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openwrt/target/linux/generic/hack-6.6/200-tools_portability.patch
Robert Marko dbb6698721 kernel: fix x86 compilation on macOS 
Trying to compile x86 or x86_64 on macOS will fail with:
openwrt/build_dir/target-x86_64_musl/linux-x86_64/linux-6.6.36/tools/include/linux/rbtree.h:21:10: fatal error: 'linux/stddef.h' file not found

After some digging, it seems that we dropped the old 212-tools_portability
patch when 6.6 x86 support was added, then Felix added back some parts of
it in ("kernel: fix tools build breakage on macos with x86") but trying to
build x86 kernels will still fail.

So, lets add more of the required changes from the 212-tools_portability
patch so that x86 kernels build on macOS.

Fixes: 69b145188f ("generic: 6.6: Removal of tools_portability.patch already included in kernel 6.6")
Link: https://github.com/openwrt/openwrt/pull/15904
Signed-off-by: Robert Marko <robimarko@gmail.com>
2024-07-08 12:43:50 +02:00

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From a7ae4ed0a3951c45d4a59ee575951b64ae4a23fb Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@nbd.name>
Date: Tue, 7 May 2024 12:22:15 +0200
Subject: [PATCH] kernel: fix tools build breakage on macos with x86
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
--- a/tools/scripts/Makefile.include
+++ b/tools/scripts/Makefile.include
@@ -72,8 +72,6 @@ $(call allow-override,CXX,$(CROSS_COMPIL
$(call allow-override,STRIP,$(CROSS_COMPILE)strip)
endif
-CC_NO_CLANG := $(shell $(CC) -dM -E -x c /dev/null | grep -Fq "__clang__"; echo $$?)
-
ifneq ($(LLVM),)
HOSTAR ?= $(LLVM_PREFIX)llvm-ar$(LLVM_SUFFIX)
HOSTCC ?= $(LLVM_PREFIX)clang$(LLVM_SUFFIX)
@@ -84,6 +82,9 @@ HOSTCC ?= gcc
HOSTLD ?= ld
endif
+CC_NO_CLANG := $(shell $(CC) -dM -E -x c /dev/null | grep -Fq "__clang__"; echo $$?)
+HOSTCC_NO_CLANG := $(shell $(HOSTCC) -dM -E -x c /dev/null | grep -Fq "__clang__"; echo $$?)
+
# Some tools require Clang, LLC and/or LLVM utils
CLANG ?= clang
LLC ?= llc
@@ -92,8 +93,9 @@ LLVM_OBJCOPY ?= llvm-objcopy
LLVM_STRIP ?= llvm-strip
ifeq ($(CC_NO_CLANG), 1)
-EXTRA_WARNINGS += -Wstrict-aliasing=3
-
+ ifeq ($(HOSTCC_NO_CLANG), 1)
+ EXTRA_WARNINGS += -Wstrict-aliasing=3
+ endif
else ifneq ($(CROSS_COMPILE),)
# Allow userspace to override CLANG_CROSS_FLAGS to specify their own
# sysroots and flags or to avoid the GCC call in pure Clang builds.
--- a/tools/include/linux/types.h
+++ b/tools/include/linux/types.h
@@ -10,8 +10,12 @@
#define __SANE_USERSPACE_TYPES__ /* For PPC64, to get LL64 types */
#endif
+#ifndef __linux__
+#include <tools/linux_types.h>
+#else
#include <asm/types.h>
#include <asm/posix_types.h>
+#endif
struct page;
struct kmem_cache;
@@ -56,6 +60,7 @@ typedef __s8 s8;
#define __user
#endif
#define __must_check
+#undef __cold
#define __cold
typedef __u16 __bitwise __le16;
--- a/tools/objtool/include/objtool/objtool.h
+++ b/tools/objtool/include/objtool/objtool.h
@@ -12,6 +12,7 @@
#include <objtool/elf.h>
+#undef __weak
#define __weak __attribute__((weak))
struct pv_state {
--- a/tools/include/asm-generic/bitops/fls.h
+++ b/tools/include/asm-generic/bitops/fls.h
@@ -2,6 +2,8 @@
#ifndef _ASM_GENERIC_BITOPS_FLS_H_
#define _ASM_GENERIC_BITOPS_FLS_H_
+#include <string.h>
+
/**
* fls - find last (most-significant) bit set
* @x: the word to search
@@ -10,6 +12,7 @@
* Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
*/
+#define fls __linux_fls
static __always_inline int fls(unsigned int x)
{
int r = 32;
--- a/tools/lib/string.c
+++ b/tools/lib/string.c
@@ -96,6 +96,7 @@ int strtobool(const char *s, bool *res)
* If libc has strlcpy() then that version will override this
* implementation:
*/
+#ifndef __APPLE__
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wignored-attributes"
@@ -114,6 +115,7 @@ size_t __weak strlcpy(char *dest, const
#ifdef __clang__
#pragma clang diagnostic pop
#endif
+#endif
/**
* skip_spaces - Removes leading whitespace from @str.
--- a/tools/arch/x86/include/asm/insn.h
+++ b/tools/arch/x86/include/asm/insn.h
@@ -7,7 +7,7 @@
* Copyright (C) IBM Corporation, 2009
*/
-#include <asm/byteorder.h>
+#include <linux/kernel.h>
/* insn_attr_t is defined in inat.h */
#include "inat.h" /* __ignore_sync_check__ */
--- a/tools/arch/x86/include/asm/orc_types.h
+++ b/tools/arch/x86/include/asm/orc_types.h
@@ -46,7 +46,6 @@
#define ORC_TYPE_REGS_PARTIAL 4
#ifndef __ASSEMBLY__
-#include <asm/byteorder.h>
/*
* This struct is more or less a vastly simplified version of the DWARF Call
@@ -59,12 +58,12 @@
struct orc_entry {
s16 sp_offset;
s16 bp_offset;
-#if defined(__LITTLE_ENDIAN_BITFIELD)
+#if __BYTE_ORDER == __LITTLE_ENDIAN
unsigned sp_reg:4;
unsigned bp_reg:4;
unsigned type:3;
unsigned signal:1;
-#elif defined(__BIG_ENDIAN_BITFIELD)
+#elif __BYTE_ORDER == __BIG_ENDIAN
unsigned bp_reg:4;
unsigned sp_reg:4;
unsigned unused:4;
--- a/tools/include/linux/rbtree.h
+++ b/tools/include/linux/rbtree.h
@@ -18,7 +18,6 @@
#define __TOOLS_LINUX_PERF_RBTREE_H
#include <linux/kernel.h>
-#include <linux/stddef.h>
struct rb_node {
unsigned long __rb_parent_color;
--- a/tools/include/tools/be_byteshift.h
+++ b/tools/include/tools/be_byteshift.h
@@ -2,6 +2,10 @@
#ifndef _TOOLS_BE_BYTESHIFT_H
#define _TOOLS_BE_BYTESHIFT_H
+#ifndef __linux__
+#include "linux_types.h"
+#endif
+
#include <stdint.h>
static inline uint16_t __get_unaligned_be16(const uint8_t *p)
--- a/tools/include/tools/le_byteshift.h
+++ b/tools/include/tools/le_byteshift.h
@@ -2,6 +2,10 @@
#ifndef _TOOLS_LE_BYTESHIFT_H
#define _TOOLS_LE_BYTESHIFT_H
+#ifndef __linux__
+#include "linux_types.h"
+#endif
+
#include <stdint.h>
static inline uint16_t __get_unaligned_le16(const uint8_t *p)
--- /dev/null
+++ b/tools/include/tools/linux_types.h
@@ -0,0 +1,18 @@
+#ifndef __LINUX_TYPES_H
+#define __LINUX_TYPES_H
+
+#include <stdint.h>
+
+typedef int8_t __s8;
+typedef uint8_t __u8;
+
+typedef int16_t __s16;
+typedef uint16_t __u16;
+
+typedef int32_t __s32;
+typedef uint32_t __u32;
+
+typedef int64_t __s64;
+typedef uint64_t __u64;
+
+#endif
--- a/tools/objtool/Makefile
+++ b/tools/objtool/Makefile
@@ -39,6 +39,8 @@ OBJTOOL_LDFLAGS := $(LIBELF_LIBS) $(LIBS
elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(HOSTCC) $(OBJTOOL_CFLAGS) -x c -E - | grep elf_getshdr)
OBJTOOL_CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED)
+OBJTOOL_CFLAGS += $(HOST_EXTRACFLAGS)
+
# Always want host compilation.
HOST_OVERRIDES := CC="$(HOSTCC)" LD="$(HOSTLD)" AR="$(HOSTAR)"
--- a/tools/objtool/orc_dump.c
+++ b/tools/objtool/orc_dump.c
@@ -4,10 +4,10 @@
*/
#include <unistd.h>
-#include <asm/orc_types.h>
#include <objtool/objtool.h>
#include <objtool/warn.h>
#include <objtool/endianness.h>
+#include <asm/orc_types.h>
static const char *reg_name(unsigned int reg)
{
--- a/tools/objtool/orc_gen.c
+++ b/tools/objtool/orc_gen.c
@@ -7,11 +7,11 @@
#include <string.h>
#include <linux/objtool_types.h>
-#include <asm/orc_types.h>
#include <objtool/check.h>
#include <objtool/warn.h>
#include <objtool/endianness.h>
+#include <asm/orc_types.h>
static int init_orc_entry(struct orc_entry *orc, struct cfi_state *cfi,
struct instruction *insn)
--- a/tools/arch/x86/lib/insn.c
+++ b/tools/arch/x86/lib/insn.c
@@ -15,7 +15,11 @@
#include "../include/asm/insn.h" /* __ignore_sync_check__ */
#include "../include/asm-generic/unaligned.h" /* __ignore_sync_check__ */
+#ifdef __KERNEL__
#include <linux/errno.h>
+#else
+#include <errno.h>
+#endif
#include <linux/kconfig.h>
#include "../include/asm/emulate_prefix.h" /* __ignore_sync_check__ */
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