Re: building linux kernel on cygwin (and MacOSX) (was: crosstoolscygwin woes)

[bertrand marquis <bertrand_marquis at yahoo dot fr>]

Dan Kegel a écrit:

> bertrand marquis wrote:
>
> > > My failure from 3.3.3 is slightly different.
> > >
> > > $ make menuconfig
> > >  HOSTCC  scripts/basic/fixdep
> > >  HOSTCC  scripts/basic/split-include
> > >  HOSTCC  scripts/basic/docproc
> > >  HOSTLD  scripts/kconfig/mconf
> > > collect2: ld terminated with signal 11 [Segmentation fault], core 
> > > dumped
> > > scripts/kconfig/libkconfig.so(.text+0x0):crtstuff.c: multiple 
> > > definition of
> > > `___do_sjlj_init'
> > > /usr/lib/gcc-lib/i686-pc-cygwin/3.3.1/crtbegin.o(.text+0x0):crtstuff.c:
> > > first defined here
> > > make[1]: *** [scripts/kconfig/mconf] Error 1
> > > make: *** [menuconfig] Error 2
> >
> >
> >    I had the same problem last week. It seems that mconf is linked 
> > using a .so file. I had to change this to link mconf with the .o 
> > file. I also had problems because to compile the kconfg_elk or 
> > something like that program in script/, we need elf.h header. I solve 
> > that using the libelf to have a elf.h under cygwin.
>
>
> I assume you mean the one linked to from 
> http://www.gnu.org/directory/libs/misc/libelf.html
> (the one in elfutils from http://people.redhat.com/drepper/
> is problematic because (a) the author provides no source tarball,
> (b) doesn't release the whole package under a free license.) 


Yes i'm using the one from gnu.org as it is free and as it is the first 
one i found ...

> Maybe you could package up libelf as a cygwin package and contribute 
> it to the cygwin project.
> That would be quite helpful.

that's an idea, i will take a look at that

> > here is what i'm using:
> >
> > gcc 3.2.3
> > glibc 2.3.2
> > binutils 2.14
> > kernel 2.6.7 (but the patch is also good for 2.6.6)
> >
> > here is the patch i'm trying to use now, i'm still under progress for 
> > kernel 2.6.7 so i don't know if everything else will work:
> >
> > --- linux-x86-2.6.7/scripts/kconfig/Makefile    2004-06-16 
> > 07:20:26.000000000 +0200
> > +++ linux-x86-2.6.7.cyg/linux-x86-2.6.7/scripts/kconfig/Makefile    
> > 2004-06-24 10:39:18.824400000 +0200
> > @@ -68,8 +68,8 @@
> > libkconfig-objs := zconf.tab.o
> >
> > host-progs    := conf mconf qconf gconf
> > -conf-objs    := conf.o  libkconfig.so
> > -mconf-objs    := mconf.o libkconfig.so
> > +conf-objs    := conf.o  libkconfig.o
> > +mconf-objs    := mconf.o zconf.tab.o
> >
> > ifeq ($(MAKECMDGOALS),xconfig)
> >     qconf-target := 1
> > @@ -89,11 +89,12 @@
> > endif
> >
> > clean-files    := libkconfig.so lkc_defs.h qconf.moc .tmp_qtcheck \
> > -           .tmp_gtkcheck zconf.tab.c zconf.tab.h lex.zconf.c
> > +           .tmp_gtkcheck zconf.tab.c zconf.tab.h lex.zconf.c 
> > libkconfig.o
> >
> > # generated files seem to need this to find local include files
> > HOSTCFLAGS_lex.zconf.o    := -I$(src)
> > HOSTCFLAGS_zconf.tab.o    := -I$(src)
> > +HOSTCFLAGS_libkconfig.o    := -I$(src)
> >
> > HOSTLOADLIBES_qconf    = -L$(QTLIBPATH) -Wl,-rpath,$(QTLIBPATH) 
> > -l$(QTLIB) -ldl
> > HOSTCXXFLAGS_qconf.o    = -I$(QTDIR)/include
> > @@ -101,6 +102,9 @@
> > HOSTLOADLIBES_gconf    = `pkg-config gtk+-2.0 gmodule-2.0 
> > libglade-2.0 --libs`
> > HOSTCFLAGS_gconf.o    = `pkg-config gtk+-2.0 gmodule-2.0 libglade-2.0 
> > --cflags`
> >
> > +$(obj)/libkconfig.c: $(obj)/zconf.tab.c $(obj)/lex.zconf.c
> > +    cp $< $@
> > +
> > $(obj)/conf.o $(obj)/mconf.o $(obj)/qconf.o $(obj)/gconf.o: 
> > $(obj)/zconf.tab.h
> >
> > $(obj)/qconf.o: $(obj)/.tmp_qtcheck
>
>
> I can't try that myself at the moment, but it looks reasonable,
> and non-cygwin-specific.
> Maybe someone could verify this helps Mac OS X build the linux
> kernel, and doesn't hurt building it on Linux?
> - Dan

The only update i had to the patch for kernel 2.6.6 is to mconf-objs to 
be able to do a make menuconfig for the rest it is the same patch than 
the one provided with crosstool for linux-2.6.6. By the way i think this 
would also work for kernel 2.6.6 and allow to build menuconfig.

Bertrand



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