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