Board.KolibriOS.org

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 gcc -c main.c
 ld -nostdlib -T kos.ld -o out.kex --image-base 0 --stack 8192 main.o libc.a 
 objcopy out.kex -O binary

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gcc -c -O2 -fno-builtin-printf -fomit-frame-pointer -I/kos/libs/libc/include main.c -o main.o
gcc -c -O2 -fno-builtin-printf -fomit-frame-pointer -I/kos/libs/libc/include error.c -o error.o
ld -nostdlib -T kos.ld -o libtest.exe --image-base 0 --stack 0x100000 main.o error.o libc.a

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sourcerer@sourcerer-laptop ~/libc/test $ ls
error.c  error.h  main.c 
sourcerer@sourcerer-laptop ~/libc/test $ gcc -c -O2 -fno-builtin-printf -fomit-frame-pointer -I ../include main.c -o main.o
sourcerer@sourcerer-laptop ~/libc/test $ ls
error.c  error.h  main.c  main.o
sourcerer@sourcerer-laptop ~/libc/test $ gcc -c -O2 -fno-builtin-printf -fomit-frame-pointer -I ../include error.c -o error.o
error.c: In function ‘error_tail’:
error.c:60: warning: incompatible implicit declaration of built-in function ‘_exit’
sourcerer@sourcerer-laptop ~/libc/test $ ls
error.c  error.h  error.o  main.c  main.o
sourcerer@sourcerer-laptop ~/libc/test $ ld -nostdlib -T ../kos.ld -o libtest.exe --image-base 0 --stack 0x100000 main.o error.o ../libc.a
ld: unrecognized option '--image-base'
ld: use the --help option for usage information
sourcerer@sourcerer-laptop ~/libc/test $ ld --version
GNU ld (GNU Binutils for Ubuntu) 2.20.1-system.20100303
Copyright 2009 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) a later version.
This program has absolutely no warranty.