package/bpftool: new package

PATCH Applied James Hilliard 2 participants 3 messages Jan 31, 2022 – Feb 13, 2022

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James Hilliard

author

2022-01-31 18:52 UTC #0 lore raw

PATCH v4 1/1 package/bpftool: new package

Move the target bpftool build out of linux-tools so that it is up to date.

This also fixes build issues due to differences between kernel versions. The latest version should be fully backwards compatible.

The host bpftool is needed for enabling features such as the systemd bpf-framework(to be added in a future patch).

Signed-off-by James Hilliard <[email protected]>

---
Changes v3 -> v4:
- remove linux-tools bpftool kconfig entry
Changes v2 -> v3:
- fix target install
Changes v1 -> v2:
- move target bpftool out of linux-tools into stand-alone build

---
 Config.in.legacy                             |  8 ++++
 DEVELOPERS                                   |  1 +
 package/Config.in                            |  1 +
 package/bpftool/Config.in                    | 18 ++++++++
 package/bpftool/bpftool.hash                 |  5 +++
 package/bpftool/bpftool.mk                   | 45 ++++++++++++++++++++
 package/linux-tools/Config.in                | 22 ----------
 package/linux-tools/linux-tool-bpftool.mk.in | 37 ----------------
 8 files changed, 78 insertions(+), 59 deletions(-)
 create mode 100644 package/bpftool/Config.in
 create mode 100644 package/bpftool/bpftool.hash
 create mode 100644 package/bpftool/bpftool.mk
 delete mode 100644 package/linux-tools/linux-tool-bpftool.mk.in

Config.in.legacy +8 -0

index 62717463df..dce236b3b4 100644
@@ -146,6 +146,14 @@ endif
 
 comment "Legacy options removed in 2022.02"
 
+config BR2_PACKAGE_LINUX_TOOLS_BPFTOOL
+	bool "bpftool was moved"
+	select BR2_LEGACY
+	select BR2_PACKAGE_BPFTOOL
+	help
+	  The linux-tools bpftool build has been moved out
+	  of the linux-tools package.
+
 config BR2_PACKAGE_RPI_BT_FIRMWARE
 	bool "rpi-bt-firmware package was renamed"
 	depends on BR2_arm || BR2_aarch64

DEVELOPERS +1 -0

index a1ec9a091e..51b52871ce 100644
@@ -1282,6 +1282,7 @@ F:	configs/pine64_sopine_defconfig
 
 N:	James Hilliard <[email protected]>
 F:	package/apcupsd/
+F:	package/bpftool/
 F:	package/exfatprogs/
 F:	package/gensio/
 F:	package/lua-std-debug/

package/Config.in +1 -0

index e4ca195beb..dbdcc3919b 100644
@@ -86,6 +86,7 @@ menu "Debugging, profiling and benchmark"
 	source "package/babeltrace2/Config.in"
 	source "package/blktrace/Config.in"
 	source "package/bonnie/Config.in"
+	source "package/bpftool/Config.in"
 	source "package/cache-calibrator/Config.in"
 	source "package/clinfo/Config.in"
 	source "package/coremark/Config.in"

package/bpftool/Config.in new file +18 -0

new file mode 100644
index 0000000000..39475aa962
@@ -0,0 +1,18 @@
+config BR2_PACKAGE_BPFTOOL
+	bool "bpftool"
+	depends on !BR2_nios2 # binutils
+	depends on BR2_USE_WCHAR # binutils, elfutils
+	depends on !BR2_STATIC_LIBS # elfutils
+	depends on BR2_TOOLCHAIN_HAS_THREADS # elfutils
+	depends on BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_USES_GLIBC # elfutils
+	select BR2_PACKAGE_BINUTILS
+	select BR2_PACKAGE_ELFUTILS
+	help
+	  bpftool is a tool for for inspection and simple manipulation
+	  of eBPF programs and maps.
+
+comment "bpftool needs a uClibc or glibc toolchain w/ wchar, dynamic library, threads"
+	depends on !BR2_nios2
+	depends on !BR2_USE_WCHAR || BR2_STATIC_LIBS \
+		|| !BR2_TOOLCHAIN_HAS_THREADS \
+		|| !(BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_USES_GLIBC)

package/bpftool/bpftool.hash new file +5 -0

new file mode 100644
index 0000000000..c7d4ae250e
@@ -0,0 +1,5 @@
+# Locally calculated
+sha256  c868cb85bf44195ec6cd20649c3db4f7aff64a38d950a1c2911d981fb2d7042c  bpftool-a7f0e7f057283ae8af3de4578bcb8b7ee80b7144-br1.tar.gz
+sha256  7c588754d5e81e92e2a12e47cf78949d485c9c22b4850f12d21b3835c85947d1  LICENSE
+sha256  6313108c23efffa36948f8b2cff1560a5935373b527b0e1a837cc77e6ed1bacd  LICENSE.BSD-2-Clause
+sha256  8177f97513213526df2cf6184d8ff986c675afb514d4e68a404010521b880643  LICENSE.GPL-2.0

package/bpftool/bpftool.mk new file +45 -0

45 lines not on this page · raw message

package/linux-tools/Config.in +0 ~~-22~~

index 28641dccdd..f459b41762 100644
@@ -5,28 +5,6 @@ menu "Linux Kernel Tools"
 config BR2_PACKAGE_LINUX_TOOLS
 	bool
 
-config BR2_PACKAGE_LINUX_TOOLS_BPFTOOL
-	bool "bpftool"
-	depends on !BR2_nios2 # binutils
-	depends on BR2_USE_WCHAR # binutils, elfutils
-	depends on !BR2_STATIC_LIBS # elfutils
-	depends on BR2_TOOLCHAIN_HAS_THREADS # elfutils
-	depends on BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_USES_GLIBC # elfutils
-	select BR2_PACKAGE_LINUX_TOOLS
-	select BR2_PACKAGE_BINUTILS
-	select BR2_PACKAGE_ELFUTILS
-	help
-	  bpftool is a tool for for inspection and simple manipulation
-	  of eBPF programs and maps.
-
-	  These tools are available only from kernel version 4.15.
-
-comment "bpftool needs a uClibc or glibc toolchain w/ wchar, dynamic library, threads"
-	depends on !BR2_nios2
-	depends on !BR2_USE_WCHAR || BR2_STATIC_LIBS \
-		|| !BR2_TOOLCHAIN_HAS_THREADS \
-		|| !(BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_USES_GLIBC)
-
 config BR2_PACKAGE_LINUX_TOOLS_CPUPOWER
 	bool "cpupower"
 	select BR2_PACKAGE_LINUX_TOOLS

package/linux-tools/linux-tool-bpftool.mk.in deleted +0 ~~-37~~

deleted file mode 100644
index 0c4d3693a3..0000000000
@@ -1,37 +0,0 @@
-################################################################################
-#
-# bpftool
-#
-################################################################################
-
-LINUX_TOOLS += bpftool
-
-BPFTOOL_DEPENDENCIES = binutils elfutils
-
-ifeq ($(BR2_PACKAGE_LIBCAP),y)
-BPFTOOL_DEPENDENCIES += libcap
-endif
-
-ifeq ($(BR2_PACKAGE_ZLIB),y)
-BPFTOOL_DEPENDENCIES += zlib
-endif
-
-BPFTOOL_MAKE_OPTS = $(LINUX_MAKE_FLAGS)
-
-define BPFTOOL_BUILD_CMDS
-	$(Q)if ! grep install $(LINUX_DIR)/tools/bpf/bpftool/Makefile >/dev/null 2>&1 ; then \
-		echo "Your kernel version is too old and does not have install section in the bpf tools." ; \
-		echo "At least kernel 4.15 must be used." ; \
-		exit 1 ; \
-	fi
-
-	$(TARGET_MAKE_ENV) $(MAKE1) -C $(LINUX_DIR)/tools/bpf/bpftool \
-		$(BPFTOOL_MAKE_OPTS)
-endef
-
-define BPFTOOL_INSTALL_TARGET_CMDS
-	$(TARGET_MAKE_ENV) $(MAKE1) -C $(LINUX_DIR)/tools/bpf/bpftool \
-		$(BPFTOOL_MAKE_OPTS) \
-		DESTDIR=$(TARGET_DIR) \
-		install
-endef

Signature · 6 lines

2.25.1

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Arnout Vandecappelle

Applied

2022-02-12 13:25 UTC #1 lore raw

Quoted 5 lines · James Hilliard

Move the target bpftool build out of linux-tools so that it is up to date.
This also fixes build issues due to differences between kernel versions. The latest version should be fully backwards compatible.

I don't understand this: linux-tools is part of the kernel build itself, so
there shouldn't be any differences between kernel versions... Anyway, you probably experienced it so I kept the comment.

Quoted 3 lines

The host bpftool is needed for enabling features such as the systemd bpf-framework(to be added in a future patch).

Normally we only accept host packages if there's a (target) package that
actually depends on it. Knowing you however we're not going to have to wait long for this systemd bpf framework, so I kept the host package.

Quoted 4 lines

Signed-off-by James Hilliard <[email protected]>
---
Changes v3 -> v4:
- remove linux-tools bpftool kconfig entry

Ideally this should have been done in a separate patch, but OK.

Quoted 19 lines

Changes v2 -> v3:
- fix target install
Changes v1 -> v2:
- move target bpftool out of linux-tools into stand-alone build
---
  Config.in.legacy                             |  8 ++++
  DEVELOPERS                                   |  1 +
  package/Config.in                            |  1 +
  package/bpftool/Config.in                    | 18 ++++++++
  package/bpftool/bpftool.hash                 |  5 +++
  package/bpftool/bpftool.mk                   | 45 ++++++++++++++++++++
  package/linux-tools/Config.in                | 22 ----------
  package/linux-tools/linux-tool-bpftool.mk.in | 37 ----------------
  8 files changed, 78 insertions(+), 59 deletions(-)
create mode 100644 package/bpftool/Config.in
create mode 100644 package/bpftool/bpftool.hash create mode 100644 package/bpftool/bpftool.mk
delete mode 100644 package/linux-tools/linux-tool-bpftool.mk.in

[snip]

Quoted 6 lines

package/bpftool/bpftool.mk new file +0 -0
new file mode 100644
index 0000000000..4276f91958

package/bpftool/bpftool.mk line 10

Quoted 10 lines

package/bpftool/bpftool.mk new file +10 -0

@@ -0,0 +1,45 @@
+################################################################################
+#
+# bpftool
+#
+################################################################################
+
+BPFTOOL_VERSION = a7f0e7f057283ae8af3de4578bcb8b7ee80b7144
+BPFTOOL_SITE = https://github.com/libbpf/bpftool
+BPFTOOL_SITE_METHOD = git
+BPFTOOL_GIT_SUBMODULES = YES

This is purely for the libbpf submodule. We normally prefer to unbundle such
dependencies, since we have libbpf as a package. I've kept it for now, but if you could unbundle it, that would be great.

I've added a line to the commit message to explain why the git download method
is used.

Applied to master, thanks.

Regards,
Arnout

Quoted 101 lines

package/bpftool/bpftool.mk new file +35 -0

+BPFTOOL_LICENSE = GPL-2.0, BSD-2-Clause
+BPFTOOL_LICENSE_FILES = LICENSE LICENSE.BSD-2-Clause LICENSE.GPL-2.0
+BPFTOOL_DEPENDENCIES = binutils elfutils
+HOST_BPFTOOL_DEPENDENCIES = host-elfutils host-pkgconf host-zlib
+
+ifeq ($(BR2_PACKAGE_LIBCAP),y)
+BPFTOOL_DEPENDENCIES += libcap
+endif
+
+ifeq ($(BR2_PACKAGE_ZLIB),y)
+BPFTOOL_DEPENDENCIES += zlib
+endif
+
+define BPFTOOL_BUILD_CMDS
+	$(TARGET_MAKE_ENV) $(TARGET_CONFIGURE_OPTS) $(MAKE) \
+		-C $(@D)/src
+endef
+
+define HOST_BPFTOOL_BUILD_CMDS
+	$(HOST_MAKE_ENV) $(HOST_CONFIGURE_OPTS) $(MAKE) \
+		-C $(@D)/src
+endef
+
+define BPFTOOL_INSTALL_TARGET_CMDS
+	$(TARGET_MAKE_ENV) $(TARGET_CONFIGURE_OPTS) $(MAKE) \
+		-C $(@D)/src install DESTDIR="$(TARGET_DIR)" prefix=/usr
+endef
+
+define HOST_BPFTOOL_INSTALL_CMDS
+	$(HOST_MAKE_ENV) $(HOST_CONFIGURE_OPTS) $(MAKE) \
+		-C $(@D)/src install DESTDIR="$(HOST_DIR)" prefix=/usr
+endef
+
+$(eval $(generic-package))
+$(eval $(host-generic-package))

package/linux-tools/Config.in +0 ~~-22~~

index 28641dccdd..f459b41762 100644
@@ -5,28 +5,6 @@ menu "Linux Kernel Tools"
  config BR2_PACKAGE_LINUX_TOOLS
  	bool
 
-config BR2_PACKAGE_LINUX_TOOLS_BPFTOOL
-	bool "bpftool"
-	depends on !BR2_nios2 # binutils
-	depends on BR2_USE_WCHAR # binutils, elfutils
-	depends on !BR2_STATIC_LIBS # elfutils
-	depends on BR2_TOOLCHAIN_HAS_THREADS # elfutils
-	depends on BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_USES_GLIBC # elfutils
-	select BR2_PACKAGE_LINUX_TOOLS
-	select BR2_PACKAGE_BINUTILS
-	select BR2_PACKAGE_ELFUTILS
-	help
-	  bpftool is a tool for for inspection and simple manipulation
-	  of eBPF programs and maps.
-
-	  These tools are available only from kernel version 4.15.
-
-comment "bpftool needs a uClibc or glibc toolchain w/ wchar, dynamic library, threads"
-	depends on !BR2_nios2
-	depends on !BR2_USE_WCHAR || BR2_STATIC_LIBS \
-		|| !BR2_TOOLCHAIN_HAS_THREADS \
-		|| !(BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_USES_GLIBC)
-
  config BR2_PACKAGE_LINUX_TOOLS_CPUPOWER
  	bool "cpupower"
  	select BR2_PACKAGE_LINUX_TOOLS

package/linux-tools/linux-tool-bpftool.mk.in deleted +0 ~~-27~~

deleted file mode 100644
index 0c4d3693a3..0000000000
@@ -1,37 +0,0 @@
-################################################################################
-#
-# bpftool
-#
-################################################################################
-
-LINUX_TOOLS += bpftool
-
-BPFTOOL_DEPENDENCIES = binutils elfutils
-
-ifeq ($(BR2_PACKAGE_LIBCAP),y)
-BPFTOOL_DEPENDENCIES += libcap
-endif
-
-ifeq ($(BR2_PACKAGE_ZLIB),y)
-BPFTOOL_DEPENDENCIES += zlib
-endif
-
-BPFTOOL_MAKE_OPTS = $(LINUX_MAKE_FLAGS)
-
-define BPFTOOL_BUILD_CMDS
-	$(Q)if ! grep install $(LINUX_DIR)/tools/bpf/bpftool/Makefile >/dev/null 2>&1 ; then \
-		echo "Your kernel version is too old and does not have install section in the bpf tools." ; \
-		echo "At least kernel 4.15 must be used." ; \
-		exit 1 ; \
-	fi
-

package/linux-tools/linux-tool-bpftool.mk.in line 37

Quoted 10 lines

package/linux-tools/linux-tool-bpftool.mk.in deleted +0 ~~-10~~

-	$(TARGET_MAKE_ENV) $(MAKE1) -C $(LINUX_DIR)/tools/bpf/bpftool \
-		$(BPFTOOL_MAKE_OPTS)
-endef
-
-define BPFTOOL_INSTALL_TARGET_CMDS
-	$(TARGET_MAKE_ENV) $(MAKE1) -C $(LINUX_DIR)/tools/bpf/bpftool \
-		$(BPFTOOL_MAKE_OPTS) \
-		DESTDIR=$(TARGET_DIR) \
-		install
-endef

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James Hilliard

author

2022-02-13 01:21 UTC #2 lore raw

Quoted 7 lines · Arnout Vandecappelle

Quoted 3 lines · James Hilliard
Move the target bpftool build out of linux-tools so that it is up to date.

Quoted 6 lines

Quoted 2 lines
This also fixes build issues due to differences between kernel versions. The latest version should be fully backwards compatible.
I don't understand this: linux-tools is part of the kernel build itself, so
there shouldn't be any differences between kernel versions... Anyway, you probably experienced it so I kept the comment.

I mean that older kernels provide outdated versions of bpftool which may cause issues especially for host-bpftool as stuff like systemd bpf-framework has minimum version requirements there for build side.

Quoted 8 lines

Quoted 4 lines
The host bpftool is needed for enabling features such as the systemd bpf-framework(to be added in a future patch).
Normally we only accept host packages if there's a (target) package that
actually depends on it. Knowing you however we're not going to have to wait long for this systemd bpf framework, so I kept the host package.

Yeah, I think I'll have that working once we bump clang/llvm, min version is 10.0.0 and
we're still on 9.0.1:
https://patchwork.ozlabs.org/project/buildroot/list/?series=233431&submitter=&state=*&q=&archive=both&delegate=

Quoted 42 lines

Quoted 6 lines
Signed-off-by James Hilliard <[email protected]>
---
Changes v3 -> v4:
- remove linux-tools bpftool kconfig entry
Ideally this should have been done in a separate patch, but OK.
Quoted 19 lines
Changes v2 -> v3:
- fix target install
Changes v1 -> v2:
- move target bpftool out of linux-tools into stand-alone build
---
  Config.in.legacy                             |  8 ++++
  DEVELOPERS                                   |  1 +
  package/Config.in                            |  1 +
  package/bpftool/Config.in                    | 18 ++++++++
  package/bpftool/bpftool.hash                 |  5 +++
  package/bpftool/bpftool.mk                   | 45 ++++++++++++++++++++
  package/linux-tools/Config.in                | 22 ----------
  package/linux-tools/linux-tool-bpftool.mk.in | 37 ----------------
  8 files changed, 78 insertions(+), 59 deletions(-)
create mode 100644 package/bpftool/Config.in
create mode 100644 package/bpftool/bpftool.hash create mode 100644 package/bpftool/bpftool.mk
delete mode 100644 package/linux-tools/linux-tool-bpftool.mk.in
[snip]
Quoted 12 lines
package/bpftool/bpftool.mk new file +6 -0
new file mode 100644
index 0000000000..4276f91958
@@ -0,0 +1,45 @@
+################################################################################
+#
+# bpftool
+#
+################################################################################
+

Quoted 8 lines

package/bpftool/bpftool.mk line 10
Quoted 4 lines
package/bpftool/bpftool.mk new file +4 -0
+BPFTOOL_VERSION = a7f0e7f057283ae8af3de4578bcb8b7ee80b7144
+BPFTOOL_SITE = https://github.com/libbpf/bpftool
+BPFTOOL_SITE_METHOD = git
+BPFTOOL_GIT_SUBMODULES = YES
This is purely for the libbpf submodule. We normally prefer to unbundle such
dependencies, since we have libbpf as a package. I've kept it for now, but if you could unbundle it, that would be great.

Yeah, unbundled doesn't seem to really be a supported configuration here yet.

Quoted 114 lines

I've added a line to the commit message to explain why the git download method
is used.

Applied to master, thanks.

Regards,
Arnout

Quoted 103 lines

package/bpftool/bpftool.mk new file +35 -0

+BPFTOOL_LICENSE = GPL-2.0, BSD-2-Clause
+BPFTOOL_LICENSE_FILES = LICENSE LICENSE.BSD-2-Clause LICENSE.GPL-2.0
+BPFTOOL_DEPENDENCIES = binutils elfutils
+HOST_BPFTOOL_DEPENDENCIES = host-elfutils host-pkgconf host-zlib
+
+ifeq ($(BR2_PACKAGE_LIBCAP),y)
+BPFTOOL_DEPENDENCIES += libcap
+endif
+
+ifeq ($(BR2_PACKAGE_ZLIB),y)
+BPFTOOL_DEPENDENCIES += zlib
+endif
+
+define BPFTOOL_BUILD_CMDS
+     $(TARGET_MAKE_ENV) $(TARGET_CONFIGURE_OPTS) $(MAKE) \
+             -C $(@D)/src
+endef
+
+define HOST_BPFTOOL_BUILD_CMDS
+     $(HOST_MAKE_ENV) $(HOST_CONFIGURE_OPTS) $(MAKE) \
+             -C $(@D)/src
+endef
+
+define BPFTOOL_INSTALL_TARGET_CMDS
+     $(TARGET_MAKE_ENV) $(TARGET_CONFIGURE_OPTS) $(MAKE) \
+             -C $(@D)/src install DESTDIR="$(TARGET_DIR)" prefix=/usr
+endef
+
+define HOST_BPFTOOL_INSTALL_CMDS
+     $(HOST_MAKE_ENV) $(HOST_CONFIGURE_OPTS) $(MAKE) \
+             -C $(@D)/src install DESTDIR="$(HOST_DIR)" prefix=/usr
+endef
+
+$(eval $(generic-package))
+$(eval $(host-generic-package))

package/linux-tools/Config.in +0 ~~-22~~

index 28641dccdd..f459b41762 100644
@@ -5,28 +5,6 @@ menu "Linux Kernel Tools"
  config BR2_PACKAGE_LINUX_TOOLS
      bool
 
-config BR2_PACKAGE_LINUX_TOOLS_BPFTOOL
-     bool "bpftool"
-     depends on !BR2_nios2 # binutils
-     depends on BR2_USE_WCHAR # binutils, elfutils
-     depends on !BR2_STATIC_LIBS # elfutils
-     depends on BR2_TOOLCHAIN_HAS_THREADS # elfutils
-     depends on BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_USES_GLIBC # elfutils
-     select BR2_PACKAGE_LINUX_TOOLS
-     select BR2_PACKAGE_BINUTILS
-     select BR2_PACKAGE_ELFUTILS
-     help
-       bpftool is a tool for for inspection and simple manipulation
-       of eBPF programs and maps.
-
-       These tools are available only from kernel version 4.15.
-
-comment "bpftool needs a uClibc or glibc toolchain w/ wchar, dynamic library, threads"
-     depends on !BR2_nios2
-     depends on !BR2_USE_WCHAR || BR2_STATIC_LIBS \
-             || !BR2_TOOLCHAIN_HAS_THREADS \
-             || !(BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_USES_GLIBC)
-
  config BR2_PACKAGE_LINUX_TOOLS_CPUPOWER
      bool "cpupower"
      select BR2_PACKAGE_LINUX_TOOLS

package/linux-tools/linux-tool-bpftool.mk.in deleted +0 ~~-29~~

deleted file mode 100644
index 0c4d3693a3..0000000000
@@ -1,37 +0,0 @@
-################################################################################
-#
-# bpftool
-#
-################################################################################
-
-LINUX_TOOLS += bpftool
-
-BPFTOOL_DEPENDENCIES = binutils elfutils
-
-ifeq ($(BR2_PACKAGE_LIBCAP),y)
-BPFTOOL_DEPENDENCIES += libcap
-endif
-
-ifeq ($(BR2_PACKAGE_ZLIB),y)
-BPFTOOL_DEPENDENCIES += zlib
-endif
-
-BPFTOOL_MAKE_OPTS = $(LINUX_MAKE_FLAGS)
-
-define BPFTOOL_BUILD_CMDS
-     $(Q)if ! grep install $(LINUX_DIR)/tools/bpf/bpftool/Makefile >/dev/null 2>&1 ; then \
-             echo "Your kernel version is too old and does not have install section in the bpf tools." ; \
-             echo "At least kernel 4.15 must be used." ; \
-             exit 1 ; \
-     fi
-
-     $(TARGET_MAKE_ENV) $(MAKE1) -C $(LINUX_DIR)/tools/bpf/bpftool \
-             $(BPFTOOL_MAKE_OPTS)

Quoted 8 lines

package/linux-tools/linux-tool-bpftool.mk.in line 37
Quoted 8 lines
package/linux-tools/linux-tool-bpftool.mk.in deleted +0 -8
-endef
-
-define BPFTOOL_INSTALL_TARGET_CMDS
-     $(TARGET_MAKE_ENV) $(MAKE1) -C $(LINUX_DIR)/tools/bpf/bpftool \
-             $(BPFTOOL_MAKE_OPTS) \
-             DESTDIR=$(TARGET_DIR) \
-             install
-endef

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