[PATCH 2/2] systemtap: fix native linking on recent Ubuntu

[Ross Burton <ross.burton@intel.com>]

The latest Ubuntu uses yet more aggressive hardening options, which causes the
unconventional build order used by systemtap to fail.

[ YOCTO #10521 ]

Signed-off-by: Ross Burton <ross.burton@intel.com>
---
 .../systemtap/systemtap/fix-monitor-linking.patch  | 41 ++++++++++++++++++++++
 meta/recipes-kernel/systemtap/systemtap_git.inc    |  1 +
 2 files changed, 42 insertions(+)
 create mode 100644 meta/recipes-kernel/systemtap/systemtap/fix-monitor-linking.patch

diff --git a/meta/recipes-kernel/systemtap/systemtap/fix-monitor-linking.patch b/meta/recipes-kernel/systemtap/systemtap/fix-monitor-linking.patch
new file mode 100644
index 0000000..2bf0742a1
--- /dev/null
+++ b/meta/recipes-kernel/systemtap/systemtap/fix-monitor-linking.patch
@@ -0,0 +1,41 @@
+Upstream-Status: Submitted
+Signed-off-by: Ross Burton <ross.burton@intel.com>
+
+From d940aa0079c253b958cf9158e9ec7922ecf464f9 Mon Sep 17 00:00:00 2001
+From: Ross Burton <ross.burton@intel.com>
+Date: Wed, 9 Nov 2016 00:00:48 +0000
+Subject: [PATCH] staprun: fix linking if monitor is enabled
+
+If the monitor is enabled, monitor.c needs to link against json-c and ncurses.
+Instead of adding these linker flags to AM_CFLAGS (global CC flags) add them to
+stapio_LDADD.
+
+Apart from being the "right" thing to do, this fixes build failures on systems
+such as current Ubuntu (which defaults to using --as-needed and similar) where
+link order is important.
+---
+ staprun/Makefile.am | 7 +++----
+ 1 file changed, 3 insertions(+), 4 deletions(-)
+
+diff --git a/staprun/Makefile.am b/staprun/Makefile.am
+index 63d4088..66b3e21 100644
+--- a/staprun/Makefile.am
++++ b/staprun/Makefile.am
+@@ -42,12 +42,11 @@ staprun_CXXFLAGS += $(nss_CFLAGS)
+ staprun_LDADD += $(nss_LIBS)
+ endif
+ 
+-if HAVE_MONITOR_LIBS
+-AM_CFLAGS += $(jsonc_LIBS) $(ncurses_LIBS)
+-endif
+-
+ stapio_SOURCES = stapio.c mainloop.c common.c ctl.c relay.c relay_old.c monitor.c
+ stapio_LDADD = libstrfloctime.a -lpthread
++if HAVE_MONITOR_LIBS
++stapio_LDADD += $(jsonc_LIBS) $(ncurses_LIBS)
++endif
+ 
+ man_MANS = staprun.8
+ 
+-- 
+2.8.1
diff --git a/meta/recipes-kernel/systemtap/systemtap_git.inc b/meta/recipes-kernel/systemtap/systemtap_git.inc
index 34cf227..a0f0e68 100644
--- a/meta/recipes-kernel/systemtap/systemtap_git.inc
+++ b/meta/recipes-kernel/systemtap/systemtap_git.inc
@@ -10,6 +10,7 @@ SRC_URI = "git://sourceware.org/git/systemtap.git \
            file://x32_abi_time.patch \
            file://monitor-option.patch \
            file://no-msgfmt-check.patch \
+           file://fix-monitor-linking.patch \
           "
 
 # systemtap doesn't support mips
-- 
2.8.1