From 2df622fd143e7721c67c403cd372b5bb13580431 Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Wed, 19 Apr 2006 11:11:10 +0000
Subject: detect ICC and pass on "-we 147" so that the configure checks for
 function arguments work properly - and the option is not harmful for the rest
 of the curl build either!

---
 acinclude.m4 | 45 +++++++++++++++++++++++++++++++++------------
 configure.ac |  7 +++++++
 2 files changed, 40 insertions(+), 12 deletions(-)

diff --git a/acinclude.m4 b/acinclude.m4
index 546c373d6..2b3bb34a8 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -5,7 +5,7 @@
 #                            | (__| |_| |  _ <| |___
 #                             \___|\___/|_| \_\_____|
 #
-# Copyright (C) 1998 - 2005, Daniel Stenberg, <daniel@haxx.se>, et al.
+# Copyright (C) 1998 - 2006, Daniel Stenberg, <daniel@haxx.se>, et al.
 #
 # This software is licensed as described in the file COPYING, which
 # you should have received as part of this distribution. The terms
@@ -1105,12 +1105,44 @@ fi
 ])
 
 
+dnl **********************************************************************
+dnl CURL_DETECT_ICC ([ACTION-IF-YES])
+dnl
+dnl check if this is the Intel ICC compiler, and if so run the ACTION-IF-YES
+dnl sets the $ICC variable to "yes" or "no"
+dnl **********************************************************************
+AC_DEFUN([CURL_DETECT_ICC],
+[
+    ICC="no"
+    AC_MSG_CHECKING([for icc in use])
+    if test "$GCC" = "yes"; then
+       dnl check if this is icc acting as gcc in disguise
+       AC_EGREP_CPP([^__INTEL_COMPILER], [__INTEL_COMPILER],
+         dnl action if the text is found, this it has not been replaced by the
+         dnl cpp
+         ICC="no",
+         dnl the text was not found, it was replaced by the cpp
+         ICC="yes"
+         AC_MSG_RESULT([yes])
+         [$1]
+       )
+    fi
+    if test "$ICC" = "no"; then
+        # this is not ICC
+        AC_MSG_RESULT([no])
+    fi
+])
+
 dnl We create a function for detecting which compiler we use and then set as
 dnl pendantic compiler options as possible for that particular compiler. The
 dnl options are only used for debug-builds.
 
 AC_DEFUN([CURL_CC_DEBUG_OPTS],
 [
+    if test "z$ICC" = "z"; then
+      CURL_DETECT_ICC
+    fi
+
     if test "$GCC" = "yes"; then
 
        dnl figure out gcc version!
@@ -1121,17 +1153,6 @@ AC_DEFUN([CURL_CC_DEBUG_OPTS],
        gccnum=`(expr $num1 "*" 100 + $num2) 2>/dev/null`
        AC_MSG_RESULT($gccver)
 
-       AC_MSG_CHECKING([if this is icc in disguise])
-       AC_EGREP_CPP([^__INTEL_COMPILER], [__INTEL_COMPILER],
-         dnl action if the text is found, this it has not been replaced by the
-         dnl cpp
-         ICC="no"
-         AC_MSG_RESULT([no]),
-         dnl the text was not found, it was replaced by the cpp
-         ICC="yes"
-         AC_MSG_RESULT([yes])
-       )
-
        if test "$ICC" = "yes"; then
          dnl this is icc, not gcc.
 
diff --git a/configure.ac b/configure.ac
index 7f4d4fcdf..bb99c696e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -306,6 +306,13 @@ AC_HELP_STRING([--disable-manual],[Disable built-in manual]),
 dnl The actual use of the USE_MANUAL variable is done much later in this
 dnl script to allow other actions to disable it as well.
 
+dnl **********************************************************************
+dnl check if this is the Intel ICC compiler, and if so make it stricter
+dnl (convert warning 147 into an error) so that it properly can detect the
+dnl gethostbyname_r() version
+dnl **********************************************************************
+CURL_DETECT_ICC([CFLAGS="$CFLAGS -we 147"])
+
 dnl **********************************************************************
 dnl Checks for libraries.
 dnl **********************************************************************
-- 
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