configure: Don't use pkg-config without tool prefix when cross-compiling.

aclocal.m4

@@ -22,6 +22,21 @@ dnl configuration script generated by Autoconf, you may include it
 dnl under the same distribution terms that you use for the rest of
 dnl that program.
 
+dnl WINE_CHECK_HOST_TOOL(VARIABLE, PROG-TO-CHECK-FOR, [VALUE-IF-NOT-FOUND], [PATH])
+dnl
+dnl Like AC_CHECK_TOOL but without the broken fallback to non-prefixed name
+dnl
+AC_DEFUN([WINE_CHECK_HOST_TOOL],
+[if test -n "$ac_tool_prefix"; then
+  AC_CHECK_PROG([$1],[${ac_tool_prefix}$2],[${ac_tool_prefix}$2],,[$4])
+fi
+if test -n "$ac_cv_prog_$1"; then
+  $1="$ac_cv_prog_$1"
+elif test "$cross_compiling" != yes; then
+  unset ac_cv_prog_$1
+  AC_CHECK_PROG([$1],[$2],[$2],[$3],[$4])
+fi])
+
 dnl **** Initialize the programs used by other checks ****
 dnl
 dnl Usage: WINE_PATH_SONAME_TOOLS
@@ -32,7 +47,7 @@ AC_DEFUN([WINE_PATH_SONAME_TOOLS],
 AC_CHECK_TOOL(READELF,[readelf],true)])
 
 AC_DEFUN([WINE_PATH_PKG_CONFIG],
-[AC_CHECK_TOOL(PKG_CONFIG,[pkg-config])])
+[WINE_CHECK_HOST_TOOL(PKG_CONFIG,[pkg-config])])
 
 dnl **** Extract the soname of a library ****
 dnl

configure

@@ -5217,17 +5217,19 @@ fi
 
 
 fi
-if test -z "$ac_cv_prog_PKG_CONFIG"; then
-  ac_ct_PKG_CONFIG=$PKG_CONFIG
+if test -n "$ac_cv_prog_PKG_CONFIG"; then
+  PKG_CONFIG="$ac_cv_prog_PKG_CONFIG"
+elif test "$cross_compiling" != yes; then
+  unset ac_cv_prog_PKG_CONFIG
   # Extract the first word of "pkg-config", so it can be a program name with args.
 set dummy pkg-config; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
 $as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_PKG_CONFIG+:} false; then :
+if ${ac_cv_prog_PKG_CONFIG+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  if test -n "$ac_ct_PKG_CONFIG"; then
-  ac_cv_prog_ac_ct_PKG_CONFIG="$ac_ct_PKG_CONFIG" # Let the user override the test.
+  if test -n "$PKG_CONFIG"; then
+  ac_cv_prog_PKG_CONFIG="$PKG_CONFIG" # Let the user override the test.
 else
 as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
 for as_dir in $PATH
@@ -5236,7 +5238,7 @@ do
   test -z "$as_dir" && as_dir=.
     for ac_exec_ext in '' $ac_executable_extensions; do
   if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_prog_ac_ct_PKG_CONFIG="pkg-config"
+    ac_cv_prog_PKG_CONFIG="pkg-config"
     $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
   fi
@@ -5246,30 +5248,17 @@ IFS=$as_save_IFS
 
 fi
 fi
-ac_ct_PKG_CONFIG=$ac_cv_prog_ac_ct_PKG_CONFIG
-if test -n "$ac_ct_PKG_CONFIG"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_PKG_CONFIG" >&5
-$as_echo "$ac_ct_PKG_CONFIG" >&6; }
+PKG_CONFIG=$ac_cv_prog_PKG_CONFIG
+if test -n "$PKG_CONFIG"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $PKG_CONFIG" >&5
+$as_echo "$PKG_CONFIG" >&6; }
 else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
 fi
 
-  if test "x$ac_ct_PKG_CONFIG" = x; then
-    PKG_CONFIG=""
-  else
-    case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
-    PKG_CONFIG=$ac_ct_PKG_CONFIG
-  fi
-else
-  PKG_CONFIG="$ac_cv_prog_PKG_CONFIG"
-fi
 
+fi
 
 if test "x$enable_maintainer_mode" != "xyes"
 then