1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
From: Christian Breunig <christian@breunig.cc>
Date: Sat, 18 Jul 2026 18:30:00 +0000
Subject: [PATCH] arm64: fix relative syscalltbl path in Makefile.syscalls
Building the "linux-perf" Debian package (added by
0002-build-linux-perf-package.patch, via install_perf() invoking
"make -C tools/perf ... install") reproducibly fails on an arm64 build
host with:
make[9]: *** No rule to make target
'.../tools/perf/libperf/arch/arm64/include/generated/uapi/asm/unistd_64.h'.
Stop.
Root cause: tools/lib/perf/Makefile's "uapi-asm-generic:" recipe invokes
scripts/Makefile.asm-headers without "-C $(srctree)", so it inherits
whatever working directory tools/lib/perf/Makefile itself was invoked
with - which is tools/lib/perf/, not the kernel source root. This is
harmless for the generic default:
syscalltbl := $(srctree)/scripts/syscall.tbl
...which is absolute and thus resolves correctly regardless of the
working directory. arch/arm64/kernel/Makefile.syscalls, however,
overrides this with a relative path:
syscalltbl = arch/arm64/tools/syscall_%.tbl
When SRCARCH=arm64 (true both for the target kernel and, on a native
arm64 build host, for tools/perf's own build), this relative path is
looked up relative to tools/lib/perf/ instead of the kernel root, does
not exist there, and the "unistd_%.h" pattern rule that depends on it
can no longer be matched - so make reports no rule for the target at
all, rather than a missing-prerequisite error.
This only surfaces on a native arm64 build host: on x86_64 hosts (the
common case for cross-building arm64 kernels) tools/perf builds for the
x86_64 host architecture, which has no such override and always uses
the safe, absolute default path.
Fix by making arm64's override absolute too, matching the default and
every other reference in this file's callers.
---
arch/arm64/kernel/Makefile.syscalls | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/Makefile.syscalls b/arch/arm64/kernel/Makefile.syscalls
index 0542a718871a..958f2335ec1b 100644
--- a/arch/arm64/kernel/Makefile.syscalls
+++ b/arch/arm64/kernel/Makefile.syscalls
@@ -3,4 +3,4 @@
syscall_abis_32 +=
syscall_abis_64 += renameat rlimit memfd_secret
-syscalltbl = arch/arm64/tools/syscall_%.tbl
+syscalltbl = $(srctree)/arch/arm64/tools/syscall_%.tbl
--
2.39.5
|
