From 09b7d2ed46c6e143fe888a6c22e6c9f92027e0ed Mon Sep 17 00:00:00 2001
From: Daniel Bevenius <daniel.bevenius@gmail.com>
Date: Mon, 31 Aug 2026 15:17:26 +0200
Subject: [PATCH] ggml : add exclude for GCC + SVE on ARM

Refs: https://github.com/ggml-org/llama.cpp/actions/runs/33393906061/job/99493756214?pr=28091
---
 ggml/src/ggml-cpu/CMakeLists.txt | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/ggml/src/ggml-cpu/CMakeLists.txt b/ggml/src/ggml-cpu/CMakeLists.txt
index de01df71ce..a3ea09f8c8 100644
--- a/ggml/src/ggml-cpu/CMakeLists.txt
+++ b/ggml/src/ggml-cpu/CMakeLists.txt
@@ -56,7 +56,6 @@ function(ggml_add_cpu_backend_variant_impl tag_name)
 
     target_compile_features(${GGML_CPU_NAME} PRIVATE c_std_11 cxx_std_17)
     target_include_directories(${GGML_CPU_NAME} PRIVATE . ggml-cpu)
-    target_precompile_headers (${GGML_CPU_NAME} PRIVATE ggml-impl.h)
 
     if (APPLE AND GGML_ACCELERATE)
         find_library(ACCELERATE_FRAMEWORK Accelerate)
@@ -668,6 +667,12 @@ function(ggml_add_cpu_backend_variant_impl tag_name)
     target_compile_options(${GGML_CPU_NAME} PRIVATE ${ARCH_FLAGS})
     target_compile_definitions(${GGML_CPU_NAME} PRIVATE ${ARCH_DEFINITIONS})
 
+    if (CMAKE_C_COMPILER_ID STREQUAL "GNU" AND GGML_SYSTEM_ARCH STREQUAL "ARM" AND HAVE_SVE)
+        message(STATUS "Skipping PCH for ${GGML_CPU_NAME}: GCC + SVE is known to trigger an internal compiler error with PCH")
+    else()
+        target_precompile_headers(${GGML_CPU_NAME} PRIVATE ggml-impl.h)
+    endif()
+
     if (EMSCRIPTEN)
         set_target_properties(${GGML_CPU_NAME} PROPERTIES COMPILE_FLAGS "-msimd128")
     endif()