[oe] [meta-oe][PATCH] log4cplus: Fix build with gold linker

[Khem Raj]

Fixes a potential linker error and eventual linker crash when using gold
linker [1]

[1] https://errors.yoctoproject.org/Errors/Details/253440/

Signed-off-by: Khem Raj <raj.khem at gmail.com>
Cc: Adrian Bunk <bunk at stusta.de>
Cc: Mingli Yu <mingli.yu at windriver.com>
---
 ...-version-entry-from-ELF-.comment-sec.patch | 40 +++++++++++++++++++
 .../log4cplus/log4cplus_2.0.4.bb              |  6 ++-
 2 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 meta-oe/recipes-devtools/log4cplus/log4cplus/0001-Remove-log4cplus-version-entry-from-ELF-.comment-sec.patch

diff --git a/meta-oe/recipes-devtools/log4cplus/log4cplus/0001-Remove-log4cplus-version-entry-from-ELF-.comment-sec.patch b/meta-oe/recipes-devtools/log4cplus/log4cplus/0001-Remove-log4cplus-version-entry-from-ELF-.comment-sec.patch
new file mode 100644
index 0000000000..44a835c35f
--- /dev/null
+++ b/meta-oe/recipes-devtools/log4cplus/log4cplus/0001-Remove-log4cplus-version-entry-from-ELF-.comment-sec.patch
@@ -0,0 +1,40 @@
+From da5338e68f146efadab7c221291ba4c949d8f12f Mon Sep 17 00:00:00 2001
+From: Vaclav Haisman <vhaisman at gmail.com>
+Date: Sun, 21 Jul 2019 23:23:16 -0700
+Subject: [PATCH] Remove log4cplus version entry from ELF .comment section
+
+Reverts
+https://github.com/log4cplus/log4cplus/commit/9cb0d4ade619da4e40628c9b95ff51de3df29f1b
+
+Upstream-Status: Backport [https://github.com/log4cplus/log4cplus/commit/7e6addc70dffd2e30e902efd18eb845c5d5dd7bb]
+
+Suggested-by: Adrian Bunk <bunk at stusta.de>
+Signed-off-by: Khem Raj <raj.khem at gmail.com>
+---
+ src/version.cxx | 12 ------------
+ 1 file changed, 12 deletions(-)
+
+diff --git a/src/version.cxx b/src/version.cxx
+index ce18212..e002de9 100644
+--- a/src/version.cxx
++++ b/src/version.cxx
+@@ -34,16 +34,4 @@ namespace log4cplus
+ unsigned const version = LOG4CPLUS_VERSION;
+ char const versionStr[] = LOG4CPLUS_VERSION_STR LOG4CPLUS_VERSION_STR_SUFFIX;
+ 
+-namespace
+-{
+-
+-#if defined (__ELF__) && (defined (__GNUC__) || defined (__clang__))
+-char const versionStrComment[]
+-    __attribute__ ((__used__, __section__ ((".comment"))))
+-    = "log4cplus " LOG4CPLUS_VERSION_STR LOG4CPLUS_VERSION_STR_SUFFIX;
+-#endif
+-
+-
+-} // namespace
+-
+ } // namespace log4cplus
+-- 
+2.22.0
+
diff --git a/meta-oe/recipes-devtools/log4cplus/log4cplus_2.0.4.bb b/meta-oe/recipes-devtools/log4cplus/log4cplus_2.0.4.bb
index d86521aba3..b396cabf3f 100644
--- a/meta-oe/recipes-devtools/log4cplus/log4cplus_2.0.4.bb
+++ b/meta-oe/recipes-devtools/log4cplus/log4cplus_2.0.4.bb
@@ -6,7 +6,9 @@ BUGTRACKER = "http://sourceforge.net/p/log4cplus/bugs/"
 LICENSE = "Apache-2.0 & BSD-2-Clause"
 LIC_FILES_CHKSUM = "file://LICENSE;md5=41e8e060c26822886b592ab4765c756b"
 
-SRC_URI = "${SOURCEFORGE_MIRROR}/project/${BPN}/${BPN}-stable/${PV}/${BP}.tar.gz"
+SRC_URI = "${SOURCEFORGE_MIRROR}/project/${BPN}/${BPN}-stable/${PV}/${BP}.tar.gz \
+           file://0001-Remove-log4cplus-version-entry-from-ELF-.comment-sec.patch \
+          "
 SRC_URI[md5sum] = "2b5b7bc294698bf30a315a259ef9eec2"
 SRC_URI[sha256sum] = "196eedbc7f2dd792dae721b1159c7ac132255bb368226353c24d4d5fa7c7797a"
 
@@ -16,3 +18,5 @@ UPSTREAM_CHECK_REGEX = "log4cplus-stable/(?P<pver>\d+(\.\d+)+)/"
 inherit autotools pkgconfig
 
 BBCLASSEXTEND = "native"
+
+CXXFLAGS += "-fuse-ld=gold"
-- 
2.22.0