Experimental Physics and
Industrial Control System

"J. Lewis Muir" <[email protected]> · Mon, 08 Sep 2014 12:54:00 -0500

On 9/5/14, 5:33 PM, Andrew Johnson wrote:
> On 09/05/2014 05:30 PM, J. Lewis Muir wrote:
>> On 9/5/14, 5:06 PM, Andrew Johnson wrote:
>>> Running that symbol through c++filt on a Mac gives the following
>>> unmangled name:
>>>
>>> woz$ c++filt __ZNSs4_Rep20_S_empty_rep_storageE
>>> std::string::_Rep::_S_empty_rep_storage
>>>
>>> Doing a web search on that implies that you need to link against
>>> libstdc++, so try adding this to the Makefile that builds
>>> simDetectorApp:
>>>     OP_SYS_LDLIBS += -lstdc++
>>
>> Hi, Andrew.
>>
>> Thanks for the suggestion.  Unfortunately, no dice; it still aborts.
>
> Did you see the -lstdc++ option on the command-line that generated the
> IOC? I may have the wrong Makefile variable if not. If you did, it may
> be some other library that needs the flag.

Hi, Andrew.

I investigated more, and I think the problem is that the libPvAPI.a
static archive included in areaDetector 1.9.1 was built against
stdlibc++ (i.e. GNU's C++ standard library) while Mac OS X Mavericks
(10.9) and Xcode 5 build against libc++ (i.e. LLVM's C++ standard
library) by default.  The two implementations of the C++ standard
library are not binary compatible.

So, my options are to (1) hack areaDetector to not link with the PvAPI
library and avoid using the color converter plug-in and prosilica
driver, (2) get a new libPvAPI.a that is built against libc++, or (3)
build all of EPICS Base, areaDetector, etc. against stdlibc++ instead of
the default libc++.

Since I don't need the color converter plug-in nor the prosilica driver
right now, I've done (1).  I'm doubtful that a new libPvAPI.a exists to
do (2), but if it does, that would hopefully be easy to drop in.  To do
(3), I'd have to add the flag "-stdlib=libstdc++" to the compile and
link flags in the appropriate EPICS Base configure files for Darwin.

Regards,

Lewis

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System