Revert "maint: Update to latest gnulib"

[libvirt] [PATCH] Revert "maint: Update to latest gnulib"

Posted by Erik Skultety 7 years, 8 months ago

Revert @f8172388c which broke the build on Centos 6, because of old
autoconf (< 2.63b) not properly quoting arguments for shell.
---
So, the last working commit is cbc700208, but I didn't want to revert to that
one directly, since I'd like to poke gnulib about the issue first and find a
proper solution.

Anyhow, pushed under the build breaker rule.

 .gnulib | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.gnulib b/.gnulib
index 47c634c05..ce4ee4cbb 160000
--- a/.gnulib
+++ b/.gnulib
@@ -1 +1 @@
-Subproject commit 47c634c05a946651e2834dcf0cd7cd0dc7a21d3c
+Subproject commit ce4ee4cbb596a9d7de2786cf8c48cf62a4edede7
--
2.13.3

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Re: [libvirt] [PATCH] Revert "maint: Update to latest gnulib"

Posted by Eric Blake 7 years, 8 months ago

[adding gnulib]

On 08/24/2017 12:20 PM, Erik Skultety wrote:
> Revert @f8172388c which broke the build on Centos 6, because of old
> autoconf (< 2.63b) not properly quoting arguments for shell.
> ---
> So, the last working commit is cbc700208, but I didn't want to revert to that
> one directly, since I'd like to poke gnulib about the issue first and find a
> proper solution.

To make sure I'm understanding, the issue is that the new
[gl_MANYWARN_ALL_GCC(C)] macro added in gnulib commit 461664a6 doesn't
play nicely with older autoconf's implementation for getting autom4te to
do tracing, with the following effect on the libvirt build:

./bootstrap: .gnulib/gnulib-tool  --import --no-changelog --aux-dir
build-aux --doc-base doc --lib libgnu --m4-base m4/ --source-base
gnulib/lib/ --tests-base gnulib/tests --local-dir gnulib/local  --lgpl=2
--with-tests --makefile-name=gnulib.mk --avoid=pt_chown
--avoid=lock-tests --libtool --import ...
...
autoreconf: running: aclocal --force -I m4
sh: -c: line 0: syntax error near unexpected token `('
sh: -c: line 0: `/usr/bin/m4 --nesting-limit=1024
--include=/usr/share/autoconf --debug=aflq --fatal-warning
--debugfile=autom4te.cache/traces.122t --trace=AB_INIT --trace=AC_ ....
--trace=gl_MANYWARN_ALL_GCC --trace=gl_MANYWARN_ALL_GCC(C)
--trace=gl_MANYWARN_COMPLEMENT .... m4/wcrtomb.m4 m4/wctob.m4
m4/wctomb.m4 m4/wctype_h.m4 m4/wint_t.m4 m4/write.m4 m4/xalloc.m4
m4/xsize.m4 configure.ac > autom4te.cache/output.122t'
autom4te: /usr/bin/m4 failed with exit status: 1
aclocal: autom4te failed with exit status: 1
autoreconf: aclocal failed with exit status: 1
./bootstrap: autoreconf failed

Where looking through autoconf history, was indeed something that
autoconf fixed in commit 9f28c6e (autoconf 2.63b) (CentOS 6 is still
stuck on the older autoconf 2.63).
https://lists.gnu.org/archive/html/autoconf-patches/2009-01/msg00051.html

Sadly, I didn't quickly find a workaround in the archives for how to NOT
trace a macro whose name is problematic; it may be as simple as avoiding
AC_DEFUN for the tricky macro name (using lower-level primitives to
define the macro but NOT trace it during aclocal, then compensating to
make sure aclocal still pulls in the right .m4 files based on something
else that is traceable).

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Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

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Re: [libvirt] [PATCH] Revert "maint: Update to latest gnulib"

Posted by Eric Blake 7 years, 8 months ago

On 08/24/2017 12:20 PM, Erik Skultety wrote:
> Revert @f8172388c which broke the build on Centos 6, because of old
> autoconf (< 2.63b) not properly quoting arguments for shell.
> ---
> So, the last working commit is cbc700208, but I didn't want to revert to that
> one directly, since I'd like to poke gnulib about the issue first and find a
> proper solution.

Gnulib now has the proper solution; you can update the .gnulib submodule
to fa96a1883 and get compilation on CentOS 6 running again.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

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Re: [libvirt] [PATCH] Revert "maint: Update to latest gnulib"

Posted by Erik Skultety 7 years, 8 months ago

On Thu, Aug 24, 2017 at 08:50:30PM -0500, Eric Blake wrote:
> On 08/24/2017 12:20 PM, Erik Skultety wrote:
> > Revert @f8172388c which broke the build on Centos 6, because of old
> > autoconf (< 2.63b) not properly quoting arguments for shell.
> > ---
> > So, the last working commit is cbc700208, but I didn't want to revert to that
> > one directly, since I'd like to poke gnulib about the issue first and find a
> > proper solution.
>
> Gnulib now has the proper solution; you can update the .gnulib submodule
> to fa96a1883 and get compilation on CentOS 6 running again.

Thank you Eric for such a prompt resolution, I'll update the gnulib submodule,
but since there were some comments to your patch in upstream [1], I'm going to
wait with that in case there are some more adjustments needed on gnulib's side.
Besides, the fix I was pulling in from gnulib wasn't critical for libvirt at
all.

Erik

[1] http://lists.gnu.org/archive/html/bug-gnulib/2017-08/msg00172.html

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