[Buildroot] Can not create driver package with local sources

[Buildroot] Can not create driver package with local sources

[Fabrice Mousset | GEOCEPT GmbH]

Hi all,

I try to create a custom package to build a linux driver which sources are stored locally, but this doesn't work, because source files are not copy to build directory.
I am using BuildRoot 2018.05.

Here is my mk file:
---
BR2_PACKAGE_SITEC_S4_LP_VERSION      = 1.0
BR2_PACKAGE_SITEC_S4_LP_SITE         = $(TOPDIR)/package/sitec-s4-lp/src
BR2_PACKAGE_SITEC_S4_LP_SITE_METHOD  = local
BR2_PACKAGE_SITEC_S4_LP_DEPENDENCIES = linux

define BR2_PACKAGE_SITEC_S4_LP_BUILD_CMDS
	#$(MAKE) -C $(@D) $(LINUX_MAKE_FLAGS) KERNELDIR=$(LINUX_DIR)
	$(MAKE) -C '$(@D)' LINUX_DIR='$(LINUX_DIR)' CC='$(TARGET_CC)' LD='$(TARGET_LD)' modules

endef

$(eval $(kernel-module))
$(eval $(generic-package))

---

When I build my BSP, I've got
>>> sitec-s4-lp  Extracting
>>> sitec-s4-lp  Patching
>>> sitec-s4-lp  Configuring
>>> sitec-s4-lp  Building
>>> sitec-s4-lp  Building kernel module(s)
PATH="/opt/crosstools/sitec-s4/bin:/opt/crosstools/sitec-s4/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games" BR_BINARIES_DIR=/home/fabrice/Projects/truckpc/buildroot-2018.05/output/images /usr/bin/make -j9 -C /home/fabrice/Projects/truckpc/buildroot-2018.05/output/build/linux-4.1.15 HOSTCC="/usr/bin/gcc -O2 -I/opt/crosstools/sitec-s4/include -L/opt/crosstools/sitec-s4/lib -Wl,-rpath,/opt/crosstools/sitec-s4/lib" ARCH=arm INSTALL_MOD_PATH=/home/fabrice/Projects/truckpc/buildroot-2018.05/output/target CROSS_COMPILE="/opt/crosstools/sitec-s4/bin/arm-geocept-linux-gnueabihf-" DEPMOD=/opt/crosstools/sitec-s4/sbin/depmod LOADADDR="0x80008000" INSTALL_MOD_STRIP=1  PWD=/home/fabrice/Projects/truckpc/buildroot-2018.05/output/build/sitec-s4-lp/. M=/home/fabrice/Projects/truckpc/buildroot-2018.05/output/build/sitec-s4-lp/. modules
./scripts/Makefile.build:44: /home/fabrice/Projects/truckpc/buildroot-2018.05/output/build/sitec-s4-lp/./Makefile: Aucun fichier ou dossier de ce type
make[3]: *** Pas de r?gle pour fabriquer la cible ? /home/fabrice/Projects/truckpc/buildroot-2018.05/output/build/sitec-s4-lp/./Makefile ?. Arr?t.
make[2]: *** [_module_/home/fabrice/Projects/truckpc/buildroot-2018.05/output/build/sitec-s4-lp/.] Erreur 2
make[1]: *** [/home/fabrice/Projects/truckpc/buildroot-2018.05/output/build/sitec-s4-lp/.stamp_built] Erreur 2
make: *** [_all] Erreur 2

When I copy the sources to the build directory, building driver works.

What I am doing wrong?

Thanks for any support

Best regards

Fabrice Mousset

[Buildroot] Can not create driver package with local sources

[Thomas Petazzoni]

Hello Fabrice,

On Fri, 17 Aug 2018 14:06:35 +0000, Fabrice Mousset | GEOCEPT GmbH
wrote:

> I try to create a custom package to build a linux driver which sources are stored locally, but this doesn't work, because source files are not copy to build directory.
> I am using BuildRoot 2018.05.
> 
> Here is my mk file:
> ---
> BR2_PACKAGE_SITEC_S4_LP_VERSION      = 1.0
> BR2_PACKAGE_SITEC_S4_LP_SITE         = $(TOPDIR)/package/sitec-s4-lp/src
> BR2_PACKAGE_SITEC_S4_LP_SITE_METHOD  = local
> BR2_PACKAGE_SITEC_S4_LP_DEPENDENCIES = linux
> 
> define BR2_PACKAGE_SITEC_S4_LP_BUILD_CMDS

All those prefixes are wrong. The variables in the .mk file should be
prefixed by SITEC_S4_LP, not BR2_PACKAGE_SITEC_S4_LP.

As your .mk file is written, none of those variables are taken into
account, so it's exactly as if your file contained just:

$(eval $(kernel-module))
$(eval $(generic-package))

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com

[Buildroot] Can not create driver package with local sources

[Fabrice Mousset | GEOCEPT GmbH]

Good morning Thomas,

thanks a lot for you reply. Changing BR2_PACKAGE_SITEC_S4_LP_XXXX to SITEC_S4_LP_XXXX resolved the build issues.

Best regards

Fabrice Mousset


> -----Urspr?ngliche Nachricht-----
> Von: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
> Gesendet: Freitag, 17. August 2018 23:38
> An: Fabrice Mousset | GEOCEPT GmbH <fabrice.mousset@geocept.com>
> Cc: 'buildroot at busybox.net' <buildroot@busybox.net>
> Betreff: Re: [Buildroot] Can not create driver package with local sources
> 
> Hello Fabrice,
> 
> On Fri, 17 Aug 2018 14:06:35 +0000, Fabrice Mousset | GEOCEPT GmbH
> wrote:
> 
> > I try to create a custom package to build a linux driver which sources are
> stored locally, but this doesn't work, because source files are not copy to build
> directory.
> > I am using BuildRoot 2018.05.
> >
> > Here is my mk file:
> > ---
> > BR2_PACKAGE_SITEC_S4_LP_VERSION      = 1.0
> > BR2_PACKAGE_SITEC_S4_LP_SITE         = $(TOPDIR)/package/sitec-s4-lp/src
> > BR2_PACKAGE_SITEC_S4_LP_SITE_METHOD  = local
> > BR2_PACKAGE_SITEC_S4_LP_DEPENDENCIES = linux
> >
> > define BR2_PACKAGE_SITEC_S4_LP_BUILD_CMDS
> 
> All those prefixes are wrong. The variables in the .mk file should be prefixed by
> SITEC_S4_LP, not BR2_PACKAGE_SITEC_S4_LP.
> 
> As your .mk file is written, none of those variables are taken into account, so
> it's exactly as if your file contained just:
> 
> $(eval $(kernel-module))
> $(eval $(generic-package))
> 
> Best regards,
> 
> Thomas
> --
> Thomas Petazzoni, CTO, Bootlin (formerly Free Electrons) Embedded Linux and
> Kernel engineering https://bootlin.com