8238960: linux-i586 builds are inconsistent as the newly build jdk is…

… not able to reserve enough space for object heap

Reviewed-by: ihse, tbell, ahgross, jwilhelm

make/autoconf/flags-ldflags.m4

@@ -151,7 +151,12 @@ AC_DEFUN([FLAGS_SETUP_LDFLAGS_HELPER],
 
   # Setup LDFLAGS for linking executables
   if test "x$TOOLCHAIN_TYPE" = xgcc; then
-    EXECUTABLE_LDFLAGS="$EXECUTABLE_LDFLAGS -Wl,--allow-shlib-undefined -pie"
+    EXECUTABLE_LDFLAGS="$EXECUTABLE_LDFLAGS -Wl,--allow-shlib-undefined"
+    # Enabling pie on 32 bit builds prevents the JVM from allocating a continuous
+    # java heap.
+    if test "x$OPENJDK_TARGET_CPU_BITS" != "x32"; then
+      EXECUTABLE_LDFLAGS="$EXECUTABLE_LDFLAGS -pie"
+    fi
   fi
 
   if test "x$ALLOW_ABSOLUTE_PATHS_IN_OUTPUT" = "xfalse"; then