From 9d59d651a149ff230621234fdb723d383e502e45 Mon Sep 17 00:00:00 2001
From: Ken Martin <ken.martin@kitware.com>
Date: Fri, 13 Sep 2002 11:09:07 -0400
Subject: [PATCH] now uses TryCompile

---
 Templates/CXXCMakeSystemConfig.cmake.in |  4 --
 Templates/cxxconfigure                  | 73 ++++---------------------
 Templates/cxxconfigure.in               | 22 --------
 3 files changed, 10 insertions(+), 89 deletions(-)

diff --git a/Templates/CXXCMakeSystemConfig.cmake.in b/Templates/CXXCMakeSystemConfig.cmake.in
index 8ce8e1579..94d8647d0 100644
--- a/Templates/CXXCMakeSystemConfig.cmake.in
+++ b/Templates/CXXCMakeSystemConfig.cmake.in
@@ -78,9 +78,6 @@ SET (CMAKE_CXX_FLAGS          "@CXXFLAGS@" CACHE STRING
 SET (CMAKE_TEMPLATE_FLAGS     "@CMAKE_TEMPLATE_FLAGS@" CACHE STRING
      "CXX template flags used by compiler.")
 
-SET (CMAKE_NO_ANSI_STREAM_HEADERS @CMAKE_NO_ANSI_STREAM_HEADERS@ CACHE INTERNAL 
-     "Does the compiler support headers like iostream.")
-
 SET (CMAKE_NO_ANSI_STRING_STREAM @CMAKE_NO_ANSI_STRING_STREAM@ CACHE INTERNAL 
      "Does the compiler support the ansi stringstream class.")
 
@@ -106,7 +103,6 @@ CMAKE_CXX_COMPILER
 CMAKE_CXX_AR
 CMAKE_CXX_AR_ARGS
 CMAKE_TEMPLATE_FLAGS
-CMAKE_NO_ANSI_STREAM_HEADERS
 CMAKE_NO_ANSI_FOR_SCOPE
 CMAKE_NO_STD_NAMESPACE
 CMAKE_COMPILER_IS_GNUCXX
diff --git a/Templates/cxxconfigure b/Templates/cxxconfigure
index 9e3aac1ee..1d0e34451 100755
--- a/Templates/cxxconfigure
+++ b/Templates/cxxconfigure
@@ -916,63 +916,11 @@ cross_compiling=$ac_cv_prog_cc_cross
 fi
 
 
-
-# check non-g++ compilers to see if they have the standard 
-# ansi stream files (without the .h)
-if test $ac_cv_prog_gxx = no; then
-  CXXFLAGS_ORIG="$CXXFLAGS"
-  CXXFLAGS="$CMAKE_ANSI_CXXFLAGS $CXXFLAGS"
-  echo $ac_n "checking ansi standard C++ stream headers ""... $ac_c" 1>&6
-echo "configure:927: checking ansi standard C++ stream headers " >&5 
-  
-  ac_ext=C
-# CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='${CXX-g++} -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
-ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
-cross_compiling=$ac_cv_prog_cxx_cross
-
-  cat > conftest.$ac_ext <<EOF
-#line 937 "configure"
-#include "confdefs.h"
-
-  #include <iostream>
-  
-int main() {
-
-; return 0; }
-EOF
-if { (eval echo configure:946: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
-  rm -rf conftest*
-  
-  echo "$ac_t""yes" 1>&6
-  
-else
-  echo "configure: failed program was:" >&5
-  cat conftest.$ac_ext >&5
-  rm -rf conftest*
-  
-  CMAKE_NO_ANSI_STREAM_HEADERS=1
-  echo "$ac_t""no" 1>&6
-  
-fi
-rm -f conftest*
-  ac_ext=c
-# CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
-ac_link='${CC-cc} -o conftest${ac_exeext} $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
-cross_compiling=$ac_cv_prog_cc_cross
-
-  CXXFLAGS="$CXXFLAGS_ORIG"
-fi
-
-
 # check compilers to see if they have std::stringstream
 CXXFLAGS_ORIG="$CXXFLAGS"
 CXXFLAGS="$CMAKE_ANSI_CXXFLAGS $CXXFLAGS"
 echo $ac_n "checking for ansi standard C++ stringstream""... $ac_c" 1>&6
-echo "configure:976: checking for ansi standard C++ stringstream" >&5
+echo "configure:924: checking for ansi standard C++ stringstream" >&5
 
 ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -982,7 +930,7 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 986 "configure"
+#line 934 "configure"
 #include "confdefs.h"
 
 #include <sstream>
@@ -991,7 +939,7 @@ int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:995: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:943: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
 echo "$ac_t""yes" 1>&6
@@ -1021,7 +969,7 @@ if test $ac_cv_prog_gxx = no; then
   CXXFLAGS_ORIG="$CXXFLAGS"
   CXXFLAGS="$CMAKE_ANSI_CXXFLAGS $CXXFLAGS"
   echo $ac_n "checking whether the std namespace is supported""... $ac_c" 1>&6
-echo "configure:1025: checking whether the std namespace is supported" >&5
+echo "configure:973: checking whether the std namespace is supported" >&5
   
   ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -1031,7 +979,7 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
   cat > conftest.$ac_ext <<EOF
-#line 1035 "configure"
+#line 983 "configure"
 #include "confdefs.h"
 
   #include <list>
@@ -1041,7 +989,7 @@ int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:1045: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:993: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
   echo "$ac_t""yes" 1>&6
@@ -1072,7 +1020,7 @@ if test $ac_cv_prog_gxx = no; then
   CXXFLAGS_ORIG="$CXXFLAGS"
   CXXFLAGS="$CMAKE_ANSI_CXXFLAGS $CXXFLAGS"
   echo $ac_n "checking ansi for scope support""... $ac_c" 1>&6
-echo "configure:1076: checking ansi for scope support" >&5
+echo "configure:1024: checking ansi for scope support" >&5
   
   ac_ext=C
 # CXXFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -1082,7 +1030,7 @@ ac_link='${CXX-g++} -o conftest${ac_exeext} $CXXFLAGS $CPPFLAGS $LDFLAGS conftes
 cross_compiling=$ac_cv_prog_cxx_cross
 
   cat > conftest.$ac_ext <<EOF
-#line 1086 "configure"
+#line 1034 "configure"
 #include "confdefs.h"
 
   void foo() { for(int i;;); for(int i;;); }
@@ -1091,7 +1039,7 @@ int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:1095: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1043: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   
   echo "$ac_t""yes" 1>&6
@@ -1124,7 +1072,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1128: checking for $ac_word" >&5
+echo "configure:1076: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_CMAKE_AR_TMP'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1367,7 +1315,6 @@ s%@CXX@%$CXX%g
 s%@CMAKE_NO_EXPLICIT_TEMPLATE_INSTANTIATION@%$CMAKE_NO_EXPLICIT_TEMPLATE_INSTANTIATION%g
 s%@CMAKE_ANSI_CXXFLAGS@%$CMAKE_ANSI_CXXFLAGS%g
 s%@CMAKE_TEMPLATE_FLAGS@%$CMAKE_TEMPLATE_FLAGS%g
-s%@CMAKE_NO_ANSI_STREAM_HEADERS@%$CMAKE_NO_ANSI_STREAM_HEADERS%g
 s%@CMAKE_NO_ANSI_STRING_STREAM@%$CMAKE_NO_ANSI_STRING_STREAM%g
 s%@CMAKE_NO_STD_NAMESPACE@%$CMAKE_NO_STD_NAMESPACE%g
 s%@CMAKE_NO_ANSI_FOR_SCOPE@%$CMAKE_NO_ANSI_FOR_SCOPE%g
diff --git a/Templates/cxxconfigure.in b/Templates/cxxconfigure.in
index 168ca7b6a..f71484315 100644
--- a/Templates/cxxconfigure.in
+++ b/Templates/cxxconfigure.in
@@ -132,28 +132,6 @@ if test $ac_cv_prog_gxx = no; then
 fi
 AC_SUBST(CMAKE_TEMPLATE_FLAGS)
 
-
-# check non-g++ compilers to see if they have the standard 
-# ansi stream files (without the .h)
-if test $ac_cv_prog_gxx = no; then
-  CXXFLAGS_ORIG="$CXXFLAGS"
-  CXXFLAGS="$CMAKE_ANSI_CXXFLAGS $CXXFLAGS"
-  AC_MSG_CHECKING( ansi standard C++ stream headers ) 
-  AC_LANG_SAVE
-  AC_LANG_CPLUSPLUS
-  AC_TRY_COMPILE([
-  #include <iostream>
-  ],,[
-  AC_MSG_RESULT(yes)
-  ],[
-  CMAKE_NO_ANSI_STREAM_HEADERS=1
-  AC_MSG_RESULT(no)
-  ])
-  AC_LANG_RESTORE
-  CXXFLAGS="$CXXFLAGS_ORIG"
-fi
-AC_SUBST(CMAKE_NO_ANSI_STREAM_HEADERS)
-
 # check compilers to see if they have std::stringstream
 CXXFLAGS_ORIG="$CXXFLAGS"
 CXXFLAGS="$CMAKE_ANSI_CXXFLAGS $CXXFLAGS"