libbsd: add patch for clock_gettime usage
libbsd uses clock_gettime() but doesn't check for it in librt. This causes breakage on old glibc versions (< 2.17). Fixes: http://autobuild.buildroot.net/results/a5b/a5b837d6d02ec96ac53c5b1c531a0c8e7eafeb9a/ Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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@ -0,0 +1,49 @@
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From 188049ac7adcabfa66e5b6a674ac28a2f7da81f3 Mon Sep 17 00:00:00 2001
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From: Gustavo Zacarias <gustavo@zacarias.com.ar>
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Date: Fri, 12 Feb 2016 11:06:58 -0300
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Subject: [PATCH] build: clock_gettime might need librt
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In older glibc versions (< 2.17) clock_gettime is in librt.
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Add a check for this to avoid build breakage for programs/libraries that
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use libbsd on such systems.
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Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
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---
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Patch status: submitted upstream
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configure.ac | 5 +++++
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src/Makefile.am | 2 ++
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2 files changed, 7 insertions(+)
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diff --git a/configure.ac b/configure.ac
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index d334774..1862d19 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -44,6 +44,11 @@ AC_SUBST([TESTU01_LIBS])
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AM_CONDITIONAL([HAVE_LIBTESTU01],
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[test "x$ac_cv_lib_testu01_unif01_CreateExternGenBits" = "xyes"])
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+# In old glibc versions (< 2.17) clock_gettime() is in librt
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+AC_SEARCH_LIBS([clock_gettime], [rt],
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+ [LIB_CLOCK_GETTIME="-lrt"])
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+AC_SUBST([LIB_CLOCK_GETTIME])
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+
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# Checks for header files.
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AC_CHECK_HEADERS([sys/ndir.h sys/dir.h ndir.h dirent.h])
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diff --git a/src/Makefile.am b/src/Makefile.am
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index 4649937..6b705f0 100644
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--- a/src/Makefile.am
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+++ b/src/Makefile.am
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@@ -52,6 +52,8 @@ hash/md5hl.c: $(srcdir)/hash/helper.c
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libbsd_la_DEPENDENCIES = \
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$(libbsd_la_included_sources) \
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libbsd.map
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+libbsd_la_LIBADD = \
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+ $(LIB_CLOCK_GETTIME)
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libbsd_la_LDFLAGS = \
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-Wl,--version-script=$(srcdir)/libbsd.map \
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-version-number $(LIBBSD_ABI)
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--
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2.4.10
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@ -9,7 +9,8 @@ LIBBSD_SOURCE = libbsd-$(LIBBSD_VERSION).tar.xz
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LIBBSD_SITE = http://libbsd.freedesktop.org/releases
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LIBBSD_LICENSE = BSD-3c, MIT
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LIBBSD_LICENSE_FILES = COPYING
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LIBBSD_INSTALL_STAGING = YES
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# For 0001-build-clock_gettime-might-need-librt.patch
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LIBBSD_AUTORECONF = YES
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$(eval $(autotools-package))
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