[Buildroot] [git commit branch/next] package/linux-tools: add support for bpftool
Thomas Petazzoni
thomas.petazzoni at bootlin.com
Wed Jul 28 20:18:40 UTC 2021
commit: https://git.buildroot.net/buildroot/commit/?id=d41d79656849d0a495db461272f691c8b6a916b9
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/next
This tool is available to be compiled since kernel 4.15.
Signed-off-by: James Hilliard <james.hilliard1 at gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
---
package/linux-tools/Config.in | 22 +++++++++++++++++
package/linux-tools/linux-tool-bpftool.mk.in | 37 ++++++++++++++++++++++++++++
2 files changed, 59 insertions(+)
diff --git a/package/linux-tools/Config.in b/package/linux-tools/Config.in
index ceb58c668a..2287ef5888 100644
--- a/package/linux-tools/Config.in
+++ b/package/linux-tools/Config.in
@@ -5,6 +5,28 @@ 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
diff --git a/package/linux-tools/linux-tool-bpftool.mk.in b/package/linux-tools/linux-tool-bpftool.mk.in
new file mode 100644
index 0000000000..0c4d3693a3
--- /dev/null
+++ b/package/linux-tools/linux-tool-bpftool.mk.in
@@ -0,0 +1,37 @@
+################################################################################
+#
+# 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
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