RE: RE: linking to shared objects user libraries

["Mark Rivers" <rivers@cars.uchicago.edu>]

Hi Pierrick,

I think your problem is the path to the library, not static versus
dynamic:

TargetMon_LIBS +=
/home/epics/Software/MICESoftware/MICETrackerSoftware/.lib/libMICECoreUt
ils

make[3]: *** No rule to make target
`../../../lib/linux-x86/lib/home/epics/Software/MICESoftware/MICETracker
Software/.lib/libMICECoreUtils.a', needed by `TargetMon'.  Stop.

Note that you have told it to look in 
/home/epics/Software/MICESoftware/MICETrackerSoftware/.lib/libMICECoreUt
ils

but it is reporting the unfound file as: 
`../../../lib/linux-x86/lib/home/epics/Software/MICESoftware/MICETracker
Software/.lib/libMICECoreUtils.a'

Which is going to be a non-existent path.

I am not sure exactly how to do this, because I have always used
libraries that were either part of the EPICS build or in standard
locations for the linker, like /usr/local/lib.  But I think in your
Makefile you need to specify just the name of the library like:

TargetMon_LIBS += MICECoreUtils

and separately tell it a library path where this file is located.

Mark


From: Pierrick Hanlet [mailto:hanlet@fnal.gov] 
Sent: Friday, July 09, 2010 11:12 AM
To: Mark Rivers
Cc: J. Lewis Muir; tech-talk@aps.anl.gov
Subject: Re: RE: linking to shared objects user libraries

As requested:

------------------------------------------------------------------------
-----------------------------------------
~/iocTops/TargetMon/configure/CONFIG_SITE:
      1 # CONFIG_SITE
      2
      3 # Make any application-specific changes to the EPICS build
      4 # configuration variables in this file.
      5 #
      6 # Host/target specific settings can be specified in files named
      7 #  CONFIG_SITE.$(EPICS_HOST_ARCH).Common
      8 #  CONFIG_SITE.Common.$(T_A)
      9 #  CONFIG_SITE.$(EPICS_HOST_ARCH).$(T_A)
     10
     11 # Set this when you only want to compile this application
     12 # for a subset of the cross-compiled target architectures
     13 # that Base is built for.
     14 #CROSS_COMPILER_TARGET_ARCHS = vxWorks-68040
     15
     16 # Set this when your IOC and the host use different paths
     17 # to access the application. This will be needed to boot
     18 # from a Microsoft FTP server or with some NFS mounts.
     19 # You must rebuild in the iocBoot directory for this to
     20 # take effect.
     21 #IOCS_APPL_TOP = <path to application top as seen by IOC>
     22
     23 # If you don't want to install into $(TOP) then
     24 # define INSTALL_LOCATION here
     25 #INSTALL_LOCATION=<fullpathname>
     26
     27 STATIC_BUILD=NO
     28 SHARED_LIBRARIES=YES




Here's the makefile:
------------------------------------------------------------------------
-----------------------------------------
TOP=../..

include $(TOP)/configure/CONFIG
#----------------------------------------
#  ADD MACRO DEFINITIONS AFTER THIS LINE

#=============================
# Build the IOC application

PROD_IOC = TargetMon

# TargetMon.dbd will be created and installed
DBD += TargetMon.dbd

# TargetMon.dbd will be made up from these files:
TargetMon_DBD += base.dbd
TargetMon_DBD += genSub.dbd
TargetMon_DBD += genSubRecord.dbd
TargetMon_DBD += dbGenSubExtra.dbd

# TargetMon_registerRecordDeviceDriver.cpp derives from TargetMon.dbd
TargetMon_SRCS += TargetMon_registerRecordDeviceDriver.cpp
TargetMon_SRCS += readTgtData.c

# Build the main IOC entry point on workstation OSs.
TargetMon_SRCS_DEFAULT += TargetMonMain.cpp
#TargetMon_SRCS_vxWorks += -nil-

# Add support from base/src/vxWorks if needed
#TargetMon_OBJS_vxWorks += $(EPICS_BASE_BIN)/vxComLibrary

USR_INCLUDES +=
-I/home/epics/Software/MICESoftware/MICETrackerSoftware/BeamLossMonitorU
tils/include

# Link in the code from the support library
TargetMon_LIBS +=
/home/epics/Software/MICESoftware/MICETrackerSoftware/.lib/libMICECoreUt
ils
TargetMon_LIBS +=
/home/epics/Software/MICESoftware/MICETrackerSoftware/.lib/libMICEThread
s
TargetMon_LIBS +=
/home/epics/Software/MICESoftware/MICETrackerSoftware/.lib/libMICELoggin
g
TargetMon_LIBS +=
/home/epics/Software/MICESoftware/MICETrackerSoftware/.lib/libBeamLossHa
rdwareUtils
TargetMon_LIBS += /home/epics/Software/ExtDeps/gzstream/gzstream
z_DIR = /usr/lib
USR_LIBS += z

# Finally link to the EPICS Base libraries
TargetMon_LIBS += $(EPICS_BASE_IOC_LIBS)
TargetMon_LIBS += genSub
TargetMon_LIBS += receive
TargetMon_LIBS += transmit

#=============================

include $(TOP)/configure/RULES
#----------------------------------------
#  ADD RULES AFTER THIS LINE


Here's the end of the compilation results:
------------------------------------------------------------------------
-----------------------------------------
/usr/bin/g++ -c  -D_POSIX_C_SOURCE=199506L -D_POSIX_THREADS
-D_XOPEN_SOURCE=500           -D_X86_  -DUNIX  -D_BSD_SOURCE -Dlinux
-D_REENTRANT   -O3   -Wall      -m32     -g  -I. -I../O.Common -I. -I..
-I../../../include/os/Linux -I../../../include
-I/home/epics/epics/base/include/os/Linux
-I/home/epics/epics/base/include  -I/home/epics/epics/Support/include
-I/home/epics/epics/Support/genSub/include
-I/home/epics/Software/MICESoftware/MICETrackerSoftware/BeamLossMonitorU
tils/include    ../TargetMonMain.cpp
make[3]: *** No rule to make target
`../../../lib/linux-x86/lib/home/epics/Software/MICESoftware/MICETracker
Software/.lib/libMICECoreUtils.a', needed by `TargetMon'.  Stop.
make[3]: Leaving directory
`/home/epics/epics/iocTops/TargetMon/TargetMonApp/src/O.linux-x86'make[2
]: *** [install.linux-x86] Error 2
make[2]: Leaving directory
`/home/epics/epics/iocTops/TargetMon/TargetMonApp/src'
make[1]: *** [src.install] Error 2
make[1]: Leaving directory
`/home/epics/epics/iocTops/TargetMon/TargetMonApp'
make: *** [TargetMonApp.install] Error 2






------------------------------------------------------------------------
-----------------
Pierrick Hanlet
Fermilab, P.O. Box 500, M.S. 122
Batavia, IL 60510
hanlet@fnal.gov
(630)840-5555/8871/6039         office/lab/fax 
http://www-d0.fnal.gov/~hanlet 

"Whether you think you can or think you can't, either way, you are
correct" -- Henry Ford


----- Original Message -----
From: Mark Rivers <rivers@cars.uchicago.edu>
Date: Friday, July 9, 2010 10:03 am
Subject: RE: linking to shared objects user libraries
To: Pierrick Hanlet <hanlet@fnal.gov>, "J. Lewis Muir" <jlmuir@anl.gov>
Cc: tech-talk@aps.anl.gov


> Can you send the Makefile and the exact error message when you build?
> 
> -----Original Message-----
> From: tech-talk-bounces@aps.anl.gov
> [mailto:tech-talk-bounces@aps.anl.gov] On Behalf Of Pierrick Hanlet
> Sent: Friday, July 09, 2010 9:59 AM
> To: J. Lewis Muir
> Cc: tech-talk@aps.anl.gov
> Subject: Re: linking to shared objects user libraries
> 
> 
> Thanks for the quick responses.
> 
> Yes, I did STATIC_BUILD=NO and SHARED_LIBRARIES=YES
> in xxx/configure/CONFIG_SITE.
> 
> Where might these be overwritten?  Also, since I'm using a 
> mixture of static and shared object libraries, will this
> configuration fix me to one type of library or another?
> Pierrick
> 
>
------------------------------------------------------------------------
> -----------------
> Pierrick Hanlet
> Fermilab, P.O. Box 500, M.S. 122
> Batavia, IL 60510
> hanlet@fnal.gov
> (630)840-5555/8871/6039         office/lab/fax 
> http://www-d0.fnal.gov/~hanlet 
> 
> "Whether you think you can or think you can't, either way, you are
> correct" -- Henry Ford
> 
> 
> ----- Original Message -----
> From: "J. Lewis Muir" <jlmuir@anl.gov>
> Date: Friday, July 9, 2010 9:50 am
> Subject: Re: linking to shared objects user libraries
> To: tech-talk@aps.anl.gov
> 
> 
> > On 7/9/10 9:38 AM, Pierrick Hanlet wrote:
> > > 
> > > Hi,
> > > I'm using 3.14.11 on a linux machine. I would like to use several
> > > external (i.e. non-EPICS) .so libraries in my ioc makefile/
However,
> > > the linking appears to default to static libraries. According to
the
> > > applications developers guide, section 4.6.23.7, I should modify
> > > CONFIG_SITE, but this doesn't work.
> > >
> > > What should I do?
> > 
> > Hi, Pierrick.
> > 
> > Did you try setting both STATIC_BUILD=NO and SHARED_LIBRARIES=YES?
> > 
> > Also, check to make sure your IOC's configuration isn't changing
those
> > variables.  If it is, you will need to remove or change them their
> too.
> > 
> > Lewis