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fix build break and incorect OpenWatcom configuration #2

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fix build break and incorect OpenWatcom configuration #2

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2 changes: 1 addition & 1 deletion README.txt
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Expand Up @@ -40,7 +40,7 @@ How to target ELKS using owtarget16:
* In a terminal window:
* Run: git clone https://github.com/pts/owtarget16
* cd into the extracted directory containing binl/owcc.
* Run: export WATCOM="$PWD"; export PATH="$WATCOM/binl:$PATH" INCLUDE="$WATCOM/h"
* Run: export WATCOM="$PWD"; export PATH="$WATCOM/binl:$PATH" INCLUDE="$WATCOM/lh"
* cd to the owtarget16 directory (created by `git clone' above).
* Run: ./compile.sh
* To try the example programs, in the same terminal window:
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4 changes: 2 additions & 2 deletions compile.sh
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Expand Up @@ -3,15 +3,15 @@
set -ex

# gcc -W -Wall -s -O2 -o prog16cv prog16cv.c # Any host.
owcc -W -Wall -Wextra -s -O2 -fno-stack-check -o prog16cv prog16cv.c # For the Linux host.
owcc -Wall -Wextra -s -O2 -fno-stack-check -o prog16cv prog16cv.c # For the Linux host.

for PROG in hello printarg rot13; do
# There is no -nostdinc.
# OpenWatcom 2 C compiler. https://open-watcom.github.io/
# -Wl,disable -Wl,1014 hides this: Warning! W1014: stack segment not found
# !! Specify the stack size in the .c file (?).
# Stack size: 0x400 is enough, 0x380 seems to be too low (fails with `"$PROG": Out of space) in ELKS 0.2.0.
owcc -bos2 -fnostdlib -Wl,disable -Wl,1014 -Wl,option -Wl,start=_start_ -Wl,option -Wl,dosseg -Wl,option -Wl,stack=0x400 -Os -s -fno-stack-check -march=i86 -W -Wall -Wextra -o "$PROG".os2 "$PROG".c
owcc -bos2 -march=i86 -I${WATCOM}/h -fnostdlib -Wl,disable -Wl,1014 -Wl,option -Wl,start=_start_ -Wl,option -Wl,dosseg -Wl,option -Wl,stack=0x400 -Os -s -fno-stack-check -Wall -Wextra -o "$PROG".os2 "$PROG".c
./prog16cv -f elks -o "$PROG".elks "$PROG".os2
rm -f "$PROG".os2
done
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4 changes: 0 additions & 4 deletions prog16cv.c
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Expand Up @@ -13,10 +13,6 @@
#include <sys/stat.h>
#include <unistd.h>

#if defined(__WATCOMC__) && defined(__LINUX__)
#undef O_BINARY /* Work around OpenWatcom libc bug. */
#endif

#ifndef O_BINARY
#define O_BINARY 0
#endif
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