Re: MinGW build of 2.6.5: Still having auto-import problems ;-(

[Cedric Gustin <cedric gustin gmail com>]

Toralf Lund wrote:
> I'm now trying to build gtkmm 2.6.5 via g++ set up as cross compiler
> with i386-mingw32 output (now that I've got 2.2.12  to work after
> tweaking a bit - I want to support 2.0 *and* 2.4 APIs.) Unfortunately, I
> get the problem described in
> http://bugzilla.gnome.org/show_bug.cgi?id=309030 - despite the fact that
> 2.6.5 is supposed to contain a fix for that. It seems like the problem
> is that the GTKMM_API will *not* contain "__declspec(dllimport)" because
> that setup is conditial on GLIBMM_DLL, which won't be defined in my
> glibmm setup (version 2.6.1 built in a similar manner.) The problem is
> the following section of glibmmconfig.h:
> 
> // detect common platforms
> #if defined(_WIN32)
> // Win32 compilers have a lot of varation
> #if defined(_MSC_VER)
> #define GLIBMM_MSC
> #define GLIBMM_WIN32
> #define GLIBMM_DLL
> #elif defined(__CYGWIN__)
> #define GLIBMM_CONFIGURE
> #elif defined(__MINGW32__)
> #define GLIBMM_WIN32
> #define GLIBMM_CONFIGURE
> #else
> 
> - notice how GLIBMM_DLL won't be defined in the "MinGW" case. I tried to
> rebuild glibmm after inserting

Defining GLIBMM_DLL (hence __declspec(dllimport/dllexport)) is not
required as all symbols are exported at link time when using the
-Wl,--export-all-symbols option. Now, another important option to use at
link time is -no-undefined (see build_shared/Makefile_build.am_fragment)
and I don't see it in your g++ command line options. As this option is
automatically added to LDFLAGS at configure time when the host is either
 *-mingw32-* or *-cygwin-*, I guess something you did not use the
--host=i686-pc-mingw32 option with configure or there is an error in the
configure.in file.

Anyway, either try again with --host=i686-pc-mingw32 or manually add
-no-undefined to LDFLAGS in glib/glibmm/Makefile.

It if still fails, you should give us the release of gcc that you use (I
don't know if DLL auto-import works for mingw32 with the 4.x releases).

Cedric

> 
> #define GLIBMM_DLL
> 
> at the appropriate spot, but then I got
> 
> i386-mingw32-g++ -shared -nostdlib
> /usr/lib/gcc/i386-mingw32/3.4.6/../../../../i386-mingw32/lib/dllcrt2.o 
> .libs/convert.o .libs/date.o .libs/fileutils.o .libs/iochannel.o
> .libs/markup.o .libs/module.o .libs/optioncontext.o .libs/optionentry.o
> .libs/optiongroup.o .libs/shell.o .libs/spawn.o .libs/thread.o
> .libs/unicode.o .libs/wrap_init.o .libs/value_basictypes.o .libs/class.o
> .libs/containers.o .libs/debug.o .libs/dispatcher.o .libs/error.o
> .libs/exception.o .libs/exceptionhandler.o .libs/init.o
> .libs/interface.o .libs/main.o .libs/miscutils.o .libs/object.o
> .libs/objectbase.o .libs/pattern.o .libs/property.o
> .libs/propertyproxy.o .libs/propertyproxy_base.o .libs/quark.o
> .libs/random.o .libs/signalproxy.o .libs/signalproxy_connectionnode.o
> .libs/streamiochannel.o .libs/stringutils.o .libs/threadpool.o
> .libs/timer.o .libs/timeval.o .libs/ustring.o .libs/utility.o
> .libs/value.o .libs/value_custom.o .libs/wrap.o  -L/usr/i386-mingw32/lib
> /usr/i386-mingw32/lib/libsigc-2.0.dll.a -lgobject-2.0 -lgmodule-2.0
> -lglib-2.0 -lintl -liconv -L/usr/lib/gcc/i386-mingw32/3.4.6
> -L/usr/lib/gcc/i386-mingw32/3.4.6/../../../../i386-mingw32/lib -lstdc++
> -lmingw32 -lgcc -lmoldname -lmingwex -lmsvcrt -luser32 -lkernel32
> -ladvapi32 -lshell32 -lmingw32 -lgcc -lmoldname -lmingwex -lmsvcrt  
> -mms-bitfields -Wl,--export-all-symbols -o .libs/libglibmm-2.4-1.dll
> -Wl,--image-base=0x10000000 -Wl,--out-implib,.libs/libglibmm-2.4.dll.a
> Creating library file: .libs/libglibmm-2.4.dll.a
> .libs/objectbase.o(.text+0x163): In function `ZN4Glib10ObjectBaseD2Ev':
> /usr/src/redhat/BUILD/glibmm-2.6.1/glib/glibmm/objectbase.cc:120:
> 

d reference to `_imp___ZN4Glib6quark_E'
> .libs/objectbase.o(.text+0x211): In function `ZN4Glib10ObjectBaseD1Ev':
> /usr/src/redhat/BUILD/glibmm-2.6.1/glib/glibmm/objectbase.cc:120:
> undefined reference to `_imp___ZN4Glib6quark_E'
> .libs/objectbase.o(.text+0x2ed): In function `ZN4Glib10ObjectBaseD0Ev':
> /usr/src/redhat/BUILD/glibmm-2.6.1/glib/glibmm/objectbase.cc:120:
> undefined reference to `_imp___ZN4Glib6quark_E'
> .libs/objectbase.o(.text+0x3c4): In function
> `ZN4Glib10ObjectBase20_set_current_wrapperEP8_GObject':
> /usr/src/redhat/BUILD/glibmm-2.6.1/glib/glibmm/objectbase.cc:157:
> undefined reference to `_imp___ZN4Glib6quark_E'
> .libs/objectbase.o(.text+0x3e0):/usr/src/redhat/BUILD/glibmm-2.6.1/glib/glibmm/objectbase.cc:159:
> undefined reference to `_imp___ZN4Glib6quark_E'
> .libs/objectbase.o(.text+0x48b):/usr/src/redhat/BUILD/glibmm-2.6.1/glib/glibmm/objectbase.cc:174:
> more undefined references to `_imp___ZN4Glib6quark_E' follow
> .libs/objectbase.o(.text+0x58b): In function
> `ZN4Glib36_gobject_cppinstance_already_deletedEP8_GObject':
> /usr/src/redhat/BUILD/glibmm-2.6.1/glib/glibmm/objectbase.cc:264:
> undefined reference to `_imp___ZN4Glib26quark_cpp_wrapper_deleted_E'
> .libs/wrap.o(.text+0x1b): In function
> `ZNSt6vectorIPFPN4Glib10ObjectBaseEP8_GObjectESaIS6_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS6_S8_EERKS6_':
> 
> /usr/src/redhat/BUILD/glibmm-2.6.1/glib/glibmm/wrap.cc: undefined
> reference to `_imp___ZN4Glib6quark_E'
> .libs/wrap.o(.text+0xa4):/usr/src/redhat/BUILD/glibmm-2.6.1/glib/glibmm/wrap.cc:
> undefined reference to `_imp___ZN4Glib26quark_cpp_wrapper_deleted_E'
> .libs/wrap.o(.text+0xc4):/usr/src/redhat/BUILD/glibmm-2.6.1/glib/glibmm/wrap.cc:
> undefined reference to `_imp___ZN4Glib6quark_E'
> .libs/wrap.o(.text+0x1e7): In function `ZN4Glib18wrap_register_initEv':
> /usr/src/redhat/BUILD/glibmm-2.6.1/glib/glibmm/wrap.cc:88: undefined
> reference to `_imp___ZN4Glib6quark_E'
> .libs/wrap.o(.text+0x2d3):/usr/src/redhat/BUILD/glibmm-2.6.1/glib/glibmm/wrap.cc:90:
> undefined reference to `_imp___ZN4Glib6quark_E'
> .libs/wrap.o(.text+0x2e7):/usr/src/redhat/BUILD/glibmm-2.6.1/glib/glibmm/wrap.cc:91:
> undefined reference to `_imp___ZN4Glib26quark_cpp_wrapper_deleted_E'
> .libs/wrap.o(.text+0x31f): In function
> `ZN4Glib13wrap_registerEmPFPNS_10ObjectBaseEP8_GObjectE':
> /usr/src/redhat/BUILD/glibmm-2.6.1/glib/glibmm/wrap.cc:120: undefined
> reference to `_imp___ZN4Glib6quark_E'
> .libs/wrap.o(.text+0x34e):/usr/src/redhat/BUILD/glibmm-2.6.1/glib/glibmm/wrap.cc:120:
> undefined reference to `_imp___ZN4Glib6quark_E'
> make[5]: *** [libglibmm-2.4.la] Error 1
> 
> At which point I think all I can do is to cry for help...
> 
> - Toralf
> 
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