Raspbian on compiling error.

[Konatofu]

When I'm going to compile shows this error does anyone know what to do to compile without error ?

/* machine spec */
OS : Raspbian (Debian 8 Jessie)

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$ uname -a
Linux raspberrypi 4.4.34-v7

$ cat /etc/issue
Raspbian GNU/Linux 8 \n \l

gcc :

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$ gcc --version
gcc (Raspbian 5.4.1-4) 5.4.1 20161202

Compiling output message
 

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raspberrypi:~/rAthena $ ./configure --enable-packetver=20120618 --enable-prere=yes
checking for g++... g++
checking whether the C++ compiler works... yes
checking for C++ compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking how to run the C++ preprocessor... g++ -E
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking minix/config.h usability... no
checking minix/config.h presence... no
checking for minix/config.h... no
checking whether it is safe to define __EXTENSIONS__... yes
checking whether make sets $(MAKE)... yes
checking for gcc... gcc
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking whether we are using the GNU C++ compiler... (cached) yes
checking whether g++ accepts -g... (cached) yes
checking for ar... /usr/bin/ar
checking whether byte ordering is bigendian... no
checking whether gcc produces 32bit code... yes
checking whether gcc supports -march=i686 (and we can run it)... no
checking whether gcc supports __thread specifier (TLS)... yes
checking whether gcc supports -ffat-lto-objects... yes
checking whether gcc supports -flto -fuse-linker-plugin... yes
checking whether gcc supports -Wno-unused-parameter... yes
checking whether gcc can actually use -Wno-unused-parameter... not needed but enabled
checking whether gcc supports -Wempty-body... yes
checking whether gcc supports -Wno-switch... yes
checking whether gcc supports -Wno-missing-field-initializers... yes
checking whether compiler is clang... no
checking whether gcc supports -Wno-maybe-uninitialized... yes
checking whether gcc supports -Wno-clobbered... yes
checking whether gcc supports -Wshadow... yes
checking whether gcc can efficiently use -Wshadow... yes
checking whether gcc supports -fPIC... yes
checking how to make shared objects... not supported
configure: compiler is unable to generate shared objects, disabled plugins (optional)
checking whether gcc supports -fno-strict-aliasing... yes
checking for setrlimit... yes
checking for strnlen... yes
checking for uselocale... yes
checking for newlocale... yes
checking for freelocale... yes
checking for xlocale.h... yes
checking for library containing inflateEnd... -lz
checking for zlib.h... yes
checking for library containing sqrt... none required
checking for library containing clock_gettime... none required
checking whether CLOCK_MONOTONIC is supported and works... yes
checking for library containing pthread_create... -lpthread
checking for library containing pthread_sigmask... none required
checking for library containing pthread_attr_init... none required
checking for library containing pthread_attr_setstacksize... none required
checking for library containing pthread_attr_destroy... none required
checking for library containing pthread_cancel... none required
checking for library containing pthread_join... none required
checking for mysql_config... /usr/bin/mysql_config
checking for mysql_init in -lmysqlclient... yes
checking mysql.h usability... yes
checking mysql.h presence... yes
checking for mysql.h... yes
checking MySQL library (required)... yes (5.5.60)
checking for library containing pcre_study... -lpcre
checking PCRE library (optional)... yes (8.35)
checking host OS... Linux
checking for MinGW... no
configure: Configure finish
configure: CPPFLAGS=  -DMAXCONN=16384 -I../common -DHAS_TLS -fno-strict-aliasing -DHAVE_SETRLIMIT -DHAVE_STRNLEN -DPACKETVER=20120618 -DPRERE  -I/usr/include -DHAVE_MONOTONIC_CLOCK
configure: CFLAGS= -flto -fuse-linker-plugin -g -O2 -pipe -ffast-math -Wall -Wempty-body -Wno-switch -Wno-missing-field-initializers -Wno-maybe-uninitialized -Wno-clobbered -Wshadow
configure: CFLAGS_AR= -flto -fuse-linker-plugin -ffat-lto-objects -flto -fuse-linker-plugin -g -O2 -pipe -ffast-math -Wall -Wempty-body -Wno-switch -Wno-missing-field-initializers -Wno-maybe-uninitialized -Wno-clobbered -Wshadow
configure: LDFLAGS=  -L/usr/lib
configure: output name =  login-server, char-server, map-server
configure: creating ./config.status
config.status: creating Makefile
config.status: creating src/common/Makefile
config.status: creating 3rdparty/mt19937ar/Makefile
config.status: creating 3rdparty/libconfig/Makefile
config.status: creating 3rdparty/yaml-cpp/Makefile
config.status: creating src/char/Makefile
config.status: creating src/login/Makefile
config.status: creating src/map/Makefile
config.status: creating src/tool/Makefile

raspberrypi:~/rAthena $ make clean
make[1]: Entering directory '/home/hercuser/rAthena/src/common'
        CLEAN   common
make[1]: Leaving directory '/home/hercuser/rAthena/src/common'
make[1]: Entering directory '/home/hercuser/rAthena/3rdparty/mt19937ar'
        CLEAN   mt19937ar
make[1]: Leaving directory '/home/hercuser/rAthena/3rdparty/mt19937ar'
make[1]: Entering directory '/home/hercuser/rAthena/3rdparty/libconfig'
        CLEAN   libconfig
make[1]: Leaving directory '/home/hercuser/rAthena/3rdparty/libconfig'
make[1]: Entering directory '/home/hercuser/rAthena/3rdparty/yaml-cpp'
        CLEAN   yaml-cpp
make[1]: Leaving directory '/home/hercuser/rAthena/3rdparty/yaml-cpp'
make[1]: Entering directory '/home/hercuser/rAthena/src/login'
        CLEAN   login
make[1]: Leaving directory '/home/hercuser/rAthena/src/login'
make[1]: Entering directory '/home/hercuser/rAthena/src/char'
        CLEAN   char
make[1]: Leaving directory '/home/hercuser/rAthena/src/char'
make[1]: Entering directory '/home/hercuser/rAthena/src/map'
        CLEAN   map
make[1]: Leaving directory '/home/hercuser/rAthena/src/map'
make[1]: Entering directory '/home/hercuser/rAthena/src/tool'
        CLEAN   tool
make[1]: Leaving directory '/home/hercuser/rAthena/src/tool'

raspberrypi:~/rAthena $ make server
make[1]: Entering directory '/home/hercuser/rAthena/3rdparty/mt19937ar'
        CC      mt19937ar.c
make[1]: Leaving directory '/home/hercuser/rAthena/3rdparty/mt19937ar'
make[1]: Entering directory '/home/hercuser/rAthena/3rdparty/libconfig'
        MKDIR   obj
        CC      grammar.c
        CC      libconfig.c
        CC      scanctx.c
        CC      scanner.c
        CC      strbuf.c
        AR      obj/libconfig.a
make[1]: Leaving directory '/home/hercuser/rAthena/3rdparty/libconfig'
make[1]: Entering directory '/home/hercuser/rAthena/3rdparty/yaml-cpp'
        MKDIR   obj/src/contrib
        CXX     src/singledocparser.cpp
        CXX     src/exp.cpp
        CXX     src/emitterutils.cpp
        CXX     src/scantoken.cpp
        CXX     src/emitter.cpp
        CXX     src/nodeevents.cpp
        CXX     src/contrib/graphbuilder.cpp
        CXX     src/contrib/graphbuilderadapter.cpp
        CXX     src/ostream_wrapper.cpp
        CXX     src/exceptions.cpp
        CXX     src/parse.cpp
        CXX     src/stream.cpp
        CXX     src/emitfromevents.cpp
        CXX     src/parser.cpp
        CXX     src/regex_yaml.cpp
        CXX     src/null.cpp
        CXX     src/nodebuilder.cpp
        CXX     src/convert.cpp
        CXX     src/scanner.cpp
        CXX     src/scantag.cpp
        CXX     src/directives.cpp
        CXX     src/node.cpp
        CXX     src/emit.cpp
        CXX     src/node_data.cpp
        CXX     src/emitterstate.cpp
        CXX     src/tag.cpp
        CXX     src/memory.cpp
        CXX     src/scanscalar.cpp
        CXX     src/binary.cpp
        CXX     src/simplekey.cpp
        AR      obj/yaml-cpp.a
make[1]: Leaving directory '/home/hercuser/rAthena/3rdparty/yaml-cpp'
make[1]: Entering directory '/home/hercuser/rAthena/src/common'
        MKDIR   obj
        CXX     core.cpp
        CC      socket.c
        CC      timer.c
        CC      db.c
        CC      nullpo.c
        CC      malloc.c
        CC      showmsg.c
        CC      strlib.c
        CC      utils.c
        CXX     utilities.cpp
        CC      grfio.c
        CC      mapindex.c
        CC      ers.c
        CC      md5calc.c
        CXX     core.cpp
        CC      socket.c
        CC      malloc.c
        CC      random.c
        CC      des.c
        CC      conf.c
        CC      thread.c
        CC      mutex.c
        CC      raconf.c
        CC      mempool.c
        CC      msg_conf.c
        CC      cli.c
        CC      sql.c
        CXX     yamlwrapper.cpp
        AR      obj/common.a
make[1]: Leaving directory '/home/hercuser/rAthena/src/common'
make[1]: Entering directory '/home/hercuser/rAthena/src/login'
        MKDIR   obj
        CXX     account.cpp
        CXX     ipban.cpp
        CXX     login.cpp
        CXX     loginchrif.cpp
        CXX     loginclif.cpp
        CXX     logincnslif.cpp
        CXX     loginlog.cpp
        LD      login-server
make[1]: Leaving directory '/home/hercuser/rAthena/src/login'
make[1]: Entering directory '/home/hercuser/rAthena/src/char'
        MKDIR   obj
        CXX     char.cpp
        CXX     char_clif.cpp
        CXX     char_cnslif.cpp
        CXX     char_logif.cpp
        CXX     char_mapif.cpp
        CXX     int_achievement.cpp
        CXX     int_auction.cpp
        CXX     int_clan.cpp
        CXX     int_elemental.cpp
        CXX     int_guild.cpp
        CXX     int_homun.cpp
        CXX     int_mail.cpp
        CXX     int_mercenary.cpp
        CXX     int_party.cpp
        CXX     int_pet.cpp
        CXX     int_quest.cpp
        CXX     int_storage.cpp
        CXX     inter.cpp
        LD      char-server
make[1]: Leaving directory '/home/hercuser/rAthena/src/char'
make[1]: Entering directory '/home/hercuser/rAthena/src/map'
        MKDIR   obj
        CXX     achievement.cpp
        CXX     atcommand.cpp
        CXX     battle.cpp
        CXX     battleground.cpp
        CXX     buyingstore.cpp
        CXX     cashshop.cpp
        CXX     channel.cpp
        CXX     chat.cpp
        CXX     chrif.cpp
        CXX     clan.cpp
        CXX     clif.cpp
        CXX     date.cpp
        CXX     duel.cpp
        CXX     elemental.cpp
        CXX     guild.cpp
        CXX     homunculus.cpp
        CXX     instance.cpp
        CXX     intif.cpp
        CXX     itemdb.cpp
        CXX     log.cpp
        CXX     mail.cpp
        CXX     map.cpp
        CXX     mapreg.cpp
        CXX     mercenary.cpp
        CXX     mob.cpp
        CXX     npc.cpp (custom rule)
        CXX     npc_chat.cpp
        CXX     party.cpp
        CXX     path.cpp
path.cpp:64:1: error: narrowing conversion of ‘(directions)-1’ from ‘int8 {aka signed char}’ to ‘char’ inside { } [-Wnarrowing]
 };
 ^

how to fixing this error? X<

Edited April 30, 2018 by Konatofu