Build failed with "--disable-zypp"

[henrich]

Build failed with --disable-zypp configure option as below

./client/utils/JsonFormatter.h:49: undefined reference to `json_object_put'
/bin/sh ../libtool  --tag=CXX   --mode=link g++  -g -O2 -fdebug-prefix-map=/build/snapper-0.8.15=. -fstack-protector-strong -Wformat -Werror=format-security -std=c++11 -Wall -Wextra -Wformat -Wnon-virtual-dtor -Wno-unused-parameter -Wsuggest-override  -Wl,-z,relro -Wl,-z,now -o systemd-helper systemd-helper.o cleanup.o proxy.o proxy-dbus.o proxy-lib.o misc.o libclient.la ../snapper/libsnapper.la utils/libutils.la ../dbus/libdbus.la -lbtrfs
/usr/bin/ld: ./.libs/libclient.a(JsonFormatter.o): in function `snapper::operator<<(std::ostream&, snapper::JsonFormatter const&)':
./client/utils/JsonFormatter.cc:41: undefined reference to `json_object_to_json_string_ext'
collect2: error: ld returned 1 exit status
make[4]: *** [Makefile:718: snapper] Error 1

To avoid it, disable check for with_zypp in configure .ac

 configure.ac | 2 --
 1 file changed, 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 839d012..eead71d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -194,9 +194,7 @@ fi
 
 PKG_CHECK_MODULES(DBUS, dbus-1)
 PKG_CHECK_MODULES(XML2, libxml-2.0)
-if test "x$with_zypp" = "xyes"; then
    PKG_CHECK_MODULES(JSONC, json-c, [], [AC_MSG_WARN([Cannot find json-c. Please install libjson-c-devel])])
-fi
 
 AC_CHECK_HEADER(acl/libacl.h,[],[AC_MSG_ERROR([Cannout find libacl headers. Please install libacl-devel])])

But it is just a workaround, I guess.