Hmmm, have to be careful here. The list of libraries to link in will vary with the application config. For example, Andy, if you added a video codec to your application config, you'd need to add video.a470MV. If you enabled debug libraries, you'd have to switch most of the libraries in the list. Also, if you had a codec which supported "local" execution (on the ARM), the list of libraries would change when your app configured "local:true" vs. "local:false". For exactly all these reasons, we _autogenerate_ the list of files to link with as an output to the config step(!). We're working on the XDC tools to make this easier in future releases of the tooling, but for now you can refer to the comments in examples/apps/video_copy/dualcpu/makefile (interesting stuff copied here): # [CE] define EXAMPLES_ROOTDIR to point to root of <CE/examples> directory EXAMPLES_ROOTDIR := $(CURDIR)/../../..
# [CE] include the file that defines paths to XDC packages and XDC tools include $(EXAMPLES_ROOTDIR)/xdcpaths.mak # [CE] add the examples directory itself to the list of paths to packages XDC_PATH := $(EXAMPLES_ROOTDIR);$(XDC_PATH) # [CE] include the makefile that rus XDC configuration step for our # program configuration script. # # Input: # XDC_CFGFILE: location of the program configuration script (if in different # directory, include the relative path to the file) # Implicit input: XDC_ROOT and XDC_PATH defined by the xdcpaths.mak above # # Output: # XDC_FLAGS: additional compiler flags that must be added to existing # CFLAGS or CPPFLAGS # XDC_CFILE: name of the XDC-generated C file; usually does not need to be # used explicitly, the existing .c->.o rules will take care of it # XDC_OFILE: name of object file produced by compiling XDC-generated C file; # must be linked with the user's application # XDC_LFILE: list of Codec Engine libraries that must be supplied to the # linker (usually as `cat $(XDC_LFILE)`) # Implicit output: rule that generates .c file from the program configuration # script (XDC_CFGFILE); rule to generate dummy package one dir. # level below the script; rule that cleans generated files XDC_CFGFILE = ./ceapp.cfg include $(EXAMPLES_ROOTDIR)/buildutils/xdccfg_linuxarm.mak As described above, the config step generates several files which your build environment will utilize. Namely: 1. An autogenerated 'C' source file - all packages can interrogate the configuration and generate tables, variables, etc into the XDC_CFILE which the application must compile and link into it. 2. An autogenerated 'XDC_LFILE' linker command file (.xdl extension) - all packages can contribute to the application's executable with libraries by implementing a 'getLibs()' function in their package.xs script. 3. A list of flags to add to your application's build - XDC_FLAGS. Looking back at the original post by Subhash, it's clear that the auto-generated XDC_CFILE is not being compiled/linked into the application - XDC_CFILE contains the 'Engine_config' and 'GT' symbols, among _many_ others. Some related discussion here: http://www.mail-archive.com/[EMAIL PROTECTED] om/msg01380.html Chris ________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Andy Ngo Sent: Tuesday, March 13, 2007 1:03 PM To: Subhash; davinci-linux-open-source@linux.davincidsp.com Subject: Re: Sementation fault Make sure you link in the necessary CE libraries with your ARM application. This is what I had to link in with my ARM application: export CE_DIR = /opt/dvevm_1_10/codec_engine_1_02/packages export DSPLINK_DIR= /opt/dvevm_1_10/dsplink_1_30_08_02/packages export CMEM_DIR = /opt/dvevm_1_10/cmem_1_01/packages EXTRA_LIBS = $(CE_DIR)/ti/sdo/ce/speech/lib/speech.a470MV \ $(CE_DIR)/ti/sdo/ce/lib/ce.a470MV \ $(CE_DIR)/ti/sdo/ce/node/lib/node.a470MV \ $(CE_DIR)/ti/sdo/ce/utils/trace/lib/TraceUtil.a470MV \ $(CE_DIR)/ti/sdo/ce/bioslog/lib/bioslog.a470MV \ $(CE_DIR)/ti/sdo/ce/osal/lib/osal_dsplink_linux.a470MV \ $(DSPLINK_DIR)/dsplink/gpp/export/BIN/Linux/Davinci/RELEASE/dsplink.lib \ $(CMEM_DIR)/ti/sdo/linuxutils/cmem/lib/cmem.a \ $(CE_DIR)/ti/sdo/ce/osal/alg/lib/alg.a470MV \ $(CE_DIR)/ti/sdo/ce/trace/lib/gt.a470MV myapp.out : $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJ) $(LIBS) $(EXTRA_LIBS) Regards, Andy ----- Original Message ---- From: Subhash <[EMAIL PROTECTED]> To: davinci-linux-open-source@linux.davincidsp.com Sent: Tuesday, March 13, 2007 2:52:07 AM Subject: Sementation fault Hi All, I am developing application on Davinci. I try to use codec engine APIs, and I face few problems after integrating Codec engine in my application. I have listed down the problems below 1. In my application first i called CERuntime_init function. When I call Engine_open API it gives errors undefined reference to `Engine_config" and undefined reference to `GT" 2. So i declared above variables in my application to remove these erros(i think its not the right way) and build the application successfully.3.And when I run the application I got a Segmentation Fault in Engine_open. I have linked all codec related libraries properly. You can also refer the request posted by someone at the link http://linux.omap.com/pipermail/davinci-linux-open-source/2006-September /000895.html , same problem I am facing here. Even though I called CERuntime_init then also I am getting this error. Error mesg: Program received signal SIGSEGV, Segmentation fault.0x0002c6b4 in Engine_open (name=0x2e7b4 "videnc", attrs=0xbefffb24, ec=0xbefffb20) at Engine.c:544.Please can any one help me on this. Regards, Subhash B Karigar Technical Lead Adamya Computing Technologies Pvt.Ltd, # 37, Cheeranjivi Layout, Near Vidyaniketan School, Kempapura, Hebbal, Bangalore - 560 024 Phone: +91(80) 2363 5744, 23635745 Mob: +91 984 551 5696 "Nothing is Impossible, as Impossible itself says I M Possible" I am A Slow Walker But I never walk Back --Abrahim Linkon URL: www.adamya.com <http://www.adamya.com/> Adamya is among the Top Twenty Bluetooth Sites. www.topsitelists.com/bestsites/bluetooth/topsitestopsites.cgi?ID=59 ======================================================================== ==== ==================== Information transmitted by this E-MAIL is proprietary to ADAMYA and is intended for use only by the individual or entity to which it is addressed, and may contain information that is privileged, confidential or exempt from disclosure under applicable law. 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