address@hidden:~/jailkit-2.14/jailkit$ ./configure
configure: config files will be in /etc/jailkit/
checking for gcc... gcc
checking whether the C compiler works... yes
...
checking for pthread_create in -lpthread... yes
...
configure: creating ./config.status
config.status: creating Makefile
config.status: creating src/Makefile
config.status: creating py/Makefile
config.status: creating man/Makefile
config.status: creating src/config.h
address@hidden:~/jailkit-2.14/jailkit$ make
make[1]: Entering directory `/home/user/jailkit-2.14/jailkit/src'
gcc -g -O2 -Wall -pipe -DINIPREFIX=\"/etc/jailkit\" -c -o jk_socketd.o jk_socketd.c
gcc -g -O2 -Wall -pipe -DINIPREFIX=\"/etc/jailkit\" -c -o jk_lib.o jk_lib.c
gcc -g -O2 -Wall -pipe -DINIPREFIX=\"/etc/jailkit\" -c -o utils.o utils.c
gcc -g -O2 -Wall -pipe -DINIPREFIX=\"/etc/jailkit\" -c -o iniparser.o iniparser.c
gcc -lpthread -o jk_socketd jk_socketd.o jk_lib.o utils.o iniparser.o
jk_socketd.o: In function `main':
/home/user/jailkit-2.14/jailkit/src/jk_socketd.c:474: undefined reference to `pthread_create'
collect2: ld returned 1 exit status
make[1]: *** [jk_socketd] Error 1
make[1]: Leaving directory `/home/user/jailkit-2.14/jailkit/src'
make: *** [all] Error 2
address@hidden:~/jailkit-2.14/jailkit$
The configure seems to run OK and even reports back that the item the make fails on is there. This is a fresh build of 11.10.