configure: use XC_CONFIGURE_PREAMBLE early checks

Some basic checks we make were placed early enough in generated
configure script when using autoconf 2.5X versions. Newer autoconf
versions expand these checks much further into the configure script,
rendering them useless. Using XC_CONFIGURE_PREAMBLE fixes placement
of early intended checks across all our autoconf supported versions.

3 files changed, 2 insertions, 106 deletions

diff --git a/configure.ac b/configure.ac
index e20260047..569804b82 100644
--- a/configure.ac
+++ b/configure.ac
@@ -26,6 +26,7 @@ AC_PREREQ(2.57)
 dnl We don't know the version number "statically" so we use a dash here
 AC_INIT([curl], [-], [a suitable curl mailing list: http://curl.haxx.se/mail/])
 
+XC_OVR_ZZ40
 XC_OVR_ZZ50
 XC_OVR_ZZ60
 CURL_OVERRIDE_AUTOCONF
@@ -48,8 +49,6 @@ CURL_CHECK_OPTION_CURLDEBUG
 CURL_CHECK_OPTION_SYMBOL_HIDING
 CURL_CHECK_OPTION_ARES
 
-CURL_CHECK_PATH_SEPARATOR_REQUIRED
-
 #
 # save the configure arguments
 #
diff --git a/m4/curl-override.m4 b/m4/curl-override.m4
index 263d7de38..a35d3b2f1 100644
--- a/m4/curl-override.m4
+++ b/m4/curl-override.m4
@@ -2,7 +2,7 @@
 #***************************************************************************
 
 # File version for 'aclocal' use. Keep it a single number.
-# serial 6
+# serial 7
 
 dnl CURL_OVERRIDE_AUTOCONF
 dnl -------------------------------------------------
@@ -74,18 +74,3 @@ choke me
 #endif
 ], [return $1 ();])])
 
-dnl Override Autoconf's PATH_SEPARATOR check
-dnl -------------------------------------------------
-dnl This is done to ensure that the same check is
-dnl used across different Autoconf versions and to
-dnl allow us to use this macro early enough in the
-dnl configure script.
-
-m4_defun([_AS_PATH_SEPARATOR_PREPARE],
-[CURL_CHECK_PATH_SEPARATOR
-m4_define([$0],[])])
-
-m4_defun([_LT_AC_LIBTOOL_SYS_PATH_SEPARATOR],
-[CURL_CHECK_PATH_SEPARATOR
-m4_define([$0],[])])
-
diff --git a/m4/curl-system.m4 b/m4/curl-system.m4
deleted file mode 100644
index 6e3e9f97b..000000000
--- a/m4/curl-system.m4
+++ /dev/null
@@ -1,88 +0,0 @@
-#***************************************************************************
-#                                  _   _ ____  _
-#  Project                     ___| | | |  _ \| |
-#                             / __| | | | |_) | |
-#                            | (__| |_| |  _ <| |___
-#                             \___|\___/|_| \_\_____|
-#
-# Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel@haxx.se>, et al.
-#
-# This software is licensed as described in the file COPYING, which
-# you should have received as part of this distribution. The terms
-# are also available at http://curl.haxx.se/docs/copyright.html.
-#
-# You may opt to use, copy, modify, merge, publish, distribute and/or sell
-# copies of the Software, and permit persons to whom the Software is
-# furnished to do so, under the terms of the COPYING file.
-#
-# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
-# KIND, either express or implied.
-#
-#***************************************************************************
-
-# File version for 'aclocal' use. Keep it a single number.
-# serial 3
-
-
-dnl CURL_CHECK_PATH_SEPARATOR
-dnl -------------------------------------------------
-dnl Check and compute the path separator for us. This
-dnl path separator is the symbol used to diferentiate
-dnl or separate paths inside the PATH environment var.
-
-AC_DEFUN([CURL_CHECK_PATH_SEPARATOR], [
-  if test -z "$curl_cv_PATH_SEPARATOR"; then
-    if test -z "$PATH"; then
-      AC_MSG_ERROR([PATH not set. Cannot continue without PATH being set.])
-    fi
-    dnl Directory count in PATH when using a colon separator.
-    tst_dirs_col=0
-    tst_save_IFS=$IFS; IFS=':'
-    for tst_dir in $PATH; do
-      IFS=$tst_save_IFS
-      test -d "$tst_dir" && tst_dirs_col=`expr $tst_dirs_col + 1`
-    done
-    IFS=$tst_save_IFS
-    dnl Directory count in PATH when using a semicolon separator.
-    tst_dirs_sem=0
-    tst_save_IFS=$IFS; IFS=';'
-    for tst_dir in $PATH; do
-      IFS=$tst_save_IFS
-      test -d "$tst_dir" && tst_dirs_sem=`expr $tst_dirs_sem + 1`
-    done
-    IFS=$tst_save_IFS
-    if test $tst_dirs_sem -eq $tst_dirs_col; then
-      dnl When both counting methods give the same result we do not want to
-      dnl chose one over the other, and consider auto-detection not possible.
-      if test -z "$PATH_SEPARATOR"; then
-        dnl Stop dead until user provides PATH_SEPARATOR definition.
-        AC_MSG_ERROR([PATH_SEPARATOR not set. Cannot continue without it.])
-      fi
-    else
-      dnl Separator with the greater directory count is the auto-detected one.
-      if test $tst_dirs_sem -gt $tst_dirs_col; then
-        tst_auto_separator=';'
-      else
-        tst_auto_separator=':'
-      fi
-      if test -z "$PATH_SEPARATOR"; then
-        dnl Simply use the auto-detected one when not already set.
-        PATH_SEPARATOR="$tst_auto_separator"
-      fi
-    fi
-    curl_cv_PATH_SEPARATOR="$PATH_SEPARATOR"
-  fi
-  AC_SUBST([PATH_SEPARATOR])
-  AC_SUBST([PATH])
-])
-
-
-dnl CURL_CHECK_PATH_SEPARATOR_REQUIRED
-dnl -------------------------------------------------
-dnl Use this to ensure that the path separator check
-dnl macro is only expanded and included once.
-
-AC_DEFUN([CURL_CHECK_PATH_SEPARATOR_REQUIRED], [
-  AC_REQUIRE([CURL_CHECK_PATH_SEPARATOR])dnl
-])
-