Re: Fwd: Re: Fwd: cross-compiling (kind of) with Buildroot

["Hill, Bruce via Tech-talk" <tech-talk@aps.anl.gov>]

Hi Pierre,
The only mistake I see is the filename should be CONFIG_SITE.Common.linux-686
instead of SITE_CONFIG.Common.linux-686.

However, on closer look I see that works here at SLAC as we've added these lines
at the end of streamdevice $(TOP)/configure/CONFIG:

# CONFIG_SITE files contain other build configuration settings
include $(TOP)/configure/CONFIG_SITE
-include $(TOP)/configure/CONFIG_SITE.$(EPICS_HOST_ARCH).Common
ifdef T_A
 -include $(TOP)/configure/CONFIG_SITE.Common.$(T_A)
 -include $(TOP)/configure/CONFIG_SITE.$(EPICS_HOST_ARCH).$(T_A)
endif

While the above pattern is typical for EPICS and used in many modules, I see
the streamdevice master branch from github doesn't follow that convention.
Instead, the configure/RELEASE file includes $(TOP)/configure/RELEASE.local
along w/ support for getting your configuration from SUPPORT files at $(TOP)/..
which is also an option, but setting up SUPPORT is a bit more complicated.

So, please try creating a configure/RELEASE.local file if not found, and make
sure it contains:

PCRE_LIB=/usr/local/products/elsd/conc405x/linux-3.16.7_generic/output/staging/usr/lib
PCRE_INCLUDE=/usr/local/products/elsd/conc405x/linux-3.16.7_generic/output/staging/usr/include

LIB_INSTALL += $(wildcard $(PCRE_LIB)/lib*)

If this doesn't work, please run "make -d" and send us the entire output as an attachment.
Also include a diff output w/ all changes you've made to configure/C* and configure/R*.

Cheers,
- Bruce

On 9/9/19 12:59 PM, Pierrick M Hanlet wrote:

Hi Bruce,
Thanks for the feedback.  I did attempt putting these modifications
by adding SITE_CONFIG.Common.linux-686 and pointing to it from
CONFIG in the StreamDevice/configure files and also by modifying
the file in base/configuration/os.  Unfortunately neither of these worked
for me.  As you can see, the correct library doesn't show up in the
linking phase:

/usr/local/products/elsd/conc405x/linux-3.16.7_generic/output/host/usr/bin/i686-buildroot-linux-uclibc-g++ -o streamApp  -L/scratch/home/hanlet/platforms/conc405x/epicsDEV/Support/StreamDevice-2-8/lib/linux-686 -L/scratch/home/hanlet/platforms/conc405x/epicsDEV/Support/asyn4-35/lib/linux-686 -L/scratch/home/hanlet/platforms/conc405x/epicsDEV/Support/calc-R3-7-1/lib/linux-686 -L/scratch/home/hanlet/platforms/conc405x/epicsDEV/Support/sscan-2-11-2/lib/linux-686 -L/scratch/home/hanlet/platforms/conc405x/epicsDEV/base-3.14.12.8/lib/linux-686 -Wl,-rpath,/scratch/home/hanlet/platforms/conc405x/epicsDEV/Support/StreamDevice-2-8/lib/linux-686 -Wl,-rpath,/scratch/home/hanlet/platforms/conc405x/epicsDEV/Support/asyn4-35/lib/linux-686 -Wl,-rpath,/scratch/home/hanlet/platforms/conc405x/epicsDEV/Support/calc-R3-7-1/lib/linux-686 -Wl,-rpath,/scratch/home/hanlet/platforms/conc405x/epicsDEV/Support/sscan-2-11-2/lib/linux-686 -Wl,-rpath,/scratch/home/hanlet/platforms/conc405x/epicsDEV/base-3.14.12.8/lib/linux-686        -m32    -L/usr/local/products/elsd/conc405x/linux-3.16.7_generic/output/host/usr/i686-buildroot-linux-uclibc/lib            streamApp_registerRecordDeviceDriver.o streamAppMain.o   -lstream -lasyn -lcalc -lsscan -lrecIoc -lsoftDevIoc -lmiscIoc -lrsrvIoc -ldbtoolsIoc -lasIoc -ldbIoc -lregistryIoc -ldbStaticIoc -lca -lCom  -lpcre
/scratch/products/elsd/conc405x/linux-3.16.7_generic/output/host/usr/bin/../lib/gcc/i686-buildroot-linux-uclibc/4.8.3/../../../../i686-buildroot-linux-uclibc/bin/ld: cannot find -lpcre
collect2: error: ld returned 1 exit status
make[2]: *** [streamApp] Error 1
make[2]: Leaving directory `/scratch/home/hanlet/platforms/conc405x/epicsDEV/Support/StreamDevice-2-8/streamApp/O.linux-686'
make[1]: *** [install.linux-686] Error 2
make[1]: Leaving directory `/scratch/home/hanlet/platforms/conc405x/epicsDEV/Support/StreamDevice-2-8/streamApp'
make: *** [streamApp.install] Error 2

Of course, I may have not been following your suggestions sufficiently accurately so
please feel free to correct me.
Thank you,
Pierrick

On 8/14/19 5:58 PM, Hill, Bruce via Tech-talk wrote:

Try this in your configure/CONFIG_SITE.Common.linux-686 file:

PCRE_LIB=/usr/local/products/elsd/conc405x/linux-3.16.7_generic/output/staging/usr/lib
PCRE_INCLUDE=/usr/local/products/elsd/conc405x/linux-3.16.7_generic/output/staging/usr/include

It'll also help to add this line:
LIB_INSTALL += $(wildcard $(PCRE_LIB)/lib*)

This last line will install all the pcre libs in your streamdevice lib/linux-686 dir
which will allow your IOC's to link w/o needing to also define PCRE_LIB.

Cheers,
- Bruce

On 8/12/19 8:08 AM, Pierrick M Hanlet via Tech-talk wrote:

I've attempted to fix it by creating a RELEASE.Common.linux-686 file with:
PCRE_TARGET_LIB=/usr/local/products/elsd/conc405x/linux-3.16.7_generic/output/staging/usr/lib
PCRE_TARGET_INCLUDE=/usr/local/products/elsd/conc405x/linux-3.16.7_generic/output/staging/usr/include

-- 
Bruce Hill
Member Technical Staff
SLAC National Accelerator Lab
2575 Sand Hill Road M/S 10
Menlo Park, CA  94025

-- 
Pierrick Hanlet
Fermi National Accelerator
Accelerator Front End Controls
+1-630-840-5555 -- lab
+1-312-687-4980 -- mobile

"Whether you think you can or think you can't, you're right" -- Henry Ford

-- 
Bruce Hill
Member Technical Staff
SLAC National Accelerator Lab
2575 Sand Hill Road M/S 10
Menlo Park, CA  94025