On Tue, 18 Feb 2003 16:05:26 -0600
David Drum [EMAIL PROTECTED] wrote:
[FlightGear-Devel readers: this is another installment in my quest
to get FlightGear compiled under Mac OS X. I now have a good lead on
the final link failure, I think. If you have any knowledge of linker
naming conventions, symbol tables, and the like, I would appreciate
your comments. Thanks. P.S. Everything is being built from CVS.]
Previous make's were failing, unable to find gen_leaf or
ssgVtxTable::ssgVtxTable.
Sometime recently the call to gen_leaf was removed from the CVS code.
Instead, three other symbols are now not being found. Here's the final
make command along with output:
david@Cynosure ~/FlightGear/src/main
$ make
g++ -DPKGLIBDIR=\/Users/david/lib/FlightGear\ -g -O2 -D_REENTRANT
-L/Users/david/lib -L/usr/X11R6/lib -o fgfs main.o fg_commands.o fg_init.o
fg_io.o fg_props.o fgfs.o globals.o logger.o options.o splash.o util.o
viewer.o viewmgr.o location.o ../../src/Aircraft/libAircraft.a
../../src/ATC/libATC.a ../../src/Autopilot/libAutopilot.a
../../src/Cockpit/libCockpit.a ../../src/Cockpit/built_in/libBuilt_in.a
../../src/Controls/libControls.a ../../src/FDM/libFlight.a
../../src/FDM/Balloon/libBalloon.a
../../src/FDM/ExternalNet/libExternalNet.a ../../src/FDM/JSBSim/libJSBSim.a
../../src/FDM/YASim/libYASim.a ../../src/FDM/JSBSim/filtersjb/libfiltersjb.a
../../src/FDM/LaRCsim/libLaRCsim.a ../../src/FDM/UIUCModel/libUIUCModel.a
../../src/GUI/libGUI.a ../../src/Input/libInput.a
../../src/Instrumentation/libInstrumentation.a ../../src/Model/libModel.a
../../src/Navaids/libNavaids.a ../../src/Scenery/libScenery.a
../../src/Scripting/libScripting.a ../../src/Sound/libSound.a
../../src/Airports/libAirports.a ../../src/Network/libNetwork.a
../../src/NetworkOLK/libNetworkOLK.a ../../src/Objects/libObjects.a
../../src/Systems/libSystems.a ../../src/Time/libTime.a
../../src/Environment/libEnvironment.a -lsgroute -lsgsky -lsgephem
-lsgtiming -lsgio -lsgscreen -lsgmath -lsgbucket -lsgdebug -lsgmagvar
-lsgmisc -lsgxml -lsgserial -lsgthreads -lplibpu -lplibfnt -lplibjs
-lplibnet -lplibssg -lplibsg -lplibul -lplibpsl -lmk4 -lz -lpthread -lm
-framework GLUT -framework OpenGL -framework Carbon -lobjc -lplibsl -lplibsm
-framework IOKit -framework CoreFoundation -lm ld: warning table of contents
of library: ../../src/FDM/JSBSim/libJSBSim.a not sorted slower link editing
will result (use the ranlib(1) -s option) ld: Undefined symbols:
trTileSize(_TRctx*, long, long, long)
trImageSize(_TRctx*, long, long)
trTileBuffer(_TRctx*, unsigned long, unsigned long, void*)
ssgVtxTable::ssgVtxTable[in-charge](unsigned, ssgVertexArray*,
ssgNormalArray*, ssgTexCoordArray*, ssgColourArray*) make: *** [fgfs] Error
1
I have been using nm to poke around and believe I know what is going on,
even if I don't know how to fix it:
david@Cynosure ~
$ nm -o lib/libsgscreen.a FlightGear/src/GUI/gui_funcs.o | egrep
'trTileSize|trImageSize|trTileBuffer'
lib/libsgscreen.a:tr.o:1564 S _Z10trTileSizeP6_TRctxiii.eh
lib/libsgscreen.a:tr.o:158c S _Z11trImageSizeP6_TRctxii.eh
lib/libsgscreen.a:tr.o:01d4 T __Z10trTileSizeP6_TRctxiii
FlightGear/src/GUI/gui_funcs.o: U __Z10trTileSizeP6_TRctxlll
lib/libsgscreen.a:tr.o:03c8 T __Z11trImageSizeP6_TRctxii
FlightGear/src/GUI/gui_funcs.o: U __Z11trImageSizeP6_TRctxll
lib/libsgscreen.a:tr.o:036c T __Z12trTileBufferP6_TRctxjjPv
FlightGear/src/GUI/gui_funcs.o: U __Z12trTileBufferP6_TRctxmmPv
If you look closely at the T lines and the U lines, you will see that
the symbol names do not match! No wonder the final link fails. I guess
I need some way to get the compiler to generate the same symbol names.
From simgear/screen/tr.h:
extern void trTileSize(TRcontext *tr, GLint width, GLint height, GLint
border);
It looks like GLint is defined as an int when compiling SimGear but is long
when compiling FlightGear.
Bernie
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