AC_DEFUN(DC_PCSC_HEADERS, [ SAVE_CFLAGS="${CFLAGS}" SAVE_CPPFLAGS="${CPPFLAGS}" ADD_CFLAGS="" ADD_CPPFLAGS="" 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 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${headerdir}" ADD_CPPFLAGS=" -I${headerdir}" break ]) done if test -n "${ADD_CFLAGS}" -o -n "${ADD_CPPFLAGS}"; then break fi done CFLAGS="${SAVE_CFLAGS}${ADD_CFLAGS}" CPPFLAGS="${SAVE_CPPFLAGS}${ADD_CPPFLAGS}" ])