aria2/m4/libares.m4

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AC_DEFUN([AM_PATH_LIBARES],
[
AC_ARG_WITH([libares-prefix],
[ --with-libares-prefix=PREFIX Prefix where libares installed (optional)],
[libares_prefix=$withval],
[libares_prefix=""])
if test "x$libares_prefix" = "x"; then
libares_prefix="/usr"
fi
libares_prefix_lib=$libares_prefix/lib
libares_prefix_include=$libares_prefix/include
LIBS_save=$LIBS
CPPFLAGS_save=$CPPFLAGS
LIBS="-L$libares_prefix_lib $LIBS"
CPPFLAGS="-I$libares_prefix_include $CPPFLAGS"
AC_CHECK_LIB([ares], [ares_init], [have_libares=yes])
if test "x$have_libares" = "xyes"; then
AC_DEFINE([HAVE_LIBARES], [1], [Define to 1 if you have libares.])
LIBARES_LIBS="-L$libares_prefix_lib -lares"
LIBARES_CPPFLAGS="-I$libares_prefix_include"
AC_SUBST(LIBARES_LIBS)
AC_SUBST(LIBARES_CPPFLAGS)
fi
LIBS=$LIBS_save
CPPFLAGS=$CPPFLAGS_save
])