From 2e88c49c90f0add8796f633fea8c3d65b975f295 Mon Sep 17 00:00:00 2001 From: shalinib-ibm Date: Thu, 18 Jun 2026 00:15:19 +0530 Subject: [PATCH] ggml-cpu: Conditionally enable power11 backend based on compiler support (#24687) * ggml: Conditionally enable power11 backend based on compiler support Guard POWER11 backend creation behind a compiler flag check for -mcpu=power11. This avoids build failures on current GCC/Clang toolchains while preserving forward compatibility once POWER11 support becomes available. * Update CMakeLists.txt ggml-cpu: Use -mcpu=power10 for P10 and P11 --- ggml/src/CMakeLists.txt | 9 ++++++++- ggml/src/ggml-cpu/CMakeLists.txt | 2 +- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/ggml/src/CMakeLists.txt b/ggml/src/CMakeLists.txt index c26c3f147..89e5180d9 100644 --- a/ggml/src/CMakeLists.txt +++ b/ggml/src/CMakeLists.txt @@ -438,7 +438,14 @@ if (GGML_CPU_ALL_VARIANTS) ggml_add_cpu_backend_variant(power8_2 POWER8 VSX) ggml_add_cpu_backend_variant(power9 POWER9 VSX) ggml_add_cpu_backend_variant(power10 POWER10 VSX) - ggml_add_cpu_backend_variant(power11 POWER11 VSX) + # POWER11 backend: only if compiler supports -mcpu=power11 + check_cxx_compiler_flag("-mcpu=power11" GGML_CXX_SUPPORTS_POWER11) + if (GGML_CXX_SUPPORTS_POWER11) + message(STATUS "Compiler supports -mcpu=power11, enabling POWER11 backend") + ggml_add_cpu_backend_variant(power11 POWER11 VSX) + else() + message(STATUS "Skipping POWER11 backend: compiler does not support -mcpu=power11") + endif() else() message(FATAL_ERROR "Unsupported PowerPC target OS: ${CMAKE_SYSTEM_NAME}") endif() diff --git a/ggml/src/ggml-cpu/CMakeLists.txt b/ggml/src/ggml-cpu/CMakeLists.txt index 8c735a045..f7c557af4 100644 --- a/ggml/src/ggml-cpu/CMakeLists.txt +++ b/ggml/src/ggml-cpu/CMakeLists.txt @@ -389,7 +389,7 @@ function(ggml_add_cpu_backend_variant_impl tag_name) string(REGEX MATCHALL "POWER *([0-9]+)" MATCHED_STRING "${POWER10_M_UPPER}") string(REGEX REPLACE "POWER *([0-9]+)" "\\1" EXTRACTED_NUMBER "${MATCHED_STRING}") - if (EXTRACTED_NUMBER GREATER_EQUAL 10) + if (EXTRACTED_NUMBER EQUAL 10 OR EXTRACTED_NUMBER EQUAL 11) list(APPEND ARCH_FLAGS -mcpu=power10) elseif (EXTRACTED_NUMBER EQUAL 9) list(APPEND ARCH_FLAGS -mcpu=power9)