Headerfile is not properly included - c

Question

A Header file(stdint.h) is not included. I know a lot of code is following, but I have really no idea.
My Files:
gdt.c
/* We need 8 segments */
#include <stdint.h>
#include "gdt.h"
#define GDT_SIZE 8
uint32_t intr;
gdt_entry gdtable[GDT_SIZE];
include/gdt.h
#ifndef GDT_H
#define GDT_H
#include <stdint.h>
struct gdt_entry{
uint_16t limit;
uint_32t base :24;
uint_32t accessbyte :8;
uint_32t limit2 :4;
uint_32t flags2 :4;
uint_32t base2 :8;
}__attribute__((packed));
#endif
include/stdint.h
#ifndef STDINT_H
#define STDINT_H
typedef unsigned long long uint64_t;
typedef unsigned int uint32_t;
typedef unsigned short uint16_t;
typedef unsigned char uint8_t;
typedef signed long long int64_t;
typedef signed int int32_t;
typedef signed short int16_t;
typedef signed char int8_t;
#endif
Makefile:
SRCS = $(shell find -name '*.[cS]')
OBJS = $(addsuffix .o,$(basename $(SRCS)))
CC = gcc
LD = ld
ASFLAGS = -m32
CFLAGS = -m32 -Wall -g -fno-stack-protector -I include
LDFLAGS = -melf_i386 -Tkernel.ld
kernel: $(OBJS)
$(LD) $(LDFLAGS) -o $# $^
%.o: %.c
$(CC) $(CFLAGS) -c -o $# $^
%.o: %.S
$(CC) $(ASFLAGS) -c -o $# $^
clean:
rm $(OBJS)
.PHONY: clean
kernel.ld
/* start should be executed first */
ENTRY(_start)
/*
* thats how the sections should be written in the .elf binary
*/
SECTIONS
{
/*
* the first section has a 1MB Offset for the grub bootloader
*/
. = 0x100000;
/*
* the multiboot header comes first
*/
.text : {
*(multiboot)
*(.text)
}
.data ALIGN(4096) : {
*(.data)
}
.rodata ALIGN(4096) : {
*(.rodata)
}
.bss ALIGN(4096) : {
*(.bss)
}
}
gcc output:
gcc -m32 -c -o start.o start.S
gcc -m32 -Wall -g -fno-stack-protector -I include -c -o gdt.o gdt.c
In file included from gdt.c:3:0:
include/gdt.h:5:2: error: unknown type name ‘uint_16t’
include/gdt.h:6:2: error: unknown type name ‘uint_32t’
include/gdt.h:7:2: error: unknown type name ‘uint_32t’
include/gdt.h:8:2: error: unknown type name ‘uint_32t’
include/gdt.h:9:2: error: unknown type name ‘uint_32t’
include/gdt.h:10:2: error: unknown type name ‘uint_32t’
gdt.c:7:1: error: unknown type name ‘gdt_entry’
make: *** [gdt.o] Error 1

Answer 1

I think you should use uint32_t instead of the non-standard uint_32t. It's at least the third variant I've come across, previously I've also seen u_int32_t.

Answer 2

There was another issue:
gdt_entry gdtable[GDT_SIZE]; should be struct gdt_entry gdtable[GDT_SIZE]