[PATCH] gstreamer: Fix reproducibility issue around libcap

[Richard Purdie <richard.purdie@linuxfoundation.org>]

Add an option to avoid builds depending on the presence of setcap
from the host system.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
 .../gstreamer/gstreamer1.0/capfix.patch       | 37 +++++++++++++++++++
 .../gstreamer/gstreamer1.0_1.16.1.bb          |  2 +
 2 files changed, 39 insertions(+)
 create mode 100644 meta/recipes-multimedia/gstreamer/gstreamer1.0/capfix.patch

diff --git a/meta/recipes-multimedia/gstreamer/gstreamer1.0/capfix.patch b/meta/recipes-multimedia/gstreamer/gstreamer1.0/capfix.patch
new file mode 100644
index 00000000000..7ca3d5ad4a6
--- /dev/null
+++ b/meta/recipes-multimedia/gstreamer/gstreamer1.0/capfix.patch
@@ -0,0 +1,37 @@
+Currently gstreamer configuration depends on whether setcap is found on the host
+system. Turn this into a configure option to make builds deterinistic.
+
+RP 2020/2/19
+Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
+Upstream-Status: Pending
+
+Index: gstreamer-1.16.1/libs/gst/helpers/meson.build
+===================================================================
+--- gstreamer-1.16.1.orig/libs/gst/helpers/meson.build
++++ gstreamer-1.16.1/libs/gst/helpers/meson.build
+@@ -73,7 +73,12 @@ if have_ptp
+     endif
+   endif
+ 
+-  setcap = find_program('setcap', '/usr/sbin/setcap', '/sbin/setcap', required : false)
++  setcap_feature = get_option('setcap')
++  if setcap_feature.disabled()
++    setcap = find_program('dontexist', required : false)
++  else
++    setcap = find_program('setcap', '/usr/sbin/setcap', '/sbin/setcap', required : false)
++  endif
+ 
+   # user/group to change to in gst-ptp-helper
+   ptp_helper_setuid_user = get_option('ptp-helper-setuid-user')
+Index: gstreamer-1.16.1/meson_options.txt
+===================================================================
+--- gstreamer-1.16.1.orig/meson_options.txt
++++ gstreamer-1.16.1/meson_options.txt
+@@ -26,6 +26,7 @@ option('libunwind', type : 'feature', va
+ option('libdw', type : 'feature', value : 'auto', description : 'Use libdw to generate better backtraces from libunwind')
+ option('dbghelp', type : 'feature', value : 'auto', description : 'Use dbghelp to generate backtraces')
+ option('bash-completion', type : 'feature', value : 'auto', description : 'Install bash completion files')
++option('setcap', type : 'feature', value : 'auto', description : 'Use setcap')
+ 
+ # Common feature options
+ option('examples', type : 'feature', value : 'auto', yield : true)
diff --git a/meta/recipes-multimedia/gstreamer/gstreamer1.0_1.16.1.bb b/meta/recipes-multimedia/gstreamer/gstreamer1.0_1.16.1.bb
index 6b8a5a0eb01..68f5ca649fe 100644
--- a/meta/recipes-multimedia/gstreamer/gstreamer1.0_1.16.1.bb
+++ b/meta/recipes-multimedia/gstreamer/gstreamer1.0_1.16.1.bb
@@ -21,6 +21,7 @@ SRC_URI = " \
     file://0002-meson-build-gir-even-when-cross-compiling-if-introsp.patch \
     file://0003-meson-Add-valgrind-feature.patch \
     file://0004-meson-Add-option-for-installed-tests.patch \
+    file://capfix.patch \
 "
 SRC_URI[md5sum] = "c505fb818b36988daaa846e9e63eabe8"
 SRC_URI[sha256sum] = "02211c3447c4daa55919c5c0f43a82a6fbb51740d57fc3af0639d46f1cf4377d"
@@ -39,6 +40,7 @@ PACKAGECONFIG[unwind] = "-Dlibunwind=enabled,-Dlibunwind=disabled,libunwind"
 PACKAGECONFIG[dw] = "-Dlibdw=enabled,-Dlibdw=disabled,elfutils"
 PACKAGECONFIG[bash-completion] = "-Dbash-completion=enabled,-Dbash-completion=disabled,bash-completion"
 PACKAGECONFIG[tools] = "-Dtools=enabled,-Dtools=disabled"
+PACKAGECONFIG[setcap] = "-Dsetcap=enabled,-Dsetcap=disabled,libcap"
 
 # TODO: put this in a gettext.bbclass patch
 def gettext_oemeson(d):
-- 
2.25.0