Lars Christensen larsch

Multi-language programmer, system engineer, and tinkerer.

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larsch / CMakeList_skeleton.txt

Last active August 29, 2015 13:58

	cmake_minimum_required(VERSION 2.8.11)

	# Specify the project name. Not required for subprojects, but it
	# will create a dingbat.sln for Visual Studio, which will only
	# contain the dingbat project and its dependencies.
	project(dingbat)

	# Create variables with source and header files. Nice to have if we
	# need them as arguments to custom macros.
	set(sources dingbat.cpp)

larsch / vld.cmake

Created May 1, 2014 10:35

	option(WITH_VLD "With Visual Leak Detection" OFF)
	if(WITH_VLD AND MSVC)
	message("Enabling Visual Leak Detector")
	find_library(VLD vld
	HINTS "c:/Program Files (x86)/Visual Leak Detector/lib/Win32" "c:/Program Files/Visual Leak Detector/lib/Win32")
	find_file(VLD_H vld.h
	HINTS "c:/Program Files (x86)/Visual Leak Detector/include" "c:/Program Files/Visual Leak Detector/include")
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /FIwinsock2.h")
	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} \"/FI${VLD_H}\"")
	get_filename_component(VLD_LIBRARY_DIR "${VLD}" PATH)

larsch / human_size.rb

Created September 22, 2014 04:02

Number to human file size conversion (IEC units)

	def human_size(n)
	return "0 B" if n.zero?
	sizes = %w{B KiB MiB GiB TiB PiB EiB ZiB YiB}
	x = (Math.log(n) / Math.log(1024)).floor
	n = n / (1024.0 ** x)
	n = n.round(2)
	n = n.to_i if n.round == n
	"#{n} #{sizes[x]}"
	end

larsch / create-arch-image-raspberry-pi-2.sh

Last active March 11, 2024 13:55

Shell script that creates a Arch Linux image for the Raspberry Pi 2. Downloads the latest distribution from archlinuxarm.org and creates the flash filesystems including boot partition. Partitions are aligned for typical SD cards and ext filesystem tuned accordingly.

	#!/bin/sh -ex
	losetup /dev/loop0 && exit 1 \|\| true
	image=arch-linux-$(date +%Y%m%d).img
	wget -q -N http://archlinuxarm.org/os/ArchLinuxARM-rpi-2-latest.tar.gz
	truncate -s 1G $image
	losetup /dev/loop0 $image
	parted -s /dev/loop0 mklabel msdos
	parted -s /dev/loop0 unit s mkpart primary fat32 -- 1 65535
	parted -s /dev/loop0 set 1 boot on
	parted -s /dev/loop0 unit s mkpart primary ext2 -- 65536 -1

larsch / rtprio-test.c

Created March 7, 2015 18:55

	#include <pthread.h>
	#include <stdio.h>
	#include <stdlib.h>

	void* thread_routine(void* param) {
	printf("I'm running\n");
	}

	#define CP(x) \
	{ int r = (x); \

larsch / gist:b0d72eaa63a5602e2cb5

Last active September 5, 2015 18:21

Partion the disk

parted /dev/sda
mklabel gpt
mkpart ext2 1 3
set 1 bios_grub on
mkpart ext2 3 131
mkpart ext4 131 -1

Create the file systems

larsch / RaspberryGpioArch.md

Created March 20, 2015 16:04

Update package index and upgrade all installed packaged

pacman -Syu

(S = sync, y = update, u = upgrade installed)

Install packages from AUR:

larsch / bootstrap-yaourt.sh

Last active December 2, 2016 14:02

	#!/bin/sh -ex
	sudo pacman -Sy base-devel --needed --noconfirm
	curl -O https://aur.archlinux.org/packages/pa/package-query/package-query.tar.gz
	tar xfz package-query.tar.gz -C /tmp
	pushd /tmp/package-query
	makepkg --noconfirm -sf
	sudo pacman -U --noconfirm package-query-*.pkg.tar.xz
	popd
	curl -O https://aur.archlinux.org/packages/ya/yaourt/yaourt.tar.gz
	tar xfz yaourt.tar.gz -C /tmp

larsch / gist:de0840e94098e419b10f

Created March 22, 2015 19:21

	#!/bin/sh -ex
	sudo pacman --needed --noconfirm -S base-devel

	curl -LO https://github.com/larsch/libbcm2835-aur/archive/v1.42-1.tar.gz
	tar xfz v1.42-1.tar.gz
	cd libbcm2835-aur-1.42-1
	makepkg -sf
	sudo pacman --noconfirm -U libbcm2835*.pkg.tar.xz

	curl -LO https://aur.archlinux.org/packages/ra/raspi-off-button/raspi-off-button.tar.gz

larsch / list-installed-arch.sh

Last active December 26, 2016 14:46

List packaged installed in Arch Linux (except base/base-devel)

comm -23 <(pacman -Qq|sort) <(pacman -Qqg base base-devel|xargs -n1 pactree -ul|sort -u)

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