gcc compile errors with dirent.h (DIR) and glibc2

[rmang at ibm dot net]

I recently upgraded from libc5 gcc 2.7.2.1 i686-linux 2.0.36 to 
glibc2.1.3 and gcc-2.95.2 Everything went smoothly, was able to 
compile with new libraries, but suddenyl I am getting an error with 
configure scripts not being able to find support for DIR in dirent.h 
Here are the specific errors:
---
checking for dirent.h that defines DIR... no
checking for sys/ndir.h that defines DIR... no
checking for sys/dir.h that defines DIR... no
checking for ndir.h that defines DIR... no
checking for opendir in -lx... no
---
functions/dir.c:73: parse error before `*'
functions/dir.c: In function `php3i_destructor_closedir':
functions/dir.c:74: `dir' undeclared (first use in this function)
functions/dir.c:74: (Each undeclared identifier is reported only once
functions/dir.c:74: for each function it appears in.)
functions/dir.c: In function `php3_opendir':
functions/dir.c:90: `DIR' undeclared (first use in this function)
functions/dir.c:90: `dirp' undeclared (first use in this function)
functions/dir.c:91: parse error before `int'
functions/dir.c:107: `ret' undeclared (first use in this function)
functions/dir.c: In function `php3_closedir':
functions/dir.c:119: `DIR' undeclared (first use in this function)
functions/dir.c:119: `dirp' undeclared (first use in this function)
functions/dir.c:120: parse error before `int'
functions/dir.c:140: parse error before `)'
functions/dir.c:141: `dirp_type' undeclared (first use in this function)
---
Thi program had compiled under the new setup previously, but now 
my system cannot link/find correctly the DIR functions. I reinstalled 
gcc and glibc2, both without error. Any ideas what I am missing / 
could be wrong? Thnak you for your help.

Rob Mangiafico