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From: Masahiro Yamada <masahiroy@kernel.org>
To: linux-kbuild@vger.kernel.org
Cc: Masahiro Yamada <masahiroy@kernel.org>
Subject: [PATCH 20/37] modpost: show warning if any of symbol dump files is missing
Date: Mon,  1 Jun 2020 14:57:14 +0900	[thread overview]
Message-ID: <20200601055731.3006266-20-masahiroy@kernel.org> (raw)
In-Reply-To: <20200601055731.3006266-1-masahiroy@kernel.org>

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.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 Makefile                 | 10 +---------
 scripts/Makefile.modpost |  5 ++++-
 2 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/Makefile b/Makefile
index 6280c7597a2d..f80c4ff93ec9 100644
--- a/Makefile
+++ b/Makefile
@@ -1649,17 +1649,9 @@ else # KBUILD_EXTMOD
 # We are always building modules
 KBUILD_MODULES := 1
 
-PHONY += $(objtree)/Module.symvers
-$(objtree)/Module.symvers:
-	@test -e $(objtree)/Module.symvers || ( \
-	echo; \
-	echo "  WARNING: Symbol version dump $(objtree)/Module.symvers"; \
-	echo "           is missing; modules will have no dependencies and modversions."; \
-	echo )
-
 build-dirs := $(KBUILD_EXTMOD)
 PHONY += modules
-modules: descend $(objtree)/Module.symvers
+modules: descend
 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
 
 PHONY += modules_install
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index 7d564a39f938..16fe19724c34 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -97,8 +97,11 @@ ifneq ($(findstring i,$(filter-out --%,$(MAKEFLAGS))),)
 MODPOST += -n
 endif
 
+# Clear VPATH to not search for *.symvers in $(srctree). Check only $(objtree).
+VPATH :=
 $(input-symdump):
-	@:
+	@echo >&2 'WARNING: Symbol version dump "$@" is missing.'
+	@echo >&2 '         Modules may not have dependencies or modversions.'
 
 # Read out modules.order to pass in modpost.
 # Otherwise, allmodconfig would fail with "Argument list too long".
-- 
2.25.1

  parent reply	other threads:[~2020-06-01  5:58 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-01  5:56 [PATCH 01/37] kbuild: refactor subdir-ym calculation Masahiro Yamada
2020-06-01  5:56 ` [PATCH 02/37] kbuild: refactor tagets caluculation for KBUILD_{BUILTIN,KBUILD_MODULES} Masahiro Yamada
2020-06-01  5:56 ` [PATCH 03/37] kbuild: merge init-y into core-y Masahiro Yamada
2020-06-01  5:56 ` [PATCH 04/37] kbuild: merge net-y and virt-y into drivers-y Masahiro Yamada
2020-06-01  5:56 ` [PATCH 05/37] kbuild: refactor KBUILD_VMLINUX_{OBJS,LIBS} calculation Masahiro Yamada
2020-06-03  4:21   ` Masahiro Yamada
2020-06-01  5:57 ` [PATCH 06/37] kbuild: update modules.order only when contained modules are updated Masahiro Yamada
2020-06-01  5:57 ` [PATCH 07/37] modpost: fix -i (--ignore-errors) MAKEFLAGS detection Masahiro Yamada
2020-06-01  5:57 ` [PATCH 08/37] modpost: move -T option close to the modpost command Masahiro Yamada
2020-06-01  5:57 ` [PATCH 09/37] modpost: pass -N option only for modules modpost Masahiro Yamada
2020-06-01  5:57 ` [PATCH 10/37] modpost: load KBUILD_EXTRA_SYMBOLS files in order Masahiro Yamada
2020-06-01  5:57 ` [PATCH 11/37] modpost: track if the symbol origin is a dump file or ELF object Masahiro Yamada
2020-06-01  5:57 ` [PATCH 12/37] modpost: allow to pass -i option multiple times to remove -e option Masahiro Yamada
2020-06-01  5:57 ` [PATCH 13/37] modpost: rename ext_sym_list to dump_list Masahiro Yamada
2020-06-01  5:57 ` [PATCH 14/37] modpost: re-add -e to set external_module flag Masahiro Yamada
2020-06-01  5:57 ` [PATCH 15/37] modpost: print symbol dump file as the build target in short log Masahiro Yamada
2020-06-01  5:57 ` [PATCH 16/37] modpost: refactor -i option calculation Masahiro Yamada
2020-06-01  5:57 ` [PATCH 17/37] modpost: generate vmlinux.symvers and reuse it for the second modpost Masahiro Yamada
2020-06-01  5:57 ` [PATCH 18/37] modpost: invoke modpost only when input files are updated Masahiro Yamada
2020-06-01  5:57 ` [PATCH 19/37] modpost: show warning if vmlinux is not found when processing modules Masahiro Yamada
2020-06-01  5:57 ` Masahiro Yamada [this message]
2020-06-01  5:57 ` [PATCH 21/37] modpost: drop RCS/CVS $Revision handling in MODULE_VERSION() Masahiro Yamada
2020-06-01  5:57 ` [PATCH 22/37] modpost: do not call get_modinfo() for vmlinux(.o) Masahiro Yamada
2020-06-01  5:57 ` [PATCH 23/37] modpost: add read_text_file() and get_line() helpers Masahiro Yamada
2020-06-01  5:57 ` [PATCH 24/37] modpost: fix potential mmap'ed file overrun in get_src_version() Masahiro Yamada
2020-06-01  5:57 ` [PATCH 25/37] modpost: avoid false-positive file open error Masahiro Yamada
2020-06-01  5:57 ` [PATCH 26/37] modpost: use read_text_file() and get_line() for reading text files Masahiro Yamada
2020-06-01  5:57 ` [PATCH 27/37] modpost: remove get_next_text() and make {grab,release_}file static Masahiro Yamada
2020-06-01  5:57 ` [PATCH 28/37] modpost: remove -s option Masahiro Yamada
2020-06-01  5:57 ` [PATCH 29/37] modpost: move -d option in scripts/Makefile.modpost Masahiro Yamada
2020-06-01  5:57 ` [PATCH 30/37] modpost: remove mod->is_dot_o struct member Masahiro Yamada
2020-06-01  5:57 ` [PATCH 31/37] modpost: remove is_vmlinux() call in check_for_{gpl_usage,unused}() Masahiro Yamada
2020-06-01  5:57 ` [PATCH 32/37] modpost: add mod->is_vmlinux struct member Masahiro Yamada
2020-06-01  5:57 ` [PATCH 33/37] modpost: remove mod->skip " Masahiro Yamada
2020-06-01  5:57 ` [PATCH 34/37] modpost: set have_vmlinux in new_module() Masahiro Yamada
2020-06-01  5:57 ` [PATCH 35/37] modpost: strip .o from modname before calling new_module() Masahiro Yamada
2020-06-01  5:57 ` [PATCH 36/37] modpost: remove is_vmlinux() helper Masahiro Yamada
2020-06-01  5:57 ` [PATCH 37/37] modpost: change elf_info->size to size_t Masahiro Yamada

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