From a30a41e5ca07a278dbea87fd7d6085e1f6bf9714 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Wed, 8 Jul 2009 09:14:56 -0400
Subject: ENH: Identify HP C compiler

This compiler does not enable ANSI mode by default.  When identifying
the C compiler we try passing -Aa in case it is the HP compiler.
---
 Modules/CMakeDetermineCCompiler.cmake | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Modules/CMakeDetermineCCompiler.cmake b/Modules/CMakeDetermineCCompiler.cmake
index 82e9448..bb119cd 100644
--- a/Modules/CMakeDetermineCCompiler.cmake
+++ b/Modules/CMakeDetermineCCompiler.cmake
@@ -107,6 +107,9 @@ IF(NOT CMAKE_C_COMPILER_ID_RUN)
   SET(CMAKE_C_COMPILER_ID_TEST_FLAGS
     # Try compiling to an object file only.
     "-c"
+
+    # Try enabling ANSI mode on HP.
+    "-Aa"
     )
 
   # Try to identify the compiler.
-- 
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