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epics-base/README.WIN32

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Compiling EPICS on WIN32 (Windows95/NT)
---------------------------------------
Original port of EPICS base to WIN32 (Windows95/NT)
was done by Kay-Uwe Kasemir 11/96
questions & comments please mail to johill@lanl.gov
0) what you will get
--------------------
Right now this port of EPICS to WIN32 should allow you to
* compile almost all of EPICS base using {Tornado, MS Visual C, perl,
GNU make} (only {MS Visual C, perl, GNU make} if you prefer
to compile only the host portions of EPICS base).
* load EPICS on an IOC (486, pentium, 68k, ...),
load simple databases
(no drivers/devices for real I/O available, yet.
Some Greenspring IP support [Relay, Dig, ADC, DAC] is in progress)
* build and use ca.dll on NT or Win95 to access all IOCs,
as well as the Com-library, gdd-library, and cas-library as DLLs.
The remaining libraries are statically linked and
therefore only accessible from programming languages like C,
not general WIN32 apps.
* build gdd, cas and a demo of the new portable CA server on WIN32.
1) see what you have
--------------------
To compiler EPICS on WIN32, we need
WindRiver System's Tornado (used: 1.0) (not required if host only build)
Microsoft's Visual C/C++ (used: 4.0) (borland C++ rumored to work also)
and some tools:
gnu make www.gnu.org
perl www.perl.org (used 5.003)
The perl interpreter and gnu make are available 'on the net'
as sources which compile with MS Visual C++.
If you cannot/don't want to find them, contact me, please!
2) set environment variables
Your path should include:
- The EPICS-binaries that we are about to build in <EPICS>base/bin/WIN32
- The System (for me it's in NT40...)
- The MS Visual C compiler binaries
Check with e.g.:
>echo %Path%
C:\WINNT35.0\system32;
C:\WINNT35.0;
c:\msdev\bin;
c:\perl5\bin;
c:\make-3.75\WinRel;
c:\epics\base\bin\win32 (really where INSTALL_LOCATION specifies)
On NT, "Path" is defined by the operatin system, on Win95, it's "PATH" instead.
MS Visual C and Tornado should be installed properly with
these env. variables set:
WIND_BASE=c:\Tornado (required for cross development only)
WIND_HOST_TYPE=x86-win32 (required for cross development only)
This way the EPICS makesystem can locate Tornado
without any changes to the files in base/config.
So for pc486 the settings in CONFIG_SITE where
you specify the location of VxWorks are ignored,
this information is taken from WIND_BASE and _HOST_TYPE!!
MSDevDir=C:\MSDEV
include=c:\msdev\include;c:\msdev\mfc\include
lib=c:\msdev\lib;c:\msdev\mfc\lib
Select host arch to build:
HOST_ARCH=WIN32 (used by the make system)
(Setting env. vars. is different: for NT, use Settings/System,
for Win95 use autoexec.bat)
3) building EPICS
-----------------
Prepare apx. 2 ltr. Tee and type:
cd <epics>/base
make (use gnu make)
Watch for errors and send them to me.
Known problems:
* gnumake seems to be faster than WIN32 sometimes
which results in warnings/errors like
"file has modification date in the future"
for newly vreated things.
Very seldom this is fatal, so you have to
stop gnumake and restart it.
* This is strange because Windows95/NT don't care
about upper/lower case:
WIN32 is WIN32, not win32. Gnumake fails
if e.g. base/src/include/os/WIN32 is ...win32.
Good luck !
-Kay