| dnl Configure-time switch with default |
| dnl |
| dnl Each switch defines an --enable-FOO and --disable-FOO option in |
| dnl the resulting configure script. |
| dnl |
| dnl Usage: |
| dnl smr_SWITCH(name, description, default, pos-def, neg-def) |
| dnl |
| dnl where: |
| dnl |
| dnl name name of switch; generates --enable-name & --disable-name |
| dnl options |
| dnl description help string is set to this prefixed by "enable" or |
| dnl "disable", whichever is the non-default value |
| dnl default either "on" or "off"; specifies default if neither |
| dnl --enable-name nor --disable-name is specified |
| dnl pos-def a symbol to AC_DEFINE if switch is on (optional) |
| dnl neg-def a symbol to AC_DEFINE if switch is off (optional) |
| dnl |
| AC_DEFUN(smr_SWITCH, [ |
| AC_MSG_CHECKING(whether to enable $2) |
| AC_ARG_ENABLE( |
| $1, |
| ifelse($3, on, |
| [ --disable-[$1] disable [$2]], |
| [ --enable-[$1] enable [$2]]), |
| [ if test "$enableval" = yes; then |
| AC_MSG_RESULT(yes) |
| ifelse($4, , , AC_DEFINE($4)) |
| else |
| AC_MSG_RESULT(no) |
| ifelse($5, , , AC_DEFINE($5)) |
| fi ], |
| ifelse($3, on, |
| [ AC_MSG_RESULT(yes) |
| ifelse($4, , , AC_DEFINE($4)) ], |
| [ AC_MSG_RESULT(no) |
| ifelse($5, , , AC_DEFINE($5))]))]) |
| |
| dnl |
| dnl Examine size_t and define SIZE_T_IS_UINT, if size_t is an unsigned int |
| dnl |
| AC_DEFUN(OJ_SIZE_T_IS_UINT,[ |
| AC_REQUIRE([AC_TYPE_SIZE_T]) |
| AC_MSG_CHECKING(whether size_t is unsigned int) |
| ac_cv_size_t_is_uint=no |
| AC_LANG_SAVE |
| AC_LANG_CPLUSPLUS |
| AC_TRY_COMPILE([#include <unistd.h> |
| |
| template<class T> class foo { }; |
| |
| ], [ |
| foo<size_t> x; |
| foo<unsigned int> y; |
| x = y; |
| ],ac_cv_size_t_is_uint=yes) |
| AC_LANG_RESTORE |
| AC_MSG_RESULT($ac_cv_size_t_is_uint) |
| test "$ac_cv_size_t_is_uint" = "yes" && AC_DEFINE(SIZE_T_IS_UINT) |
| ]) |
