Newer versions of perf in Linux 5.1+ support disassembling and
annotating eBPF programs inside the kernel. In order to do this, it uses
libbfd's support for bpf disassembly. There are two parts: libopcodes
and libbfd.
The 'perf' build system seems to expect libopcodes/libbfd to go "hand in
hand" -- always together, if one or the other is installed. If the build
system detects libbfd is available, then an import of <dis-asm.h> is
performed, but this fails since it wasn't in the buildInput. Fixing this
should be an easy, backwards-compatible change.
Fixes#60891, allowing linuxPackages_testing.perf to build again
(currently kernel version 5.1.0-rc7).
Signed-off-by: Austin Seipp <aseipp@pobox.com>
This makes the command ‘nix-env -qa -f. --arg config '{skipAliases =
true;}'’ work in Nixpkgs.
Misc...
- qtikz: use libsForQt5.callPackage
This ensures we get the right poppler.
- rewrites:
docbook5_xsl -> docbook_xsl_ns
docbook_xml_xslt -> docbook_xsl
diffpdf: fixup
Otherwise the build system computes incorrect references and looks for
perf-core in /libexec. DESTDIR for normal buildsystems is never the
right choice for nixpkgs.
In the long run it looks like we may actually need a small set of patches to
Perf if that's more maintainable, in which case we would much rather check
NIX_DEBUG_INFO_DIRS.
Signed-off-by: Austin Seipp <aseipp@pobox.com>
Certain tools, e.g. compilers, are customarily prefixed with the name of
their target platform so that multiple builds can be used at once
without clobbering each other on the PATH. I was using identifiers named
`prefix` for this purpose, but that conflicts with the standard use of
`prefix` to mean the directory where something is installed. To avoid
conflict and confusion, I renamed those to `targetPrefix`.
starting with linux 4.12 our patch no longer applied. In order to
avoid having to maintain patches for different linux kernels it is
easier to use a wrapper instead.
In 4.1, the build system changed, and it now wants to execute ld like this:
ld -r -o util/scripting-engines/libperf-in.o util/scripting-engines/trace-event-perl.o util/scripting-engines/trace-event-python.o
The actual problem seems to be that `buildInputs = [elfutils ...]`
causes 'ld' to point to elfutils in PATH instead of the usual binutils.
So remove elfutils from buildInputs and set NIX_CFLAGS_* manually. This
is a slight hack, but there is some precedent:
0761f81da7/pkgs/tools/package-management/rpm/default.nix (L13)Fixes#9095.
Says: #warning "_BSD_SOURCE and _SVID_SOURCE are deprecated, use _DEFAULT_SOURCE"
CC: #4803. There will likely appear more of these errors on Hydra in time.
