--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/acx_include_dirs.m4	Thu Sep 15 19:52:50 2005 +0000
@@ -0,0 +1,35 @@
+dnl @synopsis ACX_CHECK_HEADER_IN_DIRS (HEADER, DIR-LIST, [
+dnl			ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND[, MESSAGE]]])
+dnl
+dnl This macro looks for a header file in the include directories
+dnl and in the sub-directories specified by DIR-LIST.
+dnl
+dnl This macro requires autoconf 2.50 or later.
+dnl
+dnl @version $Id: acx_include_dirs.m4,v 1.2 2005-09-15 19:52:50 jwe Exp $
+dnl @author David Bateman <dbateman@free.fr>
+dnl
+AC_DEFUN([ACX_CHECK_HEADER_IN_DIRS], [
+AC_PREREQ(2.50)
+acx_include_ok=no
+acx_include_dir=
+
+# First check the header in the base directory
+AC_CHECK_HEADER($1, [acx_include_ok=yes])
+
+# Now check the other directories
+if test x"$acx_include_ok" = xno; then
+  for dir in $2; do
+    AC_CHECK_HEADER(${dir}/$1, [acx_include_ok=yes; acx_include_dir=${dir}; break])
+  done
+fi
+
+# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
+if test x"$acx_include_ok" = xyes; then
+  acx_header=HEADER_`echo $1 | sed -e 's/[^a-zA-Z0-9_]/_/g' \
+    -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
+  ifelse([$3],,AC_DEFINE(${acx_header},$acx_include_dir/$1,[$5]),[$3])
+else
+  $4
+fi
+])dnl ACX_CHECK_HEADER_IN_DIRS