From d720ebc2d913141cc4ea894b3cb1448691af00c9 Mon Sep 17 00:00:00 2001
From: Eli Collins <eli@apache.org>
Date: Mon, 17 Sep 2012 19:30:07 +0000
Subject: [PATCH] HADOOP-8806. libhadoop.so: dlopen should be better at
 locating libsnappy.so, etc. Contributed by Colin Patrick McCabe

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1386784 13f79535-47bb-0310-9956-ffa450edef68
---
 hadoop-common-project/hadoop-common/CHANGES.txt      |  3 +++
 .../hadoop-common/src/CMakeLists.txt                 | 12 ++++++++++++
 2 files changed, 15 insertions(+)

diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index e4864c9e80..b4bab65a5f 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -235,6 +235,9 @@ Release 2.0.3-alpha - Unreleased
     HADOOP-8755. Print thread dump when tests fail due to timeout. (Andrey
     Klochkov via atm)
 
+    HADOOP-8806. libhadoop.so: dlopen should be better at locating
+    libsnappy.so, etc. (Colin Patrick McCabe via eli)
+
   OPTIMIZATIONS
 
   BUG FIXES
diff --git a/hadoop-common-project/hadoop-common/src/CMakeLists.txt b/hadoop-common-project/hadoop-common/src/CMakeLists.txt
index 5c3d77db4c..69c52a986a 100644
--- a/hadoop-common-project/hadoop-common/src/CMakeLists.txt
+++ b/hadoop-common-project/hadoop-common/src/CMakeLists.txt
@@ -109,6 +109,7 @@ add_executable(test_bulk_crc32
 )
 set_property(SOURCE main.cpp PROPERTY INCLUDE_DIRECTORIES "\"-Werror\" \"-Wall\"")
 
+SET(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
 add_dual_library(hadoop
     ${D}/io/compress/lz4/Lz4Compressor.c
     ${D}/io/compress/lz4/Lz4Decompressor.c
@@ -125,6 +126,17 @@ add_dual_library(hadoop
     ${D}/util/NativeCrc32.c
     ${D}/util/bulk_crc32.c
 )
+
+IF (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
+    #
+    # By embedding '$ORIGIN' into the RPATH of libhadoop.so,
+    # dlopen will look in the directory containing libhadoop.so.
+    # However, $ORIGIN is not supported by all operating systems.
+    #
+    SET_TARGET_PROPERTIES(hadoop 
+        PROPERTIES INSTALL_RPATH "\$ORIGIN/")
+ENDIF()
+
 target_link_dual_libraries(hadoop
     dl
     ${JAVA_JVM_LIBRARY}