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

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binutils : http://ftp.gnu.org/gnu/binutils/

gcc3 : http://ftp.gnu.org/gnu/gcc/

linux-2.6 : http://www.kernel.org/

toolchain-build : ?

uClibc : http://www.uclibc.org/

elf2flt : ?

insight : ?

u-boot : ? http://www.denx.de/wiki/u-boot/sourcecode

uClinux-dist : http://www.uclinux.org/

nb : I don't understand the purpose of the "?" directories.

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toolchain-build: this is where you build the toolchain. It provides a custom Makefile, but I don't know what it adds that's different from building gcc, etc from scratch. This is not present in the MMU distribution because as far as I know the toolchain source is still not available :(

elf2flt: uClinux (no MMU) uses FLAT rather than ELF binaries, and this is used by the linker to convert them during the build. You'll notice that to build an application for uClinux you need to add a -elf2flt flag.

insight: something to do with debugging

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

I will answer alone.

For example, the linux-2.6 directory contains a nios2 arch directory but the no release of linux-2.6.... from www.kernel.org contains such a directory.