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AC_SUBST(PAM_LIBS)
AC_SUBST(PAM_MISC_LIBS)
AC_CHECK_HEADERS([security/pam_appl.h security/pam_modules.h],
[AC_CHECK_LIB([pam], [pam_get_item],
[PAM_LIBS="-lpam"],
[AC_MSG_ERROR([PAM must support pam_get_item])])],
[AC_MSG_ERROR([PAM development libraries not installed])]
)
AC_CHECK_HEADERS([security/pam_ext.h security/pam_modutil.h])
AC_CHECK_HEADERS([security/pam_misc.h security/_pam_macros.h])
AC_CHECK_HEADERS([security/openpam.h],,,[
#ifdef HAVE_SECURITY_PAM_APPL_H
#include <security/pam_appl.h>
#endif
])
AC_CHECK_LIB([pam_misc], [misc_conv],
[PAM_MISC_LIBS="-lpam_misc"])
dnl save LIBS to restore later
save_LIBS="$LIBS"
LIBS="$PAM_LIBS"
AC_CHECK_FUNCS(pam_modutil_getlogin pam_vsyslog)
dnl restore LIBS
LIBS="$save_LIBS"
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