openpbs/m4/with_libz.m4

#
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AC_DEFUN([PBS_AC_WITH_LIBZ],
[
  AC_ARG_WITH([libz],
    AS_HELP_STRING([--with-libz=DIR],
      [Specify the directory where libz is installed.]
    )
  )
  AS_IF([test "x$with_libz" != "x"],
    libz_dir=["$with_libz"],
    libz_dir=["/lib64"]
  )
  AC_MSG_CHECKING([for libz])
  AS_IF([test "$libz_dir" = "/lib64"],
    # Using system installed libz
	libz_inc=""
	AS_IF([test -r "/lib64/libz.so" -o -r "/usr/lib64/libz.so" -o -r "/usr/lib/x86_64-linux-gnu/libz.so"],
    	[libz_lib="-lz"],
      AC_MSG_ERROR([libz shared object library not found.])
	),

	# Using developer installed libz
    AS_IF([test -r "$libz_dir/include/zlib.h"],
      [libz_include="$libz_dir/include"],
      AC_MSG_ERROR([libz headers not found.])
    )
	libz_inc="-I$libz_include"
    AS_IF([test -r "${libz_dir}/lib64/libz.a"],
      [libz_lib="${libz_dir}/lib64/libz.a"],
      AS_IF([test -r "${libz_dir}/lib/libz.a"],
        [libz_lib="${libz_dir}/lib/libz.a"],
        AC_MSG_ERROR([libz not found.])
      )
    )
  )
  AC_MSG_RESULT([$libz_dir])
  AC_SUBST(libz_inc)
  AC_SUBST(libz_lib)
  AC_DEFINE([PBS_COMPRESSION_ENABLED], [], [Defined when libz is available])
])