openwrt/target/linux/generic/hack-6.6/200-tools_portability.patch

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__ */