+ else
+ AC_CACHE_CHECK([whether symlinkat handles trailing slash correctly],
+ [gl_cv_func_symlinkat_works],
+ [AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <fcntl.h>
+ #include <unistd.h>
+ ]],
+ [[int result = 0;
+ if (!symlinkat ("a", AT_FDCWD, "conftest.link/"))
+ result |= 1;
+ if (symlinkat ("conftest.f", AT_FDCWD, "conftest.lnk2"))
+ result |= 2;
+ else if (!symlinkat ("a", AT_FDCWD, "conftest.lnk2/"))
+ result |= 4;
+ return result;
+ ]])],
+ [gl_cv_func_symlinkat_works=yes],
+ [gl_cv_func_symlinkat_works=no],
+ [case "$host_os" in
+ # Guess yes on glibc systems.
+ *-gnu*) gl_cv_func_symlinkat_works="guessing yes" ;;
+ # If we don't know, assume the worst.
+ *) gl_cv_func_symlinkat_works="guessing no" ;;
+ esac
+ ])
+ rm -f conftest.f conftest.link conftest.lnk2])
+ case "$gl_cv_func_symlinkat_works" in
+ *yes) ;;
+ *)
+ REPLACE_SYMLINKAT=1
+ ;;
+ esac