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# libcap-ng.m4 - Checks for the libcap-ng support
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# Copyright (c) 2009 Steve Grubb sgrubb@redhat.com
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AC_DEFUN([LIBCAP_NG_PATH],
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[ --with-libcap-ng=[auto/yes/no] Add Libcap-ng support [default=auto]],,
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# Check for Libcap-ng API
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if test x$with_libcap_ng = xno ; then
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# Start by checking for header file
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AC_CHECK_HEADER(cap-ng.h, capng_headers=yes, capng_headers=no)
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# See if we have libcap-ng library
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AC_CHECK_LIB(cap-ng, capng_clear,
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CAPNG_LDADD=-lcap-ng,)
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# Check results are usable
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if test x$with_libcap_ng = xyes -a x$CAPNG_LDADD = x ; then
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AC_MSG_ERROR(libcap-ng support was requested and the library was not found)
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if test x$CAPNG_LDADD != x -a $capng_headers = no ; then
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AC_MSG_ERROR(libcap-ng libraries found but headers are missing)
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AC_MSG_CHECKING(whether to use libcap-ng)
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if test x$CAPNG_LDADD != x ; then
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AC_DEFINE(HAVE_LIBCAP_NG,1,[libcap-ng support])