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MAWK ON V7 UNIX
09/08/91 Carl Mascott
1. Prerequisites
hash8 : from comp.sources.unix volume 15
used by V7 Makefiles
When you build hash8 you should add all long ( > 7 char)
runtime library function names to the reserved word table
memcmp(), memcpy(), memset()
included in stringlib, comp.sources.unix volume 6
simple to write if necessary
2. Procedure
a. In ~/mawk:
Rename Makefile.v7 Makefile
Rename *.c *.cl
Rename *.xc *.xcl
Rename *.h *.hl
Check CFLAGS and LDFLAGS in Makefile
Repeat the applicable portions of the above
in ~/mawk/rexp and in ~/mawk/config
b. From ~/mawk:
make config/V7.h
make config/Idefault.h
ln config/V7.h config.h
c. Do a make in ~/mawk/rexp
d. Do a make in ~/mawk
3. Notes
a. V7 sh scripts
The original mawk_test and fpe_test wouldn't run on V7. V7 sh doesn't
have a comment character ('#'). Since ':' is actually a statement its
arguments need to be quoted if they contain any special characters.
b. SW_FP_CHECK
SW_FP_CHECK has been added. The particular implementation is
for XENIX-68K 2.3A. There are no checks preceding calls to
fmod() because the check is built into mawk's fmod(). This
would be a problem on a system that needs SW_FP_CHECK but
already has fmod() in the RTL. The work-around is to always
use mawk's fmod() if using SW_FP_CHECK.
SW_FP_CHECK is activated only if XNX23A is defined. The
standard V7 Makefile doesn't define XNX23A, so you needn't
concern yourself with SW_FP_CHECK.
c. 3-argument open()
Mawk always calls open() with the 3rd argument set to 0. V7
open() really takes only 2 arguments. With most UNIX C compilers
extra arguments in function calls are harmless, so the open()
calls have not been altered for V7.
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