120 lines
2.5 KiB
Text
120 lines
2.5 KiB
Text
dnl @synopsis AX_FUNC_WHICH_GETSPNAM_R
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dnl
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dnl Determines which historical variant of the getspnam_r() call
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dnl (taking four or five arguments) is available on the system
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dnl and sets NEW_SHADOW_API=YES if there are five arguments.
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dnl
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dnl Originally named "AX_FUNC_WHICH_GETHOSTBYNAME_R". Rewritten
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dnl for AX_FUNC_WHICH_GETSPNAM_R
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dnl
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dnl @author Caolan McNamara <caolan@skynet.ie>
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dnl @author Daniel Richard G. <skunk@iskunk.org>
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dnl @version 2006-05-01
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dnl @license LGPL
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AC_DEFUN([AX_FUNC_WHICH_GETSPNAM_R], [
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AC_LANG_PUSH(C)
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AC_MSG_CHECKING([how many arguments getspnam_r() takes])
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AC_CACHE_VAL(ac_cv_func_which_getspnam_r, [
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################################################################
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ac_cv_func_which_getspnam_r=unknown
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#
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# ONE ARGUMENT (sanity check)
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#
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# This should fail, as there is no variant of getspnam_r() that takes
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# a single argument. If it actually compiles, then we can assume that
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# netdb.h is not declaring the function, and the compiler is thereby
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# assuming an implicit prototype. In which case, we're out of luck.
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#
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AC_COMPILE_IFELSE(
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AC_LANG_PROGRAM(
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[[
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#include <sys/types.h>
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#include <shadow.h>
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]],
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[[
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const char *name = "myname";
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getspnam_r(name) /* ; */
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]]),
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ac_cv_func_which_getspnam_r=no)
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#
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# FIVE ARGUMENTS
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#
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if test "$ac_cv_func_which_getspnam_r" = "unknown"; then
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AC_COMPILE_IFELSE(
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AC_LANG_PROGRAM(
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[[
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#include <sys/types.h>
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#include <shadow.h>
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]],
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[[
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char buffer[[]] = { '\0' };
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struct spwd spwdStruct;
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const char *name = "myname";
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getspnam_r(name, &spwdStruct, buffer, sizeof buffer, 0) /* ; */
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]]),
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ac_cv_func_which_getspnam_r=five)
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fi
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#
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# FOUR ARGUMENTS
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#
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if test "$ac_cv_func_which_getspnam_r" = "unknown"; then
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AC_COMPILE_IFELSE(
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AC_LANG_PROGRAM(
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[[
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#include <sys/types.h>
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#include <shadow.h>
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]],
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[[
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char buffer[[]] = { '\0' };
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struct spwd spwdStruct;
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const char *name = "myname";
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getspnam_r(name, &spwdStruct, buffer, sizeof buffer) /* ; */
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]]),
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ac_cv_func_which_getspnam_r=four)
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fi
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################################################################
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]) dnl end AC_CACHE_VAL
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case "$ac_cv_func_which_getspnam_r" in
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five)
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AC_MSG_RESULT([five])
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NEW_SHADOW_API=YES
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;;
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four)
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AC_MSG_RESULT([four])
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;;
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no)
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AC_MSG_RESULT([cannot find function declaration in shadow.h])
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;;
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unknown)
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AC_MSG_RESULT([can't tell])
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;;
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*)
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AC_MSG_ERROR([internal error])
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;;
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esac
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AC_LANG_POP(C)
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]) dnl end AC_DEFUN
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