Remove unneeded checks from configure.ac.

HAVE_{BI,STD,FWD}_ITERATOR and HAVE_NAMESPACES were not used in the code.
bison and flex are no longer used.
CAN_DLOPEN_SELF was never used either.
AC_PROG_LIBTOOL is not needed since we don't use libtool, we only need the
libltdl checks for dlopen.
Add check for AR, it used to be done by AC_PROG_LIBTOOL.
AC_TYPE_SIGNAL is deprecated, follow autoupdate's suggestion and replace with
void.
Remove unused m4 files.
Configure can now be generated using autoconf 2.65 too, without any warnings!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94534 91177308-0d34-0410-b5e6-96231b3b80d8

6 files changed, 0 insertions, 121 deletions

diff --git a/autoconf/m4/bison.m4 b/autoconf/m4/bison.m4
deleted file mode 100644
index 48b83cc..0000000
--- a/autoconf/m4/bison.m4
+++ /dev/null
@@ -1,15 +0,0 @@
-#
-# Check for Bison. 
-#
-# This macro verifies that Bison is installed.  If successful, then
-# 1) YACC is set to bison -y (to emulate YACC calls)
-# 2) BISON is set to bison
-#
-AC_DEFUN([AC_PROG_BISON],
-[AC_CACHE_CHECK([],[llvm_cv_has_bison],[AC_PROG_YACC()])
-if test "$YACC" != "bison -y"; then
-  AC_SUBST(BISON,[])
-  AC_MSG_WARN([bison not found, can't rebuild grammars])
-else
-  AC_SUBST(BISON,[bison])
-fi])
diff --git a/autoconf/m4/cxx_bidi_iterator.m4 b/autoconf/m4/cxx_bidi_iterator.m4
deleted file mode 100644
index d7de856..0000000
--- a/autoconf/m4/cxx_bidi_iterator.m4
+++ /dev/null
@@ -1,22 +0,0 @@
-#
-# Check for bidirectional iterator extension.  This is modified from
-# http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_have_ext_hash_set.html
-#
-AC_DEFUN([AC_CXX_HAVE_BI_ITERATOR],
-[AC_CACHE_CHECK(whether the compiler has the bidirectional iterator,
-ac_cv_cxx_have_bi_iterator,
-[AC_REQUIRE([AC_CXX_NAMESPACES])
-  AC_LANG_PUSH([C++])
-  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <iterator>
-#ifdef HAVE_NAMESPACES
-using namespace std;
-#endif]], [[bidirectional_iterator<int,int> t; return 0;]])],[ac_cv_cxx_have_bi_iterator=yes],[ac_cv_cxx_have_bi_iterator=no])
-  AC_LANG_POP([C++])
-])
-if test "$ac_cv_cxx_have_bi_iterator" = yes
-then
-  AC_DEFINE(HAVE_BI_ITERATOR,1,[Have bi-directional iterator])
-else
-  AC_DEFINE(HAVE_BI_ITERATOR,0,[Does not have bi-directional iterator])
-fi
-])
diff --git a/autoconf/m4/cxx_fwd_iterator.m4 b/autoconf/m4/cxx_fwd_iterator.m4
deleted file mode 100644
index eb7660c..0000000
--- a/autoconf/m4/cxx_fwd_iterator.m4
+++ /dev/null
@@ -1,22 +0,0 @@
-# Check for forward iterator extension.  This is modified from
-# http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_have_ext_hash_set.html
-AC_DEFUN([AC_CXX_HAVE_FWD_ITERATOR],
-[AC_CACHE_CHECK(whether the compiler has forward iterators,
-ac_cv_cxx_have_fwd_iterator,
-[AC_REQUIRE([AC_CXX_NAMESPACES])
-  AC_LANG_PUSH([C++])
-  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <iterator>
-#ifdef HAVE_NAMESPACES
-using namespace std;
-#endif]], [[forward_iterator<int,int> t; return 0;]])],[ac_cv_cxx_have_fwd_iterator=yes],[ac_cv_cxx_have_fwd_iterator=no])
-  AC_LANG_POP([C++])
-])
-if test "$ac_cv_cxx_have_fwd_iterator" = yes
-then
-   AC_DEFINE(HAVE_FWD_ITERATOR,1,[Have forward iterator])
-else
-   AC_DEFINE(HAVE_FWD_ITERATOR,0,[Does not have forward iterator])
-fi
-])
-
-
diff --git a/autoconf/m4/cxx_namespaces.m4 b/autoconf/m4/cxx_namespaces.m4
deleted file mode 100644
index d8d650e..0000000
--- a/autoconf/m4/cxx_namespaces.m4
+++ /dev/null
@@ -1,19 +0,0 @@
-# Check for C++ namespace support.  This is from
-# http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_namespaces.html
-#
-AC_DEFUN([AC_CXX_NAMESPACES],
-[AC_CACHE_CHECK(whether the compiler implements namespaces,
-ac_cv_cxx_namespaces,
-[AC_LANG_PUSH([C++])
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
-   [[namespace Outer { namespace Inner { int i = 0; }}]],
-   [[using namespace Outer::Inner; return i;]])], 
-   ac_cv_cxx_namespaces=yes, 
-   ac_cv_cxx_namespaces=no)
- AC_LANG_POP([C++])
-])
-if test "$ac_cv_cxx_namespaces" = yes; then
-  AC_DEFINE(HAVE_NAMESPACES,,[define if the compiler implements namespaces])
-fi
-])
-
diff --git a/autoconf/m4/cxx_std_iterator.m4 b/autoconf/m4/cxx_std_iterator.m4
deleted file mode 100644
index 38a6117..0000000
--- a/autoconf/m4/cxx_std_iterator.m4
+++ /dev/null
@@ -1,26 +0,0 @@
-# Check for standard iterator extension.  This is modified from
-# http://www.gnu.org/software/ac-archive/htmldoc/ac_cxx_have_ext_hash_set.html
-AC_DEFUN([AC_CXX_HAVE_STD_ITERATOR],
-[AC_CACHE_CHECK(whether the compiler has the standard iterator,
-ac_cv_cxx_have_std_iterator,
-[AC_REQUIRE([AC_CXX_NAMESPACES])
-  AC_LANG_PUSH([C++])
-  AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
-    [[#include <iterator>
-#ifdef HAVE_NAMESPACES
-using namespace std;
-#endif]],
-  [[iterator<int,int,int> t; return 0;]])],
-  ac_cv_cxx_have_std_iterator=yes, 
-  ac_cv_cxx_have_std_iterator=no)
-  AC_LANG_POP([C++])
-])
-if test "$ac_cv_cxx_have_std_iterator" = yes
-then
-   AC_DEFINE(HAVE_STD_ITERATOR,1,[Have std namespace iterator])
-else
-   AC_DEFINE(HAVE_STD_ITERATOR,0,[Does not have std namespace iterator])
-fi
-])
-
-
diff --git a/autoconf/m4/flex.m4 b/autoconf/m4/flex.m4
deleted file mode 100644
index 5cb3dc4..0000000
--- a/autoconf/m4/flex.m4
+++ /dev/null
@@ -1,17 +0,0 @@
-#
-# Check for FLEX.  
-#
-# This macro verifies that flex is installed.  If successful, then
-# 1) $LEX is set to "flex" (to emulate lex calls)
-# 2) BISON is set to bison
-AC_DEFUN([AC_PROG_FLEX],
-[AC_CACHE_CHECK(,
-ac_cv_has_flex,
-[AC_PROG_LEX()
-])
-if test "$LEX" != "flex"; then
-  AC_MSG_ERROR([flex not found but required])
-else
-  AC_SUBST(FLEX,[flex],[location of flex])
-fi
-])