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| author | Paul Eggert <eggert@cs.ucla.edu> | 2014-10-18 23:33:40 -0700 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2014-10-18 23:33:40 -0700 |
| commit | 821339c944eea52105777c5f52bdc3cf477b475c (patch) | |
| tree | 373d674f6993de76acad4ac09eaf3fc457815bf1 /m4/readlinkat.m4 | |
| parent | 265331858f3cd63f3ab593461ca4f2931780ba5e (diff) | |
| download | emacs-821339c944eea52105777c5f52bdc3cf477b475c.tar.gz | |
Merge from gnulib.
This incorporates:
2014-10-18 readlinkat: port to AIX 7.1
2014-10-07 fcntl: fix error reporting by dupfd
* lib/fcntl.c, lib/readlinkat.c, lib/unistd.in.h, m4/readlinkat.m4:
* m4/unistd_h.m4: Update from gnulib.
* lib/gnulib.mk, m4/gnulib-comp.m4: Regenerate.
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 ]) |