macosx: gperftools compile error, undeclared identifier 'pthread_atfork'

(cd /Users/buildbot/buildbot_slave/mac-x64-master-bldr/build/build/gperftools \
&& ./autogen.sh \
&& ./configure --prefix=/opt/couchbase --enable-minimal \
&& /Applications/Xcode.app/Contents/Developer/usr/bin/make \
&& /Applications/Xcode.app/Contents/Developer/usr/bin/make install-exec-am install-data-am)
. . .
libtool: compile: g++ -DHAVE_CONFIG_H -I. -I./src -I./src -DNO_TCMALLOC_SAMPLES -DNO_TCMALLOC_SAMPLES -DNO_HEAP_CHECK -D_THREAD_SAFE -DNDEBUG -Wall -Wwrite-strings -Woverloaded-virtual -Wno-sign-compare -fno-builtin-malloc -fno-builtin-free -fno-builtin-realloc -fno-builtin-calloc -fno-builtin-cfree -fno-builtin-memalign -fno-builtin-posix_memalign -fno-builtin-valloc -fno-builtin-pvalloc -Wno-unused-result -fno-exceptions -O3 -ggdb3 -MT libtcmalloc_minimal_internal_la-stack_trace_table.lo -MD -MP -MF .deps/libtcmalloc_minimal_internal_la-stack_trace_table.Tpo -c src/stack_trace_table.cc -o libtcmalloc_minimal_internal_la-stack_trace_table.o >/dev/null 2>&1

mv -f .deps/libtcmalloc_minimal_internal_la-stack_trace_table.Tpo .deps/libtcmalloc_minimal_internal_la-stack_trace_table.Plo

/bin/sh ./libtool --tag=CXX --mode=compile g++ -DHAVE_CONFIG_H -I. -I./src -I./src -DNO_TCMALLOC_SAMPLES -DNO_TCMALLOC_SAMPLES -DNO_HEAP_CHECK -D_THREAD_SAFE -DNDEBUG -Wall -Wwrite-strings -Woverloaded-virtual -Wno-sign-compare -fno-builtin-malloc -fno-builtin-free -fno-builtin-realloc -fno-builtin-calloc -fno-builtin-cfree -fno-builtin-memalign -fno-builtin-posix_memalign -fno-builtin-valloc -fno-builtin-pvalloc -Wno-unused-result -fno-exceptions -O3 -ggdb3 -MT libtcmalloc_minimal_internal_la-static_vars.lo -MD -MP -MF .deps/libtcmalloc_minimal_internal_la-static_vars.Tpo -c -o libtcmalloc_minimal_internal_la-static_vars.lo `test -f 'src/static_vars.cc' || echo './'`src/static_vars.cc

libtool: compile: g++ -DHAVE_CONFIG_H -I. -I./src -I./src -DNO_TCMALLOC_SAMPLES -DNO_TCMALLOC_SAMPLES -DNO_HEAP_CHECK -D_THREAD_SAFE -DNDEBUG -Wall -Wwrite-strings -Woverloaded-virtual -Wno-sign-compare -fno-builtin-malloc -fno-builtin-free -fno-builtin-realloc -fno-builtin-calloc -fno-builtin-cfree -fno-builtin-memalign -fno-builtin-posix_memalign -fno-builtin-valloc -fno-builtin-pvalloc -Wno-unused-result -fno-exceptions -O3 -ggdb3 -MT libtcmalloc_minimal_internal_la-static_vars.lo -MD -MP -MF .deps/libtcmalloc_minimal_internal_la-static_vars.Tpo -c src/static_vars.cc -fno-common -DPIC -o .libs/libtcmalloc_minimal_internal_la-static_vars.o

In file included from src/static_vars.cc:33:
In file included from ./src/static_vars.h:39:
In file included from ./src/base/spinlock.h:43:

./src/base/basictypes.h:280:9:
./src/base/basictypes.h:280:9: 35mwarning: _dyld_present' is deprecated: first deprecated in OS X 10.5 [-Wdeprecated-declarations]
ent' is deprecated: first deprecated in OS X 10.5 [-Wdeprecated-declarations]
if (_dyld_present()) {

/usr/include/mach-o/dyld.h:236:13: ning:
te: '_dyld_present' declared here
extern bool dyld_present(void) __OSX_AVAILABLE_BUT_DEPRECATED(MAC_10_1,MAC_10_5,IPHONE_NA,_IPHONE_NA);

rc/static_vars.cc:69:3: error:e of undeclared identifier 'pthread_atfork'
pthread_atfork(CentralCacheLockAll, // parent calls before fork
^

rning and 1 error generated.
make[1]: *** [libtcmalloc_minimal_internal_la-static_vars.lo] Error 1
make: *** [/opt/couchbase/lib/libtcmalloc_minimal.la] Error 2