If modpost fails to load a symbol dump file, it cannot check unresolved symbols, hence module dependency will not be added. Nor CRCs can be added. Currently, external module builds check only $(objtree)/Module.symvers, but it should check files specified by KBUILD_EXTRA_SYMBOLS as well. Move the warning message from the top Makefile to scripts/Makefile.modpost and print the warning if any dump file is missing.
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| @@ -98,8 +98,11 @@ ifneq ($(findstring i,$(filter-out --%,$(MAKEFLAGS))),) · 97 unmodified lines | |||
| 98 | MODPOST += -n | 98 | MODPOST += -n |
| 99 | endif | 99 | endif |
| 100 | 100 | ||
| 101 | # Clear VPATH to not search for *.symvers in $(srctree). Check only $(objtree). | ||
| 102 | VPATH := | ||
| 101 | $(input-symdump): | 103 | $(input-symdump): |
| 102 | @: | 104 | @echo >&2 'WARNING: Symbol version dump "$@" is missing.' |
| 105 | @echo >&2 ' Modules may not have dependencies or modversions.' | ||
| 103 | 106 | ||
| 104 | # Read out modules.order to pass in modpost. | 107 | # Read out modules.order to pass in modpost. |
| 105 | # Otherwise, allmodconfig would fail with "Argument list too long". | 108 | # Otherwise, allmodconfig would fail with "Argument list too long". |