RE: Motor record compilation error under win32-x86

["Wang Xiaoqiang" <Xiaoqiang.Wang@psi.ch>]

Hi Ron,

Yes, that is not supported by MSVC. I try to compile a dummy file with
the following contents:

wang_x1@pc7149 /c/test
$ cat test.c
#if #cpu(i386)
    #error CPU i386 asserted
#endif

wang_x1@pc7149 /c/test
$ cl test.c
Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 14.00.50727.762
for 80x86
Copyright (C) Microsoft Corporation.  All rights reserved.

test.c
test.c(1) : error C2014: preprocessor command must start as first
nonwhite space
test.c(1) : fatal error C1017: invalid integer constant expression

Probably removing completely is not necessary. It does not harm if it is
put after checking _WIN32,
because MSVC will not contiue further. This was the case in motor 6-3
release.
#if defined(_WIN32) || defined (_M_IX86) || defined (_X86_)
    #define LSB_First (TRUE)  /* LSB is packed first. */ 
#elif #cpu(i386)
    #define LSB_First (TRUE)  /* LSB is packed first. */ It seems MSVC 

Best,
Xiaoqiang

-----Original Message-----
From: Ron Sluiter [mailto:sluiter@aps.anl.gov] 
Sent: Monday, April 20, 2009 4:22 PM
To: Wang Xiaoqiang
Cc: epics
Subject: Re: Motor record compilation error under win32-x86

Hello Wang,

I am guessing that it is the preprocessor assertions (e.g., #cpu(i386))
that are not supported by MSVC.

I suggest you test this by removing them from the file (motor.h) and
recompiling.  The preprocessor variables MSB_First and LSB_First may not
be correct, but at least we will know what exactly is not supported.

Ron

Wang Xiaoqiang wrote:
> Hi,
>
> When I compile motor 6-4-2 under win32-x86 with vs2008 (cl version 
> 14.00.50727.762), it reports the following errors:
>
> make[1]: Entering directory
>
`/c/epics/synApps_5_4/support/motor/6-4-2/motorApp/MotorSrc/O.win32-x86'
> Installing generic include file ../../../include/motor.h
> cl /nologo /EHsc /GR -c                /D_CRT_SECURE_NO_DEPRECATE
> /D_CRT_NONSTDC_NO_DEPRECATE /D__STDC__=0   /Ox /GL   /W3 /w44355
> /MT -DEPICS_DLL_NO   -I. -I..\\O.Common -I. -I..
> -I..\\..\\..\\include\\os\\WIN32 -I..\\..\\..\\include 
> -Ic:\\epics\\synApps_5_4\\support\\asyn\\4-10\\include
> -Ic:\\epics\\synApps_5_4\\support\\seq\\2-0-12\\include
> -Ic:\\epics\\base-3.14.10\\include\\os\\WIN32
> -Ic:\\epics\\base-3.14.10\\include
> -Ic:\\epics\\synApps_5_4\\support\\motor\\6-4-2\\include       /Tp
> ..\\motorRecord.cc
> motorRecord.cc
> c:\epics\synapps_5_4\support\motor\6-4-2\motorapp\motorsrc\motor.h(126
> )
> : error C2014: preprocessor command must start as first nonwhite space
> c:\epics\synapps_5_4\support\motor\6-4-2\motorapp\motorsrc\motor.h(126
> )
> : fatal error C1017: invalid integer constant expression
> make[1]: *** [motorRecord.obj] Error 2
> make[1]: Leaving directory
>
`/c/epics/synApps_5_4/support/motor/6-4-2/motorApp/MotorSrc/O.win32-x86'
> make: *** [install.win32-x86] Error 2
>
> In motor.h(126): #if defined(_WIN32) || #cpu(i386) || defined 
> (_M_IX86)
> || defined (_X86_),
> the #cpu(i386) assertion confuses compiler. If I split it over two 
> lines then it works.
> #if defined(_WIN32) || defined (_M_IX86) || defined (_X86_)
>     #define LSB_First (TRUE)  /* LSB is packed first. */ #elif 
> #cpu(i386)
>     #define LSB_First (TRUE)  /* LSB is packed first. */ It seems MSVC

> does not accept directives mixed.
>
> --
> Dr. Xiaoqiang Wang
> Paul Scherrer Institut, WBGB/010
> 5232 Villigen PSI, Switzerland
>
>