[gnutls-help] on finding nettle under /usr/local rather than under /usr (GNU+Linux 64-bit system)

[Nikos Mavrogiannopoulos]

On Thu, May 30, 2013 at 12:39 PM, Marco Maggi <marco.maggi-ipsu at poste.it> wrote:
> Ciao,
>   I am trying to install  Gnutls 3.2.0 on a GNU+Linux 64-bit
> system with  Slackware's Nettle  2.5 installed  under "/usr"
> and my own installation of Nettle 2.7.1 under "/usr/local".
>   I can do:
>    $ ./configure
> the build starts and it seems to find the right Nettle:
>    $ grep nettle config.log
>    configure:8886: checking whether to use nettle
>    configure:9384: checking for libnettle
>    configure:9406: gcc -std=gnu99 -o conftest -g -O2 -L/usr/local/lib conftest.c /usr/local/lib/libnettle.so /usr/local/lib/libhogweed.so -lgmp -Wl,-rpath -Wl,/usr/local/lib >&5
>    configure:9423: checking how to link with libnettle
>    configure:9425: result: /usr/local/lib/libnettle.so /usr/local/lib/libhogweed.so -lgmp -Wl,-rpath -Wl,/usr/local/lib
>    config.status:3259: creating lib/nettle/Makefile
>    ac_cv_libnettle=yes
>    LIBNETTLE='/usr/local/lib/libnettle.so /usr/local/lib/libhogweed.so -lgmp -Wl,-rpath -Wl,/usr/local/lib'
>    LTLIBNETTLE='-L/usr/local/lib -lnettle -L/usr/local/lib -lhogweed -lgmp -R/usr/local/lib'
> but then  "make" will fail  because the old Nettle  does not
> have the needed  functions ("nettle_umac_*", "nettle_ecc_*",
> etc.); and after building fails I see:

Hello,
 Does the linking fails or compilation? If it is the latter a quick
hack is to configure using CFLAGS=-I/usr/local/include

The proper fix is for gnutls to use pkg-config to detect nettle (which
I plan to do on the next release).

regards,
Nikos