Undeclared variable in a cross compiled root filesystem

So I'm cross compiling a Linux root file system basically from scratch. I was able to get all the basic software cross compiled using a very basic toolchain from scratch. Below is the list of some of the software used:

• Binutils 2.32
• Glibc 2.29
• Linux 5.2.11
• Coreutils 8.31
• GCC 9.2.0
• pkgconf 1.6.3
• Make, autoconf, zlib, etc. for the root filesystem

Inside the rootfs using chroot I compile this small program using gcc:

#include <stdio.h>
#include <limits.h>

int main()
{
  printf("PATH_MAX=%u\n", PATH_MAX);
  return 0;
}

Which doesn't complete and outputs a error:

(chroot)$ gcc test.c -o test
test.c: In function 'main':
test.c:6:27: error: 'PATH_MAX' undeclared (first use in this function)
    6 |   printf("PATH_MAX=%u\n", PATH_MAX);
      |                           ^~~~~~~~
test.c:6:27: note: each undeclared identifier is reported only once for each function it appears in

However limits.h does exist in the chroot.

/usr/lib/gcc/x86_64-linux-gnu/9.2.0/install-tools/include/limits.h
/usr/lib/gcc/x86_64-linux-gnu/9.2.0/include-fixed/limits.h
/usr/include/c++/9.2.0/tr1/limits.h
/usr/include/limits.h
/usr/include/linux/limits.h

Lastly, below is the paths for gcc:

COLLECT_GCC_OPTIONS='-E''-v''-mtune=generic''-march=x86-64'
 /usr/lib/gcc/x86_64-linux-gnu/9.2.0/cc1 -E -quiet -v /dev/null -mtune=generic -march=x86-64
ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/9.2.0/../../../../x86_64-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/lib/gcc/x86_64-linux-gnu/9.2.0/include
 /usr/local/include
 /usr/lib/gcc/x86_64-linux-gnu/9.2.0/include-fixed
 /usr/include
End of search list.
# 1 "/dev/null"
# 1 "<built-in>"
# 1 "<command-line>"
# 31 "<command-line>"
# 1 "/usr/include/stdc-predef.h" 1 3 4
# 32 "<command-line>" 2
# 1 "/dev/null"
COMPILER_PATH=/usr/lib/gcc/x86_64-linux-gnu/9.2.0/:/usr/lib/gcc/x86_64-linux-gnu/9.2.0/:/usr/lib/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/9.2.0/:/usr/lib/gcc/x86_64-linux-gnu/
LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/9.2.0/:/usr/lib/gcc/x86_64-linux-gnu/9.2.0/../../../../lib/:/lib/../lib/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/9.2.0/../../../:/lib/:/usr/lib/

So with that being said, what is going on? I've looked through my toolchain and the actual root filesystem packages multiple times and everything looks okay. What could the problem be? Also what are some debugging steps that I can take to help identify this problem and any future problems down the road?