[1/1] package/libmicrohttpd: Fix pthread detection on bfin and arc

Fixes
http://autobuild.buildroot.net/results/593/593b5050473a83a9ddcada9de39f8f14ab38d554/
http://autobuild.buildroot.net/results/ff0/ff058a378b91740b5b399f32a6b375fbc3c8df06/

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
---
 package/libmicrohttpd/0001-pthread-reentrant.patch | 31 ++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 package/libmicrohttpd/0001-pthread-reentrant.patch

Hello,

On Mon, 2016-06-13 at 21:28 +0200, Bernd Kuhls wrote:
> Fixes

> http://autobuild.buildroot.net/results/593/593b5050473a83a9ddcada9de39f8f14ab38d554/

> http://autobuild.buildroot.net/results/ff0/ff058a378b91740b5b399f32a6b375fbc3c8df06/

> 

> Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>

> ---

>  package/libmicrohttpd/0001-pthread-reentrant.patch | 31 ++++++++++++++++++++++

>  1 file changed, 31 insertions(+)

>  create mode 100644 package/libmicrohttpd/0001-pthread-reentrant.patch

> 

> diff --git a/package/libmicrohttpd/0001-pthread-reentrant.patch b/package/libmicrohttpd/0001-pthread-reentrant.patch

> new file mode 100644

> index 0000000..4f576fa

> --- /dev/null

> +++ b/package/libmicrohttpd/0001-pthread-reentrant.patch

> @@ -0,0 +1,31 @@

> +Fix pthread detection

> +

> +The latest version bump included an update to m4/ax_pthread.m4 from

> +GNU autoconf which changed the way configure looks for pthread support.

> +

> +On Linux the macro _REENTRANT is now being searched for:

> +https://github.com/peti/autoconf-archive/commit/39683064bbccb4008f239262cb681a970bf53603#diff-851a07ee321dc42003ac94cf4a9628faR211

> +which fails at least on arc and blackfin.

> +

> +Before the autoconf update _REENTRANT was not searched on Linux:

> +https://github.com/peti/autoconf-archive/commit/39683064bbccb4008f239262cb681a970bf53603#diff-851a07ee321dc42003ac94cf4a9628faL273

> +

> +This patch removes the check for the Linux platform by patching the

> +configure script directly to avoid an autoreconf run.

> +

> +Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>

> +(Problem reported upstream:

> + https://savannah.gnu.org/patch/?8186#comment24)

> +

> +diff -uNr libmicrohttpd-0.9.50.org/configure libmicrohttpd-0.9.50/configure

> +--- libmicrohttpd-0.9.50.org/configure	2016-06-02 10:03:29.000000000 +0200

> ++++ libmicrohttpd-0.9.50/configure	2016-06-13 21:11:36.688144929 +0200

> +@@ -13761,7 +13761,7 @@

> + # correctly enabled

> + 

> + case $host_os in

> +-        darwin* | hpux* | linux* | osf* | solaris*)

> ++        darwin* | hpux* | osf* | solaris*)

> +         ax_pthread_check_macro="_REENTRANT"

> +         ;;

> + 


I applied this patch on upstream master (git-id: 55bf6034d440ccc91c7d7c914dbc040c8264b6bf). The problem with libmicrohttpd build is fixed by
this patch.

Are there any comments or remarks about the patch? 
If not, then please consider to apply it.

Tested-by: Vlad Zakharov <vzakhar@synopsys.com>

-- 
Best regards,
Vlad Zakharov <vzakhar@synopsys.com>

>>>>> "Vlad" == Vlad Zakharov <Vladislav.Zakharov@synopsys.com> writes:

Hi,

 >> +++ b/package/libmicrohttpd/0001-pthread-reentrant.patch
 >> @@ -0,0 +1,31 @@
 >> +Fix pthread detection
 >> +
 >> +The latest version bump included an update to m4/ax_pthread.m4 from
 >> +GNU autoconf which changed the way configure looks for pthread support.
 >> +
 >> +On Linux the macro _REENTRANT is now being searched for:
 >> +https://github.com/peti/autoconf-archive/commit/39683064bbccb4008f239262cb681a970bf53603#diff-851a07ee321dc42003ac94cf4a9628faR211
 >> +which fails at least on arc and blackfin.
 >> +
 >> +Before the autoconf update _REENTRANT was not searched on Linux:
 >> +https://github.com/peti/autoconf-archive/commit/39683064bbccb4008f239262cb681a970bf53603#diff-851a07ee321dc42003ac94cf4a9628faL273
 >> +
 >> +This patch removes the check for the Linux platform by patching the
 >> +configure script directly to avoid an autoreconf run.
 >> +
 >> +Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
 >> +(Problem reported upstream:
 >> + https://savannah.gnu.org/patch/?8186#comment24)
 >> +
 >> +diff -uNr libmicrohttpd-0.9.50.org/configure libmicrohttpd-0.9.50/configure
 >> +--- libmicrohttpd-0.9.50.org/configure	2016-06-02 10:03:29.000000000 +0200
 >> ++++ libmicrohttpd-0.9.50/configure	2016-06-13 21:11:36.688144929 +0200
 >> +@@ -13761,7 +13761,7 @@
 >> + # correctly enabled
 >> + 
 >> + case $host_os in
 >> +-        darwin* | hpux* | linux* | osf* | solaris*)
 >> ++        darwin* | hpux* | osf* | solaris*)
 >> +         ax_pthread_check_macro="_REENTRANT"
 >> +         ;;
 >> + 

 > I applied this patch on upstream master (git-id:
 > 55bf6034d440ccc91c7d7c914dbc040c8264b6bf). The problem with
 > libmicrohttpd build is fixed by
 > this patch.

 > Are there any comments or remarks about the patch? 

It is pretty icky to directly patch configure (E.G. what to do if we
need to autoreconf it in the future?)

The comment upstream (https://savannah.gnu.org/patch/?8186#comment25)
hints that it is rather a bug in the arc compiler. Do you know why gcc
for arc doesn't define _REENTRANT when -pthread is passed?

Hello,

On Mon, 13 Jun 2016 21:28:46 +0200, Bernd Kuhls wrote:
> Fixes
> http://autobuild.buildroot.net/results/593/593b5050473a83a9ddcada9de39f8f14ab38d554/
> http://autobuild.buildroot.net/results/ff0/ff058a378b91740b5b399f32a6b375fbc3c8df06/
> 
> Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>

Since Peter was not too happy about your proposal, I submitted a
different one, at http://patchwork.ozlabs.org/patch/634835/, which
consists in defining _REENTRANT on Blackfin and ARC, to compensate for
the compiler bug.

Best regards,

Thomas