diff --git a/Modules/Platform/HP-UX.cmake b/Modules/Platform/HP-UX.cmake
index 8f0fce823..a6bb79e50 100644
--- a/Modules/Platform/HP-UX.cmake
+++ b/Modules/Platform/HP-UX.cmake
@@ -42,7 +42,6 @@ IF(CMAKE_COMPILER_IS_GNUCC)
   SET(CMAKE_SHARED_LIBRARY_C_FLAGS "-fPIC")     # -pic 
 ELSE(CMAKE_COMPILER_IS_GNUCC)
   # hp cc
-  SET(CMAKE_ANSI_CFLAGS "-Aa -Ae")
   # use ld directly to create shared libraries for hp cc
   SET(CMAKE_C_CREATE_SHARED_LIBRARY
       "ld <CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS> <CMAKE_SHARED_LIBRARY_SONAME_C_FLAG><TARGET_SONAME> <LINK_FLAGS> -o <TARGET> <OBJECTS> <LINK_LIBRARIES>")
@@ -53,6 +52,9 @@ ELSE(CMAKE_COMPILER_IS_GNUCC)
   SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG_SEP ":")   # : or empty
   SET(CMAKE_SHARED_LIBRARY_SONAME_C_FLAG "+h")
   SET(CMAKE_EXECUTABLE_RUNTIME_C_FLAG "-Wl,+b")       # -rpath
+  SET(CMAKE_C_FLAGS_INIT "")
+  SET(CMAKE_C_COMPILE_OBJECT
+    "<CMAKE_C_COMPILER> <DEFINES> -Aa -Ae <FLAGS> -o <OBJECT>   -c <SOURCE>")
 ENDIF(CMAKE_COMPILER_IS_GNUCC)
 
 # CXX compiler
@@ -79,7 +81,6 @@ ELSE(CMAKE_COMPILER_IS_GNUCXX)
   SET (CMAKE_CXX_FLAGS_MINSIZEREL_INIT "+O3 -DNDEBUG")
   SET (CMAKE_CXX_FLAGS_RELEASE_INIT "+O2 -DNDEBUG")
   SET (CMAKE_CXX_FLAGS_RELWITHDEBINFO_INIT "-g")
-  SET (CMAKE_C_FLAGS_INIT "")
 ENDIF(CMAKE_COMPILER_IS_GNUCXX)
 # set flags for gcc support
 INCLUDE(Platform/UnixPaths)