Ruby-install for 2.3.1 fails in OS 10.11.6

[npendery]

STOUT:

>>> Compiling ruby 2.3.1 ...
    CC = clang
    LD = ld
    LDSHARED = clang -dynamic -bundle
    CFLAGS = -O3 -fno-fast-math -ggdb3 -Wall -Wextra -Wno-unused-parameter -Wno-parentheses -Wno-long-long -Wno-missing-field-initializers -Wunused-variable -Wpointer-arith -Wwrite-strings -Wdeclaration-after-statement -Wshorten-64-to-32 -Wimplicit-function-declaration -Wdivision-by-zero -Wdeprecated-declarations -Wextra-tokens   -pipe
    XCFLAGS = -D_FORTIFY_SOURCE=2 -fstack-protector -fno-strict-overflow -fvisibility=hidden -DRUBY_EXPORT -fPIE
    CPPFLAGS = -I/usr/local/opt/openssl/include -I/usr/local/opt/readline/include -I/usr/local/opt/libyaml/include -I/usr/local/opt/gdbm/include -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -D_DARWIN_UNLIMITED_SELECT -D_REENTRANT   -I. -I.ext/include/x86_64-darwin15 -I./include -I.
    DLDFLAGS = -Wl,-undefined,dynamic_lookup -Wl,-multiply_defined,suppress -L/usr/local/opt/openssl/lib -L/usr/local/opt/readline/lib -L/usr/local/opt/libyaml/lib -L/usr/local/opt/gdbm/lib -fstack-protector -Wl,-u,_objc_msgSend -Wl,-pie -framework CoreFoundation
    SOLIBS =
Apple LLVM version 8.0.0 (clang-800.0.38)
Target: x86_64-apple-darwin15.6.0
Thread model: posix
InstalledDir: /Users/nickpendery/Downloads/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
translating probes probes.d
. ./vm_opts.h
file2lastrev.rb: does not seem to be under a vcs: .
make: [.revision.time] Error 1 (ignored)
./revision.h unchanged
compiling main.c
compiling dmydln.c
compiling miniinit.c
compiling dmyext.c
compiling miniprelude.c
compiling array.c
compiling bignum.c
compiling class.c
compiling compar.c
compiling complex.c
compiling dir.c
compiling dln_find.c
compiling encoding.c
compiling enum.c
compiling enumerator.c
compiling error.c
compiling eval.c
compiling load.c
compiling proc.c
compiling file.c
compiling gc.c
compiling hash.c
compiling inits.c
compiling io.c
compiling marshal.c
compiling math.c
compiling node.c
compiling numeric.c
compiling object.c
compiling pack.c
compiling parse.c
compiling process.c
compiling random.c
compiling range.c
compiling rational.c
compiling re.c
compiling regcomp.c
compiling regenc.c
compiling regerror.c
compiling regexec.c
compiling regparse.c
compiling regsyntax.c
compiling ruby.c
compiling safe.c
compiling signal.c
compiling sprintf.c
compiling st.c
compiling strftime.c
compiling string.c
compiling struct.c
compiling symbol.c
compiling time.c
compiling transcode.c
compiling util.c
compiling variable.c
compiling version.c
compiling compile.c
compiling debug.c
compiling iseq.c
compiling vm.c
compiling vm_dump.c
compiling vm_backtrace.c
compiling vm_trace.c
compiling thread.c
thread.c:1079:27: warning: implicit conversion loses integer precision: 'long' to '__darwin_suseconds_t' (aka 'int') [-Wshorten-64-to-32]
        tp->tv_usec = ts.tv_nsec / 1000;
                    ~ ~~~~~~~~~~~^~~~~~
1 warning generated.
compiling cont.c
compiling enc/ascii.c
compiling enc/us_ascii.c
compiling enc/unicode.c
compiling enc/utf_8.c
compiling enc/trans/newline.c
compiling ./missing/explicit_bzero.c
compiling ./missing/setproctitle.c
compiling dmyenc.c
linking miniruby
generating encdb.h
dyld: lazy symbol binding failed: Symbol not found: _clock_gettime
  Referenced from: /Users/nickpendery/src/ruby-2.3.1/./miniruby (which was built for Mac OS X 10.12)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: _clock_gettime
  Referenced from: /Users/nickpendery/src/ruby-2.3.1/./miniruby (which was built for Mac OS X 10.12)
  Expected in: /usr/lib/libSystem.B.dylib

make: *** [encdb.h] Trace/BPT trap: 5
!!! Compiling ruby 2.3.1 failed!

[dayyan]

Make sure you have xcode command line utils installed.

xcode-select —install