Require CMocka >= 1.1.3 to run the unit tests

In CMocka versions << 1.1.3, the skip() function would cause the whole
unit test to abort when CMOCKA_TEST_ABORT is set.  As this is problem
only in Debian 9 Stretch and Ubuntu 16.04 Xenial, we just require the
CMocka >= 1.1.3 and disable the unit testing on Debian 9 Stretch until
we can pull the libcmocka-dev from stretch-backports and remove the
Ubuntu 16.04 Xenial from the CI as it is reaching End of Standard
Support at the end of April 2021.

.gitlab-ci.yml

@@ -143,10 +143,6 @@ stages:
 
 # Ubuntu
 
-.ubuntu-xenial-amd64: &ubuntu_xenial_amd64_image
-  image: "$CI_REGISTRY_IMAGE:ubuntu-xenial-amd64"
-  <<: *linux_amd64
-
 .ubuntu-focal-amd64: &ubuntu_focal_amd64_image
   image: "$CI_REGISTRY_IMAGE:ubuntu-focal-amd64"
   <<: *linux_amd64
@@ -644,6 +640,7 @@ gcc:stretch:amd64:
   variables:
     CC: gcc
     CFLAGS: "${CFLAGS_COMMON} -O2"
+    EXTRA_CONFIGURE: "--without-cmocka"
   <<: *debian_stretch_amd64_image
   <<: *build_job
 
@@ -842,30 +839,6 @@ unit:gcc:tumbleweed:amd64:
     - job: gcc:tumbleweed:amd64
       artifacts: true
 
-# Jobs for regular GCC builds on Ubuntu 16.04 Xenial Xerus (amd64)
-
-gcc:xenial:amd64:
-  variables:
-    CC: gcc
-    CFLAGS: "${CFLAGS_COMMON} -O2"
-    EXTRA_CONFIGURE: "--disable-geoip"
-  <<: *ubuntu_xenial_amd64_image
-  <<: *build_job
-
-system:gcc:xenial:amd64:
-  <<: *ubuntu_xenial_amd64_image
-  <<: *system_test_job
-  needs:
-    - job: gcc:xenial:amd64
-      artifacts: true
-
-unit:gcc:xenial:amd64:
-  <<: *ubuntu_xenial_amd64_image
-  <<: *unit_test_job
-  needs:
-    - job: gcc:xenial:amd64
-      artifacts: true
-
 # Jobs for regular GCC builds on Ubuntu 20.04 Focal Fossa (amd64)
 
 gcc:focal:amd64:

configure.ac

@@ -1350,10 +1350,10 @@ AC_ARG_WITH([cmocka],
 
 AS_CASE([$with_cmocka],
 	[no],[],
-	[detect],[PKG_CHECK_MODULES([CMOCKA], [cmocka >= 1.0.0],
+	[detect],[PKG_CHECK_MODULES([CMOCKA], [cmocka >= 1.1.3],
 				    [AC_DEFINE([HAVE_CMOCKA], [1], [Use CMocka])
 				     with_cmocka=yes],[with_cmocka=no])],
-	[yes],[PKG_CHECK_MODULES([CMOCKA], [cmocka >= 1.0.0],
+	[yes],[PKG_CHECK_MODULES([CMOCKA], [cmocka >= 1.1.3],
 				 [AC_DEFINE([HAVE_CMOCKA], [1], [Use CMocka])])],
 	[AC_MSG_ERROR([Use PKG_CONFIG_PATH to specify path to CMocka library])]
        )