3 files changed, 60 insertions, 2 deletions

diff --git a/meta/recipes-graphics/xorg-lib/files/libx11-whitespace.patch b/meta/recipes-graphics/xorg-lib/files/libx11-whitespace.patch
new file mode 100644
index 0000000000..3f97143082
--- /dev/null
+++ b/meta/recipes-graphics/xorg-lib/files/libx11-whitespace.patch
@@ -0,0 +1,56 @@
+Upstream-Status: Submitted [https://gitlab.freedesktop.org/xorg/lib/libx11/merge_requests/33]
+Signed-off-by: Ross Burton <ross.burton@intel.com>
+
+From b41469c5f08b1f3365667ff3c430b104c9b8e25f Mon Sep 17 00:00:00 2001
+From: Ross Burton <ross.burton@intel.com>
+Date: Wed, 22 Jan 2020 17:11:23 +0000
+Subject: [PATCH libX11] cpprules.in: squash whitespace in generated files
+
+CPP is used to generate files, but as cpp reads files from the build host the
+output has a number of blank lines at the beginning which varies depending on
+what GCC and friends is used.
+
+Pathalogical example:
+
+ $ cpp -undef -traditional /dev/null
+ # 1 "/dev/null"
+ # 1 "<built-in>"
+ # 1 "<command-line>"
+ # 31 "<command-line>"
+ # 1 "/usr/include/stdc-predef.h" 1 3 4
+
+ # 17 "/usr/include/stdc-predef.h" 3 4
+
+ [ 40 blank line ]
+
+ # 32 "<command-line>" 2
+ # 1 "/dev/null"
+
+So depending on the content of stdc-predef.h and what other headers CPP will
+load, the amount of whitespace in the generates files varies. This can result in
+differences in reproducible environments, and file conflicts in multilib
+environments.
+
+As whitespace is irrelevant to these machine-readable files, extend the sed to
+just delete blank lines.
+---
+ cpprules.in | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/cpprules.in b/cpprules.in
+index 03d6701e..ce6b3c98 100644
+--- a/cpprules.in
++++ b/cpprules.in
+@@ -23,7 +23,8 @@ CPP_SED_MAGIC = $(SED) -e '/^\#  *[0-9][0-9]*  *.*$$/d' \
+                        -e '/^[  ]*XCOMM[^a-zA-Z0-9_]/s/XCOMM/\#/' \
+                        -e '/^[  ]*XHASH/s/XHASH/\#/' \
+                        -e 's,X11_LOCALEDATADIR,$(X11_LOCALEDATADIR),g' \
+-                       -e '/\@\@$$/s/\@\@$$/\\/'
++                       -e '/\@\@$$/s/\@\@$$/\\/' \
++                       -e '/^$$/d'
+ 
+ .pre:
+        @$(MKDIR_P) $(@D)
+-- 
+2.20.1
+
diff --git a/meta/recipes-graphics/xorg-lib/libx11-compose-data_1.6.8.bb b/meta/recipes-graphics/xorg-lib/libx11-compose-data_1.6.8.bb
index cabb84e686..3d97ad78d2 100644
--- a/meta/recipes-graphics/xorg-lib/libx11-compose-data_1.6.8.bb
+++ b/meta/recipes-graphics/xorg-lib/libx11-compose-data_1.6.8.bb
@@ -14,7 +14,8 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=172255dee66bb0151435b2d5d709fcf7"
 SRC_URI[md5sum] = "c5fa5a86a20e3591bed6c046498d4b8f"
 SRC_URI[sha256sum] = "b289a845c189e251e0e884cc0f9269bbe97c238df3741e854ec4c17c21e473d5"
 
-SRC_URI += "file://0001-Drop-x11-dependencies.patch"
+SRC_URI += "file://0001-Drop-x11-dependencies.patch \
+            file://libx11-whitespace.patch"
 
 XORG_PN = "libX11"
 
diff --git a/meta/recipes-graphics/xorg-lib/libx11_1.6.9.bb b/meta/recipes-graphics/xorg-lib/libx11_1.6.9.bb
index 8c2a57c674..ff60a4240c 100644
--- a/meta/recipes-graphics/xorg-lib/libx11_1.6.9.bb
+++ b/meta/recipes-graphics/xorg-lib/libx11_1.6.9.bb
@@ -11,7 +11,8 @@ FILESEXTRAPATHS =. "${FILE_DIRNAME}/libx11:"
 PE = "1"
 
 SRC_URI += "file://Fix-hanging-issue-in-_XReply.patch \
-            file://disable_tests.patch"
+            file://disable_tests.patch \
+            file://libx11-whitespace.patch"
 
 SRC_URI[md5sum] = "55adbfb6d4370ecac5e70598c4e7eed2"
 SRC_URI[sha256sum] = "9cc7e8d000d6193fa5af580d50d689380b8287052270f5bb26a5fb6b58b2bed1"