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-rw-r--r--gnulib-m4/limits-h.m432
1 files changed, 21 insertions, 11 deletions
diff --git a/gnulib-m4/limits-h.m4 b/gnulib-m4/limits-h.m4
index 511dcef..5d5a5bf 100644
--- a/gnulib-m4/limits-h.m4
+++ b/gnulib-m4/limits-h.m4
@@ -1,6 +1,6 @@
dnl Check whether limits.h has needed features.
-dnl Copyright 2016-2018 Free Software Foundation, Inc.
+dnl Copyright 2016-2022 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.
@@ -11,21 +11,31 @@ AC_DEFUN_ONCE([gl_LIMITS_H],
[
gl_CHECK_NEXT_HEADERS([limits.h])
- AC_CACHE_CHECK([whether limits.h has ULLONG_WIDTH etc.],
+ AC_CACHE_CHECK([whether limits.h has WORD_BIT, BOOL_WIDTH etc.],
[gl_cv_header_limits_width],
[AC_COMPILE_IFELSE(
- [AC_LANG_PROGRAM([[#ifndef __STDC_WANT_IEC_60559_BFP_EXT__
- #define __STDC_WANT_IEC_60559_BFP_EXT__ 1
- #endif
- #include <limits.h>
- int ullw = ULLONG_WIDTH;]])],
+ [AC_LANG_PROGRAM(
+ [[#ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+ #define __STDC_WANT_IEC_60559_BFP_EXT__ 1
+ #endif
+ #include <limits.h>
+ long long llm = LLONG_MAX;
+ int wb = WORD_BIT;
+ int ullw = ULLONG_WIDTH;
+ int bw = BOOL_WIDTH;
+ ]])],
[gl_cv_header_limits_width=yes],
[gl_cv_header_limits_width=no])])
if test "$gl_cv_header_limits_width" = yes; then
- LIMITS_H=
+ GL_GENERATE_LIMITS_H=false
else
- LIMITS_H=limits.h
+ GL_GENERATE_LIMITS_H=true
fi
- AC_SUBST([LIMITS_H])
- AM_CONDITIONAL([GL_GENERATE_LIMITS_H], [test -n "$LIMITS_H"])
+])
+
+dnl Unconditionally enables the replacement of <limits.h>.
+AC_DEFUN([gl_REPLACE_LIMITS_H],
+[
+ AC_REQUIRE([gl_LIMITS_H])
+ GL_GENERATE_LIMITS_H=true
])