diff options
Diffstat (limited to 'm4/readlinkat.m4')
| -rw-r--r-- | m4/readlinkat.m4 | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/m4/readlinkat.m4 b/m4/readlinkat.m4 index 65c0689c114..f9ed9436af6 100644 --- a/m4/readlinkat.m4 +++ b/m4/readlinkat.m4 @@ -1,4 +1,4 @@ -# serial 3 +# serial 4 # See if we need to provide readlinkat replacement. dnl Copyright (C) 2009-2014 Free Software Foundation, Inc. @@ -15,5 +15,18 @@ AC_DEFUN([gl_FUNC_READLINKAT], AC_CHECK_FUNCS_ONCE([readlinkat]) if test $ac_cv_func_readlinkat = no; then HAVE_READLINKAT=0 + else + AC_CACHE_CHECK([whether readlinkat signature is correct], + [gl_cv_decl_readlinkat_works], + [AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [[#include <unistd.h> + /* Check whether original declaration has correct type. */ + ssize_t readlinkat (int, char const *, char *, size_t);]])], + [gl_cv_decl_readlinkat_works=yes], + [gl_cv_decl_readlinkat_works=no])]) + if test "$gl_cv_decl_readlink_works" != yes; then + REPLACE_READLINKAT=1 + fi fi ]) |