Update AIX thread test.

configure

@@ -1815,54 +1815,13 @@ TERMCAP_LIBS=
 TLS_LIBS=
 
 
-
-save_CC="$CC"
-if test -z "${CC}"; then
-	for ac_prog in cc
-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:1827: checking for $ac_word" >&5
-if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
-  echo $ac_n "(cached) $ac_c" 1>&6
-else
-  if test -n "$CC"; then
-  ac_cv_prog_CC="$CC" # Let the user override the test.
-else
-  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
-  ac_dummy="$PATH"
-  for ac_dir in $ac_dummy; do
-    test -z "$ac_dir" && ac_dir=.
-    if test -f $ac_dir/$ac_word; then
-      ac_cv_prog_CC="$ac_prog"
-      break
-    fi
-  done
-  IFS="$ac_save_ifs"
-fi
-fi
-CC="$ac_cv_prog_CC"
-if test -n "$CC"; then
-  echo "$ac_t""$CC" 1>&6
-else
-  echo "$ac_t""no" 1>&6
-fi
-
-test -n "$CC" && break
-done
-
-fi
-
-
-
 # Make sure we can run config.sub.
 if ${CONFIG_SHELL-/bin/sh} $ac_config_sub sun4 >/dev/null 2>&1; then :
 else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
 fi
 
 echo $ac_n "checking host system type""... $ac_c" 1>&6
-echo "configure:1866: checking host system type" >&5
+echo "configure:1825: checking host system type" >&5
 
 host_alias=$host
 case "$host_alias" in
@@ -1883,25 +1842,27 @@ host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 echo "$ac_t""$host" 1>&6
 
 
-case "$host" in
+
-	*-*-aix*) ol_host_os=aix ;;
+
-esac
 
 ol_aix_threads=no
-if test -z "$save_CC" -a "$CC" = cc -a "$ol_host_os" = aix ; then
+case "$host" in
+*-*-aix*)
+	if test -z "CC" -a "$ol_host_os" = aix ; then
 		case "$ol_with_threads" in
 		auto | yes |  posix) ol_aix_threads=yes ;;
 		esac
-fi
+	fi
+;;
+esac
 
-if test ol_aix_threads = yes ; then
+if test -z "${CC}" -a $ol_aix_threads = yes ; then
-	CC=
+	for ac_prog in cc_r xlc_r cc
-	for ac_prog in cc_r xlc_r
 do
 # Extract the first word of "$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:1905: checking for $ac_word" >&5
+echo "configure:1866: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1931,19 +1892,58 @@ test -n "$CC" && break
 done
 
 
-	if test "$CC" ; then
+	if test "$CC" = cc ; then
 				if test $ol_with_threads != auto ; then
 			{ echo "configure: error: --with-threads requires cc_r (or other suitable compiler) on AIX" 1>&2; exit 1; }
 		else
 			echo "configure: warning: disabling threads, no cc_r on AIX" 1>&2
 		fi
 		ol_with_threads=no
-	else
+
+	elif test "$CC" ; then
 		ol_with_threads=posix
 		ol_cv_pthread_create=yes
 	fi
 fi
 
+if test -z "${CC}"; then
+	for ac_prog in cc
+do
+# Extract the first word of "$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:1916: checking for $ac_word" >&5
+if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
+  echo $ac_n "(cached) $ac_c" 1>&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
+  ac_dummy="$PATH"
+  for ac_dir in $ac_dummy; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f $ac_dir/$ac_word; then
+      ac_cv_prog_CC="$ac_prog"
+      break
+    fi
+  done
+  IFS="$ac_save_ifs"
+fi
+fi
+CC="$ac_cv_prog_CC"
+if test -n "$CC"; then
+  echo "$ac_t""$CC" 1>&6
+else
+  echo "$ac_t""no" 1>&6
+fi
+
+test -n "$CC" && break
+done
+
+fi
+
+
 # Extract the first word of "ranlib", so it can be a program name with args.
 set dummy ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
@@ -11866,12 +11866,12 @@ s%@MAKEINFO@%$MAKEINFO%g
 s%@SET_MAKE@%$SET_MAKE%g
 s%@top_builddir@%$top_builddir%g
 s%@ldap_subdir@%$ldap_subdir%g
-s%@CC@%$CC%g
 s%@host@%$host%g
 s%@host_alias@%$host_alias%g
 s%@host_cpu@%$host_cpu%g
 s%@host_vendor@%$host_vendor%g
 s%@host_os@%$host_os%g
+s%@CC@%$CC%g
 s%@RANLIB@%$RANLIB%g
 s%@LD@%$LD%g
 s%@NM@%$NM%g

configure.in

@@ -304,61 +304,62 @@ READLINE_LIBS=
 TERMCAP_LIBS=
 TLS_LIBS=
 
+dnl ----------------------------------------------------------------
+dnl Determine host platform
+dnl		we try not to use this for much
+AC_CANONICAL_HOST
+
 dnl ----------------------------------------------------------------
 dnl Checks for programs
 
 dnl AC_PROG_INSTALL
 
-dnl The default compiler is cc (NOT gcc)
-dnl	(should check to see if 'cc' exists)
-save_CC="$CC"
-if test -z "${CC}"; then
-	AC_CHECK_PROGS(CC,cc)
-fi
-
-dnl The default CFLAGS is empty NOT whatever AC_PROG_CC sets.
-dnl CFLAGS=${CFLAGS-""}
-
-dnl
 dnl AIX Thread requires we use cc_r or xlc_r.
-dnl But only do this IF AIX and CC is zero (initially),
+dnl But only do this IF AIX and CC is not set
-dnl and cc exists and threads are auto|yes|posix.
+dnl and threads are auto|yes|posix.
 dnl
 dnl If we find cc_r|xlc_r, force pthreads and assume
 dnl		pthread_create is in $LIBS (ie: don't bring in
 dnl		any additional thread libraries)
 dnl If we do not find cc_r|xlc_r, disable threads
-dnl
-AC_CANONICAL_HOST
-
-case "$host" in
-	*-*-aix*) ol_host_os=aix ;;
-esac
 
 ol_aix_threads=no
-if test -z "$save_CC" -a "$CC" = cc -a "$ol_host_os" = aix ; then
+case "$host" in
+*-*-aix*) dnl all AIX is not a good idea.
+	if test -z "CC" -a "$ol_host_os" = aix ; then
 		case "$ol_with_threads" in
 		auto | yes |  posix) ol_aix_threads=yes ;;
 		esac
-fi
+	fi
+;;
+esac
 
-if test ol_aix_threads = yes ; then
+if test -z "${CC}" -a $ol_aix_threads = yes ; then
-	CC=
+	AC_CHECK_PROGS(CC,cc_r xlc_r cc)
-	AC_CHECK_PROGS(CC,cc_r xlc_r)
 
-	if test "$CC" ; then
+	if test "$CC" = cc ; then
+		dnl no CC! don't allow --with-threads
 		if test $ol_with_threads != auto ; then
 			AC_MSG_ERROR([--with-threads requires cc_r (or other suitable compiler) on AIX])
 		else
 			AC_MSG_WARN([disabling threads, no cc_r on AIX])
 		fi
 		ol_with_threads=no
-	else
+
+	elif test "$CC" ; then
 		ol_with_threads=posix
 		ol_cv_pthread_create=yes
 	fi
 fi
 
+if test -z "${CC}"; then
+	AC_CHECK_PROGS(CC,cc)
+fi
+
+dnl The default CFLAGS is empty NOT whatever AC_PROG_CC sets.
+dnl (for now, let autoconf sort this out)
+dnl CFLAGS=${CFLAGS-""}
+
 AM_PROG_LIBTOOL
 dnl AC_PROG_MAKE_SET