bpftool: Update to version 7.1.0

bpftool changelog: https://github.com/libbpf/bpftool/releases
libbpf changelog: https://github.com/libbpf/libbpf/releases

This updates the bfptool to version 7.1.0. This also includes an update
of the libbpf to version 1.1.

This also adds some new feature options and removes some old ones which
were also removed form the source code. zlib for example is now
mandatory.

Add -flto also to LD flags to make it really work.

Before this change bpftool was on a git commit between version 6.7 and
6.8 and libbpf was on a commit between version 0.7 and 0.8.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

package/network/utils/bpftools/Makefile

@@ -12,9 +12,9 @@ PKG_RELEASE:=1
 
 PKG_SOURCE_URL:=https://github.com/libbpf/bpftool
 PKG_SOURCE_PROTO:=git
-PKG_SOURCE_DATE:=2022-03-08
-PKG_SOURCE_VERSION:=04c465fd1f561f67796dc68bbfe1aa7cfa956c3c
-PKG_MIRROR_HASH:=e22a954cd186f43228a96586bbdc120b11e6c87360ab88ae96ba37afb9c7cb58
+PKG_SOURCE_DATE:=7.1.0
+PKG_SOURCE_VERSION:=b01941c8f7890489f09713348a7d89567538504b
+PKG_MIRROR_HASH:=641fb337342e25ae784a3efe72c71d8c88600a326300d8d5834e26be21547015
 PKG_ABI_VERSION:=$(call abi_version_str,$(PKG_SOURCE_DATE))
 
 PKG_MAINTAINER:=Tony Ambardar <itugrok@yahoo.com>
@@ -82,7 +82,7 @@ endef
 # LTO not compatible with DSO using PIC
 ifneq ($(BUILD_VARIANT),lib)
   TARGET_CFLAGS += -ffunction-sections -fdata-sections -flto
-  TARGET_LDFLAGS += -Wl,--gc-sections
+  TARGET_LDFLAGS += -Wl,--gc-sections -flto
 endif
 
 ifeq ($(BUILD_VARIANT),full)
@@ -102,11 +102,11 @@ MAKE_FLAGS += \
 	LIBSUBDIR=lib \
 	check_feat=0 \
 	feature-clang-bpf-co-re=0 \
-	feature-reallocarray=1 \
-	feature-zlib=1 \
 	feature-libbfd=$(full) \
+	feature-llvm=0 \
 	feature-libcap=0 \
-	feature-disassembler-four-args=$(full)
+	feature-disassembler-four-args=1 \
+	feature-disassembler-init-styled=0
 
 ifeq ($(BUILD_VARIANT),lib)
   MAKE_PATH = libbpf/src

package/network/utils/bpftools/patches/001-cflags.patch

@@ -1,10 +1,10 @@
 --- a/libbpf/src/Makefile
 +++ b/libbpf/src/Makefile
-@@ -25,6 +25,7 @@ ALL_CFLAGS := $(INCLUDES)
+@@ -34,6 +34,7 @@ ALL_CFLAGS := $(INCLUDES)
  
  SHARED_CFLAGS += -fPIC -fvisibility=hidden -DSHARED
  
 +CFLAGS = $(EXTRA_CFLAGS)
  CFLAGS ?= -g -O2 -Werror -Wall -std=gnu89
- ALL_CFLAGS += $(CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
- ALL_LDFLAGS += $(LDFLAGS)
+ ALL_CFLAGS += $(CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 $(EXTRA_CFLAGS)
+ ALL_LDFLAGS += $(LDFLAGS) $(EXTRA_LDFLAGS)

package/network/utils/bpftools/patches/002-includes.patch

@@ -14,7 +14,7 @@
 @@ -73,10 +73,10 @@ CFLAGS += -W -Wall -Wextra -Wno-unused-p
  CFLAGS += $(filter-out -Wswitch-enum -Wnested-externs,$(EXTRA_WARNINGS))
  CFLAGS += -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ \
- 	-I$(if $(OUTPUT),$(OUTPUT),.) \
+ 	-I$(or $(OUTPUT),.) \
 -	-I$(LIBBPF_INCLUDE) \
  	-I$(srctree)/src/kernel/bpf/ \
  	-I$(srctree)/include \