ARM cross-compiler » History » Revision 3
Revision 2 (Vanč Levstik, 14.01.2011 15:02) → Revision 3/4 (Vanč Levstik, 14.01.2011 21:18)
h1. Tutorial for cross-compiling for our ARM processor. Just a short tutorial helping you build Buildroot that compiles programs for ARM. It is made for Ubuntu Linux, but should work on other distros too. h2. To build the Buildroot With @apt-get install@, you should get yourself following packages (you probably have some of them already, but just to be sure): * build-essential - this installs a complete build environment * libssl-dev * libncurses-dev * bison * flex * texinfo * zlib1g-dev * gettext * autoconf * wget * patch Then you should set your shell to bash instead of dash, you do this with: @#sudo dpkg-reconfigure dash@ And then select No h2. Getting and compiling Buildroot You can get our Buildroot here: "Buildroot-FRISMS":http://laps.fri.uni-lj.si/fri-sms/datoteke/buildroot-2009.11-fri.tar.bz2 Then you just extract the Buildroot, move into that folder and do: #make Compiling takes some time, check that there are no errors. h2. Compiling our programs After compiling Buildroot is done, you should add: @\PATH_TO_YOUR_FOLDER\buildroot-2009.11-fri\output\staging\usr\bin@ @\PATH_TO_YOUR_FOLDER\buildroot-2009.11-fri\output\staging\bin@ into your enviroment variable (PATH) Then your Makefile for compiling programs should look something like this (made for simple helloworld with name main.c): <pre> CC=arm-linux-gcc CFLAGS=-I. --sysroot=/PATH_TO_YOUR_FOLDER/buildroot-2009.11-fri/output/staging OBJ=main.o %.o: %.c $(CC) -c -o $@ $< $(CFLAGS) main: $(OBJ) $(CC) -o $@ $^ $(CFLAGS) .PHONY: clean clean: rm -f *.o *~ main </pre>