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diff --git a/Build/source/utils/xindy/xindy-2.5.0/m4/ac_prog_pdflatex.m4 b/Build/source/utils/xindy/xindy-2.5.0/m4/ac_prog_pdflatex.m4
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+dnl @synopsis AC_PROG_PDFLATEX
+dnl
+dnl This macro test if pdflatex is installed. If pdflatex is installed,
+dnl it set $pdflatex to the right value
+dnl
+dnl @category LaTeX
+dnl @author Mathieu Boretti <boretti@bss-network.com>
+dnl @version 2005-01-21
+dnl @license GPLWithACException
+
+AC_DEFUN([AC_PROG_PDFLATEX],[
+AC_CHECK_PROGS(pdflatex,[pdflatex],no)
+export pdflatex;
+if test $pdflatex = "no" ;
+then
+ AC_MSG_ERROR([Unable to find a PDFLaTeX application]);
+fi
+AC_SUBST(pdflatex)
+])