Matthias Maennich
199d8ea4c7
kbuild: mkcompile_h: consider timestamp if KBUILD_BUILD_TIMESTAMP is set
...
[ Upstream commit a979522a1a88556e42a22ce61bccc58e304cb361 ]
To avoid unnecessary recompilations, mkcompile_h does not regenerate
compile.h if just the timestamp changed.
Though, if KBUILD_BUILD_TIMESTAMP is set, an explicit timestamp for the
build was requested, in which case we should not ignore it.
If a user follows the documentation for reproducible builds [1] and
defines KBUILD_BUILD_TIMESTAMP as the git commit timestamp, a clean
build will have the correct timestamp. A subsequent cherry-pick (or
amend) changes the commit timestamp and if an incremental build is done
with a different KBUILD_BUILD_TIMESTAMP now, that new value is not taken
into consideration. But it should for reproducibility.
Hence, whenever KBUILD_BUILD_TIMESTAMP is explicitly set, do not ignore
UTS_VERSION when making a decision about whether the regenerated version
of compile.h should be moved into place.
[1] https://www.kernel.org/doc/html/latest/kbuild/reproducible-builds.html
Signed-off-by: Matthias Maennich <maennich@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-25 14:35:12 +02:00
..
atomic
basic
coccinelle
scripts: add dummy report mode to add_namespace.cocci
2020-08-11 15:33:35 +02:00
dtc
scripts/dtc: only append to HOST_EXTRACFLAGS instead of overwriting
2020-10-07 08:01:29 +02:00
gcc-plugins
gcc-common.h: Update for GCC 10
2020-05-27 17:46:24 +02:00
gdb
scripts/gdb: fix lx-symbols 'gdb.error' while loading modules
2020-07-29 10:18:35 +02:00
genksyms
kconfig
kconfig: nconf: stop endless search loops
2021-05-19 10:08:23 +02:00
ksymoops
mod
vmlinux.lds.h: Create section for protection against instrumentation
2021-02-17 10:35:16 +01:00
package
kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables
2020-09-03 11:27:10 +02:00
selinux
tracing
tweewide: Fix most Shebang lines
2021-05-22 11:38:30 +02:00
.gitignore
adjust_autoksyms.sh
asn1_compiler.c
bin2c.c
bloat-o-meter
scripts: switch explicitly to Python 3
2021-05-22 11:38:30 +02:00
bootgraph.pl
bpf_helpers_doc.py
cc-can-link.sh
check_extable.sh
checkincludes.pl
checkkconfigsymbols.py
checkpatch.pl
checkpatch: fix unescaped left brace
2020-12-30 11:51:27 +01:00
checkstack.pl
checksyscalls.sh
checkversion.pl
clang-version.sh
cleanfile
cleanpatch
coccicheck
config
tweewide: Fix most Shebang lines
2021-05-22 11:38:30 +02:00
conmakehash.c
const_structs.checkpatch
decode_stacktrace.sh
scripts/decode_stacktrace: strip basepath from all paths
2020-07-29 10:18:35 +02:00
decodecode
scripts/decodecode: fix trapping instruction formatting
2020-05-14 07:58:29 +02:00
depmod.sh
depmod: handle the case of /sbin/depmod without /sbin in PATH
2021-01-12 20:16:10 +01:00
diffconfig
scripts: switch explicitly to Python 3
2021-05-22 11:38:30 +02:00
documentation-file-ref-check
export_report.pl
modpost: move the namespace field in Module.symvers last
2020-03-25 08:25:55 +01:00
extract-cert.c
extract-ikconfig
extract-module-sig.pl
extract-sys-certs.pl
extract-vmlinux
extract_xc3028.pl
faddr2line
file-size.sh
find-unused-docs.sh
scripts/find-unused-docs: Fix massive false positives
2020-02-11 04:35:23 -08:00
gcc-goto.sh
gcc-ld
gcc-plugin.sh
gcc-version.sh
gcc-x86_32-has-stack-protector.sh
gcc-x86_64-has-stack-protector.sh
gen_compile_commands.py
gen_ksymdeps.sh
get_abi.pl
tweewide: Fix most Shebang lines
2021-05-22 11:38:30 +02:00
get_dvb_firmware
get_maintainer.pl
gfp-translate
headerdep.pl
headers_check.pl
headers_install.sh
scripts: headers_install: Exit with error on config leak
2020-06-24 17:50:33 +02:00
insert-sys-cert.c
kallsyms.c
scripts/kallsyms: fix definitely-lost memory leak
2020-01-04 19:18:23 +01:00
Kbuild.include
kbuild: sink stdout from cmd for silent build
2021-07-25 14:35:11 +02:00
Kconfig.include
kconfig: introduce m32-flag and m64-flag
2020-04-08 09:08:37 +02:00
kernel-doc
ld-version.sh
leaking_addresses.pl
Lindent
link-vmlinux.sh
bpf: Support llvm-objcopy for vmlinux BTF
2020-06-17 16:40:20 +02:00
Makefile
scripts: set proper OpenSSL include dir also for sign-file
2021-02-26 10:10:27 +01:00
Makefile.asm-generic
Makefile.build
kbuild: Fix objtool dependency for 'OBJECT_FILES_NON_STANDARD_<obj> := n'
2021-07-14 16:53:20 +02:00
Makefile.clean
Makefile.dtbinst
Makefile.extrawarn
kbuild: Disable -Wpointer-to-enum-cast
2020-03-25 08:25:54 +01:00
Makefile.gcc-plugins
Makefile.headersinst
kbuild: move headers_check rule to usr/include/Makefile
2020-03-05 16:43:47 +01:00
Makefile.host
Makefile.kasan
Makefile.kcov
Makefile.lib
kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables
2020-09-03 11:27:10 +02:00
Makefile.modbuiltin
Makefile.modfinal
Makefile.modinst
Makefile.modpost
Makefile.modsign
Makefile.package
kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables
2020-09-03 11:27:10 +02:00
Makefile.ubsan
makelst
markup_oops.pl
mkcompile_h
kbuild: mkcompile_h: consider timestamp if KBUILD_BUILD_TIMESTAMP is set
2021-07-25 14:35:12 +02:00
mkmakefile
mksysmap
mksysmap: Fix the mismatch of '.L' symbols in System.map
2020-06-24 17:50:19 +02:00
mkuboot.sh
module-common.lds
modules-check.sh
namespace.pl
namespace: fix namespace.pl script to support relative paths
2019-10-05 15:29:49 +09:00
nsdeps
scripts: add dummy report mode to add_namespace.cocci
2020-08-11 15:33:35 +02:00
objdiff
parse-maintainers.pl
parse-maintainers: Mark as executable
2020-03-25 08:25:49 +01:00
patch-kernel
pnmtologo.c
profile2linkerlist.pl
prune-kernel
recordmcount.c
ftrace: Have recordmcount use w8 to read relp->r_info in arm64_is_fake_mcount
2021-03-09 11:09:39 +01:00
recordmcount.h
recordmcount: Correct st_shndx handling
2021-06-30 08:47:49 -04:00
recordmcount.pl
riscv: Workaround mcount name prior to clang-13
2021-05-22 11:38:29 +02:00
setlocalversion
scripts/setlocalversion: make git describe output more reliable
2020-11-01 12:01:01 +01:00
show_delta
tweewide: Fix most Shebang lines
2021-05-22 11:38:30 +02:00
sign-file.c
sortextable.c
sortextable.h
spdxcheck-test.sh
spdxcheck.py
spelling.txt
sphinx-pre-install
tweewide: Fix most Shebang lines
2021-05-22 11:38:30 +02:00
split-man.pl
tweewide: Fix most Shebang lines
2021-05-22 11:38:30 +02:00
stackdelta
stackusage
subarch.include
tags.sh
tools-support-relr.sh
Makefile: fix GDB warning with CONFIG_RELR
2021-07-14 16:53:12 +02:00
unifdef.c
ver_linux
xen-hypercalls.sh
xz_wrap.sh
kbuild: add variables for compression tools
2020-09-03 11:27:10 +02:00