Re: [ptxdist] (no subject)

[Michael Olbrich <m.olbrich@pengutronix.de>]

On Tue, Feb 24, 2015 at 09:28:29PM +0000, Rüdiger, Christoph wrote:
> Am 23.02.15 um 12:24 schrieb Michael Olbrich:> On Mon, Feb 23, 2015 at 09:13:56AM +0000, Rüdiger, Christoph wrote:
> >>> On Mon, Feb 23, 2015 at 01:38:40AM +0200, Anders Montonen wrote:
> >>>>
> >>>>> On 22 Feb 2015, at 21:17, Christoph Rüdiger <christoph.ruediger@rwth-
> >>> aachen.de> wrote:
> >>>>> Am 22.02.15 um 10:38 schrieb Michael Olbrich:
> >>>>>
> >>>>>> I don't know why the bash in Max OS X cannot handle this. Maybe it's
> >>> too
> >>>>>> old? What version are you using?
> >>>>> Your assumption is right. My OS X is 10.9.5 (Mavericks) and way newer
> >>>>> than the Ubuntu 10.04.4 which is the oldest system where I use ptxdist
> >>>>> for my day-to-day work. That's why I didn't took the version numbers
> >>>>> into account. But I was wrong:
> >>>>>
> >>>>> Ubuntu 10.04.4: bash 4.1.5(1)-release
> >>>>> OS X 10.9.5: bash 3.2.53(1)-release
> >>>>
> >>>> As you might have guessed, Bash 3.2 was the last version to be released
> >>> under
> >>>> the GPLv2 license, and Apple will not distribute any software covered by
> >>>> GPLv3.
> >>>
> >>> So you'll be stuck with the old version. Let's see if we can stay
> >>> compatible.
> >>
> >> You need to install a lot of GNU tools from exteranl sources (homebrew,
> >> MacPorts, Fink), so I do not see any problem in including bash into this
> >> list. My bigger problem is now, that there is no GNU linker available on OS
> >> X, so you need to use the LLVM linker which does not understand the
> >> -Wl,--as-needed flag. I need to dig deeper to understand since when GNU gcc
> >> set this flag by default and what the drawback is, if we remove this flag
> >> from the PTXDIST_HOST_LDFLAGS.
> > 
> > Hmm, "-Wl,--as-needed" should not be added implicitly and ptxdist should
> > only add it for target packages if PTXCONF_TARGET_LINKER_AS_NEEDED is set.
> 
> You are right. I just cross-read an article and got the information wrong.
> According to the GNU ld man page [1], --as-needed affects the DT_NEEDED flag
> only of dynamic libraries given _after_ --as-needed. As ptxdist sets it as
> the very last flag (see below), it is a useless flag.

Which ptxdist version are you using? At least for target packages we set it
in the right place. For me it looks like this:
[...]
wrapper: /usr/bin/icecc arm-v7a-linux-gnueabihf-gcc  -Wl,--as-needed -isystem [...]/platform-arm-hf/sysroot-target/include -isystem [...]/platform-arm-hf/sysroot-target/usr/include  -O3 -D_LARGEFILE64_SOURCE=1 -DHAVE_HIDDEN -o minigzip minigzip.o -L. libz.a -L[...]/platform-arm-hf/sysroot-target/lib -L[...]/platform-arm-hf/sysroot-target/usr/lib -Wl,-rpath-link -Wl,[...]/platform-arm-hf/sysroot-target/lib -Wl,-rpath-link -Wl,[...]/platform-arm-hf/sysroot-target/usr/lib
[...]

The wrapper script adds it before the other options.

> > If you start ptxdist with '-v' then all calls to the compiler and linker
> > are logged. Look for lines starting with 'wrapper:' in the logfile.
> 
> 
> wrapper:  gcc  -isystem /Volumes/BlueBox/src/OSELAS.Toolchain-2013.12.2/platform-arm-cortexa8-linux-gnueabihf-gcc-4.8.3-glibc-2.18-binutils-2.24-kernel-3.12-sanitized/sysroot-host/include -O3 -DNO_FSEEKO -DNO_STRERROR -DNO_vsnprintf -o minigzip minigzip.o -L. libz.a -L/Volumes/BlueBox/src/OSELAS.Toolchain-2013.12.2/platform-arm-cortexa8-linux-gnueabihf-gcc-4.8.3-glibc-2.18-binutils-2.24-kernel-3.12-sanitized/sysroot-host/lib -Wl,-rpath -Wl,/Volumes/BlueBox/src/OSELAS.Toolchain-2013.12.2/platform-arm-cortexa8-linux-gnueabihf-gcc-4.8.3-glibc-2.18-binutils-2.24-kernel-3.12-sanitized/sysroot-host/lib -Wl,-rpath -Wl,/this/is/a/long/path/to/make/host/tools/relocateable/with/chrpath/when/using/dev/packages -Wl,--as-needed

I'm not sure where the "-Wl,--as-needed" is comming from. The only thing
that is added at the end of the command-line is PTXDIST_HOST_LDFLAGS and
that's just the -L / -Wl,-rpath stuff.


> And here is the missing BASH_VERSINFO of Apple's bash:
> $ set | grep BASH_VERSINFO
> BASH_VERSINFO=([0]="3" [1]="2" [2]="53" [3]="1" [4]="release" [5]="x86_64-apple-darwin13")

So we could check for the version.

Michael

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