Alex Romosan wrote:
Curtis L. Olson [EMAIL PROTECTED] writes:
What compiler are you using. This looks a bit strange. Most often,
ifyou link against a library, it only pulls in the required routines
from that library and ignores everything else. But in this case it
almost looks like your linker is requiring all symbols in the
libsgenvironment.a to get resolved, even if they are part of functions
that aren't referenced or used. The sgi compilers have this tendency,
but gcc is usually very smart about this. The quick fix would be to add
the additional libs ... -lsgmath -lplibsg -lGL, etc.
But it would be interesting to know which compiler you are using to see
if it makes sense that it should squawk about this or not ...
Regards,
Curt.
Brian Thomason wrote:
I'm attempting to compile FlightGear 0.9.9 on Linspire 5.0.
Compiling simgear 0.9.9 went fine, but FlightGear fails with the
following error:
/
g++ -DPKGLIBDIR=\/usr/share/games/FlightGear\ -g -O2 -D_REENTRANT
-L/usr/X11R6/lib -L/usr/lib -o metar metar_main.o -lsgenvironment
-lsgio -lsgbucket -lsgmisc -lsgstructure -lsgdebug -lsgprops
-lsgserial -lsgxml -lplibnet -lplibul -lz -ldl -lm -ljpeg
/usr/lib/libsgenvironment.so: undefined reference to
`ssgContext::loadModelviewMatrix(float (*) [4])'
/usr/lib/libsgenvironment.so: undefined reference to `glRotatef'
/usr/lib/libsgenvironment.so: undefined reference to
`sgMakeRotMat4(float (*) [4], float, float const*)'
/usr/lib/libsgenvironment.so: undefined reference to `sg_random'
/usr/lib/libsgenvironment.so: undefined reference to `glVertex3f'
/usr/lib/libsgenvironment.so: undefined reference to
`calc_gc_lon_lat(Point3D const, double, double)'
/usr/lib/libsgenvironment.so: undefined reference to
`SGCloudField::CloudVis'
/usr/lib/libsgenvironment.so: undefined reference to
`SGSoundSample::set_source_pos(float*)'
/usr/lib/libsgenvironment.so: undefined reference to
`sgMakeCoordMat4(float (*) [4], float, float, float, float, float,
float)'
/usr/lib/libsgenvironment.so: undefined reference to
`SGBbCache::startNewFrame()'
/usr/lib/libsgenvironment.so: undefined reference to
`SGCloudField::get_CacheSize()'
/usr/lib/libsgenvironment.so: undefined reference to `glDisable'
/usr/lib/libsgenvironment.so: undefined reference to `glDepthMask'
/usr/lib/libsgenvironment.so: undefined reference to `glBegin'
/usr/lib/libsgenvironment.so: undefined reference to
he is linking against shared libraries. i see the same thing (having
modified my build environment a long time ago to build shared
libraries) but in my case i just modified the Makefiles and added the
extra libraries needed.
and, yes, there are a lot of interdependencies (including circular
ones) between the simgear libraries that don't show up in the current
makefiles.
Ahh, ok, I missed seeing the .so's
I realize that some people really love shared libraries, but in the case
of flightgear/simgear, who are you sharing them with. It makes the
binary a bit smaller, but you don't have a zillion apps all linking
against the same libraries like you do with X or kde or gnome.
If you have a choice, I'd recommend building simgear as static libraries
and rolling it all into the executable.
Curt.
--
Curtis Olsonhttp://www.flightgear.org/~curt
HumanFIRST Program http://www.humanfirst.umn.edu/
FlightGear Project http://www.flightgear.org
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