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IDProjectCategoryView StatusDate SubmittedLast Update
0001604channel: kernel/el9kernel-mlpublic2026-09-02 10:162026-10-23 13:32
Reporterlux Assigned Totoracat  
PrioritynormalSeverityminorReproducibilityalways
Status resolvedResolutionfixed 
Platformx86_64OSAlmaLinuxOS Version9
Summary0001604: Problem recompiling kernel-ml since 7.2.1
DescriptionHallo.

This is not a bug. I'm trying to recompile kernel-ml on my Alma Linux 9 box but since 7.2.1, it fails (I was able to recompile on the same system up to 7.1.10). I use mock to recompile my packages. I just would like to know if there is some info about the Elrepo compiling environment because apparently mine has some difference, which leads to my compilation to fail.

The failing part is when it comes to compile bpftool:

+ pushd tools/bpf/bpftool
+ /usr/bin/make -s 'EXTRA_CFLAGS=-O2 -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -march=x86-64-v2 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection' 'EXTRA_LDFLAGS=-Wl,-z,relro -Wl,--as-needed -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 ' DESTDIR=/builddir/build/BUILDROOT/kernel-ml-7.2.2-1.el9.x86_64 VMLINUX_H=vmlinux.h

Auto-detecting system features:
... clang-bpf-co-re: [ on ]
... llvm: [ on ]
... libcap: [ on ]
... libbfd: [ on ]

make: Circular vmlinux.h <- vmlinux.h dependency dropped.
cc1: warning: '-Wformat-y2k' ignored without '-Wformat' [-Wformat-y2k]
cc1: warning: '-Wformat-security' ignored without '-Wformat' [-Wformat-security]
/usr/bin/ld: /builddir/build/BUILD/kernel-ml-7.2.2/linux-7.2.2-1.el9.x86_64/tools/bpf/bpftool/bootstrap/main.o: relocation R_X86_64_32 against `.rodata.str1.8' can not be used when making a PIE object; recompile with -fPIE
/usr/bin/ld: /builddir/build/BUILD/kernel-ml-7.2.2/linux-7.2.2-1.el9.x86_64/tools/bpf/bpftool/bootstrap/common.o: relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a PIE object; recompile with -fPIE
/usr/bin/ld: /builddir/build/BUILD/kernel-ml-7.2.2/linux-7.2.2-1.el9.x86_64/tools/bpf/bpftool/bootstrap/json_writer.o: relocation R_X86_64_32S against `.rodata' can not be used when making a PIE object; recompile with -fPIE
/usr/bin/ld: /builddir/build/BUILD/kernel-ml-7.2.2/linux-7.2.2-1.el9.x86_64/tools/bpf/bpftool/bootstrap/gen.o: relocation R_X86_64_32S against `.rodata' can not be used when making a PIE object; recompile with -fPIE
/usr/bin/ld: /builddir/build/BUILD/kernel-ml-7.2.2/linux-7.2.2-1.el9.x86_64/tools/bpf/bpftool/bootstrap/btf.o: relocation R_X86_64_32S against `.rodata' can not be used when making a PIE object; recompile with -fPIE
/usr/bin/ld: /builddir/build/BUILD/kernel-ml-7.2.2/linux-7.2.2-1.el9.x86_64/tools/bpf/bpftool/bootstrap/sign.o: relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a PIE object; recompile with -fPIE
/usr/bin/ld: /builddir/build/BUILD/kernel-ml-7.2.2/linux-7.2.2-1.el9.x86_64/tools/bpf/bpftool/bootstrap/libbpf/libbpf.a(libbpf-in.o): relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a PIE object; recompile with -fPIE
collect2: error: ld returned 1 exit status
make: *** [Makefile:288: /builddir/build/BUILD/kernel-ml-7.2.2/linux-7.2.2-1.el9.x86_64/tools/bpf/bpftool/bootstrap/bpftool] Error 1
error: Bad exit status from /var/tmp/rpm-tmp.8VoQXv (%build)

By opening a shell into the mock build dir and trying some flags combinations, it seems that the offending part is "-specs=/usr/lib/rpm/redhat/redhat-hardened-ld" which for me, contains:

*self_spec:
+ %{!static:%{!shared:%{!r:-pie}}}

I saw that from 7.1.10 to 7.2.1 some changes where made to the bpftool Makefile, which I think are giving my problem. I hope that someone can tell me what exact command is run in Elrepo build environment (the long make... above), what /usr/lib/rpm/redhat/redhat-hardened-ld contains, and in general any advice which could help me to solve the problem.

Thank you.
Steps To ReproduceUse Alma 9 x86_64

Install the mock build environment

create a src.rpm containing the kernel source
rpmbuild -bs --with src kernel-ml-7.2.spec

try to rebuild with
mock rebuild _path_to_src_rpm
TagsNo tags attached.

Activities

toracat

2026-09-02 13:10

administrator   ~0010951

You are not alone. We saw the same error when building the 7.2 kernels as reported in:

https://elrepo.org/bugs/view.php?id=1599

We decided to exclude bpftool .

lux

2026-09-02 16:49

reporter   ~0010952

Hallo.

The link provided, https://elrepo.org/bugs/view.php?id=1599, gives ma Access Denied. Maybe I don't have enough seniority to view it:-/

Anyway, I was able to compile the package (with bpftool) by appending HOST_EXTRACFLAGS="-fPIE" to the line:
%global bpftool_make \
  %{__make} -s EXTRA_CFLAGS="${RPM_OPT_FLAGS}" EXTRA_LDFLAGS="%{__global_ldflags}" DESTDIR=$RPM_BUILD_ROOT VMLINUX_H="${RPM_VMLINUX_H}" HOST_EXTRACFLAGS="-fPIE"

I don't know if this is the optimal solution.

toracat

2026-09-02 17:52

administrator   ~0010953

Sorry, bug1599 is an internal memo.

Thank you for sharing the solution that fixes the build issue. We will confirm it and re-build the kernel-ml package.

lux

2026-09-03 01:52

reporter   ~0010954

I see that, at least in my environment, there is a very similar problem even in el10 package, but not exactly in bpftool. The offending part is:

rm -f -f /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/libbpf/libbpf.a; ar rcs /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/libbpf/libbpf.a /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/libbpf/staticobjs/libbpf-in.o
gcc -O2 -W -Wall -Wextra -Wformat-signedness -Wno-unused-parameter -Wno-missing-field-initializers -Wbad-function-cast -Wdeclaration-after-statement -Wformat-security -Wformat-y2k -Winit-self -Wmissing-declarations -Wmissing-prototypes -Wno-system-headers -Wold-style-definition -Wpacked -Wredundant-decls -Wstrict-prototypes -Wswitch-default -Wundef -Wwrite-strings -Wformat -Wno-type-limits -Wstrict-aliasing=3 -Wshadow -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/kernel/bpf/ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/include -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/include/uapi -c -MMD main.c -o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/main.o
gcc -O2 -W -Wall -Wextra -Wformat-signedness -Wno-unused-parameter -Wno-missing-field-initializers -Wbad-function-cast -Wdeclaration-after-statement -Wformat-security -Wformat-y2k -Winit-self -Wmissing-declarations -Wmissing-prototypes -Wno-system-headers -Wold-style-definition -Wpacked -Wredundant-decls -Wstrict-prototypes -Wswitch-default -Wundef -Wwrite-strings -Wformat -Wno-type-limits -Wstrict-aliasing=3 -Wshadow -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/kernel/bpf/ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/include -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/include/uapi -c -MMD common.c -o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/common.o
gcc -O2 -W -Wall -Wextra -Wformat-signedness -Wno-unused-parameter -Wno-missing-field-initializers -Wbad-function-cast -Wdeclaration-after-statement -Wformat-security -Wformat-y2k -Winit-self -Wmissing-declarations -Wmissing-prototypes -Wno-system-headers -Wold-style-definition -Wpacked -Wredundant-decls -Wstrict-prototypes -Wswitch-default -Wundef -Wwrite-strings -Wformat -Wno-type-limits -Wstrict-aliasing=3 -Wshadow -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/kernel/bpf/ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/include -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/include/uapi -c -MMD json_writer.c -o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/json_writer.o
gcc -O2 -W -Wall -Wextra -Wformat-signedness -Wno-unused-parameter -Wno-missing-field-initializers -Wbad-function-cast -Wdeclaration-after-statement -Wformat-security -Wformat-y2k -Winit-self -Wmissing-declarations -Wmissing-prototypes -Wno-system-headers -Wold-style-definition -Wpacked -Wredundant-decls -Wstrict-prototypes -Wswitch-default -Wundef -Wwrite-strings -Wformat -Wno-type-limits -Wstrict-aliasing=3 -Wshadow -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/kernel/bpf/ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/include -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/include/uapi -c -MMD gen.c -o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/gen.o
gcc -O2 -W -Wall -Wextra -Wformat-signedness -Wno-unused-parameter -Wno-missing-field-initializers -Wbad-function-cast -Wdeclaration-after-statement -Wformat-security -Wformat-y2k -Winit-self -Wmissing-declarations -Wmissing-prototypes -Wno-system-headers -Wold-style-definition -Wpacked -Wredundant-decls -Wstrict-prototypes -Wswitch-default -Wundef -Wwrite-strings -Wformat -Wno-type-limits -Wstrict-aliasing=3 -Wshadow -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/kernel/bpf/ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/include -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/include/uapi -c -MMD btf.c -o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/btf.o
gcc -O2 -W -Wall -Wextra -Wformat-signedness -Wno-unused-parameter -Wno-missing-field-initializers -Wbad-function-cast -Wdeclaration-after-statement -Wformat-security -Wformat-y2k -Winit-self -Wmissing-declarations -Wmissing-prototypes -Wno-system-headers -Wold-style-definition -Wpacked -Wredundant-decls -Wstrict-prototypes -Wswitch-default -Wundef -Wwrite-strings -Wformat -Wno-type-limits -Wstrict-aliasing=3 -Wshadow -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/kernel/bpf/ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/include -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/include/uapi -c -MMD sign.c -o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/sign.o
gcc -O2 -W -Wall -Wextra -Wformat-signedness -Wno-unused-parameter -Wno-missing-field-initializers -Wbad-function-cast -Wdeclaration-after-statement -Wformat-security -Wformat-y2k -Winit-self -Wmissing-declarations -Wmissing-prototypes -Wno-system-headers -Wold-style-definition -Wpacked -Wredundant-decls -Wstrict-prototypes -Wswitch-default -Wundef -Wwrite-strings -Wformat -Wno-type-limits -Wstrict-aliasing=3 -Wshadow -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/kernel/bpf/ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/include -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/include/uapi -Wl,-z,relro -Wl,--as-needed -Wl,-z,pack-relative-relocs -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -specs=/usr/lib/rpm/redhat/redhat-hardened-ld-errors -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -Wl,--build-id=sha1 -specs=/usr/lib/rpm/redhat/redhat-package-notes -Wl,-E -Wl,-z,noexecstack -L/usr/lib64 /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/main.o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/common.o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/json_writer.o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/gen.o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/btf.o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/sign.o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/libbpf/libbpf.a -lelf -lcrypto -lz -lzstd -o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/bpftool
gcc -O2 -W -Wall -Wextra -Wformat-signedness -Wno-unused-parameter -Wno-missing-field-initializers -Wbad-function-cast -Wdeclaration-after-statement -Wformat-security -Wformat-y2k -Winit-self -Wmissing-declarations -Wmissing-prototypes -Wno-system-headers -Wold-style-definition -Wpacked -Wredundant-decls -Wstrict-prototypes -Wswitch-default -Wundef -Wwrite-strings -Wformat -Wno-type-limits -Wstrict-aliasing=3 -Wshadow -DPACKAGE='"bpftool"' -D__EXPORTED_HEADERS__ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/libbpf/include -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/kernel/bpf/ -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/include -I/builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/include/uapi -Wl,-z,relro -Wl,--as-needed -Wl,-z,pack-relative-relocs -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -specs=/usr/lib/rpm/redhat/redhat-hardened-ld-errors -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -Wl,--build-id=sha1 -specs=/usr/lib/rpm/redhat/redhat-package-notes -Wl,-E -Wl,-z,noexecstack -L/usr/lib64 /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/main.o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/common.o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/json_writer.o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/gen.o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/btf.o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/sign.o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/libbpf/libbpf.a -lelf -lcrypto -lz -lzstd -o /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/bpftool
/usr/bin/ld: /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/main.o: relocation R_X86_64_32 against `.rodata.str1.8' can not be used when making a PIE object; recompile with -fPIE
/usr/bin/ld: failed to set dynamic section sizes: bad value
collect2: error: ld returned 1 exit status
make[4]: *** [Makefile:288: /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/bpftool] Error 1
make[3]: *** [bpf_skel.mak:44: /builddir/build/BUILD/kernel-frank-7.2.2/linux-7.2.2-1.el10.frank.x86_64/tools/perf/util/bpf_skel/.tmp/bootstrap/bpftool] Error 2
make[2]: *** [Makefile.perf:626: bpf-skel-prepare] Error 2

The Makefile structure is different from that of bpftool. If there is any suggestion... Thx.

lux

2026-09-03 03:08

reporter   ~0010955

The 7.2.2-el10 package can be built (at least in my Alma 10 x86_64 environment) by adding HOST_EXTRACFLAGS=-fPIE to the line:
%{__make} -s EXTRA_CFLAGS="%{?build_cflags}" EXTRA_CXXFLAGS="%{?build_cxxflags}" LDFLAGS="%{?build_ldflags} -Wl,-E" -C tools/perf V=1 NO_PERF_READ_VDSO32=1 NO_PERF_READ_VDSOX32=1 WERROR=0 NO_LIBUNWIND=1 HAVE_CPLUS_DEMANGLE=1 NO_GTK2=1 NO_STRLCPY=1 NO_BIONIC=1 LIBBPF_DYNAMIC=1 LIBTRACEEVENT_DYNAMIC=1 %{?perf_build_extra_opts} prefix=%{_prefix} PYTHON=%{__python3}

toracat

2026-09-03 12:20

administrator   ~0010956

Your fix makes sense.

What I gathered so far: the RHEL build environment dictates that all user-space host binaries (such as bpftool) must be compiled with -fPIE. The bpftool submake ignores the flag. This was fixed by directly injecting this flag into the bpftool_make command.

We will re-work on both the el9 and the el10 kernel build.

toracat

2026-09-07 13:11

administrator   ~0010958

Last edited: 2026-09-09 14:56

 Addition of HOST_EXTRACFLAGS=-fPIE to the kernel spec file made it possible to build the following packages:

el10: bpftool and perf
el9: bpftool
el8: bpftool

[Note added: perf.el9 builds fine as such. perf.el8 fails to build]

toracat

2026-10-23 13:32

administrator   ~0010998

I an marking this as 'resolved' as the reported issue was fixed (thanks to @lux).

Issue History

Date Modified Username Field Change
2026-09-02 10:16 lux New Issue
2026-09-02 10:16 lux Status new => assigned
2026-09-02 10:16 lux Assigned To => pperry
2026-09-02 13:06 toracat Assigned To pperry => toracat
2026-09-02 13:06 toracat Status assigned => acknowledged
2026-09-02 13:10 toracat Note Added: 0010951
2026-09-02 16:49 lux Note Added: 0010952
2026-09-02 17:52 toracat Note Added: 0010953
2026-09-02 17:53 toracat Project channel: elrepo/el9 => channel: kernel/el9
2026-09-02 17:53 toracat Category --elrepo--OTHER-- => General
2026-09-02 17:54 toracat Category General => kernel-ml
2026-09-03 01:52 lux Note Added: 0010954
2026-09-03 03:08 lux Note Added: 0010955
2026-09-03 12:20 toracat Status acknowledged => assigned
2026-09-03 12:20 toracat Note Added: 0010956
2026-09-07 13:11 toracat Note Added: 0010958
2026-09-09 14:56 toracat Note Edited: 0010958
2026-10-23 13:32 toracat Status assigned => resolved
2026-10-23 13:32 toracat Resolution open => fixed
2026-10-23 13:32 toracat Note Added: 0010998