/usr/bin/ccache g++ -o campaignd build/release/campaign_server/addon_utils.o build/release/campaign_server/blacklist.o build/release/server/input_stream.o build/release/campaign_server/campaign_server.o build/release/libwesnoth_core.a build/release/libwesnothd.a build/release/libcampaignd.a -L/home/shadowm/local/SDL2/lib -L/usr/lib -lm -lSDL2_net -lboost_iostreams -lboost_random -lboost_system -lboost_filesystem -lboost_locale
/usr/bin/ld: build/release/libwesnoth_core.a(thread.o): undefined reference to symbol 'SDL_UnlockMutex'
//usr/lib/x86_64-linux-gnu/libSDL2-2.0.so.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
scons: *** [campaignd] Error 1
scons: building terminated because of errors.
shadowm@nanacore:~/src/wesnoth-sdl2% cat .scons-option-cache
default_targets = 'campaignd,test,wesnoth,wesnothd'
extra_flags_config = '-pipe -march=native'
extra_flags_release = '-O3'
prefsdir = '.wesnoth-1.13'
server_gid = '1000'
server_uid = '1000'
strict = True
sdldir = '/home/shadowm/local/SDL2'
jobs = 4
ccache = True
lockfile = True