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Message-Id: <20250407094116.1339199-2-arnd@kernel.org>
Date: Mon, 7 Apr 2025 11:41:13 +0200
From: Arnd Bergmann <arnd@...nel.org>
To: linux-kbuild@...r.kernel.org
Cc: Arnd Bergmann <arnd@...db.de>,
"H. Peter Anvin" <hpa@...or.com>,
Ard Biesheuvel <ardb@...nel.org>,
Borislav Petkov <bp@...en8.de>,
Brian Gerst <brgerst@...il.com>,
Catalin Marinas <catalin.marinas@....com>,
Dave Hansen <dave.hansen@...ux.intel.com>,
Herbert Xu <herbert@...dor.apana.org.au>,
Ingo Molnar <mingo@...hat.com>,
Jonathan Corbet <corbet@....net>,
Marc Zyngier <maz@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Masahiro Yamada <masahiroy@...nel.org>,
Nathan Chancellor <nathan@...nel.org>,
Nicolas Schier <nicolas@...sle.eu>,
Takashi Iwai <tiwai@...e.com>,
Thomas Gleixner <tglx@...utronix.de>,
Uros Bizjak <ubizjak@...il.com>,
Will Deacon <will@...nel.org>,
linux-arm-kernel@...ts.infradead.org,
linux-crypto@...r.kernel.org,
linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-raid@...r.kernel.org,
x86@...nel.org
Subject: [PATCH 1/4] kbuild: require gcc-8 and binutils-2.30
From: Arnd Bergmann <arnd@...db.de>
Commit a3e8fe814ad1 ("x86/build: Raise the minimum GCC version to 8.1")
raised the minimum compiler version as enforced by Kbuild to gcc-8.1
and clang-15 for x86.
This is actually the same gcc version that has been discussed as the
minimum for all architectures several times in the past, with little
objection. A previous concern was the kernel for SLE15-SP7 needing to
be built with gcc-7. As this ended up still using linux-6.4 and there
is no plan for an SP8, this is no longer a problem.
Change it for all architectures and adjust the documentation accordingly.
A few version checks can be removed in the process. The binutils
version 2.30 is the lowest version used in combination with gcc-8 on
common distros, so use that as the corresponding minimum.
Link: https://lore.kernel.org/lkml/20240925150059.3955569-32-ardb+git@google.com/
Link: https://lore.kernel.org/lkml/871q7yxrgv.wl-tiwai@suse.de/
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
Documentation/admin-guide/README.rst | 2 +-
Documentation/kbuild/makefiles.rst | 4 +-
Documentation/process/changes.rst | 4 +-
.../translations/it_IT/process/changes.rst | 4 +-
.../translations/zh_CN/admin-guide/README.rst | 2 +-
arch/um/Makefile | 4 +-
include/linux/unroll.h | 4 +-
kernel/gcov/gcc_4_7.c | 4 --
lib/test_fortify/Makefile | 5 +--
scripts/Makefile.compiler | 2 +-
scripts/gcc-plugins/gcc-common.h | 45 -------------------
scripts/min-tool-version.sh | 6 +--
12 files changed, 14 insertions(+), 72 deletions(-)
diff --git a/Documentation/admin-guide/README.rst b/Documentation/admin-guide/README.rst
index 70b02f30013a..05301f03b717 100644
--- a/Documentation/admin-guide/README.rst
+++ b/Documentation/admin-guide/README.rst
@@ -259,7 +259,7 @@ Configuring the kernel
Compiling the kernel
--------------------
- - Make sure you have at least gcc 5.1 available.
+ - Make sure you have at least gcc 8.1 available.
For more information, refer to :ref:`Documentation/process/changes.rst <changes>`.
- Do a ``make`` to create a compressed kernel image. It is also possible to do
diff --git a/Documentation/kbuild/makefiles.rst b/Documentation/kbuild/makefiles.rst
index 3b9a8bc671e2..38cc656fac20 100644
--- a/Documentation/kbuild/makefiles.rst
+++ b/Documentation/kbuild/makefiles.rst
@@ -625,10 +625,10 @@ gcc-min-version
Example::
- cflags-$(call gcc-min-version, 70100) := -foo
+ cflags-$(call gcc-min-version, 110100) := -foo
In this example, cflags-y will be assigned the value -foo if $(CC) is gcc and
- $(CONFIG_GCC_VERSION) is >= 7.1.
+ $(CONFIG_GCC_VERSION) is >= 11.1.
clang-min-version
clang-min-version tests if the value of $(CONFIG_CLANG_VERSION) is greater
diff --git a/Documentation/process/changes.rst b/Documentation/process/changes.rst
index d564362773b5..41b1431f5a6b 100644
--- a/Documentation/process/changes.rst
+++ b/Documentation/process/changes.rst
@@ -29,13 +29,13 @@ you probably needn't concern yourself with pcmciautils.
====================== =============== ========================================
Program Minimal version Command to check the version
====================== =============== ========================================
-GNU C 5.1 gcc --version
+GNU C 8.1 gcc --version
Clang/LLVM (optional) 13.0.1 clang --version
Rust (optional) 1.78.0 rustc --version
bindgen (optional) 0.65.1 bindgen --version
GNU make 4.0 make --version
bash 4.2 bash --version
-binutils 2.25 ld -v
+binutils 2.30 ld -v
flex 2.5.35 flex --version
bison 2.0 bison --version
pahole 1.16 pahole --version
diff --git a/Documentation/translations/it_IT/process/changes.rst b/Documentation/translations/it_IT/process/changes.rst
index c7d05e2fff15..2e203fbd1785 100644
--- a/Documentation/translations/it_IT/process/changes.rst
+++ b/Documentation/translations/it_IT/process/changes.rst
@@ -32,13 +32,13 @@ PC Card, per esempio, probabilmente non dovreste preoccuparvi di pcmciautils.
====================== ================= ========================================
Programma Versione minima Comando per verificare la versione
====================== ================= ========================================
-GNU C 5.1 gcc --version
+GNU C 8.1 gcc --version
Clang/LLVM (optional) 13.0.0 clang --version
Rust (opzionale) 1.78.0 rustc --version
bindgen (opzionale) 0.65.1 bindgen --version
GNU make 4.0 make --version
bash 4.2 bash --version
-binutils 2.25 ld -v
+binutils 2.30 ld -v
flex 2.5.35 flex --version
bison 2.0 bison --version
pahole 1.16 pahole --version
diff --git a/Documentation/translations/zh_CN/admin-guide/README.rst b/Documentation/translations/zh_CN/admin-guide/README.rst
index 1bdafdc4c8e2..82e628b77efd 100644
--- a/Documentation/translations/zh_CN/admin-guide/README.rst
+++ b/Documentation/translations/zh_CN/admin-guide/README.rst
@@ -224,7 +224,7 @@ Linux内核6.x版本 <http://kernel.org/>
编译内核
---------
- - 确保您至少有gcc 5.1可用。
+ - 确保您至少有gcc 8.1可用。
有关更多信息，请参阅 :ref:`Documentation/process/changes.rst <changes>` 。
- 执行 ``make`` 来创建压缩内核映像。如果您安装了lilo以适配内核makefile，
diff --git a/arch/um/Makefile b/arch/um/Makefile
index 1d36a613aad8..599c167890ff 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -118,9 +118,7 @@ archprepare:
$(Q)$(MAKE) $(build)=$(HOST_DIR)/um include/generated/user_constants.h
LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
-ifdef CONFIG_LD_SCRIPT_DYN
-LINK-$(call gcc-min-version, 60100)$(CONFIG_CC_IS_CLANG) += -no-pie
-endif
+LINK-$(CONFIG_LD_SCRIPT_DYN) += -no-pie
LINK-$(CONFIG_LD_SCRIPT_DYN_RPATH) += -Wl,-rpath,/lib
CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \
diff --git a/include/linux/unroll.h b/include/linux/unroll.h
index 863fb69f6a7e..186b71de740f 100644
--- a/include/linux/unroll.h
+++ b/include/linux/unroll.h
@@ -11,10 +11,8 @@
#ifdef CONFIG_CC_IS_CLANG
#define __pick_unrolled(x, y) _Pragma(#x)
-#elif CONFIG_GCC_VERSION >= 80000
-#define __pick_unrolled(x, y) _Pragma(#y)
#else
-#define __pick_unrolled(x, y) /* not supported */
+#define __pick_unrolled(x, y) _Pragma(#y)
#endif
/**
diff --git a/kernel/gcov/gcc_4_7.c b/kernel/gcov/gcc_4_7.c
index fd75b4a484d7..a08cc076f332 100644
--- a/kernel/gcov/gcc_4_7.c
+++ b/kernel/gcov/gcc_4_7.c
@@ -22,10 +22,6 @@
#define GCOV_COUNTERS 9
#elif (__GNUC__ >= 10)
#define GCOV_COUNTERS 8
-#elif (__GNUC__ >= 7)
-#define GCOV_COUNTERS 9
-#elif (__GNUC__ > 5) || (__GNUC__ == 5 && __GNUC_MINOR__ >= 1)
-#define GCOV_COUNTERS 10
#else
#define GCOV_COUNTERS 9
#endif
diff --git a/lib/test_fortify/Makefile b/lib/test_fortify/Makefile
index 1c3f82ad8bb2..399cae880e1d 100644
--- a/lib/test_fortify/Makefile
+++ b/lib/test_fortify/Makefile
@@ -18,10 +18,7 @@ quiet_cmd_gen_fortify_log = CAT $@
$(obj)/test_fortify.log: $(addprefix $(obj)/, $(logs)) FORCE
$(call if_changed,gen_fortify_log)
-# GCC<=7 does not always produce *.d files.
-# Run the tests only for GCC>=8 or Clang.
-always-$(call gcc-min-version, 80000) += test_fortify.log
-always-$(CONFIG_CC_IS_CLANG) += test_fortify.log
+always-y += test_fortify.log
# Some architectures define __NO_FORTIFY if __SANITIZE_ADDRESS__ is undefined.
# Pass CFLAGS_KASAN to avoid warnings.
diff --git a/scripts/Makefile.compiler b/scripts/Makefile.compiler
index 8956587b8547..d74fad494b5b 100644
--- a/scripts/Makefile.compiler
+++ b/scripts/Makefile.compiler
@@ -60,7 +60,7 @@ cc-option-yn = $(if $(call cc-option,$1),y,n)
cc-disable-warning = $(if $(call cc-option,-W$(strip $1)),-Wno-$(strip $1))
# gcc-min-version
-# Usage: cflags-$(call gcc-min-version, 70100) += -foo
+# Usage: cflags-$(call gcc-min-version, 110100) += -foo
gcc-min-version = $(call test-ge, $(CONFIG_GCC_VERSION), $1)
# clang-min-version
diff --git a/scripts/gcc-plugins/gcc-common.h b/scripts/gcc-plugins/gcc-common.h
index 3222c1070444..3fdaf1c4b258 100644
--- a/scripts/gcc-plugins/gcc-common.h
+++ b/scripts/gcc-plugins/gcc-common.h
@@ -3,11 +3,7 @@
#define GCC_COMMON_H_INCLUDED
#include "bversion.h"
-#if BUILDING_GCC_VERSION >= 6000
#include "gcc-plugin.h"
-#else
-#include "plugin.h"
-#endif
#include "plugin-version.h"
#include "config.h"
#include "system.h"
@@ -39,9 +35,7 @@
#include "hash-map.h"
-#if BUILDING_GCC_VERSION >= 7000
#include "memmodel.h"
-#endif
#include "emit-rtl.h"
#include "debug.h"
#include "target.h"
@@ -74,9 +68,7 @@
#include "context.h"
#include "tree-ssa-alias.h"
#include "tree-ssa.h"
-#if BUILDING_GCC_VERSION >= 7000
#include "tree-vrp.h"
-#endif
#include "tree-ssanames.h"
#include "print-tree.h"
#include "tree-eh.h"
@@ -149,16 +141,6 @@ static inline opt_pass *get_pass_for_id(int id)
return g->get_passes()->get_pass_for_id(id);
}
-#if BUILDING_GCC_VERSION < 6000
-/* gimple related */
-template <>
-template <>
-inline bool is_a_helper<const gassign *>::test(const_gimple gs)
-{
- return gs->code == GIMPLE_ASSIGN;
-}
-#endif
-
#define TODO_verify_ssa TODO_verify_il
#define TODO_verify_flow TODO_verify_il
#define TODO_verify_stmts TODO_verify_il
@@ -181,7 +163,6 @@ static inline const char *get_decl_section_name(const_tree decl)
#define varpool_get_node(decl) varpool_node::get(decl)
#define dump_varpool_node(file, node) (node)->dump(file)
-#if BUILDING_GCC_VERSION >= 8000
#define cgraph_create_edge(caller, callee, call_stmt, count, freq) \
(caller)->create_edge((callee), (call_stmt), (count))
@@ -189,15 +170,6 @@ static inline const char *get_decl_section_name(const_tree decl)
old_call_stmt, call_stmt, count, freq, reason) \
(caller)->create_edge_including_clones((callee), \
(old_call_stmt), (call_stmt), (count), (reason))
-#else
-#define cgraph_create_edge(caller, callee, call_stmt, count, freq) \
- (caller)->create_edge((callee), (call_stmt), (count), (freq))
-
-#define cgraph_create_edge_including_clones(caller, callee, \
- old_call_stmt, call_stmt, count, freq, reason) \
- (caller)->create_edge_including_clones((callee), \
- (old_call_stmt), (call_stmt), (count), (freq), (reason))
-#endif
typedef struct cgraph_node *cgraph_node_ptr;
typedef struct cgraph_edge *cgraph_edge_p;
@@ -293,14 +265,12 @@ static inline void cgraph_call_edge_duplication_hooks(cgraph_edge *cs1, cgraph_e
symtab->call_edge_duplication_hooks(cs1, cs2);
}
-#if BUILDING_GCC_VERSION >= 6000
typedef gimple *gimple_ptr;
typedef const gimple *const_gimple_ptr;
#define gimple gimple_ptr
#define const_gimple const_gimple_ptr
#undef CONST_CAST_GIMPLE
#define CONST_CAST_GIMPLE(X) CONST_CAST(gimple, (X))
-#endif
/* gimple related */
static inline gimple gimple_build_assign_with_ops(enum tree_code subcode, tree lhs, tree op1, tree op2 MEM_STAT_DECL)
@@ -400,15 +370,7 @@ static inline void ipa_remove_stmt_references(symtab_node *referring_node, gimpl
referring_node->remove_stmt_references(stmt);
}
-#if BUILDING_GCC_VERSION < 6000
-#define get_inner_reference(exp, pbitsize, pbitpos, poffset, pmode, punsignedp, preversep, pvolatilep, keep_aligning) \
- get_inner_reference(exp, pbitsize, pbitpos, poffset, pmode, punsignedp, pvolatilep, keep_aligning)
-#define gen_rtx_set(ARG0, ARG1) gen_rtx_SET(VOIDmode, (ARG0), (ARG1))
-#endif
-
-#if BUILDING_GCC_VERSION >= 6000
#define gen_rtx_set(ARG0, ARG1) gen_rtx_SET((ARG0), (ARG1))
-#endif
#ifdef __cplusplus
static inline void debug_tree(const_tree t)
@@ -425,15 +387,8 @@ static inline void debug_gimple_stmt(const_gimple s)
#define debug_gimple_stmt(s) debug_gimple_stmt(CONST_CAST_GIMPLE(s))
#endif
-#if BUILDING_GCC_VERSION >= 7000
#define get_inner_reference(exp, pbitsize, pbitpos, poffset, pmode, punsignedp, preversep, pvolatilep, keep_aligning) \
get_inner_reference(exp, pbitsize, pbitpos, poffset, pmode, punsignedp, preversep, pvolatilep)
-#endif
-
-#if BUILDING_GCC_VERSION < 7000
-#define SET_DECL_ALIGN(decl, align) DECL_ALIGN(decl) = (align)
-#define SET_DECL_MODE(decl, mode) DECL_MODE(decl) = (mode)
-#endif
#if BUILDING_GCC_VERSION >= 14000
#define last_stmt(x) last_nondebug_stmt(x)
diff --git a/scripts/min-tool-version.sh b/scripts/min-tool-version.sh
index 787868183b84..0d223b4a9445 100755
--- a/scripts/min-tool-version.sh
+++ b/scripts/min-tool-version.sh
@@ -14,15 +14,13 @@ fi
case "$1" in
binutils)
- echo 2.25.0
+ echo 2.30.0
;;
gcc)
if [ "$ARCH" = parisc64 ]; then
echo 12.0.0
- elif [ "$SRCARCH" = x86 ]; then
- echo 8.1.0
else
- echo 5.1.0
+ echo 8.1.0
fi
;;
llvm)
--
2.39.5
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