OSX compilation error #1

On OSX/64:

$ uname -r
10.8.0

Compilation fails:

$ ./configure --with-arch=x86_64


Trace:

compiling ../../../src/clSchemas/example/schema.cc for a
/usr/bin/c++ -g -DHAVE_CONFIG_H -I../../../src/clprobe-ui -I/Users/thomas/Devel/StepClassLibrary/x86_64 -I../../../src/cldai -I../../../src/cleditor -I../../../src/clstepcore -I../../../src/clutils -I../../../src/clSchemas/example -I../../../src/clivfasd -I/installed/include -c ../../../src/clSchemas/example/schema.cc
In file included from ../../../src/clSchemas/example/Sdaiclasses.h:7,
from ../../../src/clSchemas/example/schema.h:32,
from ../../../src/clSchemas/example/schema.cc:7:
../../../src/clSchemas/example/schema.h:1:1: error: unterminated #ifndef
In file included from ../../../src/clSchemas/example/schema.h:32,
from ../../../src/clSchemas/example/schema.cc:7:
../../../src/clSchemas/example/Sdaiclasses.h:1:1: error: unterminated #ifndef
In file included from ../../../src/clSchemas/example/schema.h:35,
from ../../../src/clSchemas/example/schema.cc:7:
../../../src/clSchemas/example/SdaiEXAMPLE_SCHEMA.h:1:1: error: unterminated #ifndef
In file included from ../../../src/clSchemas/example/schema.cc:7:
../../../src/clSchemas/example/schema.h:1:1: error: unterminated #ifndef
../../../src/clSchemas/example/schema.cc:1:1: error: unterminated #ifndef
../../../src/clSchemas/example/schema.cc: In function 'void SchemaInit(Registry&)':
../../../src/clSchemas/example/schema.cc:16: error: expected `}' at end of input
make: *** [schema.o] Error 1
mkProbe was unsuccessful in creating the Schema Library.

• exit 1