diff options
Diffstat (limited to 'scripts/package-build/linux-kernel/patches/kernel')
| -rw-r--r-- | scripts/package-build/linux-kernel/patches/kernel/0005-arm64-fix-relative-syscalltbl-path-in-Makefile.sysc.patch | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/scripts/package-build/linux-kernel/patches/kernel/0005-arm64-fix-relative-syscalltbl-path-in-Makefile.sysc.patch b/scripts/package-build/linux-kernel/patches/kernel/0005-arm64-fix-relative-syscalltbl-path-in-Makefile.sysc.patch new file mode 100644 index 00000000..8bccf3b2 --- /dev/null +++ b/scripts/package-build/linux-kernel/patches/kernel/0005-arm64-fix-relative-syscalltbl-path-in-Makefile.sysc.patch @@ -0,0 +1,57 @@ +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 |