How to compile GnuTLS

Question

I\'m trying to compile GnuTLS library several times on Centos 6.2 but with no luck. These are the steps:

I downloaded Nettle 2.4

[root@localhost opt]# wg         


        

Answer 1

Had this problem on Debian for a while, try installing pkgconf package.

Answer 2

Gnu TLS configure script does not say out loud that pkg-config is needed and other package may not even be tried if pkg-config is not installed. Installing pkg-config fixed the issue for me.

Answer 3

configure:8798: checking for libnettle
configure:8820: gcc -std=gnu99 -o conftest -g -O2   conftest.c  /usr/lib/libnettle.so /usr/lib/libhogweed.so -lgmp >&5
/usr/bin/ld: cannot find -lgmp
collect2: ld returned 1 exit status
configure:8820: $? = 1
configure: failed program was:
configure:8830: result: no
configure:8856: error: 
  ***
  *** Libnettle 2.4 was not found.

I install gmp-devel. The problem is fixed.

Answer 4

I installed nettle-dev & nettle-bin and it works :)

Answer 5

Actually the problem was in configure script, incorrectly invoking the pkg-config Looks like its due to the version differences in autogen files. Anyway I fixed it in configure script.

They invoke pkg-config with => operator but libnettle names itelf incorrectly. For example, they invoke $PKG_CONFIG --libs "nettle >= 3.4.1" 2>/dev/null

The fix : so I just removed "=> 3.4.1" substring and voila:

    if test -n "$NETTLE_CFLAGS"; then
    pkg_cv_NETTLE_CFLAGS="$NETTLE_CFLAGS"
 elif test -n "$PKG_CONFIG"; then
    if test -n "$PKG_CONFIG" && \
    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"nettle\""; } >&5
  ($PKG_CONFIG --exists --print-errors "nettle") 2>&5
  ac_status=$?
  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  test $ac_status = 0; }; then
  pkg_cv_NETTLE_CFLAGS=`$PKG_CONFIG --cflags "nettle" 2>/dev/null`
              test "x$?" != "x0" && pkg_failed=yes

its for CFLAGS and down below for LIBS flag:

if test -n "$NETTLE_LIBS"; then
    pkg_cv_NETTLE_LIBS="$NETTLE_LIBS"
 elif test -n "$PKG_CONFIG"; then
    if test -n "$PKG_CONFIG" && \
    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"nettle\""; } >&5
  ($PKG_CONFIG --exists --print-errors "nettle") 2>&5
  ac_status=$?
  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
  test $ac_status = 0; }; then
  pkg_cv_NETTLE_LIBS=`$PKG_CONFIG --libs "nettle" 2>/dev/null`
              test "x$?" != "x0" && pkg_failed=yes
else
  pkg_failed=yes
fi
 else
    pkg_failed=untried
fi

Answer 6

GnuTLS depends on nettle which is missing on your environment.

• You can download the nettle package and install

cd nettle-xxx
./configure 
make 
sudo make install

• Or if it is ubuntu system you can install from apt

sudo apt install nettle-dev nettle-bin