1dnl Check if --with-expat[=PREFIX] is specified and
2dnl Expat >= 1.95.0 is installed in the system.
3dnl If yes, substitute EXPAT_CFLAGS, EXPAT_LIBS with regard to
4dnl the specified PREFIX and set with_expat to PREFIX, or 'yes' if PREFIX
5dnl has not been specified. Also HAVE_LIBEXPAT, HAVE_EXPAT_H are defined.
6dnl If --with-expat has not been specified, set with_expat to 'no'.
7dnl In addition, an Automake conditional EXPAT_INSTALLED is set accordingly.
8dnl This is necessary to adapt a whole lot of packages that have expat
9dnl bundled as a static library.
10AC_DEFUN([AM_WITH_EXPAT],
11[ AC_ARG_WITH(expat,
12	      [  --with-expat=PREFIX     Use system Expat library],
13	      , with_expat=no)
14
15  AM_CONDITIONAL(EXPAT_INSTALLED, test $with_expat != no)
16
17  EXPAT_CFLAGS=
18  EXPAT_LIBS=
19  if test $with_expat != no; then
20	if test $with_expat != yes; then
21		EXPAT_CFLAGS="-I$with_expat/include"
22		EXPAT_LIBS="-L$with_expat/lib"
23	fi
24	AC_CHECK_LIB(expat, XML_ParserCreate,
25		     [ EXPAT_LIBS="$EXPAT_LIBS -lexpat"
26		       expat_found=yes ],
27		     [ expat_found=no ],
28		     "$EXPAT_LIBS")
29	if test $expat_found = no; then
30		AC_MSG_ERROR([Could not find the Expat library])
31	fi
32	expat_save_CFLAGS="$CFLAGS"
33	CFLAGS="$CFLAGS $EXPAT_CFLAGS"
34	AC_CHECK_HEADERS(expat.h, , expat_found=no)
35	if test $expat_found = no; then
36		AC_MSG_ERROR([Could not find expat.h])
37	fi
38	CFLAGS="$expat_save_CFLAGS"
39  fi
40
41  AC_SUBST(EXPAT_CFLAGS)
42  AC_SUBST(EXPAT_LIBS)
43])
44