Fix native build for hadoop

Author: James Page

hadoop-common-project/hadoop-common/src/main/native/acinclude.m4

@@ -7,7 +7,7 @@ AC_DEFUN([AC_COMPUTE_NEEDED_DSO],
 AC_CACHE_CHECK([Checking for the 'actual' dynamic-library for '-l$1'], ac_cv_libname_$1,
   [
   echo 'int main(int argc, char **argv){return 0;}' > conftest.c
-  if test -z "`${CC} ${LDFLAGS} -o conftest conftest.c -l$1 2>&1`"; then
+  if test -z "`${CC} ${LDFLAGS} -o conftest conftest.c ${DSO_LDFLAGS} -l$1 2>&1`"; then
     dnl Try objdump and ldd in that order to get the dynamic library
     if test ! -z "`which objdump | grep -v 'no objdump'`"; then
       ac_cv_libname_$1="`objdump -p conftest | grep NEEDED | grep $1 | sed 's/\W*NEEDED\W*\(.*\)\W*$/\"\1\"/'`"

hadoop-common-project/hadoop-common/src/main/native/configure.ac

@@ -84,6 +84,9 @@ AC_CHECK_HEADERS([jni.h], [], AC_MSG_ERROR([Native java headers not found. Is \$
 CPPFLAGS=$cppflags_bak
 AC_SUBST([JNI_CPPFLAGS])
 
+dnl Setup linker flags for computing required DSO's
+DSO_LDFLAGS="-Wl,--no-as-needed"
+
 dnl Check for zlib headers
 AC_CHECK_HEADERS([zlib.h zconf.h], AC_COMPUTE_NEEDED_DSO(z,HADOOP_ZLIB_LIBRARY), AC_MSG_ERROR(Zlib headers were not found... native-hadoop library needs zlib to build. Please install the requisite zlib development package.))