I am trying to compile my code in Ubuntu 11.10 and getting these errors and more.So far by googling it I think it is a linking error. Specifically, there have been suggestions to make sure you have the right headers and link the -lncurses library. I have already done that. I'm still getting this error. I also read that may be i should install the libncurses, but I already have it installed.
My MakeFile:
CPP = g++
CPPFLAGS = -c -Wall -g
LINK = g++
LDFLAGS_LINUX = -lpthread -lncurses
LDFLAGS = $(LDFLAGS_LINUX)
RM = rm
.SUFFIXES:
.SUFFIXES: .o .cpp
.cpp.o:
$(CPP) $(CPPFLAGS) $*.cpp -o $(SRC_DIR)$*.o
all: skygrid
skygrid: skygrid.o commServer.o pose.o robot.o
$(LINK) $(LDFLAGS) -o $@ $^
clean:
$(RM) -rf *.o skygrid
skygrid.o: skygrid.cpp definitions.h commServer.h pose.h robot.h
commServer.o: commServer.cpp commServer.h
pose.o: pose.cpp pose.h
robot.o: robot.cpp robot.h pose.h
My Errors:
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1094: undefined reference to `stdscr'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1094: undefined reference to `stdscr'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1094: undefined reference to `stdscr'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1094: undefined reference to `stdscr'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1104: undefined reference to `werase'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1106: undefined reference to `wprintw'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1107: undefined reference to `wprintw'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1109: undefined reference to `wprintw'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1111: undefined reference to `stdscr'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1111: undefined reference to `wgetch'
/home/fari/Desktop/FarahSkygrid/skygrid/src/skygrid.cpp:1116: undefined reference to `wtouchln'
I was having this problem with an ncurses program on Centos 6.2. It turns out that ncurses is sometimes split into two libraries, ncurses
and tinfo
. In my case, stdscr
exists in libtinfo
, not in libncurses, so adding -ltinfo
to the link line, after -lncurses
, solved the problem.