Ceph

my kernel version is:
Linux redpower-ceph-01 4.2.0-16-generic #19-Ubuntu SMP Thu Oct 8 14:49:47 UTC 2015 ppc64le ppc64le ppc64le GNU/Linux

I cloned the ceph master branch to my local machine on 4/29

run make -j20 and see the following errors:

Compiling rados.pyx because it changed.
[1/1] Cythonizing rados.pyx
/usr/bin/ld: cannot find -lcurl
running build
running build_ext
building 'rados' extension
creating /home/min/clone/ceph/src/build/temp.linux-ppc64le-2.7
creating /home/min/clone/ceph/src/build/temp.linux-ppc64le-2.7/home
creating /home/min/clone/ceph/src/build/temp.linux-ppc64le-2.7/home/min
creating /home/min/clone/ceph/src/build/temp.linux-ppc64le-2.7/home/min/clone
creating /home/min/clone/ceph/src/build/temp.linux-ppc64le-2.7/home/min/clone/ceph
creating /home/min/clone/ceph/src/build/temp.linux-ppc64le-2.7/home/min/clone/ceph/src
creating /home/min/clone/ceph/src/build/temp.linux-ppc64le-2.7/home/min/clone/ceph/src/build
gcc -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -iquote /home/min/clone/ceph/src/include -Wall -Wtype-limits -Wignored-qualifiers -Winit-self -Wpointer-arith -Werror=format-security -fno-strict-aliasing -fsigned-char -rdynamic -O2 -g -pipe -Wall -Wp,-U_FORTIFY_SOURCE -Wp,-D_FORTIFY_SOURCE=2 -fexceptions --param=ssp-buffer-size=4 -fPIE -fstack-protector-strong -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free -I/usr/include/python2.7 -I/usr/include/powerpc64le-linux-gnu/python2.7 -fno-strict-aliasing -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -iquote /home/min/clone/ceph/src/include -D__CEPH__ -D_FILE_OFFSET_BITS=64 -D_THREAD_SAFE -D__STDC_FORMAT_MACROS -D_GNU_SOURCE -DCEPH_LIBDIR=/usr/local/lib -DCEPH_PKGLIBDIR=/usr/local/lib/ceph -DGTEST_USE_OWN_TR1_TUPLE=0 -D_REENTRANT -fPIC -I/usr/include/python2.7 -c /home/min/clone/ceph/src/build/rados.c -o /home/min/clone/ceph/src/build/temp.linux-ppc64le-2.7/home/min/clone/ceph/src/build/rados.o
collect2: error: ld returned 1 exit status
Makefile:15721: recipe for target 'ceph-dencoder' failed
make²: * [ceph-dencoder] Error 1
make²: Waiting for unfinished jobs....
ar: `u' modifier ignored since `D' is the default (see `U')
creating /home/min/clone/ceph/src/build/lib.linux-ppc64le-2.7
gcc -shared -L/home/min/clone/ceph/src/.libs -Wl,--as-needed -Wl,-z,relro -Wl,-z,now -latomic_ops -L/usr/lib/python2.7/config-powerpc64le-linux-gnu -L/usr/lib -lpython2.7 -lpthread -ldl -lutil -lm -Xlinker -export-dynamic -Wl,-O1 -Wl,-Bsymbolic-functions -iquote /home/min/clone/ceph/src/include -Wall -Wtype-limits -Wignored-qualifiers -Winit-self -Wpointer-arith -Werror=format-security -fno-strict-aliasing -fsigned-char -rdynamic -O2 -g -pipe -Wall -Wp,-U_FORTIFY_SOURCE -Wp,-D_FORTIFY_SOURCE=2 -fexceptions --param=ssp-buffer-size=4 -fPIE -fstack-protector-strong -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free -I/usr/include/python2.7 -I/usr/include/powerpc64le-linux-gnu/python2.7 -fno-strict-aliasing -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -iquote /home/min/clone/ceph/src/include -D__CEPH__ -D_FILE_OFFSET_BITS=64 -D_THREAD_SAFE -D__STDC_FORMAT_MACROS -D_GNU_SOURCE -DCEPH_LIBDIR=/usr/local/lib -DCEPH_PKGLIBDIR=/usr/local/lib/ceph -DGTEST_USE_OWN_TR1_TUPLE=0 -D_REENTRANT /home/min/clone/ceph/src/build/temp.linux-ppc64le-2.7/home/min/clone/ceph/src/build/rados.o -lrados -o /home/min/clone/ceph/src/build/lib.linux-ppc64le-2.7/rados.so
copying selected object files to avoid basename conflicts...
ar: `u' modifier ignored since `D' is the default (see `U')
make²: Leaving directory '/home/min/clone/ceph/src'
Makefile:30638: recipe for target 'all-recursive' failed
make¹: [all-recursive] Error 1
make¹: Leaving directory '/home/min/clone/ceph/src'
Makefile:12519: recipe for target 'all' failed
make: * [all] Error 2