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libmicrohttpd: fix thread detection on ARC and Blackfin

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Due to compiler deficiences, gcc on ARC and Blackfin doesn't define
_REENTRANT, which the latest version of the ax_pthread.m4
autoconf-archive macros looks at to determine whether thread support is
available or not.

Fixing the compilers is definitely the right thing to do, but it's not
doable for pre-built external toolchains like the Blackfin one, so for
now, we simply define _REENTRANT manually on ARC and Blackfin. If more
packages are affected by this problem, a more general solution will have
to be found.

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

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Thomas Petazzoni 2016-07-04 01:09:43 +02:00
parent 0639d15d3a
commit 72350212d6
1 changed files with 11 additions and 1 deletions
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12
package/libmicrohttpd/libmicrohttpd.mk
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@ -9,7 +9,17 @@ LIBMICROHTTPD_SITE = $(BR2_GNU_MIRROR)/libmicrohttpd
LIBMICROHTTPD_LICENSE_FILES = COPYING
LIBMICROHTTPD_INSTALL_STAGING = YES
LIBMICROHTTPD_CONF_OPTS = --disable-curl --disable-examples
LIBMICROHTTPD_CONF_ENV += CFLAGS="$(TARGET_CFLAGS) -std=c99"
LIBMICROHTTPD_CFLAGS = $(TARGET_CFLAGS) -std=c99
# gcc on arc and bfin doesn't define _REENTRANT when -pthread is
# passed while it should. Compensate this defiency here otherwise
# libmicrohttpd configure script doesn't find that thread support is
# enabled.
ifeq ($(BR2_arc)$(BR2_bfin),y)
LIBMICROHTTPD_CFLAGS += -D_REENTRANT
endif
LIBMICROHTTPD_CONF_ENV += CFLAGS="$(LIBMICROHTTPD_CFLAGS)"
ifeq ($(BR2_PACKAGE_LIBMICROHTTPD_SSL),y)
LIBMICROHTTPD_LICENSE = LGPLv2.1+