Build Linksys WRT54GS firmware from sources
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* download linksys official fw (155mb)

* tar xvfz wrt54gs.2.07.1.tgz

* export appropriate PATH variable
export PATH=/sbin:/usr/sbin:/bin:/usr/bin:/usr/X11R6/bin:/usr/local/bin:/usr/local/sbin:/opt/brcm/hndtools-mipsel-linux/bin:/opt/brcm/hndtools-mipsel-uclibc/bin:/opt/brcm/hndtools-mipsel-uclibc:/opt/brcm/hndtools-mipsel-linux

* build uClibc...
cd tools-src/uClibc
make menuconfig
make
make install
cp uClibc/libc/libc.a /opt/brcm/hndtools-mipsel-uclibc/lib/optinfo/
cp uClibc/libc/misc/internals/interp.o /opt/brcm/hndtools-mipsel-uclibc/lib/optinfo

* build GNU toolchain...
cd ../release/src/router
make menuconfig
save defaults
cd ../../../tools-src/
./buildtools.sh (building toolchain - takes 25-30mins on mdk10 sempron 2.6 -768mb RAM)
	here's the script's output:
	[root@localhost tools-src]# ./build_tools.sh
	BUILD_DIR=/home/pfrag/progs/WRT54GS/tools-src
	LINUX_DIR=/home/pfrag/progs/WRT54GS/tools-src/../release/src/linux/linux
	INSTALL_DIR=/opt/brcm/hndtools-mipsel-linux-3.0
	Building gnutools: Fri Nov 26 01:36:26 EET 2004
	Doing gnu-tools with no-libs: Fri Nov 26 01:36:26 EET 2004
	Configure of g-t-nl succeeded
	Make of g-t-nl succeeded
	Install g-t-nl succeeded
	Doing linux includes: Fri Nov 26 01:42:55 EET 2004
	./build_tools.sh: line 131: [: too many arguments
	Linux include dir copy succeeded
	Doing glibc: Fri Nov 26 01:42:56 EET 2004
	Glibc Configure succeeded
	Glibc Make succeededFri Nov 26 01:52:18 EET 2004
	Glibc Install succeededFri Nov 26 01:53:13 EET 2004
	Glibc include Install succeeded
	Glibc lib Install succeeded
	Fixing up libc.so locations
	libc.so Fixup succeeded
	libc.so Replace succeeded
	Doing full gnu-tools: Fri Nov 26 01:53:20 EET 2004
	Configure for g-t-full succeeded
	Make for g-t-full succeeded
	Install for g-t-full succeeded
	build_tools done: Fri Nov 26 02:01:57 EET 2004

* Set up the following symlinks (most possibly already exist):
	cd /opt/brmc
	ln -s hndtools-mipsel-uclibc-0.9.19 hndtools-mipsel-uclibc
	ln -s hndtools-mipsel-linux-3.0 hndtools-mipsel-linux
	and add these two dirs in your PATH var

* cd ../release/src/linux/linux; make dep

* cd ../../; make (takes about 6 mins on the machine described above)

The fw image (code.bin) is in the release/image directory