> let me explain with an example > say i have a 32 bit exceutable called Installer > > it dynamically links to 4 libraries which are called: > libdbx1, it is dependent on (ROOT)/postgres/arch/$(ARCH)d/lib -lpq (specified in the makefile) > libdbx2, it is also dependent on (ROOT)/postgres/arch/$(ARCH)d/lib -lpq (specified in the makefile) > libdbx3 > libdbx4 > > the above directory (ROOT)/postgres/arch/$(ARCH)d/lib > > has libpq.so which i got by installing the 32 bit Postgres 8.1.5 on fc4 > its sixe is : 116532 > > now i put these 4 libs and the exe in the target mach > and i run the executable Installer > > the traget m/c is FC4 has Postgres 8.1.5 installed which is 64 bit > > so it has libpq.so.4 and libpq.so.4.1 in /usr/lib64/ of that machine. > > rwxrwxrwx 1 root root 12 Nov 16 15:11 libpq.so.4 -> libpq.so.4.1* > -rwxr-xr-x 1 root root 135960 Nov 16 00:30 libpq.so.4.1* > > so when i run the exe it gives me this error: > > | 2006-11-17 13:56:18.085 | 5659:1436573184 | DMF | 0 | ERROR > | error@dmf | DMFConcreteRepositoryCreatorFactory.cxx:77 | > Cannot find library for dbexpress: libpq.so.4: cannot open > shared object file: No such file or directory > | 2006-11-17 13:56:18.085 | 5659:1436573184 | DMF | 0 | ERROR > | error@dmf | DMFConcreteRepositoryCreatorFactory.cxx:122 | > Unknown repository: dbexpress I see. You will need the 32-bit library libpq.so.4 to run your installer executable. You can copy this library to some other place on the machine with the 64-bit libpq.so (I assume it is the database server) and try to make the executable use this library. First, check if the installer executable or libdbx<n> has an RPATH set: objdump -p -j .dynstr <executable>|egrep RUNPATH\|RPATH If yes, and it points to the location of the 64-bit library, you are out of luck and the only solution I can see is to install the server in another directory... If no, or the RPATH points somewhere else, you can use the environment variable LD_LIBRARY_PATH to make the installer executable use the correct libpq.so.4: env LD_LIBRARY_PATH=/location/of/32bit/lib <executable> Yours, Laurenz Albe
