Re: Berkeley DB cannot be found on Ubuntu

[Oswald B. <osw...@gm...>]

On Mon, Jul 13, 2015 at 11:27:09PM +0000, daniel szmulewicz wrote:
> The config.log reveals:
> 
> configure:4723: checking for Berkeley DB >= 4.1
> configure:4745: gcc -o conftest -g -O2 -pipe -W -Wall -Wshadow
> -Wstrict-prototypes -ansi -pedantic -Wno-overlength-strings  -D_GNU_SOURCE
>      -ldb conftest.c  >&5
> conftest.c:34:1: warning: function declaration isn't a prototype
> [-Wstrict-prototypes]
>  main ()
>  ^
> /tmp/ccaGDsAw.o: In function `main':
> /home/daniel/isync-isync/conftest.c:37: undefined reference to `db_create'
> collect2: error: ld returned 1 exit status
> 
> So the linker cannot find the required function. Interesting.
> 
> If I had to guess, which I really shouldn't because I'm not a C programmer
> at all, the problem is that recent versions of gcc require that you put the
> object files and libraries in the order that they depend on each other. In
> other words, conftest.c should be before -ldb. This is actually consistent
> from what I observe elsewhere in the log, for example conftest.c precedes
> -lsasl2, etc.
> 
what happens if you use that command line with switched argument order
to compile the test program manually? that's a rather easy test for your
hypothesis.

what does

  nm -D <whereever your libdb.so is> | grep db_create

produce?