[05/33] incubator-impala git commit: IMPALA-3420: use gold by default

[ta...@apache.org]

IMPALA-3420: use gold by default

Also pass the flag that enables ld.gold directly to the
compiler. This is understood by both gcc and clang
(if prefixed with -Wl, clang just forwards the flag to ld,
where it is ignored).

Testing:
Did ASAN and debug private builds to validate it works.
Tested shared library, release, ninja and distcc builds locally
as part of my normal workflow.

Change-Id: Ib05c944ced9cdfe54941f4b690574e45a25110a2
Reviewed-on: http://gerrit.cloudera.org:8080/4751
Reviewed-by: Jim Apple <jb...@cloudera.com>
Tested-by: Internal Jenkins


Project: http://git-wip-us.apache.org/repos/asf/incubator-impala/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-impala/commit/f1f54fe6
Tree: http://git-wip-us.apache.org/repos/asf/incubator-impala/tree/f1f54fe6
Diff: http://git-wip-us.apache.org/repos/asf/incubator-impala/diff/f1f54fe6

Branch: refs/heads/hadoop-next
Commit: f1f54fe65db7d5af2e53b217fb7cb50abe8c50fc
Parents: 5a2c50a
Author: Tim Armstrong <ta...@cloudera.com>
Authored: Thu Oct 13 11:00:00 2016 -0700
Committer: Internal Jenkins <cl...@gerrit.cloudera.org>
Committed: Thu Oct 20 03:09:59 2016 +0000

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 be/CMakeLists.txt    | 2 +-
 bin/impala-config.sh | 5 ++---
 2 files changed, 3 insertions(+), 4 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/incubator-impala/blob/f1f54fe6/be/CMakeLists.txt
----------------------------------------------------------------------
diff --git a/be/CMakeLists.txt b/be/CMakeLists.txt
index a5cc4d8..a44834a 100644
--- a/be/CMakeLists.txt
+++ b/be/CMakeLists.txt
@@ -47,7 +47,7 @@ SET(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -DBOOST_DATE_TIME_POSIX_TIME_STD_CONFI
 SET(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -DBOOST_SYSTEM_NO_DEPRECATED")
 SET(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -B $ENV{IMPALA_TOOLCHAIN}/binutils-$ENV{IMPALA_BINUTILS_VERSION}/bin/")
 IF($ENV{USE_GOLD_LINKER} STREQUAL "true")
-  SET(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -Wl,-fuse-ld=gold")
+  SET(CXX_COMMON_FLAGS "${CXX_COMMON_FLAGS} -fuse-ld=gold")
 ENDIF()
 
 # On Apple we build with clang and need libstdc++ instead of libc++

http://git-wip-us.apache.org/repos/asf/incubator-impala/blob/f1f54fe6/bin/impala-config.sh
----------------------------------------------------------------------
diff --git a/bin/impala-config.sh b/bin/impala-config.sh
index 38bdc69..85bcbfc 100755
--- a/bin/impala-config.sh
+++ b/bin/impala-config.sh
@@ -56,9 +56,8 @@ fi
 # If it's 0, Impala will be built with the compiler in the toolchain directory.
 : ${USE_SYSTEM_GCC=0}
 
-# Gold is available on newer systems and a full build with static linking is ~1.5 mins
-# faster using gold. A shared object build using gold is a little faster than using ld.
-: ${USE_GOLD_LINKER=false}
+# Use ld.gold instead of ld by default to speed up builds.
+: ${USE_GOLD_LINKER=true}
 
 # Override the default compiler by setting a path to the new compiler. The default
 # compiler depends on USE_SYSTEM_GCC and IMPALA_GCC_VERSION. The intended use case