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m4/boinc_check_lib_with.m4

 

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AC_DEFUN([BOINC_CHECK_LIB_WITH],[

 

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dnl arguments  $1 library name (-l$1)

 

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dnl            $2 function name

 

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dnl            $3 variable to append LDFLAGS to

 

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  AC_LANG_PUSH(C)

 

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  _sv_libs="$LIBS"

 

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  AC_ARG_WITH([lib$1],

 

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    AC_HELP_STRING([--with-lib$1=DIR],[look for the $1 library in DIR]),

 

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   [_lib_with=$withval],[_lib_with=no])

 

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  _NEW_LDFLAGS=

 

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  if test "x${_lib_with}" != "xno" ; then

 

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    if test -d $_lib_with/. ; then

 

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      _NEW_LDFLAGS="${_NEW_LDFLAGS} -L${_lib_with}"

 

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      LIBS="${LIBS} ${_NEW_LDFLAGS}"

 

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    fi

 

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    AC_CHECK_LIB([$1],[$2],[_lib_found=yes])

 

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    if test "x${_lib_found}" = "xyes" ; then

 

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      if test -f ${_lib_with} ; then

 

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        _NEW_LDFLAGS="${_NEW_LDFLAGS} ${_lib_with}"

 

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      elif test -h ${_lib_with} -a ! -d ${_lib_with}/. ; then

 

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        _NEW_LDFLAGS="${_NEW_LDFLAGS} ${_lib_with}"

 

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      else

 

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        _NEW_LDFLAGS="${_NEW_LDFLAGS} -l$1"

 

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      fi

 

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      $3="${$3} ${_NEW_LDFLAGS}"

 

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    fi

 

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  fi

 

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  LIBS="${_sv_libs}"

 

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  AC_LANG_POP(C)

 

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])

 

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