[oe] [meta-oe][PATCH] mariadb: fix library LZ4 lookup

[Sumit Garg]

While cross-compiling mariadb package it tries to link lz4 library
present in the target sysroot and if not found it tries to link host
lz4 library which is incorrect leading to linker errors. So fix that
via restricting lz4 library lookup to target sysroot only.

Signed-off-by: Sumit Garg <sumit.garg at linaro.org>
---
 meta-oe/recipes-dbs/mysql/mariadb.inc              |  1 +
 .../mariadb/0001-Fix-library-LZ4-lookup.patch      | 30 ++++++++++++++++++++++
 2 files changed, 31 insertions(+)
 create mode 100644 meta-oe/recipes-dbs/mysql/mariadb/0001-Fix-library-LZ4-lookup.patch

diff --git a/meta-oe/recipes-dbs/mysql/mariadb.inc b/meta-oe/recipes-dbs/mysql/mariadb.inc
index 1c1b8a0..23de69d 100644
--- a/meta-oe/recipes-dbs/mysql/mariadb.inc
+++ b/meta-oe/recipes-dbs/mysql/mariadb.inc
@@ -19,6 +19,7 @@ SRC_URI = "https://downloads.mariadb.org/interstitial/${BP}/source/${BP}.tar.gz
            file://clang_version_header_conflict.patch \
            file://fix-arm-atomic.patch \
            file://0001-Fix-build-breakage-from-lock_guard-error-6161.patch \
+           file://0001-Fix-library-LZ4-lookup.patch \
           "
 SRC_URI[md5sum] = "d0de881ab8ead46928cafb7d558535c1"
 SRC_URI[sha256sum] = "4c076232b99433b09eb3c6d62f607192b3474d022703699b8f6aef4e79de3fb9"
diff --git a/meta-oe/recipes-dbs/mysql/mariadb/0001-Fix-library-LZ4-lookup.patch b/meta-oe/recipes-dbs/mysql/mariadb/0001-Fix-library-LZ4-lookup.patch
new file mode 100644
index 0000000..574dfd3
--- /dev/null
+++ b/meta-oe/recipes-dbs/mysql/mariadb/0001-Fix-library-LZ4-lookup.patch
@@ -0,0 +1,30 @@
+From 1d7612b063eb1fc7bf97bc27b13e1de596748aa1 Mon Sep 17 00:00:00 2001
+From: Sumit Garg <sumit.garg at linaro.org>
+Date: Wed, 8 Jan 2020 04:58:30 +0000
+Subject: [PATCH] Fix library LZ4 lookup.
+
+Signed-off-by: Sumit Garg <sumit.garg at linaro.org>
+---
+ cmake/FindLZ4.cmake | 9 +++++++--
+ 1 file changed, 7 insertions(+), 2 deletions(-)
+
+diff --git a/cmake/FindLZ4.cmake b/cmake/FindLZ4.cmake
+index e97dd63e2b0..2f4694e727c 100644
+--- a/cmake/FindLZ4.cmake
++++ b/cmake/FindLZ4.cmake
+@@ -1,5 +1,10 @@
+-find_path(LZ4_INCLUDE_DIR NAMES lz4.h)
+-find_library(LZ4_LIBRARY NAMES lz4)
++find_path(LZ4_INCLUDE_DIR
++  NAMES	lz4.h
++  NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH)
++
++find_library(LZ4_LIBRARY
++  NAMES lz4
++  NO_DEFAULT_PATH NO_CMAKE_FIND_ROOT_PATH)
+ 
+ include(FindPackageHandleStandardArgs)
+ FIND_PACKAGE_HANDLE_STANDARD_ARGS(
+-- 
+2.17.1
+
-- 
2.7.4