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libbpf: remove kernel configuration dependency

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This dependency introduces a cycle with pahole:

```
kernel --> pahole --> libbpf
  ^                      /
   \                    /
    `------------------<
```

pahole is a build time dependency of the kernel which is required to
generate BTF symbols. The dependency on the kernel configuration is nice
to have but makes using pahole during kernel compile time impossible.

Furthermore this dependency doesn't make sense when building libbpf
purely to ship it via a SDK.

Signed-off-by: Peter Morrow <pemorrow@linux.microsoft.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
This commit is contained in:
Peter Morrow 2021-09-06 13:07:53 +01:00 committed by Khem Raj
parent 549ff5368e
commit 4c21b66338
1 changed files with 2 additions and 14 deletions
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16
meta-oe/recipes-kernel/libbpf/libbpf_0.4.bb
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@ -8,8 +8,6 @@ LIC_FILES_CHKSUM = "file://../LICENSE.LGPL-2.1;md5=b370887980db5dd40659b50909238
DEPENDS = "zlib elfutils"
do_compile[depends] += "virtual/kernel:do_shared_workdir"
SRC_URI = "git://github.com/libbpf/libbpf.git;protocol=https"
SRCREV = "db9614b6bd69746809d506c2786f914b0f812c37"
@ -23,19 +21,9 @@ EXTRA_OEMAKE += "DESTDIR=${D} LIBDIR=${libdir} INCLUDEDIR=${includedir}"
inherit pkgconfig
do_compile() {
if grep -q "CONFIG_BPF_SYSCALL=y" ${STAGING_KERNEL_BUILDDIR}/.config
then
oe_runmake
else
bbnote "BFP syscall is not enabled"
fi
oe_runmake
}
do_install() {
if grep -q "CONFIG_BPF_SYSCALL=y" ${STAGING_KERNEL_BUILDDIR}/.config
then
oe_runmake install
else
bbnote "no files to install"
fi
oe_runmake install
}