[Letux-kernel] Question to Kbuild specialists: build multiple kenrel moduled from single directory/Makefile?

[H. Nikolaus Schaller]

Hi,

> Am 01.11.2016 um 22:40 schrieb Andrey Utkin <andrey_utkin at fastmail.com>:
> 
> Which branch should I use?
> I've tried work/hns/gpu/pvr-v4, but get this when I build letux_defconfig
> kernel inside ARM chroot (gentoo stage3, gcc 4.9.3):
> 
> # make
>  CHK     include/config/kernel.release
>  CHK     include/generated/uapi/linux/version.h
>  CHK     include/generated/utsrelease.h
>  CHK     include/generated/bounds.h
>  CHK     include/generated/timeconst.h
>  CHK     include/generated/asm-offsets.h
>  CALL    scripts/checksyscalls.sh
> <stdin>:1316:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp]
> <stdin>:1319:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp]
> <stdin>:1322:2: warning: #warning syscall pkey_free not implemented [-Wcpp]
>  CHK     include/generated/compile.h
>  CHK     kernel/config_data.h
>  DTC     drivers/gpu/drm/tilcdc/tilcdc_slave_compat.dtb
>  DTB     drivers/gpu/drm/tilcdc/tilcdc_slave_compat.dtb.S
>  AS      drivers/gpu/drm/tilcdc/tilcdc_slave_compat.dtb.o
>  LD      drivers/gpu/drm/tilcdc/built-in.o
> rm drivers/gpu/drm/tilcdc/tilcdc_slave_compat.dtb drivers/gpu/drm/tilcdc/tilcdc_slave_compat.dtb.S
>  LD      drivers/gpu/drm/built-in.o
>  CC [M]  drivers/gpu/drm/drm_global.o
>  CC [M]  drivers/gpu/drm/drm_prime.o
>  LD [M]  drivers/gpu/drm/drm.o
>  CC [M]  drivers/gpu/pvr/omap3/../../drm/drm_global.o
>  CC [M]  drivers/gpu/pvr/omap3/../../drm/drm_prime.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/bridged/bridged_pvr_bridge.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/bridged/bridged_support.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/bridged/sgx/bridged_sgx_bridge.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/buffer_manager.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/deviceclass.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/devicemem.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/handle.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/hash.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/lists.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/mem.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/mem_debug.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/metrics.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/osfunc_common.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/pdump_common.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/perproc.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/power.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/pvrsrv.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/queue.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/ra.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/refcount.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/common/resman.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/devices/sgx/mmu.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/devices/sgx/pb.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/devices/sgx/sgxinit.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/devices/sgx/sgxkick.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/devices/sgx/sgxpower.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/devices/sgx/sgxreset.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/devices/sgx/sgxtransfer.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/devices/sgx/sgxutils.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/env/linux/event.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/env/linux/mm.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/env/linux/mmap.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/env/linux/module.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/env/linux/mutex.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/env/linux/mutils.o
>  CC [M]  drivers/gpu/pvr/omap3/services4/srvkm/env/linux/osfunc.o
> drivers/gpu/pvr/omap3/services4/srvkm/env/linux/osfunc.c: In function ‘OSAcquirePhysPageAddr’:
> drivers/gpu/pvr/omap3/services4/srvkm/env/linux/osfunc.c:3611:5: error: implicit declaration of function ‘__get_user_pages’ [-Werror=implicit-function-declaration]
>     psInfo->iNumPagesMapped = __get_user_pages(current, current->mm, uStartAddr, psInfo->iNumPages, FOLL_WRITE, psInfo->ppsPages, NULL, NULL);
>     ^
> drivers/gpu/pvr/omap3/services4/srvkm/env/linux/osfunc.c: In function ‘pvr_dmac_inv_range’:
> drivers/gpu/pvr/omap3/services4/srvkm/env/linux/osfunc.c:4335:2: warning: #warning fix pvr_dmac_inv_range [-Wcpp]
> #warning fix pvr_dmac_inv_range
>  ^
> drivers/gpu/pvr/omap3/services4/srvkm/env/linux/osfunc.c: In function ‘pvr_dmac_clean_range’:
> drivers/gpu/pvr/omap3/services4/srvkm/env/linux/osfunc.c:4346:2: warning: #warning fix pvr_dmac_clean_range [-Wcpp]
> #warning fix pvr_dmac_clean_range
>  ^
> drivers/gpu/pvr/omap3/services4/srvkm/env/linux/osfunc.c: In function ‘pvr_dmac_flush_range’:
> drivers/gpu/pvr/omap3/services4/srvkm/env/linux/osfunc.c:4357:2: warning: #warning fix pvr_dmac_flush_range [-Wcpp]
> #warning fix pvr_dmac_flush_range
>  ^
> drivers/gpu/pvr/omap3/services4/srvkm/env/linux/osfunc.c: In function ‘OSFlushCPUCacheRangeKM’:
> drivers/gpu/pvr/omap3/services4/srvkm/env/linux/osfunc.c:4367:2: warning: #warning fix OSFlushCPUCacheRangeKM [-Wcpp]
> #warning fix OSFlushCPUCacheRangeKM
>  ^
> drivers/gpu/pvr/omap3/services4/srvkm/env/linux/osfunc.c: In function ‘OSCleanCPUCacheRangeKM’:
> drivers/gpu/pvr/omap3/services4/srvkm/env/linux/osfunc.c:4378:2: warning: #warning fix OSCleanCPUCacheRangeKM [-Wcpp]
> #warning fix OSCleanCPUCacheRangeKM
>  ^
> drivers/gpu/pvr/omap3/services4/srvkm/env/linux/osfunc.c: In function ‘OSInvalidateCPUCacheRangeKM’:
> drivers/gpu/pvr/omap3/services4/srvkm/env/linux/osfunc.c:4389:2: warning: #warning fix OSInvalidateCPUCacheRangeKM [-Wcpp]
> #warning fix OSInvalidateCPUCacheRangeKM
>  ^
> cc1: some warnings being treated as errors
> scripts/Makefile.build:290: recipe for target 'drivers/gpu/pvr/omap3/services4/srvkm/env/linux/osfunc.o' failed
> make[3]: *** [drivers/gpu/pvr/omap3/services4/srvkm/env/linux/osfunc.o] Error 1
> scripts/Makefile.build:475: recipe for target 'drivers/gpu/pvr/omap3' failed
> make[2]: *** [drivers/gpu/pvr/omap3] Error 2
> scripts/Makefile.build:475: recipe for target 'drivers/gpu' failed
> make[1]: *** [drivers/gpu] Error 2
> Makefile:978: recipe for target 'drivers' failed
> make: *** [drivers] Error 2

looks like some (missing) dependency. I will check tomorrow.

BR,
Nikolaus