Hacking linux-kernel 2.6
************************

Linux kernel 2.6 has decided to work around gcc weirdness
and therefore it conflicts with ncc's nognu macros.  You'll need to
edit some files in include/linux. The following patch is to demonstrate
the required changes (if you have gcc3. for another gcc edit the
apropriate file(s)). It's best to apply the patch manually.

++++++++++++++++++++++++PATCH TO MAKE NCC WORKING+++++++++++++++
--- kernel.h.orig	2004-11-20 05:31:51.000000000 -0800
+++ kernel.h	2004-11-20 05:32:07.000000000 -0800
@@ -273,6 +273,9 @@
 
 /* Trap pasters of __FUNCTION__ at compile-time */
 #if __GNUC__ > 2 || __GNUC_MINOR__ >= 95
+#ifdef __NCC__
+#undef __FUNCTION__
+#endif
 #define __FUNCTION__ (__func__)
 #endif
 
--- compiler-gcc3.h.orig	2004-11-20 05:33:41.000000000 -0800
+++ compiler-gcc3.h	2004-11-20 05:35:07.000000000 -0800
@@ -5,8 +5,15 @@
 
 #if __GNUC_MINOR__ >= 1
 # define inline		inline		__attribute__((always_inline))
-# define __inline__	__inline__	__attribute__((always_inline))
-# define __inline	__inline	__attribute__((always_inline))
+# ifdef __NCC__
+#  undef __inline__
+#  undef __inline
+#  define __inline__	inline	__attribute__((always_inline))
+#  define __inline	inline	__attribute__((always_inline))
+#else
+#  define __inline__	__inline__	__attribute__((always_inline))
+#  define __inline	__inline	__attribute__((always_inline))
+#endif
 #endif
 
 #if __GNUC_MINOR__ > 0
++++++++++++++++++++++++++++END PATCH+++++++++++++++++++++++++++++

Then edit the root Makefile to use ncc

	HOSTCC = ncc -ncgcc -ncfabs -ncld -ncspp
	CC = $(CROSS_COMPILE)ncc -ncspp -ncfabs -ncgcc -ncld
	AR = $(CROSS_COMPILE)nccar
	LD = $(CROSS_COMPILE)nccld

and compile. If all goes well, the file vmlinux.nccout
should appear.  Then do

	nccnav vmlinux.nccout

to hack it.  There is no main in there though!


Hacking linux-kernel (2.2.something):
************************************

make menuconfig and select the parts you're interested in,
save in alternative makefile.
In the top makefile, edit CC=$(CROSS_COMPILE)ncc -ncoo -ncfabs

-----------------------------------------
[user @ host] script
Script started, file is typescript

[user @ host] make dep -f other_makefile; make clean -f other_makefile
[user @ host] make -f other_makefile -i zImage
[user @ host] exit
Script done, file is typescript
-----------------------------------------

see the typescript for errors of ncc (seach for 'ncc-error')
The output .nccout will be incomplete for files where error occured.

Currently there is a rare problem with one rarely used file. Feel free to ignore
it as most data is still there.


The output can be collected with:
	find . -name \*.nccout | xargs cat > code.map
	nccnav

* If you use the -ncfabs option, you can write a small program to remove
the sourcetree root from the paths in code.map.  However, the paths of the
header files which are absolute as set by -I options, do NOT use the current
working directory, but PWD.  The difference is that if the sourcetree is a
symbolic link of the real kernel source, the header files have the absolute
path of the symbolic link, while the source files the actual absolute path. 
Change		TOPDIR:=$(shell pwd)