Re: tlug: ccp

["Manuel M. T. Chakravarty" <chak@example.com>]

Chris Sekiya <chris@example.com> wrote,

> On Tue, 15 Dec 1998, Scott Stone wrote:
> 
> > builds a first stage with an assembler, then uses the first stage to
> > compile the second stage, etc.
> 
> Check again, Scott.  You can't even configure egcs for compilation without
> a compiler, let alone build the sucker.
> 
> Look:
> 
> bash-2.02$ ../egcs-1.1b/configure --prefix=/usr i586-linux
> Created "Makefile" in /usr/src/newobj using "mt-frag"
> ../egcs-1.1b/configure: cc: command not found
> *** The command 'cc -o conftest -g   conftest.c' failed.
> *** You must set the environment variable CC to a working compiler.
> bash-2.02$ ../egcs-1.1b/gcc/configure --prefix=/usr i586-linux
> creating cache ./config.cache
> checking host system type... i586-pc-linux-gnu
> checking target system type... i586-pc-linux-gnu
> checking build system type... i586-pc-linux-gnu
> checking for gcc... no
> checking for cc... no
> configure: error: no acceptable cc found in $PATH
> 
> (not really 1.1b, it's patched up to 1.1.1)
> 
> It don't go.  No configure, then no Makefile.  No Makefile, no compiler.
> 
> Think about this.  Unless egcs ships with .S files for every .c,
> generation without a compiler can't possibly work.

Which won't be very handy, as the .S tends to be a bit
machine dependent ;-)

Actually, sometimes high-level compilers can bootstrap
themselves in a similar way, even if they are implemented in
the language that they compile.  They come as a set of .c
files generated by the compiler from its own sources on
another machine.  So, you compile the .c files and get a
first version of the compiler, which you then use to compile
the compiler by itself from the high-level language.  Nearly
like Muenchhausen (if you know his story :-)

I love compilers :-)

Manuel
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