David Dennison davidldennison

Introduction

ccache is a compiler cache. It speeds up recompilation of C/C++ code by caching previous compilations and detecting when the same compilation is being done again. This often results in a significant speedup in common compilations, especially when switching between branches. This page is about using ccache on Mac with clang and ninja build system. If you want to use Xcode, please refer to the old CCacheMac page.

In order to use ccache with clang, you need to use the current git HEAD, since the most recent version (3.1.9) doesn't contain the patch needed for using chromium style plugin.

Installation

To install ccache with [homebrew](http://mxcl.

I was chasing down another issue (slow "Save As") and thought these two issues may have been related (with QuickLook being the common broken link). Unfortunately, my "Save As" dialog is still miserably slow on the initial load; but IconServicesAgent hasn't gone above 30MB and he rarely makes an appearance in the Console!

Some of these steps may not be necessary, but here are all of the steps I took that inadverdently put IconServicesAgent back in its place. Note: all commands are a single-line, if they appear to be multiple that's just the forum formatting.

Check for any QuickLooks related .plist files. In a terminal: mdfind com.apple.quicklook. -name .plist
I only had files at the system level (specifically within /System/Library/LaunchAgents/). If you have others, modify the directions below to take that into account (re-introducing plist files from the system level back up to the user).
Make some temporary directories to store these plist files, just in case: mkdir ~/tmp-quicklook

Default

Powerlevel10k

Symbol Servers

I'm assuming you are familiar with symbol servers - you might not have one set up yourself for your own projects, but you probably use Microsoft's public symbol server for downloading symbols for system DLLs.

For your own projects it might be useful to set up a symbol server - I won't go into how you do that here since it's well documented elsewhere, but basically you just set up a folder somewhere - say X:\symbols\ or \servername\symbols or even http://servername.foo/symbols/ which has a defined tree structure:

symbols/
symbols/mymodule.pdb/
symbols/mymodule.pdb/123456789012345678901234567890122/

	# Disable menu bar transparency
	defaults write NSGlobalDomain AppleEnableMenuBarTransparency -bool false

	# Show remaining battery time; hide percentage
	defaults write com.apple.menuextra.battery ShowPercent -string "NO"
	defaults write com.apple.menuextra.battery ShowTime -string "YES"

	# Expand save panel by default
	defaults write NSGlobalDomain NSNavPanelExpandedStateForSaveMode -bool true

	#!/bin/sh

	curl $1 \| /usr/local/bin/bbedit


	# Call this script like so:
	# web2bbedit.sh http://www.barebones.com
	# This will open the Bare Bone Software homepage as HTML in BBEdit

	How to update RubyGems to a specific version

	RubyGems can update itself to the latest version:

	gem update --system
	However, you always get the newest version. This may be a problem if you’re trying to replicate a known-good environment: for example, the output format of `gem list` in RubyGems 1.3.7 breaks Chef 0.8.16 in certain circumstances. 1.3.6 is fine.

	Here’s how to update to a specific version—in this case, 1.3.6:

	gem install -v 1.3.6 rubygems-update && \

	#
	# Copyright (C) 2013-2020 Vinay Sajip. New BSD License.
	#
	import os
	import os.path
	from subprocess import Popen, PIPE
	import sys
	from threading import Thread
	from urllib.parse import urlparse
	from urllib.request import urlretrieve

	(function(win){
	/*
	Copied from https://github.com/foolip/microdatajs/blob/master/jquery.microdata.json.js
	without jQuery.
	*/
	var Schema = (function(doc){
	function getTypes(node){
	var type = node.getAttribute('itemtype');
	if(!type) return [];
	return type.split(' ');

	# FreeBSD 10.2 -- /etc/sysctl.conf version 0.47
	# https://calomel.org/freebsd_network_tuning.html
	#
	# low latency is important so we highly recommend that you disable hyper
	# threading on Intel CPUs as it has an unpredictable affect on latency, cpu
	# cache misses and load.
	#
	# These settings are specifically tuned for a "low" latency FIOS (300/300) and
	# gigabit LAN connections. If you have 10gig or 40gig you will need to increase
	# the network buffers as proposed. "man tuning" for more information.