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AC_DEFUN([AC_LIBSYSFS], [
dnl searches for libusysfs
dnl IN:
dnl nothing
dnl OUT:
dnl Variables:
dnl libsysfs_libs : stuff for LDFLAGS (or LIBADD)
dnl libsysfs_includes : includes (for CFLAGS)
dnl have_libsysfs : "yes" if libsysfs is supported
have_libsysfs="no"
libsysfs_libs=""
libsysfs_includes=""
AC_CHECK_HEADER([sysfs/libsysfs.h],
[
AC_CHECK_LIB(sysfs,sysfs_get_mnt_path,[
have_libsysfs="yes"
libsysfs_libs="-lsysfs"
AC_SUBST(libsysfs_libs)
AC_SUBST(libsysfs_includes)
],AC_MSG_RESULT([libsysfs not found.]))
],
[AC_MSG_RESULT([sysfs/libsysfs.h not found.])])
if test "x$have_libsysfs" = "xyes"; then
AC_CHECK_MEMBERS([struct sysfs_driver.attrlist],
[HAVE_SYSFS2="yes"], [],
[#include <sysfs/libsysfs.h>])
if test "x$HAVE_SYSFS2" = "xyes"; then
AC_DEFINE_UNQUOTED(HAVE_SYSFS2, 1, [whether sysfs2 is available])
fi
fi
])
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