build: fix wrong jansson prerequisites

Currently there are multiple features that require Jansson support,
but WITH_JANSSON=1 is set only when configuring with
--enable-json-validation.  Therefore a build with
"--disable-json-validation --enable-ovs" fails.

The availability of Jansson (WITH_JANSSON) should only be used:

 - to check if dependent features can be enabled
 - to determine compiler and linker flags in the Makefile
 - in nm-jansson.h to define compatibility functions if needed

Everything else must be controlled by a configure switch.

https://bugzilla.gnome.org/show_bug.cgi?id=790233

4 files changed, 15 insertions, 8 deletions

diff --git a/configure.ac b/configure.ac
index 14227e1aac..c358d48821 100644
--- a/configure.ac
+++ b/configure.ac
@@ -642,6 +642,14 @@ PKG_CHECK_MODULES(UUID, uuid)
 # Teamd control checks
 
 PKG_CHECK_MODULES(JANSSON, [jansson], [have_jansson=yes], [have_jansson=no])
+if test "$have_jansson" = "yes"; then
+	AC_DEFINE(WITH_JANSSON, 1, [Define if JANSSON is enabled])
+else
+	AC_DEFINE(WITH_JANSSON, 0, [Define if JANSSON is enabled])
+fi
+AM_CONDITIONAL(WITH_JANSSON, test "${have_jansson}" = "yes")
+
+
 PKG_CHECK_MODULES(LIBTEAMDCTL, [libteamdctl >= 1.9], [have_teamdctl=yes],[have_teamdctl=no])
 if test "$have_jansson" = "yes" -a "$have_teamdctl" = "yes"; then
 	have_team_prereq=yes
@@ -673,14 +681,13 @@ AC_ARG_ENABLE(json-validation,
               [enable_json_validation=${enableval}],
               [enable_json_validation=${have_jansson}])
 if (test "${enable_json_validation}" == "no"); then
-	AC_DEFINE(WITH_JANSSON, 0, [Define if JANSSON is enabled])
+	AC_DEFINE(WITH_JSON_VALIDATION, 0, [Define if JSON validation in libnm is enabled])
 else
 	if test "$have_jansson" = "no"; then
 		AC_MSG_ERROR([jansson is needed for team configuration validation. Use --disable-json-validation to build without it.])
 	fi
-		AC_DEFINE(WITH_JANSSON, 1, [Define if JANSSON is enabled])
+		AC_DEFINE(WITH_JSON_VALIDATION, 1, [Define if JSON validation in libnm is enabled])
 fi
-AM_CONDITIONAL(WITH_JANSSON, test "${enable_json_validation}" != "no")
 
 # we usually compile with polkit support. --enable-polkit=yes|no only sets the
 # default configuration for main.auth-polkit. User can always enable/disable polkit
diff --git a/libnm-core/nm-utils.c b/libnm-core/nm-utils.c
index 6c8436cc5d..a3c363c52a 100644
--- a/libnm-core/nm-utils.c
+++ b/libnm-core/nm-utils.c
@@ -4304,7 +4304,7 @@ const char **nm_utils_enum_get_values (GType type, gint from, gint to)
 
 /*****************************************************************************/
 
-#if WITH_JANSSON
+#if WITH_JSON_VALIDATION
 /**
  * nm_utils_is_json_object:
  * @str: the JSON string to test
@@ -4715,7 +4715,7 @@ done:
 	return updated;
 }
 
-#else /* WITH_JANSSON */
+#else /* !WITH_JSON_VALIDATION */
 
 gboolean
 nm_utils_is_json_object (const char *str, GError **error)
diff --git a/libnm-core/tests/test-general.c b/libnm-core/tests/test-general.c
index 188cb28e63..9f134583b3 100644
--- a/libnm-core/tests/test-general.c
+++ b/libnm-core/tests/test-general.c
@@ -5848,7 +5848,7 @@ test_nm_utils_check_valid_json (void)
 {
 	_json_config_check_valid (NULL, FALSE);
 	_json_config_check_valid ("", FALSE);
-#if WITH_JANSSON
+#if WITH_JSON_VALIDATION
 	_json_config_check_valid ("{ }", TRUE);
 	_json_config_check_valid ("{ \"a\" : 1 }", TRUE);
 	_json_config_check_valid ("{ \"a\" : }", FALSE);
@@ -5873,7 +5873,7 @@ _team_config_equal_check (const char *conf1,
 static void
 test_nm_utils_team_config_equal (void)
 {
-#if WITH_JANSSON
+#if WITH_JSON_VALIDATION
 	_team_config_equal_check ("", "", TRUE, TRUE);
 	_team_config_equal_check ("{}",
 	                          "{ }",
diff --git a/libnm-core/tests/test-keyfile.c b/libnm-core/tests/test-keyfile.c
index 2dc929afd8..6f3b0e3276 100644
--- a/libnm-core/tests/test-keyfile.c
+++ b/libnm-core/tests/test-keyfile.c
@@ -623,7 +623,7 @@ test_team_conf_read_valid (void)
 static void
 test_team_conf_read_invalid (void)
 {
-#if WITH_JANSSON
+#if WITH_JSON_VALIDATION
 	GKeyFile *keyfile = NULL;
 	gs_unref_object NMConnection *con = NULL;
 	NMSettingTeam *s_team;