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ID Date Author Topic Subject
  284   02 Aug 2006 Shawn BishopBug ReportMIDAS packaged examples: compilation bug?
Hi All,

I switched to Sci. Linux 4.3, from FC5, and was able to get the guts of MIDAS to compile without any difficulties. Now, I have followed the "Quick Start" instructions (http://ladd00.triumf.ca/~daqweb/doc/midas/html/quickstart.html ) to the letter and have attempted to start my DAQ coding using the hbookexpt as a template.

So, as per the quickstart instructions, I have gone into the /midas/examples/hbookexpt directory and have done a "make" (after doing my own make clean). Below, in red, is the output of the compilation attempt. Are there .h files missing to be causing all of these "undefined reference" warnings/errors?

The funny thing is, despite all of these warnings, and the eventual error, the object files were made.

Anyone have an idea what's going on here?

Cheers,
Shawn

[midas@daruma hbookexpt]$ make clean
rm -f *.o *~ \#*
[midas@daruma hbookexpt]$ make
cc -O3 -g -I/home/midas/midas/include -I/home/midas/midas/drivers/camac -DOS_LINUX -Dextname -c -o camacnul.o /home/midas/midas/drivers/camac/camacnul.c
cc -O3 -g -I/home/midas/midas/include -I/home/midas/midas/drivers/camac -DOS_LINUX -Dextname -o frontend frontend.c camacnul.o \
/home/midas/midas/linux/lib/mfe.o /home/midas/midas/linux/lib/libmidas.a -lm -lz -lutil -lnsl -lpthread
cc -O3 -g -I/home/midas/midas/include -I/home/midas/midas/drivers/camac -DOS_LINUX -Dextname -o adccalib.o -c adccalib.c
cc -O3 -g -I/home/midas/midas/include -I/home/midas/midas/drivers/camac -DOS_LINUX -Dextname -o adcsum.o -c adcsum.c
cc -O3 -g -I/home/midas/midas/include -I/home/midas/midas/drivers/camac -DOS_LINUX -Dextname -o scaler.o -c scaler.c
cc -O3 -g -I/home/midas/midas/include -I/home/midas/midas/drivers/camac -DOS_LINUX -Dextname -o frontend.o -c frontend.c
cc -O3 -g -I/home/midas/midas/include -I/home/midas/midas/drivers/camac -DOS_LINUX -Dextname -o analyzer.o -c analyzer.c
g77 -o fal /home/midas/midas/linux/lib/fal.o frontend.o camacnul.o \
analyzer.o adccalib.o adcsum.o scaler.o /cern/pro/lib/libpacklib.a \
/home/midas/midas/linux/lib/libmidas.a -lm -lz -lutil -lnsl -lpthread
/usr/bin/ld: Warning: alignment 16 of symbol `pawc_' in /home/midas/midas/linux/lib/fal.o is smaller than 32 in analyzer.o
/usr/bin/ld: Warning: alignment 16 of symbol `pawc_' in /home/midas/midas/linux/lib/fal.o is smaller than 32 in /cern/pro/lib/libpacklib.a(hbook1.o)
/usr/bin/ld: Warning: alignment 16 of symbol `pawc_' in /home/midas/midas/linux/lib/fal.o is smaller than 32 in /cern/pro/lib/libpacklib.a(hdelet.o)
/usr/bin/ld: Warning: alignment 16 of symbol `pawc_' in /home/midas/midas/linux/lib/fal.o is smaller than 32 in /cern/pro/lib/libpacklib.a(hf1.o)
/usr/bin/ld: Warning: alignment 16 of symbol `pawc_' in /home/midas/midas/linux/lib/fal.o is smaller than 32 in /cern/pro/lib/libpacklib.a(hf1aut.o)
/usr/bin/ld: Warning: alignment 16 of symbol `pawc_' in /home/midas/midas/linux/lib/fal.o is smaller than 32 in /cern/pro/lib/libpacklib.a(hspace.o)
/usr/bin/ld: Warning: alignment 16 of symbol `pawc_' in /home/midas/midas/linux/lib/fal.o is smaller than 32 in /cern/pro/lib/libpacklib.a(hnbufd.o)
/usr/bin/ld: Warning: alignment 16 of symbol `pawc_' in /home/midas/midas/linux/lib/fal.o is smaller than 32 in /cern/pro/lib/libpacklib.a(hntmpd.o)
/home/midas/midas/linux/lib/fal.o(.text+0x5e58): In function `mana_init()':
src/fal.c:4420: undefined reference to `analyzer_init()'
/home/midas/midas/linux/lib/fal.o(.text+0x620b): In function `mana_exit()':
src/fal.c:4490: undefined reference to `analyzer_exit()'
/home/midas/midas/linux/lib/fal.o(.text+0x6a3a): In function `register_equipment()':
src/fal.c:4787: undefined reference to `poll_event(int, int, unsigned long)'
/home/midas/midas/linux/lib/fal.o(.text+0x703b):src/fal.c:4821: undefined reference to `interrupt_configure(int, int, int)'
/home/midas/midas/linux/lib/fal.o(.text+0x7786): In function `tr_resume(int, char*)':
src/fal.c:3799: undefined reference to `resume_run(int, char*)'
/home/midas/midas/linux/lib/fal.o(.text+0x77a2):src/fal.c:3803: undefined reference to `ana_resume_run(int, char*)'
/home/midas/midas/linux/lib/fal.o(.text+0x7822): In function `tr_pause(int, char*)':
src/fal.c:3770: undefined reference to `pause_run(int, char*)'
/home/midas/midas/linux/lib/fal.o(.text+0x783e):src/fal.c:3774: undefined reference to `ana_pause_run(int, char*)'/home/midas/midas/linux/lib/fal.o(.text+0x78bc): In function `tr_stop_fal(int, char*)':
src/fal.c:3705: undefined reference to `end_of_run(int, char*)'
/home/midas/midas/linux/lib/fal.o(.text+0x7979):src/fal.c:3722: undefined reference to `ana_end_of_run(int, char*)'
/home/midas/midas/linux/lib/fal.o(.text+0x7ca8): In function `tr_start_fal(int, char*)':
src/fal.c:3672: undefined reference to `begin_of_run(int, char*)'
/home/midas/midas/linux/lib/fal.o(.text+0x7cc6):src/fal.c:3677: undefined reference to `ana_begin_of_run(int, char*)'
/home/midas/midas/linux/lib/fal.o(.text+0x7d58): In function `interrupt_enable(unsigned long)':
src/fal.c:5074: undefined reference to `interrupt_configure(int, int, int)'
/home/midas/midas/linux/lib/fal.o(.text+0x89bd): In function `scheduler()':
src/fal.c:5364: undefined reference to `poll_event(int, int, unsigned long)'
/home/midas/midas/linux/lib/fal.o(.text+0x8bb5):src/fal.c:5390: undefined reference to `frontend_loop()'
/home/midas/midas/linux/lib/fal.o(.text+0x901e): In function `main':
src/fal.c:5610: undefined reference to `frontend_init()'
/home/midas/midas/linux/lib/fal.o(.text+0x9122):src/fal.c:5659: undefined reference to `frontend_exit()'
/home/midas/midas/linux/lib/fal.o(.gnu.linkonce.d.DW.ref.__gxx_personality_v0+0x0): undefined reference to `__gxx_personality_v0'
collect2: ld returned 1 exit status
make: *** [fal] Error 1
[midas@daruma hbookexpt]$
  283   01 Aug 2006 Konstantin OlchanskiBug FixUser-tunable buffer sizes
By default, MIDAS creates shared memory event data buffers of default size
EVENT_BUFFER_SIZE defined in midas.h and until now making of large data buffers
for high data rate or large event size experiments was complicated.

Now, bm_open_buffer() will try to read the event buffer size from ODB. If
"/Experiment/Buffer Sizes/BUFFER_NAME" of type DWORD exists, it's value is used
as the buffer size, overriding the default value.

For example, to increase the size of the default MIDAS event buffer ("SYSTEM")
to 2000000 bytes, shutdown all MIDAS programs, delete the old .SYSTEM.SHM file
(and the shared memory segment, using ipcrm). Then run odbedit, cd /Experiment,
mkdir "Buffer Sizes", cd "Buffer Sizes", create DWORD SYSTEM, set SYSTEM
2000000. Then start the rest of the MIDAS programs. Check that the buffer has
the correct size by looking at the size of .SYSTEM.SHM and of the shared memory
segment (ipcs).

This method work for all MIDAS buffers, except for ODB, where the size has to be
specified at creation time using the odbedit command "-s" argument.

K.O.
  282   31 Jul 2006 Konstantin OlchanskiBug FixFix user memory corruption in ODB
We have been seeing consistent user memory corruption while setting up a new
experiment. This has been traced to a user memory overwrite in ODB db_set_data()
function and this problem is now fixed. This error was triggered by our frontend
code constantly changing the size of a MIDAS data bank that was also written
into ODB via the RO_ODB option. K.O.
  281   28 Jul 2006 Konstantin OlchanskiBug Fixmhttpd: use more strlcpy(), fix a few bugs
While investigating the mhttpd password error with the MacOS Safari browser, I
found that it was caused by an strcpy() buffer overflow. With Stefan's blessing,
I now converted most uses of strcpy() and strcat() to strlcpy() and strlcat().

This fixes the Safari password problem (it was memory corruption in mhttpd).

While validating these changes, I also found an incorrect use of sizeof() in the
mhttpd history code for plotting run markers. I fixed that as well.

P.S. The remaining strcpy() calls look safe wrt buffer overflows. There are no
strcat() calls left. But there is still a large number of unsafe-looking
sprintf() uses.

K.O.
  280   28 Jul 2006 Shawn BishopBug ReportLatest FC5 Compilation attempt
Perhaps some progess? Problem for compilation on FC5 now seems to be in odb.c for revision 3189. Compilation output as follows: --Shawn

[midas@daruma ~/midas]$ make
cc -c -g -O2 -Wall -Wuninitialized -Iinclude -Idrivers -I../mxml -Llinux/lib -DINCLUDE_FTPLIB -D_LARGEFILE64_SOURCE -m32 -DOS_LINUX -fPIC -Wno-unused-function -o linux/lib/odb.o src/odb.c
src/odb.c: In function ‘db_open_database’:
src/odb.c:805: warning: dereferencing type-punned pointer will break strict-aliasing rules
src/odb.c: In function ‘db_lock_database’:
src/odb.c:1350: warning: dereferencing type-punned pointer will break strict-aliasing rules
cc: Internal error: Segmentation fault (program cc1)
Please submit a full bug report.
See <URL:http://bugzilla.redhat.com/bugzilla> for instructions.
make: *** [linux/lib/odb.o] Error 1
  279   27 Jul 2006 Stefan RittBug ReportMIDAS revision 3184 bombs on FC5

Shawn Bishop wrote:
include/musbstd.h:29:17: error: usb.h: No such file or directory


This indicates that you are missing libusb. If you can find a RPM for libusb, that will solve your problem. But anyhow we should modify the makefile such that it does not try to compile the USB drivers if libusb is missing on a system.
  278   27 Jul 2006 Shawn BishopBug ReportMIDAS revision 3184 bombs on FC5
Hi All,

I just did a fresh download of midas (revision 3184) onto a newly setup FC5 box. Compilation bombs. Printout of compiler output as follows:

Regards,
Shawn

[midas@daruma midas]$ make
cc -c -g -O2 -Wall -Wuninitialized -Iinclude -Idrivers -I../mxml -Llinux/lib -DINCLUDE_FTPLIB -D_LARGEFILE64_SOURCE -m32 -DOS_LINUX -fPIC -Wno-unused-function -o linux/lib/musbstd.o drivers/usb/musbstd.c
In file included from drivers/usb/musbstd.c:14:
include/musbstd.h:29:17: error: usb.h: No such file or directory
In file included from drivers/usb/musbstd.c:14:
include/musbstd.h:32: error: expected specifier-qualifier-list before ‘usb_dev_handle’
drivers/usb/musbstd.c:54:1: warning: "HAVE_LIBUSB" redefined
include/musbstd.h:27:1: warning: this is the location of the previous definition
drivers/usb/musbstd.c: In function ‘musb_open’:
drivers/usb/musbstd.c:157: warning: implicit declaration of function ‘usb_init’
drivers/usb/musbstd.c:158: warning: implicit declaration of function ‘usb_find_busses’
drivers/usb/musbstd.c:159: warning: implicit declaration of function ‘usb_find_devices’
drivers/usb/musbstd.c:161: warning: implicit declaration of function ‘usb_get_busses’
drivers/usb/musbstd.c:161: warning: assignment makes pointer from integer without a cast
drivers/usb/musbstd.c:161: error: dereferencing pointer to incomplete type
drivers/usb/musbstd.c:162: error: dereferencing pointer to incomplete type
drivers/usb/musbstd.c:162: error: dereferencing pointer to incomplete type
drivers/usb/musbstd.c:163: error: dereferencing pointer to incomplete type
drivers/usb/musbstd.c:163: error: dereferencing pointer to incomplete type
drivers/usb/musbstd.c:166: error: ‘usb_dev_handle’ undeclared (first use in this function)
drivers/usb/musbstd.c:166: error: (Each undeclared identifier is reported only once
drivers/usb/musbstd.c:166: error: for each function it appears in.)
drivers/usb/musbstd.c:166: error: ‘udev’ undeclared (first use in this function)
drivers/usb/musbstd.c:168: warning: implicit declaration of function ‘usb_open’
drivers/usb/musbstd.c:174: warning: implicit declaration of function ‘usb_set_configuration’
drivers/usb/musbstd.c:181: error: dereferencing pointer to incomplete type
drivers/usb/musbstd.c:181: error: dereferencing pointer to incomplete type
drivers/usb/musbstd.c:187: warning: implicit declaration of function ‘usb_claim_interface’
drivers/usb/musbstd.c:194: error: dereferencing pointer to incomplete type
drivers/usb/musbstd.c:194: error: dereferencing pointer to incomplete type
drivers/usb/musbstd.c:200: error: ‘MUSB_INTERFACE’ has no member named ‘dev’
drivers/usb/musbstd.c:201: error: ‘MUSB_INTERFACE’ has no member named ‘usbinterface’
drivers/usb/musbstd.c: In function ‘musb_close’:
drivers/usb/musbstd.c:317: warning: implicit declaration of function ‘usb_release_interface’
drivers/usb/musbstd.c:317: error: ‘MUSB_INTERFACE’ has no member named ‘dev’
drivers/usb/musbstd.c:317: error: ‘MUSB_INTERFACE’ has no member named ‘usbinterface’
drivers/usb/musbstd.c:320: warning: implicit declaration of function ‘usb_close’
drivers/usb/musbstd.c:320: error: ‘MUSB_INTERFACE’ has no member named ‘dev’
drivers/usb/musbstd.c: In function ‘musb_write’:
drivers/usb/musbstd.c:339: warning: implicit declaration of function ‘usb_bulk_write’
drivers/usb/musbstd.c:339: error: ‘MUSB_INTERFACE’ has no member named ‘dev’
drivers/usb/musbstd.c: In function ‘musb_read’:
drivers/usb/musbstd.c:385: warning: implicit declaration of function ‘usb_bulk_read’
drivers/usb/musbstd.c:385: error: ‘MUSB_INTERFACE’ has no member named ‘dev’
drivers/usb/musbstd.c: In function ‘musb_reset’:
drivers/usb/musbstd.c:435: warning: implicit declaration of function ‘usb_reset’
drivers/usb/musbstd.c:435: error: ‘MUSB_INTERFACE’ has no member named ‘dev’
make: *** [linux/lib/musbstd.o] Error 1
[midas@daruma midas]$
  277   25 Jul 2006 Konstantin OlchanskiBug Reportmhttpd passwords broken for MacOS 10.4 Safari
I observe that the mhttpd passwords do not work correctly for the Safari web browser on MacOS 10.4.7: 
Safari 2.0.4 (419.3). For example, I cannot submit elog messages- the system gets stuck on the 
"Password" page. The Safari browser in MacOS 10.3 works fine. Mozilla/Firefox works fine. (Also would be 
useful if "remember password" worked with MIDAS, in any browser). K.O.
  276   24 Jul 2006 Stefan RittBug ReportElog attachments

Art Olin wrote:
Hi. When I attach the file below, Mix+Positronorig.xlx to an elog, and then open it or download it to disk, the file, 060... is severely truncated.
-rw-r--r-- 1 alpha users 17408 Jul 24 11:25 Mix+Positronorig.xls
-rw-r--r-- 1 alpha users 1 Jul 24 11:04 060724_100544_Mix+Positron Cabling 20060723.xls

It's something to do with long filenames or special characters in filenames. Worked OK when I renamed the original file to M1.xls.


You should not use "+" in a file name for elog.
  275   24 Jul 2006 Art OlinBug ReportElog attachments
Hi. When I attach the file below, Mix+Positronorig.xlx to an elog, and then open it or download it to disk, the file, 060... is severely truncated.
-rw-r--r-- 1 alpha users 17408 Jul 24 11:25 Mix+Positronorig.xls
-rw-r--r-- 1 alpha users 1 Jul 24 11:04 060724_100544_Mix+Positron Cabling 20060723.xls

It's something to do with long filenames or special characters in filenames. Worked OK when I renamed the original file to M1.xls.
  274   24 Jul 2006 Sergio BallestreroForumFile output for histories
Hi Art,
you can make the process somewhat less painful by using the Plink (from PuTTY) to run mhist as a remote command, piping the output to a local file:
http://the.earth.li/~sgtatham/putty/0.58/htmldoc/Chapter7.html#plink-batch


Art Olin wrote:

Using mhist is how I'll start, but I'm getting substantial resistance. It's not so much the command line that's the problem. First I have to install an ssh client on their machines! Then they ssh to the server, pipe the result to a file, then ftp the file back to their machine.
Art
  273   23 Jul 2006 Art OlinForumFile output for histories
Hi, Stefan,

Using mhist is how I'll start, but I'm getting substantial resistance. It's not so much the command line that's the problem. First I have to install an ssh client on their machines! Then they ssh to the server, pipe the result to a file, then ftp the file back to their machine.

A browser implementation of this is much simpler.

I agree that the "View Event Status idea is not practical. I didn't know about the GIF implementation of the histories.
Art
  272   23 Jul 2006 Stefan RittForumFile output for histories

Art Olin wrote:
Basically we need the output from the mhist code. The most convenient, and possibly easiest implementation would be to select required data (ID, variable, time range) in the midas history display, click a button requesting file output and input a file name. One might also want to specify the interval time required.


So what is wrong with using mhist directly? I understand that some users used to point and click might have hard time to start a command line utility, but I'm sure that I teach anybody to use mhist much faster compared to the time I would have to spend on implementing such a feature in the web interface. Well, I'll keep it in mind, but it has low priority.


Art Olin wrote:
A related nice feature would be like the root "view event status" , where text at the bottom of the history would display the position of the cursor in the history chart coordinates. Probably more work and less important to us.


Well if you teach me how to do this I'm happy to implement it. We are in a browser, and the history plot is a dump GIF image, while the ROOT windows is a native application. One would have to use some fance Javascript to implement such a thing, but I have no clue of how to do that.

- Stefan
  271   23 Jul 2006 Art OlinForumFile output for histories
The ALPHA experiment at CERN has recently adopted MIDAS, and the history data in numerical form is needed by the collaboration. Furthermore the DAQ is running under linux and most collaborators are windows or mac users, so it should be available in a platform independent way.

Basically we need the output from the mhist code. The most convenient, and possibly easiest implementation would be to select required data (ID, variable, time range) in the midas history display, click a button requesting file output and input a file name. One might also want to specify the interval time required.

A related nice feature would be like the root "view event status" , where text at the bottom of the history would display the position of the cursor in the history chart coordinates. Probably more work and less important to us.

Comments on the practicality?
  270   11 Jul 2006 Razvan Stefan GorneaForumTundra Universe CA91C042
I am not using Midas but I need some help from somebody experienced with VME access using the Tundra Universe, so I thought here I have a chance ...

I have a GE Fanuc 7700 and use the vme_universe driver (ver. 3.3). In the past I programed for a DAQ board using A24/D16. Now I have a new board using A24/MB and I am really last!

So the board has some 64-bit registers and some 32-bit registers (all aligned on 64-bit) and a FIFO to read the main data. After reading the user manual for universe chip and the docs for the driver I am still confused about how things are supposed to work.

First my understanding is that for reading 64-bit I need anyway the multiplex block mode. But nowhere I could find if the multiplex mode supports 32-bit transfers. Should I map two windows on the same VME address range, one for A24/D32 and one for A24/MB? Or read everything with an unsigned long long and cast to unsigned int all 32-bit registers?

Second I don't know how to handle the FIFO which is in the middle of the address range. When the board has a trigger I have to read more than 100000 times this FIFO. If I simply read at the FIFO address 100000 times do I get the VME multiplex block mode (if the window has been mapped with A24/MB address modifier)? How does the chip/driver know not to send the address and just do the data cycle after the first read?

I also had the naive idea to have a master window mapped on the board address range to access all the registers except the FIFO and to create a DMA buffer for the FIFO (FIFO readout is where most of the work is anyway so I guess an advantage is that will free the CPU) but it seems to me that the dma_transfer function in the kernel module increments the address. I don't dare change this since I don't even understand the exact relationship between accesses to the mapped window and what's happening on the VME bus.

Thanks for any help!
  269   13 Jun 2006 Stefan RittInfoScheduler changed for slow control equipment
The schedule in mfe.c is used both for "normal" front-ends and for "slow-control" front-ends. Unfortunately it was only optimized for the first class. This lead to the fact that the slow control equipment was read out at different speed depending if the run is started or not. Furthermore, the maximum readout speed was somehow limited. This has been changed in the current version of mfe.c (SVN revision 3146). There are now two ways to control the readout speed of slow control equipment:

1) The "event limit" in the equipment list can be used as minimum time between readouts. I'm not happy about the "mis-use" of this variable, but it has been there since the beginning. If I would change it now, all front-ends on this world would have to be changed, which I maybe not a good idea. If this event limit is set to let's say 10, then the slow control equipment is read out with a maximum speed of 1/10ms = 100Hz. That means up to 100 variables (not complete equipments) are read out per second. If an equipment has 200 variables, each variable is then read out every two seconds of course. This number can be used to limit the readout speed differently for different equipments. Like one might want to read a sensitive pressure as often as possible, but some beamline magnet values only once every minute.

2) By default, the scheduler runs now at "full speed" when slow control equipment is present, resulting in a 100% CPU usage. To avoid this, following code can be added into the frontend_loop function:

BOOL frontend_call_loop = TRUE;

INT frontend_loop()
{
/* don't eat up all CPU time */
return cm_yield(10);
}

This limits the readout speed of all slow control equipment again to 100Hz, but avoids the 100% CPU usage. On most operating systems, the minimum time is 10ms as shown above, since this is the basic time slice of a process.

The readout scheme of slow control equipment will be re-visited this summer, when multi-threaded slow control front-ends will be implemented.
  268   13 Jun 2006 Stefan RittInfoZLIB dependency modified
Due to recent problems with the ROME analyzer having zlib.h both in the
system and in the midas tree it has been decided to change the zlib policy in midas. By default, zlib support is not included in the midas analyzer. If one want it (but I guess only very few experiments need that), one can do a

make NEED_ZLIB=1

to compile zlib support into mana.c

Under linux (&Co), the zlib is these days normally pre-installed. The header file will therefor be taken from /usr/include and the library from /usr/lib/libz.a. Under Windows, the zlib is still included in the distribution, and has to be manually added to the Visual C++ project file.
  267   09 Jun 2006 Stefan RittBug Fixfix compilation of musbstd.h, add it back to libmidas
> I fixed the compilation of musbstd.h (it required -DHAVE_LIBUSB on Linux, but
> nothing knew about defining it) and put musbstd.o back into libmidas (USB
> support should be part of the standard base midas library). K.O.

I'm not so sure about that. One could consider musbstd.o as a driver, and the
philosophy used for midas programs is that drivers get added explicitly when
compiling a frontend. We do not put mvmestd.c and mcstd.c into libmidas since for
different interfaces a different driver might be required. If we at some point use
an usb library different than libusb.a, we would have to compile different
libmidas for these different drivers.

I know it's convenient to have things in libmidas and not having to specify it
expliceitely for each frontend, but it is then somehow inconsistent with drivers
for vme and camac. So please reconsider this again.

- Stefan
  266   08 Jun 2006 Konstantin OlchanskiBug ReportMidas does not build on Fedora 5
Fresh svn checkout of MIDAS does not build on Fedora 5, I get this error:

cc -c -g -O2 -Wall -Wuninitialized -Iinclude -Idrivers -I../mxml -Llinux/lib
-DINCLUDE_FTPLIB   -D_LARGEFILE64_SOURCE -DHAVE_ROOT -pthread
-I/triumfcs/trshare/olchansk/root/root_v5.10.00_SL40/include -m32 -DOS_LINUX
-fPIC -Wno-unused-function -o linux/lib/odb.o src/odb.c
src/odb.c: In function 'db_open_database':
src/odb.c:805: warning: dereferencing type-punned pointer will break
strict-aliasing rules
src/odb.c: In function 'db_lock_database':
src/odb.c:1350: warning: dereferencing type-punned pointer will break
strict-aliasing rules
cc: Internal error: Segmentation fault (program cc1)
Please submit a full bug report.
See <URL:http://bugzilla.redhat.com/bugzilla> for instructions.
make: *** [linux/lib/odb.o] Error 1

If I compile odb.c without "-O2", the rest of MIDAS builds without any more errors.

The observed warnings are (I do not know what they mean):
warning: dereferencing type-punned pointer will break strict-aliasing rules
warning: missing sentinel in function call (Cannot do without sentinels, eh?)
warning: pointer targets in passing argument 3 of 'getsockname' differ in signedness
warning: non-local variable '<anonymous struct> out_info' uses anonymous type

The "invalid lvalue" errors seem to have been successfully vanquished.

K.O.
  265   08 Jun 2006 Konstantin OlchanskiBug Fixupdated vmicvme driver
I commited the latest VMIC VME driver we use at TRIUMF. It has working support
for D32 and D64 DMA and can move data from the SIS3820 multiscaler through the
MIDAS frontend at > 30 Mbytes/sec on our VMICVME-7805 machines. The actual DMA
speed on the VME bus is around 50 Mbytes/sec, effective data rate is lower
because of a memcpy() from the kernel DMA buffer into user memory (required by
the MIDAS mvmestd.h interface, quite inefficient for DMA operations). K.O.
ELOG V3.1.4-2e1708b5