build: cmake: unsupported compilers cleanup

README.md

@@ -295,9 +295,9 @@ Runtime-specific dependencies:
 
 ### Validated Configurations
 
-CPU engine was validated on RedHat\* Enterprise Linux 8 with
-* GNU Compiler Collection 5.4, 6.1, 7.2, 8.1, 9.1, 11.1, 11.3
-* Clang\* 7.1, 8.0, 9.0, 14.0.6
+x86-64 CPU engine was validated on RedHat\* Enterprise Linux 8 with
+* GNU Compiler Collection 8.5, 9.5, 11.1, 11.3
+* Clang\* 11.0, 14.0.6
 * [Intel oneAPI DPC++/C++ Compiler] 2024.0
 
 on Windows Server\* 2019 with
@@ -307,16 +307,19 @@ on Windows Server\* 2019 with
 on macOS 11 (Big Sur) with
 * Apple LLVM version 13.0
 
-on Ubuntu 20.04 AArch64 with
-* GNU Compiler Collection 7.0, 8.0, 9.0, 10.0
-* Clang\* 9.0, 17.0
+AArch64 CPU engine was validated on Ubuntu 22.04 with
+* GNU Compiler Collection 10.0, 13.0
+* Clang\* 17.0
 * [Arm Compiler for Linux] 24.04
 * [Arm Compute Library (ACL)] built for armv8-a arch, latest stable version
 available at the time of release
 
+on macOS 14 (Sonoma) with
+* Apple LLVM version 15.0
+
 GPU engine was validated on Ubuntu\* 22.04 with
-* GNU Compiler Collection 7.2, 8.1, and 9.1
-* Clang 7.1, 8.0, 9.0
+* GNU Compiler Collection 8.5, and 9.5
+* Clang 11.0
 * [Intel oneAPI DPC++/C++ Compiler] 2024.0
 * [Intel Software for General Purpose GPU capabilities] latest stable version
 available at the time of release

cmake/OpenMP.cmake

@@ -1,5 +1,5 @@
 #===============================================================================
-# Copyright 2017-2024 Intel Corporation
+# Copyright 2017-2025 Intel Corporation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -52,13 +52,6 @@ if(NOT OpenMP_CXX_FOUND AND MSVC AND CMAKE_CXX_COMPILER_ID MATCHES "(Clang|Intel
         # The ICX driver doesn't link OpenMP library even if `/Qopenmp`
         # was specified.
         set(OpenMP_FLAGS "/Qopenmp -Xclang --dependent-lib=libiomp5md")
-    else()
-        if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "10.0")
-            # version < 10 can't pass cl-style `/openmp` flag
-            set(OpenMP_FLAGS "-Xclang -fopenmp")
-            # ... and requires explicit linking against omp library
-            set(OpenMP_CXX_LIBRARIES "libomp.lib")
-        endif()
     endif()
     set(OpenMP_C_FLAGS ${OpenMP_FLAGS})
     set(OpenMP_CXX_FLAGS ${OpenMP_FLAGS})

cmake/SDL.cmake

@@ -1,5 +1,5 @@
 #===============================================================================
-# Copyright 2017-2024 Intel Corporation
+# Copyright 2017-2025 Intel Corporation
 # Copyright 2021 FUJITSU LIMITED
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -30,14 +30,10 @@ macro(sdl_unix_common_ccxx_flags var)
     append(${var} "-fPIC -Wformat -Wformat-security")
 endmacro()
 
-macro(sdl_gnu_common_ccxx_flags var gnu_version)
-    if(${gnu_version} VERSION_LESS 4.9)
-        append(${var} "-fstack-protector-all")
-    else()
-        append(${var} "-fstack-protector-strong")
-        if(NOT (${gnu_version} VERSION_LESS 8.0) AND (DNNL_TARGET_ARCH STREQUAL "X64"))
-            append(${var} "-fcf-protection=full")
-        endif()
+macro(sdl_gnu_common_ccxx_flags var)
+    append(${var} "-fstack-protector-strong")
+    if(DNNL_TARGET_ARCH STREQUAL "X64")
+        append(${var} "-fcf-protection=full")
     endif()
 endmacro()
 
@@ -65,7 +61,7 @@ if(UNIX)
         append(ONEDNN_SDL_COMPILER_FLAGS "-D_FORTIFY_SOURCE=2")
     endif()
     if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
-        sdl_gnu_common_ccxx_flags(ONEDNN_SDL_COMPILER_FLAGS CMAKE_CXX_COMPILER_VERSION)
+        sdl_gnu_common_ccxx_flags(ONEDNN_SDL_COMPILER_FLAGS)
         sdl_gnu_src_ccxx_flags(CMAKE_SRC_CCXX_FLAGS)
         sdl_gnu_example_ccxx_flags(CMAKE_EXAMPLE_CCXX_FLAGS)
     elseif(CMAKE_CXX_COMPILER_ID MATCHES "(Apple)?[Cc]lang")

cmake/coverage.cmake

@@ -1,5 +1,5 @@
 #===============================================================================
-# Copyright 2019-2024 Intel Corporation
+# Copyright 2019-2025 Intel Corporation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -36,11 +36,7 @@ if("${DNNL_CODE_COVERAGE}" STREQUAL "GCOV")
         message(FATAL_ERROR "GCOV not found in path")
     endif()
 
-    if(CMAKE_CXX_COMPILER_ID MATCHES "(Apple)?[Cc]lang")
-        if("${CMAKE_CXX_COMPILER_VERSION}" VERSION_LESS 3)
-            message(FATAL_ERROR "Clang version must be 3.0.0 or greater! Aborting...")
-        endif()
-    elseif(NOT "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
+    if(NOT CMAKE_CXX_COMPILER_ID MATCHES "(Apple)?[Cc]lang|GNU")
         message(FATAL_ERROR "Unsupported compiler: ${CMAKE_CXX_COMPILER_ID}")
     endif()
 

cmake/host_compiler.cmake

@@ -1,5 +1,5 @@
 #===============================================================================
-# Copyright 2021-2024 Intel Corporation
+# Copyright 2021-2025 Intel Corporation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -78,7 +78,7 @@ if(DPCPP_HOST_COMPILER_KIND MATCHES "^(GNU|CLANG)$")
 
     if(DPCPP_HOST_COMPILER_KIND STREQUAL "GNU")
         platform_gnu_nowarn_ccxx_flags(DPCPP_CXX_NOWARN_FLAGS ${DPCPP_HOST_COMPILER_MAJOR_VER}.${DPCPP_HOST_COMPILER_MINOR_VER})
-        sdl_gnu_common_ccxx_flags(DPCPP_HOST_COMPILER_OPTS DPCPP_HOST_COMPILER_VER)
+        sdl_gnu_common_ccxx_flags(DPCPP_HOST_COMPILER_OPTS)
         sdl_gnu_src_ccxx_flags(DPCPP_SRC_CXX_FLAGS)
         sdl_gnu_example_ccxx_flags(DPCPP_EXAMPLE_CXX_FLAGS)
 

cmake/host_compiler_id.cmake

@@ -1,5 +1,5 @@
 #===============================================================================
-# Copyright 2024 Intel Corporation
+# Copyright 2024-2025 Intel Corporation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -98,13 +98,13 @@ message(STATUS "Host compiler version: ${DPCPP_HOST_COMPILER_MAJOR_VER}.${DPCPP_
 
 # Check the version of the provided host compiler.
 if(DPCPP_HOST_COMPILER_KIND STREQUAL "GNU")
-    if((DPCPP_HOST_COMPILER_MAJOR_VER LESS 7) OR (DPCPP_HOST_COMPILER_MAJOR_VER EQUAL 7 AND DPCPP_HOST_COMPILER_MINOR_VER LESS 4))
-        message(FATAL_ERROR "The minimum version of ${DPCPP_HOST_COMPILER_KIND} host compiler is 7.4.")
+    if(DPCPP_HOST_COMPILER_MAJOR_VER LESS 8)
+        message(FATAL_ERROR "The minimum version of ${DPCPP_HOST_COMPILER_KIND} host compiler is 8.0.")
     endif()
 endif()
 
 if(DPCPP_HOST_COMPILER_KIND STREQUAL "CLANG")
-    if(DPCPP_HOST_COMPILER_MAJOR_VER LESS 8)
-        message(FATAL_ERROR "The minimum version of ${DPCPP_HOST_COMPILER_KIND} host compiler is 8.0.")
+    if(DPCPP_HOST_COMPILER_MAJOR_VER LESS 11)
+        message(FATAL_ERROR "The minimum version of ${DPCPP_HOST_COMPILER_KIND} host compiler is 11.0.")
     endif()
 endif()

cmake/platform.cmake

@@ -362,12 +362,6 @@ elseif(UNIX OR MINGW)
             append(CMAKE_CCXX_FLAGS "-Wno-ignored-attributes")
         endif()
 
-        # XXX: Suppress an erroneous warning of nested lambda visibility
-        #  exceeding that of the containing class (GCC Bugzilla - Bug 80947).
-        if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8 AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 6.0)
-            append(CMAKE_CCXX_FLAGS "-Wno-attributes")
-        endif()
-
         if(DNNL_TARGET_ARCH STREQUAL "AARCH64")
             if (NOT CMAKE_BUILD_TYPE STREQUAL "Debug")
                 set(DEF_ARCH_OPT_FLAGS "-O3")
@@ -486,10 +480,5 @@ if (DNNL_TARGET_ARCH STREQUAL "RV64")
     message(STATUS "DNNL_RISCV_USE_RVV_INTRINSICS: ${DNNL_RISCV_USE_RVV_INTRINSICS}")
 endif()
 
-# Old compiler versions do not support warnings available on newer compilers.
-if(CMAKE_CXX_COMPILER_ID MATCHES "(Apple)?[Cc]lang" AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 8.0.0)
-    append(CMAKE_CCXX_FLAGS "-Wno-unknown-warning-option")
-endif()
-
 append(CMAKE_C_FLAGS "${CMAKE_CCXX_FLAGS}")
 append(CMAKE_CXX_FLAGS "${CMAKE_CCXX_FLAGS}")

src/common/compiler_workarounds.hpp

@@ -1,5 +1,5 @@
 /*******************************************************************************
-* Copyright 2020-2024 Intel Corporation
+* Copyright 2020-2025 Intel Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -17,11 +17,6 @@
 #ifndef COMPILER_WORKAROUNDS_HPP
 #define COMPILER_WORKAROUNDS_HPP
 
-#if (defined __GNUC__) && (!defined(__INTEL_COMPILER)) \
-        && (!defined(__INTEL_LLVM_COMPILER)) && (!defined(__clang__major__))
-#define NEED_GCC_WA_CHECK 1
-#endif
-
 // Workaround 01: clang.
 //
 // Clang has an issue [1] with `#pragma omp simd` that might lead to segfault.
@@ -32,48 +27,23 @@
 // vectorization for clang altogether for now.
 //
 // [1] https://bugs.llvm.org/show_bug.cgi?id=48104
-#if (defined __clang_major__) && (__clang_major__ >= 6)
+#if (defined __clang_major__) && (__clang_major__ < 13)
 #define CLANG_WA_01_SAFE_TO_USE_OMP_SIMD 0
 #else
 #define CLANG_WA_01_SAFE_TO_USE_OMP_SIMD 1
 #endif
 
 // Workaround 02: clang.
 //
-// Clang 6+ generates incorrect code with OMP_SIMD in some particular cases.
+// Clang generates incorrect code with OMP_SIMD in some particular cases.
 // Unlike CLANG_WA_01_SAFE_TO_USE_OMP_SIMD, the issue happens even with -O3.
-#if (defined __clang_major__) && (__clang_major__ >= 6)
+#if (defined __clang_major__) && (__clang_major__ < 13)
 #define CLANG_WA_02_SAFE_TO_USE_OMP_SIMD 0
 #else
 #define CLANG_WA_02_SAFE_TO_USE_OMP_SIMD 1
 #endif
 
-// Workaround 03: GCC
-//
-// For very large functions with too much control flow (i.e. if, switch, goto
-// statements), GCC 7 may struggle to perform optimizations based on tree
-// dominator (i.e. -ftree-dominator-opts, which is enabled with O1), thereby
-// producing an internal compiler error (ICE). Specifically, it seems that the
-// jump threading optimization is the culprit, which cannot be disabled on its
-// own. There is no reliable way to reproduce the ICE, therefore it is not clear
-// which __GCC_MINOR__ version fixes issue.
-#if (defined NEED_GCC_WA_CHECK) && (__GNUC__ == 7)
-#define GCC_WA_NO_TREE_DOMINATOR_OPTS 1
-#else
-#define GCC_WA_NO_TREE_DOMINATOR_OPTS 0
-#endif
-
-// Workaround 05: GCC
-//
-// NOTE: inside lambda, type cast variables captured by reference using
-// either c-like "(type)var" or functional "type(var)" notation in order
-// to avoid gcc7 bug with c++14 standard
-// (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83204).
-#if (defined NEED_GCC_WA_CHECK) && (__GNUC__ <= 7)
-#define GCC_WA_LAMBDA_C_CAST
-#endif
-
-// Workaround 05: c++17 vs c++20
+// Workaround 03: MSVC c++17 vs c++20
 //
 // C++17/20 are contradictory wrt capturing this and using default '=' capture.
 // - C++17 and before have to return a warning for the [=, this] capture as

src/common/dnnl_thread.hpp

@@ -1,5 +1,5 @@
 /*******************************************************************************
-* Copyright 2017-2023 Intel Corporation
+* Copyright 2017-2025 Intel Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -192,18 +192,6 @@ inline int dnnl_get_current_num_threads() {
 #define PRAGMA_OMP_SIMD(...) PRAGMA_MACRO(CHAIN2(omp, simd __VA_ARGS__))
 #endif // defined(_MSC_VER) && !defined(__clang__) && !defined(__INTEL_COMPILER)
 
-// process simdlen; it is supported for Clang >= 3.9; ICC >= 17.0; GCC >= 6.1
-// No support on Windows.
-#if (defined(__clang_major__) \
-        && (__clang_major__ < 3 \
-                || (__clang_major__ == 3 && __clang_minor__ < 9))) \
-        || (defined(__INTEL_COMPILER) && __INTEL_COMPILER < 1700) \
-        || (!defined(__INTEL_COMPILER) && !defined(__clang__) \
-                && (defined(_MSC_VER) || __GNUC__ < 6 \
-                        || (__GNUC__ == 6 && __GNUC_MINOR__ < 1)))
-#define simdlen(x)
-#endif // long simdlen if
-
 namespace dnnl {
 namespace impl {
 

src/common/primitive_attr_quant.hpp

@@ -1,5 +1,5 @@
 /*******************************************************************************
-* Copyright 2024 Intel Corporation
+* Copyright 2024-2025 Intel Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -42,10 +42,7 @@ struct runtime_scales_t;
 const runtime_scales_t &default_runtime_scale();
 
 struct runtime_scales_t : public c_compatible {
-    // Clang-3.8.1 raises an error for a default initialization of a const
-    // object. Const runtime_scales_t object is used as default_scales.
-    // runtime_scales_t() = default;
-    runtime_scales_t() {}
+    runtime_scales_t() = default;
 
     runtime_scales_t &operator=(const runtime_scales_t &rhs) {
         mask_ = rhs.mask_;

src/cpu/matmul/gemm_bf16_matmul.cpp

@@ -1,5 +1,5 @@
 /*******************************************************************************
-* Copyright 2019-2024 Intel Corporation
+* Copyright 2019-2025 Intel Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -271,11 +271,7 @@ status_t gemm_bf16_matmul_t<dst_type>::execute_ref(
         const dim_t acc_stride = gemm_based::get_scratchpad_block_elements(
                 batch, M, N, use_single_gemm_call, nthr);
 
-#ifdef GCC_WA_LAMBDA_C_CAST
-        parallel(nthr, [= WA_THIS_COPY_CAPTURE, &st](int ithr, int nthr) {
-#else
         parallel(nthr, [&](int ithr, int nthr) {
-#endif
             size_t t_work_start {0}, t_work_end {0};
             balance211(work_amount, nthr, ithr, t_work_start, t_work_end);
 

src/cpu/matmul/gemm_x8s8s32x_matmul.cpp

@@ -1,5 +1,5 @@
 /*******************************************************************************
-* Copyright 2019-2024 Intel Corporation
+* Copyright 2019-2025 Intel Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -297,11 +297,7 @@ status_t gemm_x8s8s32x_matmul_t::execute_ref(const exec_ctx_t &ctx) const {
         bool postops_in_matmul = need_post_processing(pd(), dst_zero_point_f32);
         assert(IMPLICATION(postops_in_matmul, params.has_pp_kernel_));
 
-#ifdef GCC_WA_LAMBDA_C_CAST
-        parallel(nthr, [= WA_THIS_COPY_CAPTURE, &st](int ithr, int nthr) {
-#else
         parallel(nthr, [&](int ithr, int nthr) {
-#endif
             size_t t_work_start {0}, t_work_end {0};
             balance211(work_amount, nthr, ithr, t_work_start, t_work_end);
 

src/cpu/x64/gemm/amx/jit_avx512_core_amx_copy_kern.hpp

@@ -1,5 +1,5 @@
 /*******************************************************************************
-* Copyright 2020-2021 Intel Corporation
+* Copyright 2020-2025 Intel Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -66,7 +66,7 @@ class jit_avx512_core_amx_copy_kern : public jit_generator {
     void copy_n(int unroll_n, Xbyak::Label &epilogue);
     void copy_ns(int unroll_n, Xbyak::Label &epilogue);
 
-    void generate() override ATTRIBUTE_OPTIMIZE;
+    void generate() override;
 
 private:
     static const int offset_a_ = 0, offset_b_ = 0;

src/cpu/x64/gemm/amx/jit_avx512_core_amx_gemm_kern.hpp

@@ -1,5 +1,5 @@
 /*******************************************************************************
-* Copyright 2020-2021 Intel Corporation
+* Copyright 2020-2025 Intel Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -31,7 +31,7 @@ class jit_avx512_core_amx_gemm_kern : public jit_generator {
     DECLARE_CPU_JIT_AUX_FUNCTIONS(jit_avx512_core_amx_gemm_kern);
 
 protected:
-    void generate() override ATTRIBUTE_OPTIMIZE;
+    void generate() override;
     const int typea;
     const int typeb;
     const int typec;