Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx> wrote: > On Wed, Apr 09, 2014 at 05:29:49PM +0200, Florian Westphal wrote: > > Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx> wrote: > > > > > src/scanner.o: In function `nft_realloc': > > > > > /home/nwd/lab/nftables/nftables-20140407/<stdout>:4260: undefined > > > > > reference to `rpl_realloc' > > > > > > > > This happens when configure thinks malloc/realloc are missing. > > > > > > > > Any objetions wrt. removing AC_FUNC_MALLOC/AC_FUNC_REALLOC from > > > > nftables configure.ac? > > > > > > If that resolves the problem, please go ahead, thanks Florian. > > > > The problem is two-fold. When libnftnl has just been installed and > > is not yet in linker path, the malloc/realloc test will fail: > > > > configure:4557: gcc -o conftest -I/usr/local/libnftnl/include > > -L/usr/local/libnftnl/lib conftest.c -lreadline -lgmp -lnftnl -lmnl >&5 > > configure:4557: $? = 0 > > configure:4557: ./conftest > > ./conftest: error while loading shared libraries: libnftnl.so.0: cannot > > open shared object file: No such file or directory > > > > That error is only in config.log, and config.h redefines malloc/realloc > > with rpl_ prefix, which then yields the mysterious > > 'undefined reference to `rpl_realloc'' error when compiling nftables. > > > > The 2nd problem is that the macro executes the built program, which has > > the usual cross-compiling issue. > > > > AFAIU these macros are only useful to check if malloc(0) returns > > non-NULL and that realloc(NULL, .. works, hence the question if these > > should just be removed. > > OK, so if we remove the macros, we may still hit the first problem, > right? No, since no "#define malloc rpl_malloc" will be done nft things will compile/link. You won't be able to run src/nft without fixing ld library path, but at least then you'll get a clear message as to where the problem is :-) > Patrick has some build updates in his queue, not sure if this removal > may clash with his changes. I see, I'll leave it alone then (at least until his changes are in). Thanks for the heads-up. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
