Re: [gentoo-embedded] C compiler cannot create executables

[Jean-Claude Gervais]

On Tue, 2007-11-06 at 15:38 -0500, Jason wrote:
> Jean-Claude Gervais wrote:
> > On Tue, 2007-11-06 at 15:19 -0500, Jason wrote:
> >> Jean-Claude Gervais wrote:
> >>> On Tue, 2007-11-06 at 13:11 -0500, Jason wrote:
> >>>> Jean-Claude Gervais wrote:
> >>>>> On Tue, 2007-11-06 at 12:46 -0500, Jason wrote:
> >>>>>> Jean-Claude Gervais wrote:
> >>>>>>> Same problem, different environment:
> >>>>>>>
> >>>>>>> I produced a cross-development toolkit by using the following command:
> >>>>>>>
> >>>>>>> .-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
> >>>>>>> SYSROOT="/usr/arm-softfloat-linux-uclibc"
> >>>>>>>
> >>>>>>> UCLIBC_CPU="ARM920T" USE="-*" crossdev -v -S --binutils 2.17 --gcc
> >>>>>>> 3.4.6-r2 --kernel 2.6.19-r2 --libc 0.9.28.3 --ex-gdb --target
> >>>>>>> arm-softfloat-linux-uclibc
> >>>>>>> .-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
> >>>>>>>
> >>>>>>> This went well; all the required tools were built.
> >>>>>>>
> >>>>>>> But now when I try to use the (modified) xmerge script, I get the
> >>>>>>> "C compiler cannot create executables" error
> >>>>>> [snip]
> >>>>>>> configure:1225: checking build system type
> >>>>>>> configure:1243: result: i686-pc-linux-gnu
> >>>>>>> configure:1250: checking host system type
> >>>>>>> configure:1264: result: i686-softfloat-linux-uclibc
> >>>>>>> configure:1272: checking target system type
> >>>>>>> configure:1286: result: i686-softfloat-linux-uclibc
> >>>>>> This doesn't look right.  Did you setup ${SYSROOT}/etc/make.conf and
> >>>>>> ${SYSROOT}/etc/make.profile ?
> >>>>> I think I did; here is the contents of
> >>>>> /usr/arm-softfloat-linux-uclibc/etc/make.conf
> >>>>>
> >>>>> .-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
> >>>>> ACCEPT_KEYWORDS="arm"
> >>>>> ARCH="arm"
> >>>>>
> >>>>> CFLAGS="-Os -pipe -mfloat-abi=softfp -mfpu=vfp"
> >>>>> CHOST="i686-softfloat-linux-uclibc"
> >>>> This line should be:
> >>>> CHOST="arm-softfloat-linux-uclibc"
> >>> OK, I changed that line, performed a
> >>> crossdev -C arm-softfloat-linux-uclibc
> >>>
> >>> And then re-ran the toolchain build procedure I am using;
> >> judging by your initial ncurses build error, you haven't successfully
> >> xmerge'd anything into SYSROOT, so all you had to do was change CHOST in
> >> ${SYSROOT}/etc/make.conf, then try xmerge ncurses again.
> >>
> >>> SYSROOT="/usr/arm-softfloat-linux-uclibc"
> >>>
> >>> UCLIBC_CPU="ARM920T" USE="-*" crossdev -v -S --binutils 2.17 --gcc
> >>> 3.4.6-r2 --kernel 2.6.19-r2 --libc 0.9.28.3 --ex-gdb --target
> >>> arm-softfloat-linux-uclibc
> >> crossdev doesn't use SYSROOT, it creates it.  So there is no need to set it.
> >>
> >>> Which concluded with no errors.
> >>>
> >>> However, when I run any xmerge, I still get the same error
> >>> "C compiler cannot create executables"
> >> Did you repeat Section 3 of the cross-development guide after blowing
> >> away SYSROOT with crossdev -C <target>?
> >
> > Yes, absolutely.
> >
> >>   And set CHOST correctly?
> >
> > You mean in /usr/arm-softfloat-linux-uclibc/etc/make.conf ?
> > Yes.
> >
> > The make.conf at that location is
> >
> > ACCEPT_KEYWORDS="arm"
> > ARCH="arm"
> >
> > CFLAGS="-Os -pipe -mfloat-abi=softfp -mfpu=vfp"
> > CHOST="arm-softfloat-linux-uclibc"
> > CXXFLAGS="${CFLAGS}"
> > GENTOO_MIRRORS="http://open-systems.ufl.edu/mirrors/gentoo
> > http://prometheus.cs.wmich.edu/gentoo http://mirror.datapipe.net/gentoo
> > http://ftp.ucsb.edu/pub/m$
> > INPUT_DEVICES="keyboard"
> > MAKEOPTS="-j2"
> > USE="minimal symlink"
> > UCLIBC_CPU="ARM920T"
> >
>
> Okay, I suspect you fixed the error you were getting before
> (configure:1286: result: i686-softfloat-linux-uclibc), so let's take a
> look at the config.log again and see what's tripping it up this time.

Eureka! Or maybe I should say D'OH!

I had some invalid compiler options: -mfloat-abi=softfp -mfpu=vfp
in my CFLAGS!

I scanned the config.log too quickly last time. Sorry!

and
Thanks Jason!

J

-- 
gentoo-embedded@g.o mailing list