linux/Documentation/dontdiff
Masahiro Yamada 69bc8d386a kbuild: generate Module.symvers only when vmlinux exists
The external module build shows the following warning if Module.symvers
is missing in the kernel tree.

  WARNING: Symbol version dump "Module.symvers" is missing.
           Modules may not have dependencies or modversions.

I think this is an important heads-up because the resulting modules may
not work as expected. This happens when you did not build the entire
kernel tree, for example, you might have prepared the minimal setups
for external modules by 'make defconfig && make modules_preapre'.

A problem is that 'make modules' creates Module.symvers even without
vmlinux. In this case, that warning is suppressed since Module.symvers
already exists in spite of its incomplete content.

The incomplete (i.e. invalid) Module.symvers should not be created.

This commit changes the second pass of modpost to dump symbols into
modules-only.symvers. The final Module.symvers is created by
concatenating vmlinux.symvers and modules-only.symvers if both exist.

Module.symvers is supposed to collect symbols from both vmlinux and
modules. It might be a bit confusing, and I am not quite sure if it
is an official interface, but presumably it is difficult to rename it
because some tools (e.g. kmod) parse it.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2021-04-25 05:17:02 +09:00

270 lines
2.6 KiB
Text

*.a
*.aux
*.bc
*.bin
*.bz2
*.c.[012]*.*
*.cis
*.cpio
*.csp
*.dsp
*.dvi
*.elf
*.eps
*.fw
*.gcno
*.gcov
*.gen.S
*.gif
*.grep
*.grp
*.gz
*.html
*.i
*.jpeg
*.ko
*.ll
*.log
*.lst
*.lzma
*.lzo
*.mo
*.moc
*.mod
*.mod.c
*.o
*.o.*
*.order
*.orig
*.out
*.patch
*.pdf
*.plist
*.png
*.pot
*.ps
*.rej
*.s
*.sgml
*.so
*.so.dbg
*.symtypes
*.tab.c
*.tab.h
*.tex
*.ver
*.xml
*.xz
*.zst
*_MODULES
*_vga16.c
*~
\#*#
*.9
.*
.*.d
.mm
53c700_d.h
CVS
ChangeSet
GPATH
GRTAGS
GSYMS
GTAGS
Image
Module.markers
Module.symvers
PENDING
SCCS
System.map*
TAGS
aconf
af_names.h
aic7*reg.h*
aic7*reg_print.c*
aic7*seq.h*
aicasm
aicdb.h*
altivec*.c
asm-offsets.h
asm_offsets.h
autoconf.h*
av_permissions.h
bbootsect
bin2c
binkernel.spec
bootsect
bounds.h
bsetup
btfixupprep
build
bvmlinux
bzImage*
capability_names.h
capflags.c
classlist.h*
comp*.log
compile.h*
conf
config
config-*
config.mak
config.mak.autogen
conmakehash
consolemap_deftbl.c*
cpustr.h
crc32table.h*
cscope.*
defkeymap.c
devlist.h*
devicetable-offsets.h
dnotify_test
dslm
dtc
elf2ecoff
elfconfig.h*
evergreen_reg_safe.h
fixdep
flask.h
fore200e_mkfirm
fore200e_pca_fw.c*
gconf
gconf-cfg
gen-devlist
gen_crc32table
gen_init_cpio
generated
genheaders
genksyms
*_gray256.c
hpet_example
hugepage-mmap
hugepage-shm
ihex2fw
inat-tables.c
initramfs_list
int16.c
int1.c
int2.c
int32.c
int4.c
int8.c
kallsyms
keywords.c
ksym.c*
ksym.h*
*lex.c
*lex.*.c
linux
logo_*.c
logo_*_clut224.c
logo_*_mono.c
mach-types
mach-types.h
machtypes.h
map
map_hugetlb
mconf
mconf-cfg
miboot*
mk_elfconfig
mkboot
mkbugboot
mkcpustr
mkdep
mkprep
mkregtable
mktables
mktree
mkutf8data
modpost
modules-only.symvers
modules.builtin
modules.builtin.modinfo
modules.nsdeps
modules.order
modversions.h*
nconf
nconf-cfg
ncscope.*
offset.h
oui.c*
page-types
parse.c
parse.h
patches*
pca200e.bin
pca200e_ecd.bin2
perf.data
perf.data.old
perf-archive
piggyback
piggy.gzip
piggy.S
pnmtologo
ppc_defs.h*
pss_boot.h
qconf
qconf-cfg
r100_reg_safe.h
r200_reg_safe.h
r300_reg_safe.h
r420_reg_safe.h
r600_reg_safe.h
randomize_layout_hash.h
randomize_layout_seed.h
recordmcount
relocs
rlim_names.h
rn50_reg_safe.h
rs600_reg_safe.h
rv515_reg_safe.h
series
setup
setup.bin
setup.elf
sortextable
sImage
sm_tbl*
split-include
syscalltab.h
tables.c
tags
test_get_len
tftpboot.img
timeconst.h
times.h*
trix_boot.h
utsrelease.h*
vdso-syms.lds
vdso.lds
vdso32-int80-syms.lds
vdso32-syms.lds
vdso32-syscall-syms.lds
vdso32-sysenter-syms.lds
vdso32.lds
vdso32.so.dbg
vdso64.lds
vdso64.so.dbg
version.h*
vmImage
vmlinux
vmlinux-*
vmlinux.aout
vmlinux.bin.all
vmlinux.lds
vmlinux.map
vmlinux.symvers
vmlinuz
voffset.h
vsyscall.lds
vsyscall_32.lds
wanxlfw.inc
uImage
unifdef
utf8data.h
wakeup.bin
wakeup.elf
wakeup.lds
zImage*
zoffset.h