8024265: Enable new build on AIX

Reviewed-by: ihse

common/autoconf/build-aux/config.guess

@@ -60,4 +60,20 @@ if test $? = 0; then
   esac
 fi  
 
+# Test and fix architecture string on AIX
+# On AIX 'config.guess' returns 'powerpc' as architecture but 'powerpc' is
+# implicitely handled as 32-bit architecture in 'platform.m4' so we check
+# for the kernel mode rewrite it to 'powerpc64' if we'Re running in 64-bit mode.
+# The check could also be done with `/usr/sbin/prtconf | grep "Kernel Type" | grep "64-bit"`
+echo $OUT | grep powerpc-ibm-aix > /dev/null 2> /dev/null
+if test $? = 0; then
+  if [ -x /bin/getconf ] ; then
+    KERNEL_BITMODE=`getconf KERNEL_BITMODE`
+    if  [ "$KERNEL_BITMODE" = "32" ]; then
+      KERNEL_BITMODE=""
+    fi
+  fi
+  OUT=powerpc$KERNEL_BITMODE`echo $OUT | sed -e 's/[^-]*//'`
+fi
+
 echo $OUT

common/autoconf/build-performance.m4

@@ -41,6 +41,9 @@ AC_DEFUN([BPERF_CHECK_CORES],
         # Looks like a MacOSX system
         NUM_CORES=`/usr/sbin/system_profiler -detailLevel full SPHardwareDataType | grep 'Cores' | awk  '{print [$]5}'`
         FOUND_CORES=yes
+    elif test "x$OPENJDK_BUILD_OS" = xaix ; then
+        NUM_CORES=`/usr/sbin/prtconf | grep "^Number Of Processors" | awk '{ print [$]4 }'`
+        FOUND_CORES=yes
     elif test -n "$NUMBER_OF_PROCESSORS"; then
         # On windows, look in the env
         NUM_CORES=$NUMBER_OF_PROCESSORS
@@ -69,8 +72,8 @@ AC_DEFUN([BPERF_CHECK_MEMORY_SIZE],
         MEMORY_SIZE=`expr $MEMORY_SIZE / 1024`
         FOUND_MEM=yes
     elif test -x /usr/sbin/prtconf; then
-        # Looks like a Solaris system
-        MEMORY_SIZE=`/usr/sbin/prtconf | grep "Memory size" | awk '{ print [$]3 }'`
+        # Looks like a Solaris or AIX system
+        MEMORY_SIZE=`/usr/sbin/prtconf | grep "^Memory [[Ss]]ize" | awk '{ print [$]3 }'`
         FOUND_MEM=yes
     elif test -x /usr/sbin/system_profiler; then
         # Looks like a MacOSX system

common/autoconf/help.m4

@@ -46,8 +46,6 @@ AC_DEFUN([HELP_MSG_MISSING_DEPENDENCY],
                 pkgutil_help $MISSING_DEPENDENCY ;;
 	pkgadd)
                 pkgadd_help  $MISSING_DEPENDENCY ;;
-    * )
-      break ;;
     esac
 
     if test "x$PKGHANDLER_COMMAND" != x; then
@@ -63,8 +61,6 @@ cygwin_help() {
         PKGHANDLER_COMMAND="cd <location of cygwin setup.exe> && cmd /c setup -q -P zip" ;;
     make)
         PKGHANDLER_COMMAND="cd <location of cygwin setup.exe> && cmd /c setup -q -P make" ;;
-    * )
-       break ;;
     esac
 }
 
@@ -86,8 +82,6 @@ apt_help() {
         PKGHANDLER_COMMAND="sudo apt-get install libX11-dev libxext-dev libxrender-dev libxtst-dev libxt-dev" ;;
     ccache)
         PKGHANDLER_COMMAND="sudo apt-get install ccache" ;;
-    * )
-       break ;;
     esac
 }
 
@@ -109,8 +103,6 @@ yum_help() {
         PKGHANDLER_COMMAND="sudo yum install libXtst-devel libXt-devel libXrender-devel" ;;
     ccache)
         PKGHANDLER_COMMAND="sudo yum install ccache" ;;
-    * )
-       break ;;
     esac
 }
 

common/autoconf/libraries.m4

@@ -43,6 +43,14 @@ if test "x$OPENJDK_TARGET_OS" = xsolaris; then
     AC_MSG_RESULT([alsa pulse])
 fi
 
+if test "x$OPENJDK_TARGET_OS" = xaix; then
+    AC_MSG_CHECKING([what is not needed on AIX?])
+    ALSA_NOT_NEEDED=yes
+    PULSE_NOT_NEEDED=yes
+    AC_MSG_RESULT([alsa pulse])
+fi
+
+
 if test "x$OPENJDK_TARGET_OS" = xwindows; then
     AC_MSG_CHECKING([what is not needed on Windows?])
     CUPS_NOT_NEEDED=yes    

common/autoconf/platform.m4

@@ -114,6 +114,11 @@ AC_DEFUN([PLATFORM_EXTRACT_VARS_FROM_OS],
       VAR_OS_API=winapi
       VAR_OS_ENV=windows.msys
       ;;
+    *aix*)
+      VAR_OS=aix
+      VAR_OS_API=posix
+      VAR_OS_ENV=aix
+      ;;
     *)
       AC_MSG_ERROR([unsupported operating system $1])
       ;;
@@ -412,16 +417,17 @@ AC_DEFUN([PLATFORM_SET_COMPILER_TARGET_BITS_FLAGS],
 [
   # keep track of c/cxx flags that we added outselves...
   #   to prevent emitting warning...
-  TARGET_BITS_FLAG="-m${OPENJDK_TARGET_CPU_BITS}"
-  AC_SUBST(TARGET_BITS_FLAG)
+  ADDED_CFLAGS=" ${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}"
+  ADDED_CXXFLAGS=" ${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}"
+  ADDED_LDFLAGS=" ${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}"
 
-  CFLAGS="${CFLAGS} ${TARGET_BITS_FLAG}"
-  CXXFLAGS="${CXXFLAGS} ${TARGET_BITS_FLAG}"
-  LDFLAGS="${LDFLAGS} ${TARGET_BITS_FLAG}"
+  CFLAGS="${CFLAGS}${ADDED_CFLAGS}"
+  CXXFLAGS="${CXXFLAGS}${ADDED_CXXFLAGS}"
+  LDFLAGS="${LDFLAGS}${ADDED_LDFLAGS}"
 
-  CFLAGS_JDK="${CFLAGS_JDK} ${TARGET_BITS_FLAG}"
-  CXXFLAGS_JDK="${CXXFLAGS_JDK} ${TARGET_BITS_FLAG}"
-  LDFLAGS_JDK="${LDFLAGS_JDK} ${TARGET_BITS_FLAG}"
+  CFLAGS_JDK="${CFLAGS_JDK}${ADDED_CFLAGS}"
+  CXXFLAGS_JDK="${CXXFLAGS_JDK}${ADDED_CXXFLAGS}"
+  LDFLAGS_JDK="${LDFLAGS_JDK}${ADDED_LDFLAGS}"
 ])
 
 AC_DEFUN_ONCE([PLATFORM_SETUP_OPENJDK_TARGET_BITS],
@@ -433,8 +439,9 @@ AC_DEFUN_ONCE([PLATFORM_SETUP_OPENJDK_TARGET_BITS],
 # is made at runtime.)
 #
 
-if test "x$OPENJDK_TARGET_OS" = xsolaris; then
-  # Always specify -m flags on Solaris
+if test "x$OPENJDK_TARGET_OS" = xsolaris || test "x$OPENJDK_TARGET_OS" = xaix; then
+  # Always specify -m flag on Solaris
+  # And -q on AIX because otherwise the compiler produces 32-bit objects by default
   PLATFORM_SET_COMPILER_TARGET_BITS_FLAGS
 elif test "x$COMPILE_TYPE" = xreduced; then
   if test "x$OPENJDK_TARGET_OS" != xwindows; then
@@ -456,20 +463,35 @@ AC_CHECK_HEADERS([stdio.h], , [
 
 AC_CHECK_SIZEOF([int *], [1111])
 
-if test "x$SIZEOF_INT_P" != "x$ac_cv_sizeof_int_p"; then
-  # Workaround autoconf bug, see http://lists.gnu.org/archive/html/autoconf/2010-07/msg00004.html
-  SIZEOF_INT_P="$ac_cv_sizeof_int_p"
-fi
-
-if test "x$SIZEOF_INT_P" = x; then 
+# AC_CHECK_SIZEOF defines 'ac_cv_sizeof_int_p' to hold the number of bytes used by an 'int*'
+if test "x$ac_cv_sizeof_int_p" = x; then
     # The test failed, lets stick to the assumed value.
     AC_MSG_WARN([The number of bits in the target could not be determined, using $OPENJDK_TARGET_CPU_BITS.])
 else
-    TESTED_TARGET_CPU_BITS=`expr 8 \* $SIZEOF_INT_P`
+    TESTED_TARGET_CPU_BITS=`expr 8 \* $ac_cv_sizeof_int_p`
+
+    if test "x$TESTED_TARGET_CPU_BITS" != "x$OPENJDK_TARGET_CPU_BITS"; then
+        # This situation may happen on 64-bit platforms where the compiler by default only generates 32-bit objects
+        # Let's try to implicitely set the compilers target architecture and retry the test
+        AC_MSG_NOTICE([The tested number of bits in the target ($TESTED_TARGET_CPU_BITS) differs from the number of bits expected to be found in the target ($OPENJDK_TARGET_CPU_BITS).])
+        AC_MSG_NOTICE([I'll retry after setting the platforms compiler target bits flag to ${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}])
+        PLATFORM_SET_COMPILER_TARGET_BITS_FLAGS
+
+        # We have to unset 'ac_cv_sizeof_int_p' first, otherwise AC_CHECK_SIZEOF will use the previously cached value!
+        unset ac_cv_sizeof_int_p
+	# And we have to undef the definition of SIZEOF_INT_P in confdefs.h by the previous invocation of AC_CHECK_SIZEOF
+	cat >>confdefs.h <<_ACEOF
+#undef SIZEOF_INT_P
+_ACEOF
+
+        AC_CHECK_SIZEOF([int *], [1111])
+
+        TESTED_TARGET_CPU_BITS=`expr 8 \* $ac_cv_sizeof_int_p`
 
         if test "x$TESTED_TARGET_CPU_BITS" != "x$OPENJDK_TARGET_CPU_BITS"; then
             AC_MSG_ERROR([The tested number of bits in the target ($TESTED_TARGET_CPU_BITS) differs from the number of bits expected to be found in the target ($OPENJDK_TARGET_CPU_BITS)])
         fi
+    fi
 fi
 
 AC_MSG_CHECKING([for target address size])

common/autoconf/spec.gmk.in

@@ -305,7 +305,8 @@ MACOSX_VERSION_MIN=@MACOSX_VERSION_MIN@
 COMPILER_TYPE:=@COMPILER_TYPE@
 COMPILER_NAME:=@COMPILER_NAME@
 
-TARGET_BITS_FLAG=@TARGET_BITS_FLAG@
+# Option used to tell the compiler whether to create 32- or 64-bit executables
+COMPILER_TARGET_BITS_FLAG:=@COMPILER_TARGET_BITS_FLAG@
 COMPILER_SUPPORTS_TARGET_BITS_FLAG=@COMPILER_SUPPORTS_TARGET_BITS_FLAG@
 
 CC_OUT_OPTION:=@CC_OUT_OPTION@

common/autoconf/toolchain.m4

@@ -44,6 +44,15 @@ AC_DEFUN([TOOLCHAIN_CHECK_COMPILER_VERSION],
       COMPILER_VERSION=`$ECHO $COMPILER_VERSION_TEST | $SED -n "s/^.*@<:@ ,\t@:>@$COMPILER_NAME@<:@ ,\t@:>@\(@<:@1-9@:>@\.@<:@0-9@:>@@<:@0-9@:>@*\).*/\1/p"`
       COMPILER_VENDOR="Sun Studio"
     fi
+  elif test  "x$OPENJDK_TARGET_OS" = xaix; then
+      COMPILER_VERSION_TEST=`$COMPILER -qversion  2>&1 | $TAIL -n 1`
+      $ECHO $COMPILER_VERSION_TEST | $GREP "^Version: " > /dev/null
+      if test $? -ne 0; then
+        AC_MSG_ERROR([Failed to detect the compiler version of $COMPILER ....])
+      else
+        COMPILER_VERSION=`$ECHO $COMPILER_VERSION_TEST | $SED -n 's/Version: \([0-9][0-9]\.[0-9][0-9]*\).*/\1/p'`
+        COMPILER_VENDOR='IBM'
+      fi
   elif test  "x$OPENJDK_TARGET_OS" = xwindows; then
     # First line typically looks something like:
     # Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 16.00.30319.01 for 80x86
@@ -137,10 +146,14 @@ AC_DEFUN([TOOLCHAIN_FIND_COMPILER],
       AC_MSG_ERROR([Could not find a $COMPILER_NAME compiler. $HELP_MSG])
   fi
   BASIC_FIXUP_EXECUTABLE($1)
-  AC_MSG_CHECKING([resolved symbolic links for $1])
   TEST_COMPILER="[$]$1"
+  # Don't remove symbolic links on AIX because 'xlc_r' and 'xlC_r' may all be links
+  # to 'xlc' but it is crucial that we invoke the compiler with the right name!
+  if test "x$OPENJDK_BUILD_OS" != xaix; then
+    AC_MSG_CHECKING([resolved symbolic links for $1])
     BASIC_REMOVE_SYMBOLIC_LINKS(TEST_COMPILER)
     AC_MSG_RESULT([$TEST_COMPILER])
+  fi
   AC_MSG_CHECKING([if $1 is disguised ccache])
 
   COMPILER_BASENAME=`$BASENAME "$TEST_COMPILER"`
@@ -250,6 +263,9 @@ elif test "x$OPENJDK_TARGET_OS" = "xwindows"; then
   COMPILER_CHECK_LIST="cl"
 elif test "x$OPENJDK_TARGET_OS" = "xsolaris"; then
   COMPILER_CHECK_LIST="cc gcc"
+elif test "x$OPENJDK_TARGET_OS" = "xaix"; then
+  # Do not probe for cc on AIX.
+  COMPILER_CHECK_LIST="xlc_r"
 else
   COMPILER_CHECK_LIST="gcc cc"
 fi
@@ -258,6 +274,14 @@ TOOLCHAIN_FIND_COMPILER([CC],[C],[$COMPILER_CHECK_LIST])
 # Now that we have resolved CC ourself, let autoconf have its go at it
 AC_PROG_CC([$CC])
 
+# Option used to tell the compiler whether to create 32- or 64-bit executables
+# Notice that CC contains the full compiler path at this point.
+case $CC in
+  *xlc_r) COMPILER_TARGET_BITS_FLAG="-q";;
+  *)      COMPILER_TARGET_BITS_FLAG="-m";;
+esac
+AC_SUBST(COMPILER_TARGET_BITS_FLAG)
+
 ### Locate C++ compiler (CXX)
 
 if test "x$CXX" != x; then
@@ -266,6 +290,9 @@ elif test "x$OPENJDK_TARGET_OS" = "xwindows"; then
   COMPILER_CHECK_LIST="cl"
 elif test "x$OPENJDK_TARGET_OS" = "xsolaris"; then
   COMPILER_CHECK_LIST="CC g++"
+elif test "x$OPENJDK_TARGET_OS" = "xaix"; then
+  # Do not probe for CC on AIX .
+  COMPILER_CHECK_LIST="xlC_r"
 else
   COMPILER_CHECK_LIST="g++ CC"
 fi
@@ -307,6 +334,8 @@ if test "x$OPENJDK_TARGET_OS" != xwindows; then
 fi
 if test "x$OPENJDK_TARGET_OS" = xmacosx; then
     ARFLAGS="-r"
+elif test "x$OPENJDK_TARGET_OS" = xaix; then
+    ARFLAGS="-X64"
 else
     ARFLAGS=""
 fi
@@ -550,6 +579,29 @@ else
         POST_STRIP_CMD="$STRIP -x"
         POST_MCS_CMD="$MCS -d -a \"JDK $FULL_VERSION\""
     fi
+    if test "x$OPENJDK_TARGET_OS" = xaix; then
+        COMPILER_NAME=xlc
+        PICFLAG="-qpic=large"
+        LIBRARY_PREFIX=lib
+        SHARED_LIBRARY='lib[$]1.so'
+        STATIC_LIBRARY='lib[$]1.a'
+        SHARED_LIBRARY_FLAGS="-qmkshrobj"
+        SHARED_LIBRARY_SUFFIX='.so'
+        STATIC_LIBRARY_SUFFIX='.a'
+        OBJ_SUFFIX='.o'
+        EXE_SUFFIX=''
+        SET_SHARED_LIBRARY_NAME=''
+        SET_SHARED_LIBRARY_MAPFILE=''
+        C_FLAG_REORDER=''
+        CXX_FLAG_REORDER=''
+        SET_SHARED_LIBRARY_ORIGIN=''
+        SET_EXECUTABLE_ORIGIN=""
+        CFLAGS_JDK=""
+        CXXFLAGS_JDK=""
+        CFLAGS_JDKLIB_EXTRA=''
+        POST_STRIP_CMD="$STRIP -X32_64"
+        POST_MCS_CMD=""
+    fi
     if test "x$OPENJDK_TARGET_OS" = xwindows; then
         # If it is not gcc, then assume it is the MS Visual Studio compiler
         COMPILER_NAME=cl
@@ -725,6 +777,24 @@ case $COMPILER_TYPE in
 
         CFLAGS_DEBUG_SYMBOLS="-g -xs"
         CXXFLAGS_DEBUG_SYMBOLS="-g0 -xs"
+        ;;
+      xlc )
+        C_FLAG_DEPS="-qmakedep=gcc -MF"
+        CXX_FLAG_DEPS="-qmakedep=gcc -MF"
+        C_O_FLAG_HIGHEST="-O3"
+        C_O_FLAG_HI="-O3 -qstrict"
+        C_O_FLAG_NORM="-O2"
+        C_O_FLAG_NONE=""
+        CXX_O_FLAG_HIGHEST="-O3"
+        CXX_O_FLAG_HI="-O3 -qstrict"
+        CXX_O_FLAG_NORM="-O2"
+        CXX_O_FLAG_NONE=""
+        CFLAGS_DEBUG_SYMBOLS="-g"
+        CXXFLAGS_DEBUG_SYMBOLS="-g"
+        LDFLAGS_JDK="${LDFLAGS_JDK} -q64 -brtl -bnolibpath -liconv -bexpall"
+        CFLAGS_JDK="${CFLAGS_JDK} -qchars=signed -q64 -qfullpath -qsaveopt"
+        CXXFLAGS_JDK="${CXXFLAGS_JDK} -qchars=signed -q64 -qfullpath -qsaveopt"
+        ;;
     esac
     ;;
   CL )
@@ -835,6 +905,13 @@ case $COMPILER_NAME in
           LDFLAGS_JDK="$LDFLAGS_JDK -z defs -xildoff -ztext"
           LDFLAGS_CXX_JDK="$LDFLAGS_CXX_JDK -norunpath -xnolib"
           ;;
+      xlc )
+          CFLAGS_JDK="$CFLAGS_JDK -D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE -DSTDC"
+          CXXFLAGS_JDK="$CXXFLAGS_JDK -D_GNU_SOURCE -D_REENTRANT -D_LARGEFILE64_SOURCE -DSTDC"
+
+          LDFLAGS_JDK="$LDFLAGS_JDK"
+          LDFLAGS_CXX_JDK="$LDFLAGS_CXX_JDK"
+          ;;
       cl )
           CCXXFLAGS_JDK="$CCXXFLAGS $CCXXFLAGS_JDK -Zi -MD -Zc:wchar_t- -W3 -wd4800 \
                -D_STATIC_CPPLIB -D_DISABLE_DEPRECATE_STATIC_CPPLIB -DWIN32_LEAN_AND_MEAN \
@@ -904,6 +981,9 @@ fi
 if test "x$OPENJDK_TARGET_OS" = xsolaris; then
     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DSOLARIS"
 fi
+if test "x$OPENJDK_TARGET_OS" = xaix; then
+    CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DAIX -DPPC64"
+fi
 if test "x$OPENJDK_TARGET_OS" = xmacosx; then
     CCXXFLAGS_JDK="$CCXXFLAGS_JDK -DMACOSX -D_ALLBSD_SOURCE -D_DARWIN_UNLIMITED_SELECT"
     # Setting these parameters makes it an error to link to macosx APIs that are
@@ -1073,17 +1153,17 @@ AC_DEFUN_ONCE([TOOLCHAIN_SETUP_COMPILER_FLAGS_MISC],
   # ZERO_ARCHFLAG tells the compiler which mode to build for
   case "${OPENJDK_TARGET_CPU}" in
     s390)
-      ZERO_ARCHFLAG="-m31"
+      ZERO_ARCHFLAG="${COMPILER_TARGET_BITS_FLAG}31"
       ;;
     *)
-      ZERO_ARCHFLAG="-m${OPENJDK_TARGET_CPU_BITS}"
+      ZERO_ARCHFLAG="${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}"
   esac
   TOOLCHAIN_COMPILER_CHECK_ARGUMENTS([$ZERO_ARCHFLAG], [], [ZERO_ARCHFLAG=""])
   AC_SUBST(ZERO_ARCHFLAG)
 
-  # Check that the compiler supports -mX flags
+  # Check that the compiler supports -mX (or -qX on AIX) flags
   # Set COMPILER_SUPPORTS_TARGET_BITS_FLAG to 'true' if it does
-  TOOLCHAIN_COMPILER_CHECK_ARGUMENTS([-m${OPENJDK_TARGET_CPU_BITS}],
+  TOOLCHAIN_COMPILER_CHECK_ARGUMENTS([${COMPILER_TARGET_BITS_FLAG}${OPENJDK_TARGET_CPU_BITS}],
     [COMPILER_SUPPORTS_TARGET_BITS_FLAG=true],
     [COMPILER_SUPPORTS_TARGET_BITS_FLAG=false])
   AC_SUBST(COMPILER_SUPPORTS_TARGET_BITS_FLAG)

common/makefiles/JavaCompilation.gmk

@@ -163,11 +163,12 @@ define SetupArchive
 
     # The capture contents macro finds all files (matching the patterns, typically
     # .class and .prp) that are newer than the jar-file, ie the new content to be put into the jar.
+    # NOTICE: please leave the parentheses space separated otherwise the AIX build will break!
     $1_CAPTURE_CONTENTS=$$(foreach src,$$($1_SRCS),\
-                   (($(FIND) $$(src) -type f -a \( $$($1_FIND_PATTERNS) \) -a -newer $$@ $$($1_GREP_INCLUDES) \
+                   ( ( $(FIND) $$(src) -type f -a \( $$($1_FIND_PATTERNS) \) -a -newer $$@ $$($1_GREP_INCLUDES) \
                        $$($1_GREP_EXCLUDES) | $(SED) 's|$$(src)/||g' &&\
-                       $(ECHO) $$(subst $$(src)/,,$$($1_EXTRA_FILES))) > \
-                       $$(src)/_the.$$($1_JARNAME)_contents) $$(NEWLINE))
+                       $(ECHO) $$(subst $$(src)/,,$$($1_EXTRA_FILES) ) ) > \
+                       $$(src)/_the.$$($1_JARNAME)_contents) $$(NEWLINE) )
     # The capture metainf macro finds all files below the META-INF directory that are newer than the jar-file.
     ifeq (,$$($1_SKIP_METAINF))
         $1_CAPTURE_METAINF =$$(foreach src,$$($1_SRCS),($(FIND) $$(src)/META-INF -type f -a -newer $$@ 2> /dev/null | $(SED) 's|$$(src)/||g' >> $$(src)/_the.$$($1_JARNAME)_contents ) $$(NEWLINE))
@@ -176,19 +177,20 @@ define SetupArchive
     # tells us what to remove from the jar-file.
     $1_CAPTURE_DELETES=$$(foreach src,$$($1_SRCS),($(FIND) $$(src) -name _the.package.deleted -newer $$@ -exec $(SED) 's|$$(src)||g' \{\} >> $$($1_DELETES_FILE) \;) $$(NEWLINE))
     # The update contents macro updates the jar file with the previously capture contents.
-    # xargs is used to trim the whitespace from the contents file, to see if it is empty.
+    # Use 'wc -w' to see if the contents file is empty.
     $1_UPDATE_CONTENTS=$$(foreach src,$$($1_SRCS),\
                     (cd $$(src) && \
-                     if [ -n "`$(CAT) _the.$$($1_JARNAME)_contents | $(XARGS)`" ]; then \
+                     if [ "`$(WC) -w _the.$$($1_JARNAME)_contents | $(AWK) '{ print $$$$1 }'`" -gt "0" ]; then \
                          $(ECHO) "  updating" `$(WC) -l _the.$$($1_JARNAME)_contents | $(AWK) '{ print $$$$1 }'` files && \
                          $(JAR) $$($1_JAR_UPDATE_OPTIONS) $$@ @_the.$$($1_JARNAME)_contents; \
                      fi) $$(NEWLINE))
     # The s-variants of the above macros are used when the jar is created from scratch.
+    # NOTICE: please leave the parentheses space separated otherwise the AIX build will break!
     $1_SCAPTURE_CONTENTS=$$(foreach src,$$($1_SRCS),\
-                    (($(FIND) $$(src) -type f -a \( $$($1_FIND_PATTERNS) \) $$($1_GREP_INCLUDES) \
+                    ( ( $(FIND) $$(src) -type f -a \( $$($1_FIND_PATTERNS) \) $$($1_GREP_INCLUDES) \
 			$$($1_GREP_EXCLUDES) | $(SED) 's|$$(src)/||g' &&\
-			$$(subst $$(src)/,,$(ECHO) $$($1_EXTRA_FILES))) > \
-			$$(src)/_the.$$($1_JARNAME)_contents) $$(NEWLINE))
+			$$(subst $$(src)/,,$(ECHO) $$($1_EXTRA_FILES) ) ) > \
+			$$(src)/_the.$$($1_JARNAME)_contents) $$(NEWLINE) )
 
     ifeq (,$$($1_SKIP_METAINF))
         $1_SCAPTURE_METAINF=$$(foreach src,$$($1_SRCS),\

common/makefiles/NativeCompilation.gmk

@@ -495,7 +495,7 @@ define SetupNativeCompilation
         # Generating a static library, ie object file archive.
         $$($1_TARGET) : $$($1_EXPECTED_OBJS) $$($1_RES)
 	        $$(call ARCHIVING_MSG,$$($1_LIBRARY))
-	        $(AR) $$($1_AR_FLAGS) $(AR_OUT_OPTION)$$($1_TARGET) $$($1_EXPECTED_OBJS) \
+	        $(AR) $$($1_ARFLAGS) $(AR_OUT_OPTION)$$($1_TARGET) $$($1_EXPECTED_OBJS) \
 			$$($1_RES) $$($1_LDFLAGS_SUFFIX) $$($1_EXTRA_LDFLAGS_SUFFIX)
     endif