Experimental Physics and Industrial Control System
FYI, I have previously reported this issue (directly) to Mr. Sinclair in
Sept. 2016, along with some other edm compilation issues.
There are a number of upcoming issues with newer libraries and
compilers. sigh.
stefani
On 02/02/2017 08:13 AM, Mark Rivers wrote:
> I was afraid of that.
>
> Another solution should be to set a compiler flag that disables the "narrowing" check (Wnarrowing).
>
> Mark
>
>
> -----Original Message-----
> From: Pierrick Hanlet [mailto:[email protected]]
> Sent: Thursday, February 02, 2017 9:57 AM
> To: Mark Rivers; [email protected]
> Subject: Re: problem compiling edm
>
> Hi Mark,
> Thank you for the quick response. Initially this appeared to work, but
> I had many more arrays to which I needed to do this. After having
> modified them all,
> it appears that I've replaced one problem for another. Now I get:
>
>
> ../expString.cc:722:32: warning: ISO C++ forbids converting a string
> constant to 'char*' [-Wwrite-strings]
> /usr/bin/g++ -D_GNU_SOURCE -D_DEFAULT_SOURCE -D_X86_64_ -DUNIX
> -Dlinux -O3 -g -Wall -DSINGLE_THREADED=1 -D__epics__=1
> -mtune=generic -m64 -fPIC -I. -I../O.Common -I. -I. -I..
> -I../../../../include/edm/compiler/gcc
> -I../../../../include/edm/os/Linux -I../../../../include/edm
> -I/home/epics/epicsDEV/base/include/compiler/gcc
> -I/home/epics/epicsDEV/base/include/os/Linux
> -I/home/epics/epicsDEV/base/include
> -I/home/epics/epicsDEV/extensions/include -I../../util
> -I../../lib -I/usr/include -I/usr/include -c ../cursor.cc
> ../cursor.cc: In member function 'void cursorClass::create(Display*,
> Window, Colormap)':
> ../cursor.cc:416:39: error: invalid conversion from 'unsigned char*' to
> 'char*' [-fpermissive]
> cross_width, cross_height, 1, 0, 1 );
> ^
> In file included from ../cursor.h:22:0,
> from ../cursor.cc:19:
> /usr/include/X11/Xlib.h:1611:15: note: initializing argument 3 of
> 'Pixmap XCreatePixmapFromBitmapData(Display*, Drawable, char*, unsigned
> int, unsigned int, long unsigned int, long unsigned int, unsigned int)'
> extern Pixmap XCreatePixmapFromBitmapData(
> ^~~~~~~~~~~~~~~~~~~~~~~~~~~
> ../cursor.cc:419:39: error: invalid conversion from 'unsigned char*' to
> 'char*' [-fpermissive]
> cross_width, cross_height, 1, 0, 1 );
>
> etc.
> Thanks,
> Pierrick
>
>
> On 02/02/2017 02:23 PM, Mark Rivers wrote:
>> That line is this:
>>
>> static char pntrWithHelp_bits[] = {
>> 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3c, 0x00, 0x00, 0x00, 0x42,
>> 0x20, 0x00, 0x00, 0x40, 0x60, 0x00, 0x00, 0x40, 0xe0, 0x00, 0x00, 0x60,
>> 0xe0, 0x01, 0x00, 0x30, 0xe0, 0x03, 0x00, 0x08, 0xe0, 0x07, 0x00, 0x08,
>> 0xe0, 0x0f, 0x00, 0x08, 0xe0, 0x1f, 0x00, 0x00, 0xe0, 0x3f, 0x00, 0x08,
>> 0xe0, 0x03, 0x00, 0x00, 0xe0, 0x06, 0x00, 0x00, 0x60, 0x06, 0x00, 0x00,
>> 0x20, 0x0c, 0x00, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00,
>> 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
>> 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
>> 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
>> 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
>> 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
>>
>> I suspect the problem is that char is a signed type and the compiler is complaining because an integer larger than 127 is being assigned (e.g. 0xe0). What happens if you change that to "static unsigned char"?
>>
>> Mark
>>
>>
>> ________________________________________
>> From: [email protected] [[email protected]] on behalf of Pierrick Hanlet [[email protected]]
>> Sent: Thursday, February 02, 2017 8:15 AM
>> To: [email protected]
>> Subject: problem compiling edm
>>
>> I've a new pc on which I'm running Fedora release 25. I'm using base
>> 3.15.5.
>>
>> I'm attempting to build edm, but whilst attempting to compile, I get:
>>
>> make[2]: Entering directory
>> '/home/epics/epicsDEV/extensions/src/edm/lib/O.linux-x86_64'
>> /usr/bin/g++ -D_GNU_SOURCE -D_DEFAULT_SOURCE -D_X86_64_ -DUNIX
>> -Dlinux -O3 -g -Wall -DSINGLE_THREADED=1 -D__epics__=1
>> -mtune=generic -m64 -fPIC -I. -I../O.Common -I. -I. -I..
>> -I../../../../include/edm/compiler/gcc
>> -I../../../../include/edm/os/Linux -I../../../../include/edm
>> -I/home/epics/epicsDEV/base/include/compiler/gcc
>> -I/home/epics/epicsDEV/base/include/os/Linux
>> -I/home/epics/epicsDEV/base/include
>> -I/home/epics/epicsDEV/extensions/include -I../../util
>> -I../../lib -I/usr/include -I/usr/include -c ../cursor.cc
>> ../cursor.cc: In member function 'void cursorClass::create(Display*,
>> Window, Colormap)':
>> ../cursor.cc:82:50: error: narrowing conversion of '224' from 'int' to
>> 'char' inside { } [-Wnarrowing]
>> 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
>> ^
>> ../cursor.cc:82:50: error: narrowing conversion of '224' from 'int' to
>> 'char' inside { } [-Wnarrowing]
>> ../cursor.cc:82:50: error: narrowing conversion of '224' from 'int' to
>> 'char' inside { } [-Wnarrowing]
>> and many more lines of the same.
>>
>> I can't find this problem in tech-talk, nor with a web search. Has
>> anyone run into this problem and if so, how did you resolve it?
>> Many thanks,
>> Pierrick
>>
>
>
>
--
Stefani Banerian
UW Clinical Cyclotron www.uwmcf.org
UW School of Medicine
UW Box 356043
206-598-0302
gpg key 6642E7EE
fingerprint = BD13 875D 2D03 5E1D 1E3B 8BF7 F4B8 63AD 6642 E7EE
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