Added global constructors for kernel-space.

Updated Makefile to generate crtbegin.o and crtend.o.
Separated crti.s and crtn.s from the normal directory because the objects need to be linked in a specific order along with crtbegin.o and crtend.o.
Added comments to describe the makefile better.

Makefile

@@ -1,10 +1,18 @@
 #Standard Compiling Options
+
+#Something weird with i386 vs i686
 ARCH ?= i386
 C := i686-elf-gcc
 CXX := i686-elf-g++
 AS := i686-elf-as
-SRCDIR := src
-SRCDIRS := src/arch/$(ARCH) src/kernel src/libc
+
+#Separate out source directories for better compartmentalization
+SRCDIR 			:= src
+ARCHDIR 		:= $(SRCDIR)/arch/$(ARCH) 
+LIBCDIR 		:= $(SRCDIR)/libc
+KERNELDIR 		:= $(SRCDIR)/kernel
+SRCDIRS 		:= $(ARCHDIR) $(LIBCDIR) $(KERNELDIR)
+
 BUILDDIR := build
 INCDIR := include
 TARGET := bin/ZoarialBareOS.iso
@@ -17,39 +25,53 @@ CPPSRCEXT := cpp
 CPPINCEXT := hpp
 ASSRCEXT := s
 
+#Locate C and C++ files
 CSOURCES := $(shell find $(SRCDIRS) -type f -name "*.$(CSRCEXT)")
 CPPSOURCES := $(shell find $(SRCDIRS) -type f -name "*.$(CPPSRCEXT)")
+#Get object files from C and C++ source files 
 OBJECTS := $(patsubst $(SRCDIR)/%,$(BUILDDIR)/%,$(CSOURCES:.$(CSRCEXT)=.o)) $(patsubst $(SRCDIR)/%,$(BUILDDIR)/%,$(CPPSOURCES:.$(CPPSRCEXT)=.o))
 
-#$(info OBJECTS is $(OBJECTS))
-
+#Get assembly source files and create objects from them 
 ASSOURCES := $(shell find $(SRCDIRS) -type f -name "*.$(ASSRCEXT)")
 ASOBJECTS := $(patsubst $(SRCDIR)/%,$(BUILDDIR)/%,$(ASSOURCES:.$(ASSRCEXT)=.o))
 
+#Find dependencies from C and C++ source files
 DEPENDENCIES := $(patsubst $(SRCDIR)/%,$(DEPDIR)/%,$(CSOURCES:.$(CSRCEXT)=.d))
 DEPENDENCIES := $(DEPENDENCIES) $(patsubst $(SRCDIR)/%,$(DEPDIR)/%,$(CPPSOURCES:.$(CPPSRCEXT)=.d))
 
+
+#Directories needed by gcc 
 LIB := 
 LIBDIR :=  
+INC := -I include/ -I include/libc/
+
+#Combined flags (Both C and C++)
 FLAGS := -O2 -Wall -Wextra -g -D__is_kernel -ffreestanding
+#Specific flags
 CFLAGS := $(FLAGS) -std=gnu99 
 CXXFLAGS := $(FLAGS) -std=c++17
 ASFLAGS := 
-INC := -I include/ -I include/libc/
-
-#Testing Compiling Files and Arguments
-#TESTSOURCES := $(shell find $(TESTSRCDIR) -type f -name "*.$(SRCEXT)")
-#TESTOBJECTS := $(patsubst $(TESTSRCDIR)/%,$(TESTBUILDDIR)/%,$(TESTSOURCES:.$(SRCEXT)=.o))
-
-MAINOBJS := $(OBJECTS) $(ASOBJECTS)
 
+#Make sure certain directories are made
 $(shell mkdir -p $(BUILDDIR) $(DEPDIR) bin/)
 
+#Copy the tree structure of src/ to the build/ and dep/ directories
 TREE := $(shell find $(SRCDIR) -type d)
-
 $(shell mkdir -p $(patsubst $(SRCDIR)/%, $(BUILDDIR)/%, $(TREE)))
 $(shell mkdir -p $(patsubst $(SRCDIR)/%, $(DEPDIR)/%, $(TREE)))
 
+GLOBALARCHDIR	:= $(BUILDDIR)/arch/global-$(ARCH)
+
+#Define/create the global constructor objects
+CRTBEGINOBJ := $($(C) $(CFLAGS) -print-file-name=crtbegin.o)
+CRTENDOBJ := $($(C) $(CFLAGS) -print-file-name=crtend.o)
+
+CRTBEGIN := $(GLOBALARCHDIR)/crti.o $(GLOBALARCHDIR)/crtbegin.o
+CRTEND := $(GLOBALARCHDIR)/crtend.o $(GLOBALARCHDIR)/crtn.o
+
+#Order the objects to prevent weird gcc bugs with global constructors
+MAINOBJS := $(CRTBEGIN) $(OBJECTS) $(ASOBJECTS) $(CRTEND)
+
 #Compile Target
 bin/ZoarialBareOS.iso: bin/ZoarialBareOS.bin bin/grub.cfg
 	cp bin/ZoarialBareOS.bin $(BUILDDIR)/isodir/boot/
@@ -122,6 +144,11 @@ $(BUILDDIR)/%.o: $(SRCDIR)/%.$(ASSRCEXT)
 #Compile object
 	$(AS) $(ASFLAGS) -o $@ $<
 
+$(GLOBALARCHDIR)/crtbegin.o $(GLOBALARCHDIR)/crtend.o:
+	OBJ=`$(C) $(CFLAGS) -print-file-name=$(@F)` && cp "$$OBJ" $@
+
+
+
 #Clean
 clean:
 	@echo " Cleaning...";