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

[Jean-Claude Gervais]

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"


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