[Buildroot] Fwd: Building helloworld package

Hello Adrian,

please try to send your e-mails as plain text instead of html (the default looks garbled like
this http://lists.busybox.net/pipermail/buildroot/2020-January/272348.html)...

Hi!! I have a ZCU102 (Xilinx) board and I'm trying to build a linux with a simple package, helloworld.

I've been following this page --> https://techfortalk.co.uk/2017/06/16/how-to-create-a-new-package-under-buildroot/

You seem to have it a little mixed up with
	https://techfortalk.co.uk/2017/06/15/how-to-addcompile-a-kernel-module-as-a-new-buildroot-package/

And the page how-to-create-a-new-package-under-buildroot contains some typos/mistakes..., but
the following should work in your case:

- My package/Config.in is:
config BR2_PACKAGE_PAQPRUEBAADRI
       bool "paqpruebaadri"
       help
               This is sample package.

package/paq_prueba_adri/Config.in:

config BR2_PACKAGE_PAQ_PRUEB_AADRI
	bool "paq-prueba-adri"
	help
	  This is sample package.

- My package/paq_prueba_adri.mk is:
paqpruebaadri_MODULE_VERSION = 1.0
paqpruebaadri_SITE = /home/adrian/Documents/codigo_holamundo
paqpruebaadri_SITE_METHOD = local
paqpruebaadri_LICENSE = GPLv2
paqpruebaadri_LICENSE_FILES = COPYING
paqpruebaadri_MODULE_MAKE_OPTS = \
        CONFIG_DUMMY1= \
        CONFIG_DUMMY2=y

define ADRI_BUILD_CMDS
$(MAKE) CC="$(TARGET_CC)" LD="$(TARGET_LD)" -C $(@D) all
endef

define ADRI_INSTALL_TARGET_CMDS
$(INSTALL) -D -m 0755 $(@D)/adritest $(TARGET_DIR)/bin
$(INSTALL) -D -m 0755 $(@D)//run_adritest.sh $(TARGET_DIR)/bin
$(TARGET_DIR)/root
endef
 
$(eval $(generic-package))

package/paq_prueba_adri/paq_prueba_adri.mk

PAQ_PRUEBA_ADRI_VERSION = 1.0
PAQ_PRUEBA_ADRI_SITE = /home/adrian/Documents/codigo_holamundo
PAQ_PRUEBA_ADRI_SITE_METHOD = local
PAQ_PRUEBA_ADRI_LICENSE = GPLv2
PAQ_PRUEBA_ADRI_LICENSE_FILES = COPYING

define PAQ_PRUEBA_ADRI_BUILD_CMDS
$(MAKE) CC="$(TARGET_CC)" LD="$(TARGET_LD)" -C $(@D) all
endef

define PAQ_PRUEBA_ADRI_INSTALL_TARGET_CMDS
$(INSTALL) -D -m 0755 $(@D)/holamundo $(TARGET_DIR)/bin
endef
 
$(eval $(generic-package))

- And, inside of the main Config.in, I've written:
menu "Target packages"

source "package/busybox/Config.in"CC := gcc

all: holamundo

holamundo: holamundo.c
	$(CC) $(CFLAGS) -o holamundo holamundo.c

source "package/skeleton/Config.in"
source "package/skeleton-custom/Config.in"
source "package/skeleton-init-common/Config.in"
source "package/skeleton-init-none/Config.in"
source "package/skeleton-init-systemd/Config.in"
source "package/skeleton-init-sysv/Config.in"

--> menu "Paq prueba ADRI"                                            <--
-->         source "package/paq_prueba_adri/Config.in"  <--
--> endmenu                                                                        <--

menu "Audio and video applications"
source "package/alsa-utils/Config.in"
source "package/atest/Config.in"
.
.
.

package/Config.in:

[...]
menu "Paq prueba ADRI"
        source "package/paq_prueba_adri/Config.in
endmenu
[...]

CC := gcc

all: holamundo

holamundo: holamundo.c
	$(CC) $(CFLAGS) -o holamundo holamundo.c

- The code and make files are:
#include <stdio.h>

int main()
{
        printf("Hola mundo");
        return 0;
}

Should be o.k. (if stored under /home/adrian/Documents/codigo_holamundo/holamundo.c)...

holamundo:
/home/adrian/Documents/ZCU-102/buildroot-2019.02.3/output/host/usr/bin/aarch64-linux-gnu-gcc holamundo.c

/home/adrian/Documents/codigo_holamundo/Makefile:

CC := gcc
CFLAGS := -Wall -g

all: holamundo

holamundo: holamundo.c
	$(CC) $(CFLAGS) -o holamundo holamundo.c

But, when I boot the board, I don't find anything about my package.
Am I following the correct steps?

Make sure BR2_PACKAGE_PAQ_PRUEB_AADRI is enabled in your buildroot .config file...

In case of failure don't hesitate to ask further questions and/or send the output
from:
	$ rm -rf build/paq_prueba_adri-1.0 && make paq_prueba_adri VERBOSE=1

Regards,
Peter

Thanks, Adri?n.