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AC_DEFUN(DC_PCSC_HEADERS, [
	SAVE_CFLAGS="${CFLAGS}"
	SAVE_CPPFLAGS="${CPPFLAGS}"
	ADD_CFLAGS=""
	ADD_CPPFLAGS=""

	found_pcsclite=0
	found_winscard=0
	found_wintypes=0

	for headerpath in /usr/include /usr/local/include /usr/cac/include; do
		for subdir in smartcard PCSC pcsc pcsclite ""; do
			headerdir="${headerpath}/${subdir}"
			CFLAGS="${SAVE_CFLAGS} -I${headerdir}"
			CPPFLAGS="${SAVE_CPPFLAGS} -I${headerdir}"

			unset ac_cv_header_pcsclite_h
			unset ac_cv_header_winscard_h
			unset ac_cv_header_wintypes_h

			just_found_pcsclite=0
			just_found_winscard=0
			just_found_wintypes=0

			AC_CHECK_HEADER(pcsclite.h, [
				AC_DEFINE(HAVE_PCSCLITE_H, [1], [Define if you have the PCSC-Lite header file (you should)])

				ADD_CFLAGS=" -I${headerdir}"
				found_pcsclite=1
				ADD_CPPFLAGS=" -I${headerdir}"

				just_found_pcsclite=1
				break
			])

			AC_CHECK_HEADER(winscard.h, [
				AC_DEFINE(HAVE_WINSCARD_H, [1], [Define if you have the PCSC-Lite header file (you should)])

				found_winscard=1
				just_found_winscard=1
			])

			AC_CHECK_HEADER(wintypes.h, [
				AC_DEFINE(HAVE_WINTYPES_H, [1], [Define if you have the PCSC-Lite header file (you should)])

				found_wintypes=1
				just_found_wintypes=1
			])

			if test "${just_found_pcsclite}" = 1 -a "${just_found_winscard}" = 1 -a "${just_found_wintypes}" = 1; then
				ADD_CFLAGS=" -I${headerdir}"
				ADD_CPPFLAGS=" -I${headerdir}"
			fi

			if test "${found_pcsclite}" = 1 -a "${found_winscard}" = 1 -a "${found_wintypes}" = 1; then
				break
			])
			fi
		done

		if test -n "${ADD_CFLAGS}" -o -n "${ADD_CPPFLAGS}"; then
			break
		fi
	done

	CFLAGS="${SAVE_CFLAGS}${ADD_CFLAGS}"
	CPPFLAGS="${SAVE_CPPFLAGS}${ADD_CPPFLAGS}"

	unset ac_cv_header_winscard_h
	AC_CHECK_HEADER(winscard.h, [
		AC_DEFINE(HAVE_WINSCARD_H, [1], [Define if you have the PCSC-Lite header file (you should)])
	], [
		AC_MSG_WARN([unable to find winscard.h from PC/SC, compilation will likely fail.])
	])
])

AC_DEFUN(DC_PCSC_LIBS, [
	foundlib="0"
	for lib in pcsclite pcsc-lite pcsc; do
		AC_CHECK_LIB(${lib}, SCardEstablishContext, [
			LIBS="${LIBS} -l${lib}"