Initial buildroot info

buildroot/Readme.md

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+## Buildroot
+Buildroot permette la creazxione di una immagine linux minimale (~20MB) con solo lo stretto necssario. L'ambiente e' basato su busybox, sono disponibili diversi pacchetti ed e' possibile configurare il kernel.
+
+### Istruzioni
+Installare le dipendenze (debian 10)
+
+```
+apt install -t build-essential libncurses-dev bison flex libssl-dev libelf-dev
+```
+
+Clonare il repo
+```
+git clone https://github.com/buildroot/buildroot.git
+```
+
+Copiare i files presenti nella cartella `buildroot` di questo repo.
+
+```
+make pcengines_apu2_defconfig
+```
+
+Per cambiare la configurazione di buildroot (pacchetti, architettura, opzioni di compilazione):
+```
+make menuconfig
+```
+
+Per configurare direttamente il kernel linux
+```
+make linux-menuconfig
+
+```
+
+Avviare la compilazione
+```
+make
+```
+B
+B
+

buildroot/board/pcengines/apu2/isolinux.cfg

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+serial 0 115200
+default 1
+label 1
+      kernel __KERNEL_PATH__
+      initrd __INITRD_PATH__
+      append root=/dev/sr0 console=ttyS0,115200n8

buildroot/configs/pcengines_apu2_defconfig

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+BR2_x86_64=y
+BR2_x86_jaguar=y
+BR2_RELRO_FULL=y
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_19=y
+BR2_TARGET_GENERIC_HOSTNAME="cros"
+BR2_TARGET_GENERIC_ISSUE="Welcome to 1337 Systems Inc."
+BR2_TARGET_GENERIC_GETTY_PORT="ttyS0"
+BR2_SYSTEM_DHCP="eth0"
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION=y
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.19.122"
+BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
+BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/pcengines/apu2/linux.config"
+BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
+BR2_PACKAGE_PHP=y
+BR2_PACKAGE_PHP_SAPI_FPM=y
+# BR2_PACKAGE_PHP_EXT_SESSION is not set
+# BR2_PACKAGE_PHP_EXT_ZLIB is not set
+BR2_PACKAGE_LIBRESSL=y
+BR2_PACKAGE_LIBRESSL_BIN=y
+BR2_PACKAGE_LIBCURL=y
+BR2_PACKAGE_LIBCURL_CURL=y
+# BR2_PACKAGE_LIBCURL_PROXY_SUPPORT is not set
+# BR2_PACKAGE_LIBCURL_COOKIES_SUPPORT is not set
+# BR2_PACKAGE_LIBCURL_EXTRA_PROTOCOLS_FEATURES is not set
+BR2_PACKAGE_LIBCURL_TLS_NONE=y
+BR2_PACKAGE_HOSTAPD=y
+# BR2_PACKAGE_HOSTAPD_DRIVER_HOSTAP is not set
+# BR2_PACKAGE_HOSTAPD_ACS is not set
+# BR2_PACKAGE_HOSTAPD_VLAN is not set
+BR2_PACKAGE_IW=y
+BR2_PACKAGE_NGINX=y
+# BR2_PACKAGE_NGINX_HTTP_CHARSET_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_GZIP_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_SSI_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_USERID_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_ACCESS_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_AUTH_BASIC_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_AUTOINDEX_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_GEO_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_MAP_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_SPLIT_CLIENTS_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_REFERER_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_REWRITE_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_PROXY_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_UWSGI_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_SCGI_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_MEMCACHED_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_LIMIT_CONN_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_LIMIT_REQ_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_EMPTY_GIF_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_BROWSER_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_UPSTREAM_IP_HASH_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_UPSTREAM_LEAST_CONN_MODULE is not set
+# BR2_PACKAGE_NGINX_HTTP_UPSTREAM_KEEPALIVE_MODULE is not set
+BR2_PACKAGE_OPENSSH=y
+BR2_PACKAGE_WIRELESS_REGDB=y
+BR2_TARGET_ROOTFS_EXT2=y
+BR2_TARGET_ROOTFS_ISO9660=y
+BR2_TARGET_ROOTFS_ISO9660_BOOT_MENU="board/pcengines/apu2/isolinux.cfg"
+BR2_TARGET_ROOTFS_ISO9660_HYBRID=y
+# BR2_TARGET_ROOTFS_TAR is not set
+BR2_TARGET_SYSLINUX=y