Update to RHEL packaging and rebuild for RHEL

Resolves: RHEL-30627

RHEL packaging of libbpf differs from the Fedora one as in RHEL, we are
building libbpf directly from the kernel source tree (not GitHub repo).
Therefore, the "source" is the corresponding kernel tarball.

The reason for this difference is that BPF selftests (the only way of
testing libbpf) are not able to work with system-wide libbpf (i.e. the
one we would build from GitHub).

The changes to specfile are mostly taken from the c9s specfile, with
some minor changes.

Signed-off-by: Viktor Malik <vmalik@redhat.com>

.gitignore

@@ -15,3 +15,4 @@
 /libbpf-Fix-null-pointer-dereference-in-find_prog_by_.patch
 /v1.1.0.tar.gz
 /v1.2.0.tar.gz
+/linux-6.9.0-0.rc6.4.test.el10.tar.xz

libbpf.spec

@@ -1,17 +1,20 @@
-%global githubname   libbpf
-%global githubver    1.2.0
-%global githubfull   %{githubname}-%{githubver}
-%global libver       1.2.0
+# We build libbpf from RHEL kernel sources, that's why we use
+# directly kernel tar for RHEL kernel build.
+# We update libbpf's 'sources' file with proper hash that's
+# used as kernel tar.
 
-Name:           %{githubname}
-Version:        %{githubver}
-Release:        3%{?dist}
+# RHEL kernel version-release
+%define kver   6.9.0-0.rc6.4.test
+%define source linux-%{kver}%{?dist}
+
+Name:           libbpf
+Version:        1.4.0
+Release:        1%{?dist}
 Summary:        Libbpf library
 
 License:        LGPL-2.1-only OR BSD-2-Clause
-URL:            https://github.com/%{githubname}/%{githubname}
-Source:         https://github.com/%{githubname}/%{githubname}/archive/v%{githubver}.tar.gz
-BuildRequires:  gcc elfutils-libelf-devel elfutils-devel
+Source0:        %{source}.tar.xz
+BuildRequires:  gcc elfutils-libelf-devel elfutils-devel python3
 BuildRequires: make
 
 # This package supersedes libbpf from kernel-tools,
@@ -27,7 +30,7 @@ ABI.
 %package devel
 Summary:        Development files for %{name}
 Requires:       %{name} = 2:%{version}-%{release}
-Requires:       kernel-headers >= 5.16.0
+Requires:       kernel-headers >= %{kver}
 Requires:       zlib
 
 %description devel
@@ -44,21 +47,22 @@ developing applications that use %{name}
 
 %define _lto_cflags %{nil}
 
-%global make_flags PREFIX=%{_prefix} INCLUDEDIR=%{_includedir} DESTDIR=%{buildroot} \
-	OBJDIR=%{_builddir} CFLAGS="%{build_cflags} -fPIC" LDFLAGS="%{build_ldflags} \
-	-Wl,--no-as-needed" LIBDIR=/%{_libdir} NO_PKG_CONFIG=1
+%global libbpf_make \
+    make prefix=%{_prefix} DESTDIR=%{buildroot} OBJDIR=%{_builddir} CFLAGS="%{build_cflags} -fPIC" LDFLAGS="%{build_ldflags} -Wl,--no-as-needed" LIBDIR=/%{_libdir} NO_PKG_CONFIG=1
 
 %prep
-%autosetup -n %{githubfull} -p1
+%setup -n %{source}
 
 %build
-%make_build -C ./src %{make_flags}
+pushd tools/lib/bpf
+%{libbpf_make}
 
 %install
-%make_install -C ./src %{make_flags}
+pushd tools/lib/bpf
+%{libbpf_make} install
 
 %files
-%{_libdir}/libbpf.so.%{libver}
+%{_libdir}/libbpf.so.%{version}
 %{_libdir}/libbpf.so.1
 
 %files devel
@@ -70,6 +74,10 @@ developing applications that use %{name}
 %{_libdir}/libbpf.a
 
 %changelog
+* Tue May 07 2024 Viktor Malik <vmalik@redhat.com> - 2:1.4.0-1
+- Rebuild from latest RHEL 10.0 Beta source tree
+- Resolves: RHEL-30627
+
 * Thu Jan 25 2024 Fedora Release Engineering <releng@fedoraproject.org> - 2:1.2.0-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild
 

sources

@@ -1 +1 @@
-SHA512 (v1.2.0.tar.gz) = b5291e807a3c83cb80a47e3518a3ab5ad0b0e6157842117c0684c32e525dce0cca199c3c9028390b94a73ff968391aa023312d3b8bd7472aff1c9ee5206c424e
+SHA512 (linux-6.9.0-0.rc6.4.test.el10.tar.xz) = e688250dcb4035f3a70e4b7eff1855368dd65457543506d5f4abe340da904e0340139395e40e679fcdf61280163f9231ac89a90afb564d95f5814ac46a0711bf