Error recompiling php

[VagaStorm]

I'm trying to use rpmbuild to recompile php, but it gives me this error:
-------------------------------------
#define WITH_BCMATH 1
#endif
#ifdef __cplusplus
#include <stdlib.h>

configure: exit 1
+ make -j2
make: *** No targets specified and no makefile found. Stop.
------------------------------------------------
I'm thinking I'm probably missing some dependancy, but I'm realy have not sure. How can I find out what rpm provides that file?