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authorBruno Haible <bruno@clisp.org>2023-04-29 03:24:43 +0200
committerBruno Haible <bruno@clisp.org>2023-04-29 03:24:43 +0200
commit44480828308ad08a1b37e2d96a72ababee5f7174 (patch)
tree538aeea43d9c61b518c28a1fdf19f684e3d7f04c /m4
parentf3a1142689247303b66b663a6394a473d6298aaa (diff)
downloadgnulib-44480828308ad08a1b37e2d96a72ababee5f7174.tar.gz
stdio: Avoid different configure results in different testdirs.
* m4/stdio_h.m4 (gl_STDIO_H_EARLY): New macro, extracted from gl_STDIO_H. (gl_STDIO_H): Move the code that sets __USE_MINGW_ANSI_STDIO to gl_STDIO_H_EARLY. * modules/stdio (configure.ac-early): New section.
Diffstat (limited to 'm4')
-rw-r--r--m4/stdio_h.m421
1 files changed, 18 insertions, 3 deletions
diff --git a/m4/stdio_h.m4 b/m4/stdio_h.m4
index 342b7d1f20..dbfa0d5d61 100644
--- a/m4/stdio_h.m4
+++ b/m4/stdio_h.m4
@@ -1,12 +1,22 @@
-# stdio_h.m4 serial 62
+# stdio_h.m4 serial 63
dnl Copyright (C) 2007-2023 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_ONCE([gl_STDIO_H],
+AC_DEFUN([gl_STDIO_H_EARLY],
[
- AC_REQUIRE([gl_STDIO_H_DEFAULTS])
+ dnl Defining __USE_MINGW_ANSI_STDIO to 1 must be done early, because
+ dnl the results of several configure tests depend on it: The tests
+ dnl - checking whether snprintf returns a byte count as in C99...
+ dnl - checking whether snprintf truncates the result as in C99...
+ dnl - checking whether printf supports the 'F' directive...
+ dnl - checking whether printf supports the grouping flag...
+ dnl - checking whether printf supports the zero flag correctly...
+ dnl - checking whether printf supports infinite 'double' arguments...
+ dnl - checking whether printf supports large precisions...
+ dnl report 'yes' if __USE_MINGW_ANSI_STDIO is 1 but 'no' if
+ dnl __USE_MINGW_ANSI_STDIO is not set.
AH_VERBATIM([MINGW_ANSI_STDIO],
[/* Use GNU style printf and scanf. */
#ifndef __USE_MINGW_ANSI_STDIO
@@ -14,6 +24,11 @@ AC_DEFUN_ONCE([gl_STDIO_H],
#endif
])
AC_DEFINE([__USE_MINGW_ANSI_STDIO])
+])
+
+AC_DEFUN_ONCE([gl_STDIO_H],
+[
+ AC_REQUIRE([gl_STDIO_H_DEFAULTS])
gl_NEXT_HEADERS([stdio.h])
dnl Determine whether __USE_MINGW_ANSI_STDIO makes printf and