This problem is a generic problem of gcc version 4.4 and later. The new behaviour documented by GCC: http://gcc.gnu.org/gcc-4.4/porting_to.html
I recommend importing the patch from http://www.openldap.org/its/index.cgi/Build?id=6832 More information: http://www.cyrius.com/journal/gcc/gcc-4.4-preprocessor-errors http://gcc.gnu.org/viewcvs?view=revision&revision=136209
