[omniORB] shared libraries on Linux/egcs

[Sai-Lai Lo]

>>>>> Kasper Peeters writes:

> With egcs 1.0.3, shared libraries with exceptions should work
> fine on Linux (at least I didn't experience any problems so far).
> Are there any patches to enable building omniORB with shared
> libraries for this platform? 

Yes, I've received several report that it is now possible to build shared
libraries with egcs. I haven't tested this myself. If there is any problem
it is most likely to be in throwing exceptions in shared library. You
should also aware that egcs-1.0.3 does not have thread safe exception
handling but mostly work on x86 linux. If you are using other platforms,
wait for egcs-1.1 or try the egcs development snapshot.

Christopher Wood sent me this change to build shared library with egcs, you
may want to try this out.

Sai-Lai


------------------------ cut here --------------------------------

>From: CHRISTOPHER WOOD <chrisw@cs.uwa.edu.au>
>Subject: Re: [omniORB] Updated bug list
>To: Sai-Lai Lo <S.Lo@orl.co.uk>
>Date: Tue, 11 Aug 1998 15:37:04 +0800 (WST)
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>On Mon, 10 Aug 1998, Sai-Lai Lo wrote:

In addition to my previous message i've found it's possible to compile
shared libaries under egcs-1.0.3 (instead of the default which is static
libaries only). 

i don't have a diff but here are the extra lines i added to
src/lib/omniORB2/shared. Almost identical to the solaris rules with a few
minor changes. 


#############################################################################
#   Make rules for Linux egcs
#
#############################################################################

ifdef Linux

DIR_CPPFLAGS += -fPIC

libname = libomniORB$(major_version).so
soname  = $(libname).$(minor_version)
lib = $(soname).$(micro_version)

lclibname = libomniLC.so
lcsoname  = $(lclibname).$(lc_minor_version)
lclib = $(lcsoname).$(lc_micro_version)

all:: $(lib)

all:: $(lclib)

$(lib): $(ORB2_OBJS)
        (set -x; \
        $(RM) $@; \
        $(CXX) -shared -Wl,-soname,$(soname) -o $@ $(IMPORT_LIBRARY_FLAGS)
\
         $(filter-out $(LibSuffixPattern),$^) $(OMNITHREAD_LIB); \
       )

$(lclib): $(LC_OBJS)
        (set -x; \
        $(RM) $@; \
        $(CXX) -shared -Wl,-soname,$(lcsoname) -o $@
$(IMPORT_LIBRARY_FLAGS) \
         $(filter-out $(LibSuffixPattern),$(LC_OBJS)) \
         $(OMNITHREAD_LIB) $(lib); \
       )


clean::
        $(RM) $(lib) $(lclib)

export:: $(lib)
        @$(ExportLibrary)
        @(set -x; \
          cd $(EXPORT_TREE)/$(LIBDIR); \
          $(RM) $(soname); \
          ln -s $(lib) $(soname); \
          $(RM) $(libname); \
          ln -s $(soname) $(libname); \
         )

export:: $(lclib)
        @$(ExportLibrary)
        @(set -x; \
          cd $(EXPORT_TREE)/$(LIBDIR); \
          $(RM) $(lcsoname); \
          ln -s $(lclib) $(lcsoname); \
          $(RM) $(lclibname); \
          ln -s $(lcsoname) $(lclibname); \
         )

endif



-- 
Dr. Sai-Lai Lo                          |       Research Scientist
                                        |
E-mail:         S.Lo@orl.co.uk          |       Olivetti & Oracle Research Lab
                                        |       24a Trumpington Street
Tel:            +44 223 343000          |       Cambridge CB2 1QA
Fax:            +44 223 313542          |       ENGLAND