset-13/enable
+              echo "PATH=$PATH" >> $GITHUB_ENV
+              echo "LD_LIBRARY_PATH=${LD_LIBRARY_PATH:-}" >> $GITHUB_ENV
+              echo "CC=$(which gcc)" >> $GITHUB_ENV
+              echo "CXX=$(which g++)" >> $GITHUB_ENV
+              echo "GCC version: $(gcc --version | head -1)"
+            fi
           else
             echo "Error: No supported package manager found (apt-get or dnf)"
             exit 1