Build error on FreeBSD 10.2

Hi,

I tried building this so I could run capsh. However, I get this error:

$ make
===> src (all)
Warning: Object directory not changed from original /tmp/libcapsicum/src
cc  -O2 -pipe   -Wall -Werror -I /tmp/libcapsicum/src -std=gnu99 -Qunused-arguments  -fstack-protector -Wsystem-headers -Werror -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wunused-parameter -Wcast-align -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls -Wold-style-definition -Wmissing-variable-declarations -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -c libcapsicum.c -o libcapsicum.o
libcapsicum.c:48:11: error: implicit declaration of function 'cap_new' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
        fd_cap = cap_new(fd, rights);
                 ^
1 error generated.
*** Error code 1

Stop.
make[1]: stopped in /tmp/libcapsicum/src
*** Error code 1

Stop.
make: stopped in /tmp/libcapsicum

I've not immediately been able to come up with a workaround for it.

Given the age of the project, I'm guessing you built it around GCC and not clang, is the difference there?

Thank you,
Teran

PS: What exactly is capsh?