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From t...@apache.org
Subject svn commit: r1371508 - in /hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common: CHANGES.txt src/CMakeLists.txt src/JNIFlags.cmake
Date Thu, 09 Aug 2012 21:58:29 GMT
Author: todd
Date: Thu Aug  9 21:58:29 2012
New Revision: 1371508

URL: http://svn.apache.org/viewvc?rev=1371508&view=rev
Log:
HADOOP-8659. Native libraries must build with soft-float ABI for Oracle JVM on ARM. Contributed
by Trevor Robinson.

Added:
    hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/JNIFlags.cmake
Modified:
    hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt
    hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/CMakeLists.txt

Modified: hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt?rev=1371508&r1=1371507&r2=1371508&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt (original)
+++ hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/CHANGES.txt Thu Aug
 9 21:58:29 2012
@@ -176,6 +176,9 @@ Release 2.0.1-alpha - UNRELEASED
     HADOOP-8480. The native build should honor -DskipTests.
     (Colin Patrick McCabe via eli)
 
+    HADOOP-8659. Native libraries must build with soft-float ABI for Oracle JVM
+    on ARM. (Trevor Robinson via todd)
+
   BREAKDOWN OF HDFS-3042 SUBTASKS
 
     HADOOP-8220. ZKFailoverController doesn't handle failure to become active

Modified: hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/CMakeLists.txt
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/CMakeLists.txt?rev=1371508&r1=1371507&r2=1371508&view=diff
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/CMakeLists.txt
(original)
+++ hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/CMakeLists.txt
Thu Aug  9 21:58:29 2012
@@ -21,18 +21,7 @@ cmake_minimum_required(VERSION 2.6 FATAL
 # Default to release builds
 set(CMAKE_BUILD_TYPE, Release)
 
-# If JVM_ARCH_DATA_MODEL is 32, compile all binaries as 32-bit.
-# This variable is set by maven.
-if (JVM_ARCH_DATA_MODEL EQUAL 32)
-    # force 32-bit code generation on amd64/x86_64, ppc64, sparc64
-    if (CMAKE_COMPILER_IS_GNUCC AND CMAKE_SYSTEM_PROCESSOR MATCHES ".*64")
-        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m32")
-        set(CMAKE_LD_FLAGS "${CMAKE_LD_FLAGS} -m32")
-    endif ()
-    if (CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64" OR CMAKE_SYSTEM_PROCESSOR STREQUAL "amd64")
-        set(CMAKE_SYSTEM_PROCESSOR "i686")
-    endif ()
-endif (JVM_ARCH_DATA_MODEL EQUAL 32)
+include(JNIFlags.cmake NO_POLICY_SCOPE)
 
 # Compile a library with both shared and static variants
 function(add_dual_library LIBNAME)

Added: hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/JNIFlags.cmake
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/JNIFlags.cmake?rev=1371508&view=auto
==============================================================================
--- hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/JNIFlags.cmake
(added)
+++ hadoop/common/branches/branch-2/hadoop-common-project/hadoop-common/src/JNIFlags.cmake
Thu Aug  9 21:58:29 2012
@@ -0,0 +1,65 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+cmake_minimum_required(VERSION 2.6 FATAL_ERROR)
+
+find_package(JNI REQUIRED)
+
+# If JVM_ARCH_DATA_MODEL is 32, compile all binaries as 32-bit.
+# This variable is set by maven.
+if (JVM_ARCH_DATA_MODEL EQUAL 32)
+    # Force 32-bit code generation on amd64/x86_64, ppc64, sparc64
+    if (CMAKE_COMPILER_IS_GNUCC AND CMAKE_SYSTEM_PROCESSOR MATCHES ".*64")
+        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -m32")
+        set(CMAKE_LD_FLAGS "${CMAKE_LD_FLAGS} -m32")
+    endif ()
+    if (CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64" OR CMAKE_SYSTEM_PROCESSOR STREQUAL "amd64")
+        set(CMAKE_SYSTEM_PROCESSOR "i686")
+    endif ()
+endif (JVM_ARCH_DATA_MODEL EQUAL 32)
+
+# Determine float ABI of JVM on ARM Linux
+if (CMAKE_SYSTEM_PROCESSOR MATCHES "^arm" AND CMAKE_SYSTEM_NAME STREQUAL "Linux")
+    find_program(READELF readelf)
+    if (READELF MATCHES "NOTFOUND")
+        message(WARNING "readelf not found; JVM float ABI detection disabled")
+    else (READELF MATCHES "NOTFOUND")
+        execute_process(
+            COMMAND ${READELF} -A ${JAVA_JVM_LIBRARY}
+            OUTPUT_VARIABLE JVM_ELF_ARCH
+            ERROR_QUIET)
+        if (NOT JVM_ELF_ARCH MATCHES "Tag_ABI_VFP_args: VFP registers")
+            message("Soft-float JVM detected")
+
+            # Test compilation with -mfloat-abi=softfp using an arbitrary libc function
+            # (typically fails with "fatal error: bits/predefs.h: No such file or directory"
+            # if soft-float dev libraries are not installed)
+            include(CMakePushCheckState)
+            cmake_push_check_state()
+            set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -mfloat-abi=softfp")
+            include(CheckSymbolExists)
+            check_symbol_exists(exit stdlib.h SOFTFP_AVAILABLE)
+            if (NOT SOFTFP_AVAILABLE)
+                message(FATAL_ERROR "Soft-float dev libraries required (e.g. 'apt-get install
libc6-dev-armel' on Debian/Ubuntu)")
+            endif (NOT SOFTFP_AVAILABLE)
+            cmake_pop_check_state()
+
+            set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfloat-abi=softfp")
+        endif ()
+    endif (READELF MATCHES "NOTFOUND")
+endif (CMAKE_SYSTEM_PROCESSOR MATCHES "^arm" AND CMAKE_SYSTEM_NAME STREQUAL "Linux")



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