Compiling Notes

RPM Packages
I always confuse the RPM packages that I use to compile things with GCC. I want to use as much as open source tools available. Here it is what I install:
 * yum install git gcc make libc-devel binutils
 * watcom-wrc
 * watcom-wlink-hll

Checking the Enviroments
Execute %INCLUDE% and see if soemthing shows up.

CHAR * {aka char *}

 * Warning

gcc -Wall -Zomf -c -O2 bitcat2.c -o bitcat2.obj bitcat2.c: In function 'main': bitcat2.c:36:29: warning: pointer targets in passing argument 2 of 'WinRegisterClass' differ in signedness [-Wpointer-sign] 36 |      WinRegisterClass(hab, szClientClass, ClientWndProc, CS_SIZEREDRAW, 0); |                            ^19:25, 21 April 2023 (CEST)19:25, 21 April 2023 (CEST) |                            |      |                             CHAR * {aka char *} In file included from W:/usr/include/os2.h:39, from bitcat2.c:4: W:/usr/include/os2emx.h:6138:47: note: expected 'PCSZ' {aka 'const unsigned char *'} but argument is of type 'CHAR *' {aka 'char *'}

I replaced static CHAR szClientClass[] = "BitCat2"; for unsigned char    szClientClass[] = "BitCat2"; and warnings were removed.
 * Fix

Change to WLINK
You need to add: set EMXOMFLD_TYPE=WLINK set EMXOMFLD_LINKER=wl.exe Remember that the Wacom Linker is "wl.exe" and is on the "watcom-wlink-hll" RPM package.

Resource Compiler
Reading binary resource file walker.res (0) RC: error - Only integer TYPE allowed. RC: 1 error detected make: *** [walker.exe] Error 1
 * Error 1
 * It is possible of an error on the SET INCLUDE directory. Type %INCLUDE% and check if it is pointing to the directory that contains OS2.H

[E:\PROJECTS\SAMPLEPACK\PMWALKER]make  2>&1  | tee make.out wrc -r walker.rc Open Watcom Windows and OS/2 Resource Compiler Version 2.0beta1 LA Portions Copyright (c) 1993-2002 Sybase, Inc. All Rights Reserved. Source code is available under the Sybase Open Watcom Public License. See http://www.openwatcom.org/ for details. walker.rc(2): Error! E062: Unable to open 'os2.h' make: *** [walker.res] Error 9
 * Error 2


 * It is possible of an error on the SET INCLUDE directory. Type %INCLUDE% and check if it is pointing to the directory that contains OS2.H