diff --git a/config/CONFIG.Host.hp700 b/config/CONFIG.Host.hp700
index 5409bb85d..a54c1d4d4 100644
--- a/config/CONFIG.Host.hp700
+++ b/config/CONFIG.Host.hp700
@@ -9,7 +9,7 @@ ARCH_CLASS = hp700
 include $(EPICS_BASE)/config/CONFIG.Host.UnixCommon
 
 SHRLIB_SUFFIX = .sl
- 
+
 AR = ar
 
 # Configure OS vendor C compiler
@@ -44,8 +44,10 @@ HPCC_SLIBS_NO=
 HPCC_SHRLIB_CFLAGS_YES = +Z
 HPCC_SHRLIB_LDFLAGS_YES = -b
 
-CCC = CC
-CCC_NORMAL = $(CCC) +p
+# New HP C++ compiler
+CCC = aCC
+# avoid treating "future errors" as actual errors
+CCC_NORMAL = $(CCC) +W302 +W829 +W818 +W392 +W469 +W495 +W749 +W667 +W392 +W684
 CCC_STRICT = $(CCC) +p
 CCC_TEMPL_INST_FLAG =
 CCC_WARN_YES = +w
@@ -56,8 +58,16 @@ CCC_SFLAGS_YES= -Wl,-a,archive
 CCC_SFLAGS_NO=
 CCC_SLIBS_YES =
 CCC_SLIBS_NO=
+CCC_SHRLIB_CFLAGS_YES = +Z
+# shared libs will be found by searching environment variable SHLIB_PATH,
+# then by searching the specified path (see below)
+CCC_SHRLIB_LDFLAGS_YES = -b
+
 CCC_DEPENDS_FLAG =
 
-ARCH_DEP_CFLAGS = -D_HPUX_SOURCE -DHP_UX
+# +DAportable causes portable object code to be created for execution
+# on different PA-Risc machines
+ARCH_DEP_CFLAGS = -D_HPUX_SOURCE -DHP_UX +DAportable
+ARCH_DEP_CXXFLAGS = -D_HPUX_SOURCE -DHP_UX +DAportable
 ARCH_DEP_LDLIBS =
-
+ARCH_DEP_LDFLAGS = -Wl,+s,+b$(DEFAULT_SHRLIB_SEARCH_PATH)