diff options
Diffstat (limited to 'm4/vasnprintf.m4')
| -rw-r--r-- | m4/vasnprintf.m4 | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/m4/vasnprintf.m4 b/m4/vasnprintf.m4 index 32ea985b3..da0a6d9ef 100644 --- a/m4/vasnprintf.m4 +++ b/m4/vasnprintf.m4 @@ -1,4 +1,4 @@ -# vasnprintf.m4 serial 32 +# vasnprintf.m4 serial 34 dnl Copyright (C) 2002-2004, 2006-2011 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -63,7 +63,10 @@ AC_DEFUN_ONCE([gl_PREREQ_VASNPRINTF], AC_CHECK_FUNCS([snprintf strnlen wcslen wcsnlen mbrtowc wcrtomb]) dnl Use the _snprintf function only if it is declared (because on NetBSD it dnl is defined as a weak alias of snprintf; we prefer to use the latter). - AC_CHECK_DECLS([_snprintf], , , [#include <stdio.h>]) + AC_CHECK_DECLS([_snprintf], , , [[#include <stdio.h>]]) + dnl Knowing DBL_EXPBIT0_WORD and DBL_EXPBIT0_BIT enables an optimization + dnl in the code for NEED_PRINTF_LONG_DOUBLE || NEED_PRINTF_DOUBLE. + AC_REQUIRE([gl_DOUBLE_EXPONENT_LOCATION]) dnl We can avoid a lot of code by assuming that snprintf's return value dnl conforms to ISO C99. So check that. AC_REQUIRE([gl_SNPRINTF_RETVAL_C99]) |