* modules out of tree issue
@ 2015-04-20 9:09 Hänel-Baas, Alexander
0 siblings, 0 replies; 5+ messages in thread
From: Hänel-Baas, Alexander @ 2015-04-20 9:09 UTC (permalink / raw)
To: Lucas De Marchi (lucas.de.marchi@gmail.com); +Cc: linux-modules
Hi,
no idea what is going wrong, when i include the output path in obj-m variab=
le?=20
obj-m :=3D out/alex.o <-- work=
s not under 3.18 but in older versions
out/alex-y :=3D internal/src/sm36502_uio.o=20
obj-m :=3D alex.o <--=
works
alex-y :=3D internal/src/sm36502_uio.o
I found a diff in /scripts/Makefile.build=20
$(multi-used-m): FORCE <- kerne=
l 3.18
$(multi-used-m) : %.o: $(multi-objs-m) FORCE <- kernel 3.17.8
I'm not sure but the dependencies are lost???=20
When I set $(multi-used-m): FORCE to $(multi-used-m) : %.o: $(multi-objs-=
m) FORCE in the 3.18/scripts/makefile.build, all my external modules make f=
iles are lucky.
I hope that helps to find out what is going wrong and we find a solution ho=
w I can use a outputdir in the obj-m variable.
---
Alexander=20
^ permalink raw reply [flat|nested] 5+ messages in thread
* modules out of tree issue
@ 2015-04-17 9:48 Hänel-Baas, Alexander
0 siblings, 0 replies; 5+ messages in thread
From: Hänel-Baas, Alexander @ 2015-04-17 9:48 UTC (permalink / raw)
To: Lucas De Marchi (lucas.de.marchi@gmail.com); +Cc: linux-modules
Hi Lucas
i have played with the make files and find out that the problem is the
OUTDIR setting in the TARGET.
makefile:
OUTDIR=3Dout/
SOURCES =3D internal/src/sm36502_uio.o
TARGET=3D${OUTDIR}alex <-- works not
OBJECTS :=3D $(SOURCES:.c=3D.o)
obj-m :=3D $(TARGET).o
$(TARGET)-y :=3D $(OBJECTS)
This works NOT at Kernel 3.18 but with older kernels
I miss the compile state and get:
sm@debianVM:~/temp/ARMg3k036502Uio$ make
make ARCH=3Darm CROSS_COMPILE=3D/opt/g3DevelBase/g3Toolchain/g3Bsp/sd3Xeno=
ArmImx.Bsp.V2/selected_toolchain/arm-v7a-linux-gnueabi- -C /opt/g3DevelBase=
/g3Toolchain/g3Bsp/sd3XenoArmImx.Bsp.V2/platform-sm-arm/build-target/linux-=
3.18 M=3D$PWD modules
make[1]: Entering directory `/opt/g3DevelBase/g3Toolchain/g3Bsp/sd3XenoArmI=
mx.Bsp.V2/platform-sm-arm/build-target/linux-3.18'
LD [M] /home/sm/temp/ARMg3k036502Uio/out/alex.o
/opt/g3DevelBase/g3Toolchain/g3Bsp/sd3XenoArmImx.Bsp.V2/selected_toolchain/=
arm-v7a-linux-gnueabi-ld: no input files
Without given OUTDIR in TARGET it works.
makefile:
SOURCES =3D internal/src/sm36502_uio.o
TARGET=3Dalex <--NO p=
roblem
OBJECTS :=3D $(SOURCES:.c=3D.o)
obj-m :=3D $(TARGET).o
$(TARGET)-y :=3D $(OBJECTS)
sm@debianVM:~/temp/ARMg3k036502Uio$ make
make ARCH=3Darm CROSS_COMPILE=3D/opt/g3DevelBase/g3Toolchain/g3Bsp/sd3Xeno=
ArmImx.Bsp.V2/selected_toolchain/arm-v7a-linux-gnueabi- -C /opt/g3DevelBase=
/g3Toolchain/g3Bsp/sd3XenoArmImx.Bsp.V2/platform-sm-arm/build-target/linux-=
3.18 M=3D$PWD modules
make[1]: Entering directory `/opt/g3DevelBase/g3Toolchain/g3Bsp/sd3XenoArmI=
mx.Bsp.V2/platform-sm-arm/build-target/linux-3.18'
CC [M] /home/sm/temp/ARMg3k036502Uio/internal/src/sm36502_uio.o
LD [M] /home/sm/temp/ARMg3k036502Uio/alex.o
Building modules, stage 2.
MODPOST 1 modules
CC /home/sm/temp/ARMg3k036502Uio/alex.mod.o
LD [M] /home/sm/temp/ARMg3k036502Uio/alex.ko
Then I played with kernelversion too:
3.17.8 works with my OUTDIR in TARGET
3.18 works not
I found a diff in /scripts/Makefile.build=20
@@ -386,7 +386,7 @@
$(call if_changed,link_multi-y)
$(call multi_depend, $(multi-used-y), .o, -objs -y)
+$(multi-used-m): FORCE
-$(multi-used-m) : %.o: $(multi-objs-m) FORCE
$(call if_changed,link_multi-m)
@{ echo $(@:.o=3D.ko); echo $(link_multi_deps); } > $(MODVER=
DIR)/$(@F:.o=3D.mod)
$(call multi_depend, $(multi-used-m), .o, -objs -y)
I'm not sure but the dependencies are lost???=20
When I set $(multi-used-m): FORCE to $(multi-used-m) : %.o: $(multi-objs-=
m) FORCE in the makefile.build,
all my modules make files are lucky.
I hope that helps to find out what is going wrong and we find a solution ho=
w I can
use a outputdir in the makefile.
---
Alexander=20
^ permalink raw reply [flat|nested] 5+ messages in thread
* modules out of tree issue
@ 2015-04-17 9:41 Hänel-Baas, Alexander
0 siblings, 0 replies; 5+ messages in thread
From: Hänel-Baas, Alexander @ 2015-04-17 9:41 UTC (permalink / raw)
To: Lucas De Marchi (lucas.de.marchi@gmail.com); +Cc: linux-modules
[-- Attachment #1: Type: text/plain, Size: 2819 bytes --]
Hi Lucas
i have played with the make files and find out that the problem is the
OUTDIR setting in the TARGET.
makefile:
OUTDIR=out/
SOURCES = internal/src/sm36502_uio.o
TARGET=${OUTDIR}alex <-- works not
OBJECTS := $(SOURCES:.c=.o)
obj-m := $(TARGET).o
$(TARGET)-y := $(OBJECTS)
This works NOT at Kernel 3.18 but with older kernels
I miss the compile state and get:
sm@debianVM:~/temp/ARMg3k036502Uio$ make
make ARCH=arm CROSS_COMPILE=/opt/g3DevelBase/g3Toolchain/g3Bsp/sd3XenoArmImx.Bsp.V2/selected_toolchain/arm-v7a-linux-gnueabi- -C /opt/g3DevelBase/g3Toolchain/g3Bsp/sd3XenoArmImx.Bsp.V2/platform-sm-arm/build-target/linux-3.18 M=$PWD modules
make[1]: Entering directory `/opt/g3DevelBase/g3Toolchain/g3Bsp/sd3XenoArmImx.Bsp.V2/platform-sm-arm/build-target/linux-3.18'
LD [M] /home/sm/temp/ARMg3k036502Uio/out/alex.o
/opt/g3DevelBase/g3Toolchain/g3Bsp/sd3XenoArmImx.Bsp.V2/selected_toolchain/arm-v7a-linux-gnueabi-ld: no input files
Without given OUTDIR in TARGET it works.
makefile:
SOURCES = internal/src/sm36502_uio.o
TARGET=alex <--NO problem
OBJECTS := $(SOURCES:.c=.o)
obj-m := $(TARGET).o
$(TARGET)-y := $(OBJECTS)
sm@debianVM:~/temp/ARMg3k036502Uio$ make
make ARCH=arm CROSS_COMPILE=/opt/g3DevelBase/g3Toolchain/g3Bsp/sd3XenoArmImx.Bsp.V2/selected_toolchain/arm-v7a-linux-gnueabi- -C /opt/g3DevelBase/g3Toolchain/g3Bsp/sd3XenoArmImx.Bsp.V2/platform-sm-arm/build-target/linux-3.18 M=$PWD modules
make[1]: Entering directory `/opt/g3DevelBase/g3Toolchain/g3Bsp/sd3XenoArmImx.Bsp.V2/platform-sm-arm/build-target/linux-3.18'
CC [M] /home/sm/temp/ARMg3k036502Uio/internal/src/sm36502_uio.o
LD [M] /home/sm/temp/ARMg3k036502Uio/alex.o
Building modules, stage 2.
MODPOST 1 modules
CC /home/sm/temp/ARMg3k036502Uio/alex.mod.o
LD [M] /home/sm/temp/ARMg3k036502Uio/alex.ko
Then I played with kernelversion too:
3.17.8 works with my OUTDIR in TARGET
3.18 works not
I found a diff in /scripts/Makefile.build
@@ -386,7 +386,7 @@
$(call if_changed,link_multi-y)
$(call multi_depend, $(multi-used-y), .o, -objs -y)
+$(multi-used-m): FORCE
-$(multi-used-m) : %.o: $(multi-objs-m) FORCE
$(call if_changed,link_multi-m)
@{ echo $(@:.o=.ko); echo $(link_multi_deps); } > $(MODVERDIR)/$(@F:.o=.mod)
$(call multi_depend, $(multi-used-m), .o, -objs -y)
I'm not sure but the dependencies are lost???
When I set $(multi-used-m): FORCE to $(multi-used-m) : %.o: $(multi-objs-m) FORCE in the makefile.build,
all my modules make files are lucky.
I hope that helps to find out what is going wrong and we find a solution how I can
use a outputdir in the makefile.
With best regards,
Alexander
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^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: modules out of tree issue
2015-04-16 9:41 Hänel-Baas, Alexander
@ 2015-04-16 11:25 ` Lucas De Marchi
0 siblings, 0 replies; 5+ messages in thread
From: Lucas De Marchi @ 2015-04-16 11:25 UTC (permalink / raw)
To: Hänel-Baas, Alexander; +Cc: linux-modules, lkml
Hi,
On Thu, Apr 16, 2015 at 6:41 AM, H=C3=A4nel-Baas, Alexander
<alexander.haenel-baas@sieb-meyer.de> wrote:
> Hi,
>
> I cross compile my own kernelmodule out of tree.
> Now I changed the kernel to 3.18.1 and when I compile my own module I get=
the error:
> -ld: no input files
could you share your makefile? otherwise it's difficult to say what's happe=
ning.
> The first call is the ld and not the compiler. This is the problem.
>
> With kernel 3.14 and older always compiled good.
>
> Is there any changes in the kernel makefile to build the kernel out of tr=
ee?
Not that I'm aware of. I compile out-of-tree modules just fine. See
https://git.kernel.org/cgit/utils/kernel/kmod/kmod.git/tree/testsuite/modul=
e-playground/Makefile
for an example.
> Any ideas?
>
> I'm not sure is this the right group, sorry.
You probably should CC lkml as well. Doing it now.
--=20
Lucas De Marchi
^ permalink raw reply [flat|nested] 5+ messages in thread
* modules out of tree issue
@ 2015-04-16 9:41 Hänel-Baas, Alexander
2015-04-16 11:25 ` Lucas De Marchi
0 siblings, 1 reply; 5+ messages in thread
From: Hänel-Baas, Alexander @ 2015-04-16 9:41 UTC (permalink / raw)
To: linux-modules
Hi,
I cross compile my own kernelmodule out of tree.
Now I changed the kernel to 3.18.1 and when I compile my own module I get the error:
-ld: no input files
The first call is the ld and not the compiler. This is the problem.
With kernel 3.14 and older always compiled good.
Is there any changes in the kernel makefile to build the kernel out of tree?
Any ideas?
I'm not sure is this the right group, sorry.
With best regards,
Alexander H�nel-Baas
^ permalink raw reply [flat|nested] 5+ messages in thread
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