manualy uClinux without niosftp.com/pub/uclinux/ tar file

You are talking about a custom makefile. Here is a hierachical study (in a tree shape) of it. I think there is no difference from building gcc from scratch. The makefile just sequentially build the kernel headers, uclib, binutils, gcc boostrap, gcc from their source.

But what i would like to know in my previous post was :

Is the content of that packs (obtained by "./checkout" ans so by "git checkout -f" that extract ".pack" files from each directory) the original content of each source separately, i mean the original source from each project located at website previously mentionned ?

If yes, great, i will download each source separatly, and execute the makefile step by step in order to build the toolchain manually.

Here is the makefile. His targets are hierarchical structured and a number is assigned to target to show to order of their execution.

all: toolchain+extras
    toolchain+extras: toolchain $(GDB_HOST) $(UBOOT_TOOLS)
        toolchain: gcc elf2flt
            gcc: uClibc-headers binutils gcc-bootstrap uClibc $(GCC_BUILD)/.installed      20
                uClibc-headers: kernel-headers $(SYSROOT)/.configured      5
                    kernel-headers: $(KERNEL_DIR)/.configured      2
                        $(KERNEL_DIR)/.configured:      1
                    $(SYSROOT)/.configured: $(UCLIBC_SRC)/.config      4
                        $(UCLIBC_SRC)/.config      3
                binutils: uClibc-headers $(INSTALLDIR)/$(TARGET_NAME)/bin/ld      9
                    uClibc-headers: kernel-headers $(SYSROOT)/.configured       
                    $(INSTALLDIR)/$(TARGET_NAME)/bin/ld: $(BINUTILS_BUILD)/binutils/objdump      8
                        $(BINUTILS_BUILD)/binutils/objdump: $(BINUTILS_BUILD)/.configured      7
                            $(BINUTILS_BUILD)/.configured:      6
                gcc-bootstrap: uClibc-headers binutils $(INSTALLDIR)/bin/$(TARGET_NAME)-gcc      13
                    uClibc-headers: kernel-headers $(SYSROOT)/.configured
                    binutils: uClibc-headers $(INSTALLDIR)/$(TARGET_NAME)/bin/ld
                    $(INSTALLDIR)/bin/$(TARGET_NAME)-gcc: $(GCC_BOOTSTRAP_BUILD)/.compiled      12
                        $(GCC_BOOTSTRAP_BUILD)/.compiled: $(GCC_BOOTSTRAP_BUILD)/.configured      11
                            $(GCC_BOOTSTRAP_BUILD)/.configured:      10
                uClibc: gcc-bootstrap $(INSTALLDIR)/lib/libc.a      16
                    gcc-bootstrap: uClibc-headers binutils $(INSTALLDIR)/bin/$(TARGET_NAME)-gcc
                    $(INSTALLDIR)/lib/libc.a: $(UCLIBC_SRC)/lib/libc.a      15
    
                        $(UCLIBC_SRC)/lib/libc.a: $(SYSROOT)/.configured      14
                            
                            $(SYSROOT)/.configured: $(UCLIBC_SRC)/.config
                $(GCC_BUILD)/.installed: $(GCC_BUILD)/.compiled      19
                    $(GCC_BUILD)/.compiled: $(GCC_BUILD)/.configured      18
                        $(GCC_BUILD)/.configured:      17
            elf2flt: uClibc-headers binutils gcc $(ELF2FLT_SRC)/elf2flt      23END
                uClibc-headers: kernel-headers $(SYSROOT)/.configured 
                binutils: uClibc-headers $(INSTALLDIR)/$(TARGET_NAME)/bin/ld
                gcc: uClibc-headers binutils gcc-bootstrap uClibc $(GCC_BUILD)/.installed
                $(ELF2FLT_SRC)/elf2flt: $(ELF2FLT_SRC)/.configured $(INSTALLDIR)/$(TARGET_NAME)/bin/ld      22
                    $(ELF2FLT_SRC)/.configured:      21
                    $(INSTALLDIR)/$(TARGET_NAME)/bin/ld: $(BINUTILS_BUILD)/binutils/objdump