diff options
| author | Matthias Clasen <matthiasc@src.gnome.org> | 2002-11-21 00:35:15 +0000 |
|---|---|---|
| committer | Matthias Clasen <matthiasc@src.gnome.org> | 2002-11-21 00:35:15 +0000 |
| commit | bc54ea6edf251c7623c3afa797da8a67a882fbd2 (patch) | |
| tree | 092d2287894eea17c508f7f0a68e8d9f42a28f6a /acinclude.m4 | |
| parent | dc645ce354f06c93f982a0177951c9f98627d751 (diff) | |
Include a printf implementation supporting C99 snprintf and SUS
positional parameters: (#79488)
* glib/gstrfuncs.c:
* glib/gspawn-win32.c:
* glib/gscanner.c:
* glib/gconvert.c:
* glib/gbacktrace.c: Use _g_printf wrappers.
* glib/gutils.c (g_vsnprintf): Simplify, since we can assume C99
snprintf semantics now.
* glib/gmessages.c (printf_string_upper_bound): No longer needed,
since we can assume C99 snprintf semantics now.
(g_logv): Simplify.
* acinclude.m4 (AC_FUNC_PRINTF_UNIX98): New macro to check wether
printf supports SUS positional parameters.
* configure.in: New option --enable-included-printf to force
compilation of trio; otherwise trio is compiled if the system
printf misses either C99 snprintf semantics of SUS positional
parameters.
* glib/Makefile.am (SUBDIRS): Conditionally compile trio.
(libglib_2_0_la_SOURCES): Add gprintf.c and gprintfint.h.
(glibsubinclude_HEADERS): Add gprintf.h.
* glib/gprintfint.h: New private wrapping either system printf
or trio printf variants in _g_printf wrappers for use inside glib.
* glib/gprintf.h: New public header declaring g_printf variants.
* glib/gprintf.c: Corresponding implementations.
* glib/trio/*: New directory, containing the trio-1.9 sources.
* glib/tmpl/string_utils.sgml: Add note on including gprintf.h,
move some docs inline.
* glib/glib-sections.txt: Add g_printf, g_vprintf, g_fprintf,
g_vfprintf, g_sprintf, g_vsprintf.
Diffstat (limited to 'acinclude.m4')
| -rw-r--r-- | acinclude.m4 | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/acinclude.m4 b/acinclude.m4 index 4fe1e02fb..a969c7037 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -327,3 +327,37 @@ if test $ac_cv_func_vsnprintf_c99 = yes; then fi ])# AC_FUNC_VSNPRINTF_C99 + +dnl @synopsis AC_FUNC_PRINTF_UNIX98 +dnl +dnl Check whether the printf() family supports Unix98 %n$ positional parameters +dnl +AC_DEFUN([AC_FUNC_PRINTF_UNIX98], +[AC_CACHE_CHECK(whether printf supports positional parameters, + ac_cv_func_printf_unix98, +[AC_TRY_RUN( +[#include <stdio.h> + +int +main (void) +{ + char buffer[128]; + + sprintf (buffer, "%2\$d %3\$d %1\$d", 1, 2, 3); + if (strcmp ("2 3 1", buffer) == 0) + exit (0); + exit (1); +}], ac_cv_func_printf_unix98=yes, ac_cv_func_printf_unix98=no, ac_cv_func_printf_unix98=no)]) +dnl Note that the default is to be pessimistic in the case of cross compilation. +dnl If you know that the target printf() supports positional parameters, you can get around +dnl this by setting ac_func_printf_unix98 to yes, as described in the Autoconf manual. +if test $ac_cv_func_printf_unix98 = yes; then + AC_DEFINE(HAVE_UNIX98_PRINTF, 1, + [Define if your printf function family supports positional parameters + as specified by Unix98.]) +fi +])# AC_FUNC_PRINTF_UNIX98 + + + + |