nut/m4/nut_check_libltdl.m4

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2012-01-24 10:22:33 +00:00
dnl Check for LIBLTDL compiler flags. On success, set nut_have_libltdl="yes"
dnl and set LIBLTDL_CFLAGS and LIBLTDL_LIBS. On failure, set
dnl nut_have_libltdl="no". This macro can be run multiple times, but will
dnl do the checking only once.
AC_DEFUN([NUT_CHECK_LIBLTDL],
[
if test -z "${nut_have_libltdl_seen}"; then
nut_have_libltdl_seen=yes
dnl save LIBS
LIBS_ORIG="${LIBS}"
LIBS=""
AC_CHECK_HEADERS(ltdl.h, [nut_have_libltdl=yes], [nut_have_libltdl=no], [AC_INCLUDES_DEFAULT])
AC_SEARCH_LIBS(lt_dlinit, ltdl, [], [nut_have_libltdl=no])
if test "${nut_have_libltdl}" = "yes"; then
AC_DEFINE(HAVE_LIBLTDL, 1, [Define to enable libltdl support])
LIBLTDL_CFLAGS=""
LIBLTDL_LIBS="${LIBS}"
fi
dnl restore original LIBS
LIBS="${LIBS_ORIG}"
fi
])