It looks like compilation of Python 3.5 fails on FreeBSD 6.4 because of the changeset bbe57429eba0a9ec21fb0f1178f409f1bba44c22:

http://buildbot.python.org/all/builders/x86%20FreeBSD%206.4%203.x/builds/5061

Compile log:
---

building '_ctypes' extension
creating build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi
creating build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src
creating build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/x86
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/_ctypes.c -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/_ctypes.o -Wall -fexceptions
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/callbacks.c -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/callbacks.o -Wall -fexceptions
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/callproc.c -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/callproc.o -Wall -fexceptions
/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/callproc.c: In function `py_dl_open':
/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/callproc.c:1336: warning: initialization discards qualifiers from pointer target type
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/stgdict.c -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/stgdict.o -Wall -fexceptions
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/cfield.c -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/cfield.o -Wall -fexceptions
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/prep_cif.c -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/prep_cif.o -Wall -fexceptions
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/closures.c -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/closures.o -Wall -fexceptions
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/x86/ffi.c -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/x86/ffi.o -Wall -fexceptions
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/x86/freebsd.S -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/x86/freebsd.o -Wall -fexceptions
gcc -pthread -shared build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/_ctypes.o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/callbacks.o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/callproc.o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/stgdict.o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/cfield.o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/prep_cif.o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/closures.o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/x86/ffi.o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/x86/freebsd.o -L/usr/local/lib -o build/lib.freebsd-6.4-RELEASE-i386-3.5-pydebug/_ctypes.so
*** WARNING: renaming "_ssl" since importing it failed: build/lib.freebsd-6.4-RELEASE-i386-3.5-pydebug/_ssl.so: Undefined symbol "X509_check_ca"
*** WARNING: renaming "_ctypes" since importing it failed: build/lib.freebsd-6.4-RELEASE-i386-3.5-pydebug/_ctypes.so: Undefined symbol "ffi_call_win32"
error: [Errno 2] No such file or directory: 'build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/_ctypes.o'
*** Error code 1
---

Before:
---
building '_ctypes' extension
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/_ctypes.c -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/_ctypes.o -Wall -fexceptions
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/callbacks.c -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/callbacks.o -Wall -fexceptions
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/callproc.c -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/callproc.o -Wall -fexceptions
/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/callproc.c: In function `py_dl_open':
/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/callproc.c:1336: warning: initialization discards qualifiers from pointer target type
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/stgdict.c -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/stgdict.o -Wall -fexceptions
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/cfield.c -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/cfield.o -Wall -fexceptions
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/prep_cif.c -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/prep_cif.o -Wall -fexceptions
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/closures.c -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/closures.o -Wall -fexceptions
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/x86/ffi.c -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/x86/ffi.o -Wall -fexceptions
gcc -pthread -fPIC -fno-strict-aliasing -Wsign-compare -g -O0 -Wall -Wstrict-prototypes -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi/include -Ibuild/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/libffi -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src -I./Include -I. -IInclude -I/usr/local/include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Include -I/usr/home/db3l/buildarea/3.x.bolen-freebsd/build -c /usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/x86/freebsd.S -o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/x86/freebsd.o -Wall -fexceptions
gcc -pthread -shared build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/_ctypes.o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/callbacks.o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/callproc.o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/stgdict.o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/cfield.o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/prep_cif.o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/closures.o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/x86/ffi.o build/temp.freebsd-6.4-RELEASE-i386-3.5-pydebug/usr/home/db3l/buildarea/3.x.bolen-freebsd/build/Modules/_ctypes/libffi/src/x86/freebsd.o -L/usr/local/lib -o build/lib.freebsd-6.4-RELEASE-i386-3.5-pydebug/_ctypes.so
*** WARNING: renaming "_ctypes" since importing it failed: build/lib.freebsd-6.4-RELEASE-i386-3.5-pydebug/_ctypes.so: Undefined symbol "ffi_call_win32"
---