[PATCH v2] configure: Fix libnfs cflags and libs

[Damien Le Moal <dlemoal@kernel.org>]

libnfs version 16 requires the gnutls library. Without specifying at
least -lgnutls, builds fail:

  LINK fio
/usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/15/../../../../lib64/libnfs.so: undefined reference to `gnutls_certificate_set_x509_trust_dir'
/usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/15/../../../../lib64/libnfs.so: undefined reference to `gnutls_transport_set_int2'
...

Modify the configure script to add cflags and library options for gnutls
to correctly build libnfs engine.

Also make sure that the CI install the gnutls library header files.

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
---
Changes from v1:
 * Modified CI install action as suggested by Vincent

 ci/actions-install.sh | 2 ++
 configure             | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/ci/actions-install.sh b/ci/actions-install.sh
index ad352317..30b815f3 100755
--- a/ci/actions-install.sh
+++ b/ci/actions-install.sh
@@ -32,6 +32,7 @@ DPKGCFG
         libcunit1-dev
         libcurl4-openssl-dev
         libfl-dev
+	libgnutls28-dev
         libnuma-dev
 	libnfs-dev
         valgrind
@@ -106,6 +107,7 @@ install_fedora() {
         bison-devel
         git
         flex-devel
+	gnutls-devel
         gperftools
         isa-l-devel
         kernel-devel
diff --git a/configure b/configure
index 715f0602..986eb0a6 100755
--- a/configure
+++ b/configure
@@ -2361,8 +2361,8 @@ print_config "DAOS File System (dfs) Engine" "$dfs"
 if test "$libnfs" != "no" ; then
   if $(pkg-config libnfs > /dev/null 2>&1); then
     libnfs="yes"
-    libnfs_cflags=$(pkg-config --cflags libnfs)
-    libnfs_libs=$(pkg-config --libs libnfs)
+    libnfs_cflags=$(pkg-config --cflags libnfs gnutls)
+    libnfs_libs=$(pkg-config --libs libnfs gnutls)
   else
     if test "$libnfs" = "yes" ; then
       feature_not_found "libnfs" "libnfs"
-- 
2.49.0