diff options
Diffstat (limited to 'm4/obstack.m4')
| -rw-r--r-- | m4/obstack.m4 | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/m4/obstack.m4 b/m4/obstack.m4 new file mode 100644 index 0000000..3a26cba --- /dev/null +++ b/m4/obstack.m4 @@ -0,0 +1,33 @@ +# See if we need to provide obstacks. + +dnl Copyright 1996-2022 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl Autoconf's AC_FUNC_OBSTACK is marked obsolete since version 2.70. +dnl We provide our own macro here. + +AC_DEFUN([gl_FUNC_OBSTACK], +[ + AC_CACHE_CHECK([for obstacks that work with any size object], + [gl_cv_func_obstack], + [AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [[#include "obstack.h" + void *obstack_chunk_alloc (size_t n) { return 0; } + void obstack_chunk_free (void *p) { } + /* Check that an internal function returns size_t, not int. */ + size_t _obstack_memory_used (struct obstack *); + ]], + [[struct obstack mem; + obstack_init (&mem); + obstack_free (&mem, 0); + ]])], + [gl_cv_func_obstack=yes], + [gl_cv_func_obstack=no])]) + if test "$gl_cv_func_obstack" = yes; then + AC_DEFINE([HAVE_OBSTACK], 1, + [Define to 1 if the system has obstacks that work with any size object.]) + fi +]) |