kbuild: soften modpost checks when doing cross builds

[sfrench/cifs-2.6.git] / scripts / Makefile.modpost

diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index d5bbbcce31ef2822df654c2fb7656649b50ac866..2d20640854b7412bd46156f568a9a29443b6c0aa 100644 (file)
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -13,6 +13,7 @@
 # 2) modpost is then used to
 # 3)  create one <module>.mod.c file pr. module
 # 4)  create one Module.symvers file with CRC for all exported symbols
+# 4a) [CONFIG_MARKERS] create one Module.markers file listing defined markers
 # 5) compile all <module>.mod.c files
 # 6) final link of the module to a <module.ko> file
 
@@ -45,6 +46,10 @@ include scripts/Makefile.lib
 
 kernelsymfile := $(objtree)/Module.symvers
 modulesymfile := $(firstword $(KBUILD_EXTMOD))/Module.symvers
+kernelmarkersfile := $(objtree)/Module.markers
+modulemarkersfile := $(firstword $(KBUILD_EXTMOD))/Module.markers
+
+markersfile = $(if $(KBUILD_EXTMOD),$(modulemarkersfile),$(kernelmarkersfile))
 
 # Step 1), find all modules listed in $(MODVERDIR)/
 __modules := $(sort $(shell grep -h '\.ko' /dev/null $(wildcard $(MODVERDIR)/*.mod)))
@@ -53,33 +58,45 @@ modules   := $(patsubst %.o,%.ko, $(wildcard $(__modules:.ko=.o)))
 # Stop after building .o files if NOFINAL is set. Makes compile tests quicker
 _modpost: $(if $(KBUILD_MODPOST_NOFINAL), $(modules:.ko:.o),$(modules))
 
+ifneq ($(KBUILD_BUILDHOST),$(ARCH))
+        cross_build := 1
+endif
 
 # Step 2), invoke modpost
 #  Includes step 3,4
+modpost = scripts/mod/modpost                    \
+ $(if $(CONFIG_MODVERSIONS),-m)                  \
+ $(if $(CONFIG_MODULE_SRCVERSION_ALL),-a,)       \
+ $(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile)   \
+ $(if $(KBUILD_EXTMOD),-I $(modulesymfile))      \
+ $(if $(KBUILD_EXTMOD),-o $(modulesymfile))      \
+ $(if $(CONFIG_DEBUG_SECTION_MISMATCH),,-S)      \
+ $(if $(CONFIG_MARKERS),-K $(kernelmarkersfile)) \
+ $(if $(CONFIG_MARKERS),-M $(markersfile))      \
+ $(if $(KBUILD_EXTMOD)$(KBUILD_MODPOST_WARN),-w) \
+ $(if $(cross_build),-c)
+
 quiet_cmd_modpost = MODPOST $(words $(filter-out vmlinux FORCE, $^)) modules
-      cmd_modpost = scripts/mod/modpost            \
-        $(if $(CONFIG_MODVERSIONS),-m)             \
-       $(if $(CONFIG_MODULE_SRCVERSION_ALL),-a,)  \
-       $(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile) \
-       $(if $(KBUILD_EXTMOD),-I $(modulesymfile)) \
-       $(if $(KBUILD_EXTMOD),-o $(modulesymfile)) \
-       $(if $(KBUILD_EXTMOD)$(KBUILD_MODPOST_WARN),-w)
+      cmd_modpost = $(modpost) -s
 
 PHONY += __modpost
 __modpost: $(modules:.ko=.o) FORCE
        $(call cmd,modpost) $(wildcard vmlinux) $(filter-out FORCE,$^)
 
 quiet_cmd_kernel-mod = MODPOST $@
-      cmd_kernel-mod = $(cmd_modpost) $(KBUILD_VMLINUX_OBJS)
+      cmd_kernel-mod = $(modpost) $@
 
-PHONY += vmlinux
-vmlinux: FORCE
+vmlinux.o: FORCE
        $(call cmd,kernel-mod)
 
 # Declare generated files as targets for modpost
 $(symverfile):         __modpost ;
 $(modules:.ko=.mod.c): __modpost ;
 
+ifdef CONFIG_MARKERS
+$(markersfile):               __modpost ;
+endif
+
 
 # Step 5), compile all *.mod.c files
 
@@ -97,7 +114,7 @@ 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) -r $(LDFLAGS) $(LDFLAGS_MODULE) -o $@                \
                          $(filter-out FORCE,$^)
 
 $(modules): %.ko :%.o %.mod.o FORCE