[FWTools] Probably did something stupid...

Mike Toothaker mtoothaker at milcord.com
Wed Jul 25 15:45:34 EDT 2007

Thanks for your quick response, but for some reason I don't seem to be 
able to get the LD_LIBRARY_PATH thing to work.  I am using bash on 
Fedora 7,  g++ v4.1.1, FWTools-linux-1.3.4.tar.gz.

Here is my make file:

CC = g++
CMBN = cmilcordbn
SMILE = /root/Desktop/smile
FWLIB = /root/FWTools/lib
FWINC = /root/FWTools/include

test: milcordbn.o milcordsmilebn.o test.o
    $(CC) -o test -L$(FWLIB) test.o \
    milcordsmilebn.o milcordbn.o \
    $(SMILE)/libsmilearn.a $(SMILE)/libsmilexml.a $(SMILE)/libsmile.a

test.o: test.cpp
    $(CC) -c test.cpp -I$(CMBN) -I$(SMILE) -o test.o

milcordsmilebn.o: $(CMBN)/MilcordSmileBN.cpp $(CMBN)/MilcordSmileBN.cpp 
    $(CC) -c $(CMBN)/MilcordSmileBN.cpp -I$(SMILE) -I$(CMBN) -o 

milcordbn.o: $(CMBN)/MilcordBN.cpp $(CMBN)/MilcordBN.h
    $(CC) -c $(CMBN)/MilcordBN.cpp -o milcordbn.o

    rm -rf *.o
    rm -f test

Here is a smathering of the errors I get:

/root/Desktop/smile/libsmilearn.a(dataset.o): In function 
r, std::char_traits<char>, std::allocator<char> >, int, 
std::less<std::basic_string<char, std::cha
r_traits<char>, std::allocator<char> > >, 
std::allocator<std::pair<std::basic_string<char, std::ch
ar_traits<char>, std::allocator<char> > const, int> > >&, char const*)':
dataset.cxx:(.text+0x912): undefined reference to 
`std::basic_string<char, std::char_traits<char>,
 std::allocator<char> >::_Rep::_S_empty_rep_storage'
dataset.cxx:(.text+0x954): undefined reference to 
`__gnu_cxx::__exchange_and_add(int volatile*, in
dataset.cxx:(.text+0x97d): undefined reference to 
`__gnu_cxx::__exchange_and_add(int volatile*, in

I know that the errors do not refer to gdal or any of the FWTools 
libraries, etc. so you might say "Well it is something wrong with smile, 
not a problem with FWTools..." But here is the kicker, if I take out the 
-L$(FWLIB) then it compiles and runs fine.  I can also do something 
similar where I have code that uses FWTools and not smile and it works 
fine.  What I don't understand is what I am doing wrong that these two 
libraries can't play well together.

Something else that was suggested to me was that maybe it was a problem 
with there being libraries with the same names in the FWTools/lib folder 
and the /usr/lib folder, could this be the problem?  If so how do I go 
about fixing that?

Thanks again for any help you can give.  I have not spent much time 
compiling on Linux, and I have been trying this for 2 days and I don't 
have much hair left.


Frank Warmerdam wrote:
> Mike Toothaker wrote:
>> This is the Makefile for both which will not compile.  The problem 
>> seems to be connected to the “–Wl,-rpath,$(FWLIB)” part, and the 
>> error lines seem to indicate that it is trying to find the libraries 
>> for smile even though it cannot.  So my question is maybe it is 
>> because I am trying to mix shared and static libraries as the smile 
>> libraries are .a and the libraries for FWTools are .so, is it 
>> possible to get statically built copies of the FWTools libraries?  Is 
>> there some way that I can have it link in the static libraries for 
>> smile and use the shared ones for FWTools at run time?  If I leave 
>> off the –Wl stuff then I get errors that it has unreferenced function 
>> calls for my gdal functions.
> ...
>> test: milcordsmilebn.o milcordbn.o test.cpp
>>             $(CC) -o test.exe test.cpp milcordsmilebn.o milcordbn.o \
>>             -L$(SMILE) -I$(SMILE) -I$(CMBN) -lsmilearn -lsmilexml 
>> -lsmile \
>>             -L$(FWLIB) -I$(CMDB) -I$(FWINC) -lgdal -Wl,-rpath,$(FWLIB)
> Mike,
> I'm a bit fuzzy on the -Wl,-rpath flag.  Why do you need this for 
> FWTools?
> Can't you just add the FWLIB directory to LD_LIBRARY_PATH?
> There is no option to get the static libraries for FWTools.
> Best regards,

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