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authorSam Ravnborg <sam@neptun.ravnborg.org>2006-10-01 11:35:24 +0200
committerSam Ravnborg <sam@neptun.ravnborg.org>2006-10-01 11:35:24 +0200
commitea837f1c050344c3f884531a195c6e339b1a54e8 (patch)
tree269e1188358452e7f4fda5052ab6363d7e5b5b87
parente94c5bde703f2f9f86d098b6bf8275c64fab10eb (diff)
kbuild: make modpost processing configurable
On request from Al Viro make modpost processing configurable. KBUILD_MODPOST_WARN can be set to make modpost warn instead of error out in case on unresolved symbols in final module link. KBUILD_MODPOST_NOFINAL can be set to avoid the final and timeconsuming .c file generation and link of .ko files. This is solely useful for speeding up when doing compile checks with for example allmodconfig Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
-rw-r--r--scripts/Makefile.modpost11
1 files changed, 8 insertions, 3 deletions
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index 4b2721ca97da..6c5469b1473b 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -32,6 +32,10 @@
# Step 4 is solely used to allow module versioning in external modules,
# where the CRC of each module is retrieved from the Module.symers file.
+# KBUILD_MODPOST_WARN can be set to avoid error out in case of undefined
+# symbols in the final module linking stage
+# KBUILD_MODPOST_NOFINAL can be set to skip the final link of modules.
+# This is solely usefull to speed up test compiles
PHONY := _modpost
_modpost: __modpost
@@ -46,7 +50,8 @@ modulesymfile := $(KBUILD_EXTMOD)/Module.symvers
__modules := $(sort $(shell grep -h '\.ko' /dev/null $(wildcard $(MODVERDIR)/*.mod)))
modules := $(patsubst %.o,%.ko, $(wildcard $(__modules:.ko=.o)))
-_modpost: $(modules)
+# Stop after building .o files if NOFINAL is set. Makes compile tests quicker
+_modpost: $(if $(KBUILD_MODPOST_NOFINAL), $(modules:.ko:.o),$(modules))
# Step 2), invoke modpost
@@ -58,7 +63,7 @@ quiet_cmd_modpost = MODPOST $(words $(filter-out vmlinux FORCE, $^)) modules
$(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile) \
$(if $(KBUILD_EXTMOD),-I $(modulesymfile)) \
$(if $(KBUILD_EXTMOD),-o $(modulesymfile)) \
- $(if $(KBUILD_EXTMOD),-w) \
+ $(if $(KBUILD_EXTMOD)$(KBUILD_MODPOST_WARN),-w) \
$(wildcard vmlinux) $(filter-out FORCE,$^)
PHONY += __modpost
@@ -92,7 +97,7 @@ targets += $(modules:.ko=.mod.o)
# Step 6), final link of the modules
quiet_cmd_ld_ko_o = LD [M] $@
- cmd_ld_ko_o = $(LD) $(LDFLAGS) $(LDFLAGS_MODULE) -o $@ \
+ cmd_ld_ko_o = $(LD) $(LDFLAGS) $(LDFLAGS_MODULE) -o $@ \
$(filter-out FORCE,$^)
$(modules): %.ko :%.o %.mod.o FORCE

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