- if test $utils_cv_func_mkstemp_limitations = yes; then
- AC_LIBOBJ(mkstemp)
- AC_LIBOBJ(tempname)
- AC_DEFINE(mkstemp, rpl_mkstemp,
- [Define to rpl_mkstemp if the replacement function should be used.])
+ AC_CHECK_FUNCS_ONCE([mkstemp])
+ if test $ac_cv_func_mkstemp = yes; then
+ AC_CACHE_CHECK([for working mkstemp],
+ [gl_cv_func_working_mkstemp],
+ [
+ mkdir conftest.mkstemp
+ AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM(
+ [AC_INCLUDES_DEFAULT],
+ [[int result = 0;
+ int i;
+ off_t large = (off_t) 4294967295u;
+ if (large < 0)
+ large = 2147483647;
+ umask (0);
+ for (i = 0; i < 70; i++)
+ {
+ char templ[] = "conftest.mkstemp/coXXXXXX";
+ int (*mkstemp_function) (char *) = mkstemp;
+ int fd = mkstemp_function (templ);
+ if (fd < 0)
+ result |= 1;
+ else
+ {
+ struct stat st;
+ if (lseek (fd, large, SEEK_SET) != large)
+ result |= 2;
+ if (fstat (fd, &st) < 0)
+ result |= 4;
+ else if (st.st_mode & 0077)
+ result |= 8;
+ if (close (fd))
+ result |= 16;
+ }
+ }
+ return result;]])],
+ [gl_cv_func_working_mkstemp=yes],
+ [gl_cv_func_working_mkstemp=no],
+ [gl_cv_func_working_mkstemp="guessing no"])
+ rm -rf conftest.mkstemp
+ ])
+ if test "$gl_cv_func_working_mkstemp" != yes; then
+ REPLACE_MKSTEMP=1
+ AC_LIBOBJ([mkstemp])
+ gl_PREREQ_MKSTEMP
+ fi
+ else
+ HAVE_MKSTEMP=0
+ AC_LIBOBJ([mkstemp])