diff options
Diffstat (limited to 'm4/macros/check_map_funcs.m4')
| -rw-r--r-- | m4/macros/check_map_funcs.m4 | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/m4/macros/check_map_funcs.m4 b/m4/macros/check_map_funcs.m4 new file mode 100644 index 000000000000..4e0dc879e5ea --- /dev/null +++ b/m4/macros/check_map_funcs.m4 @@ -0,0 +1,47 @@ +dnl ###################################################################### +dnl check if a map exists (if some library function exists). +dnl Usage: AC_CHECK_MAP_FUNCS(<functions>..., <map>, [<mapsymbol>]) +dnl Check if any of the functions <functions> exist. If any exist, then +dnl define HAVE_MAP_<map>. If <mapsymbol> exits, then defined +dnl HAVE_MAP_<mapsymbol> instead... +AC_DEFUN([AMU_CHECK_MAP_FUNCS], +[ +# find what name to give to the map +if test -n "$3" +then + ac_map_name=$3 +else + ac_map_name=$2 +fi +# store variable name of map +ac_upcase_map_name=`echo $ac_map_name | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'` +ac_safe=HAVE_MAP_$ac_upcase_map_name +# check for cache and set it if needed +AMU_CACHE_CHECK_DYNAMIC(for $ac_map_name maps, +ac_cv_map_$ac_map_name, +[ +# define to "no" by default +eval "ac_cv_map_$ac_map_name=no" +# and look to see if it was found +AC_CHECK_FUNCS($1, +[ + eval "ac_cv_map_$ac_map_name=yes" + break +])]) +# check if need to define variable +if test "`eval echo '$''{ac_cv_map_'$ac_map_name'}'`" = yes +then + AC_DEFINE_UNQUOTED($ac_safe) +# append info_<map>.o object to AMD_INFO_OBJS for automatic compilation +# if first time we add something to this list, then also tell autoconf +# to replace instances of it in Makefiles. + if test -z "$AMD_INFO_OBJS" + then + AMD_INFO_OBJS="info_${ac_map_name}.o" + AC_SUBST(AMD_INFO_OBJS) + else + AMD_INFO_OBJS="$AMD_INFO_OBJS info_${ac_map_name}.o" + fi +fi +]) +dnl ====================================================================== |