+ AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM([[
+# include <stdio.h>
+# include <stdlib.h>
+ ]],
+ [[int result = 0;
+ if (rename ("conftest.f1/", "conftest.d3") == 0)
+ result |= 1;
+ if (rename ("conftest.d1/", "conftest.d2") != 0)
+ result |= 2;
+#if HAVE_LSTAT
+ if (rename ("conftest.lnk/", "conftest.f") == 0)
+ result |= 4;
+#endif
+ return result;
+ ]])],
+ [gl_cv_func_rename_slash_src_works=yes],
+ [gl_cv_func_rename_slash_src_works=no],
+ dnl When crosscompiling, assume rename is broken.
+ [gl_cv_func_rename_slash_src_works="guessing no"])
+ rm -rf conftest.f conftest.f1 conftest.d1 conftest.d2 conftest.d3 conftest.lnk
+ ])
+ if test "x$gl_cv_func_rename_slash_src_works" != xyes; then
+ REPLACE_RENAME=1
+ AC_DEFINE([RENAME_TRAILING_SLASH_SOURCE_BUG], [1],
+ [Define if rename does not correctly handle slashes on the source
+ argument, such as on Solaris 9 or cygwin 1.5.])
+ fi
+
+ dnl NetBSD 1.6 and cygwin 1.5.x mistakenly reduce hard link count
+ dnl on rename("h1","h2").
+ dnl This bug requires stat'ting targets prior to attempting rename.
+ AC_CACHE_CHECK([whether rename manages hard links correctly],
+ [gl_cv_func_rename_link_works],
+ [rm -rf conftest.f conftest.f1
+ if touch conftest.f && ln conftest.f conftest.f1 &&
+ set x `ls -i conftest.f conftest.f1` && test "$2" = "$4"; then
+ AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM([[
+# include <stdio.h>
+# include <stdlib.h>
+# include <unistd.h>
+ ]],
+ [[int result = 0;
+ if (rename ("conftest.f", "conftest.f1"))
+ result |= 1;
+ if (unlink ("conftest.f1"))
+ result |= 2;
+ if (rename ("conftest.f", "conftest.f"))
+ result |= 4;
+ if (rename ("conftest.f1", "conftest.f1") == 0)
+ result |= 8;
+ return result;
+ ]])],
+ [gl_cv_func_rename_link_works=yes],
+ [gl_cv_func_rename_link_works=no],
+ dnl When crosscompiling, assume rename is broken.
+ [gl_cv_func_rename_link_works="guessing no"])
+ else
+ gl_cv_func_rename_link_works="guessing no"