X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=m4%2Fstdio_h.m4;h=f60cc2156e00cccbbc135fd4cc3e1d4b63be3fba;hb=d30babc23b4f25be970ada2e63a50220a3672281;hp=d15913a3ca02e81bbe79791cbb783f2e7e275172;hpb=4aa85f09e755fc827cd5ab6225f20c83cd42245d;p=debian%2Ftar diff --git a/m4/stdio_h.m4 b/m4/stdio_h.m4 index d15913a3..f60cc215 100644 --- a/m4/stdio_h.m4 +++ b/m4/stdio_h.m4 @@ -1,14 +1,41 @@ -# stdio_h.m4 serial 43 -dnl Copyright (C) 2007-2014 Free Software Foundation, Inc. +# stdio_h.m4 serial 46 +dnl Copyright (C) 2007-2015 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. AC_DEFUN([gl_STDIO_H], [ + dnl For __USE_MINGW_ANSI_STDIO + AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) + AC_REQUIRE([gl_STDIO_H_DEFAULTS]) gl_NEXT_HEADERS([stdio.h]) + dnl Determine whether __USE_MINGW_ANSI_STDIO makes printf and + dnl inttypes.h behave like gnu instead of system; we must give our + dnl printf wrapper the right attribute to match. + AC_CACHE_CHECK([which flavor of printf attribute matches inttypes macros], + [gl_cv_func_printf_attribute_flavor], + [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ + #define __STDC_FORMAT_MACROS 1 + #include + #include + /* For non-mingw systems, compilation will trivially succeed. + For mingw, compilation will succeed for older mingw (system + printf, "I64d") and fail for newer mingw (gnu printf, "lld"). */ + #if ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__) && \ + (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) + extern char PRIdMAX_probe[sizeof PRIdMAX == sizeof "I64d" ? 1 : -1]; + #endif + ]])], [gl_cv_func_printf_attribute_flavor=system], + [gl_cv_func_printf_attribute_flavor=gnu])]) + if test "$gl_cv_func_printf_attribute_flavor" = gnu; then + AC_DEFINE([GNULIB_PRINTF_ATTRIBUTE_FLAVOR_GNU], [1], + [Define to 1 if printf and friends should be labeled with + attribute "__gnu_printf__" instead of "__printf__"]) + fi + dnl No need to create extra modules for these functions. Everyone who uses dnl likely needs them. GNULIB_FSCANF=1