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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:19:27 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:19:27 +0000 |
commit | e0023883c6d2e6745a19e4b48e186ed156c1fca8 (patch) | |
tree | 1a48b8056ec984385d0d862b683535d04d6ed215 /gl/m4/limits-h.m4 | |
parent | Initial commit. (diff) | |
download | man-db-upstream.tar.xz man-db-upstream.zip |
Adding upstream version 2.11.2.upstream/2.11.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gl/m4/limits-h.m4')
-rw-r--r-- | gl/m4/limits-h.m4 | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/gl/m4/limits-h.m4 b/gl/m4/limits-h.m4 new file mode 100644 index 0000000..5d5a5bf --- /dev/null +++ b/gl/m4/limits-h.m4 @@ -0,0 +1,41 @@ +dnl Check whether limits.h has needed features. + +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. + +dnl From Paul Eggert. + +AC_DEFUN_ONCE([gl_LIMITS_H], +[ + gl_CHECK_NEXT_HEADERS([limits.h]) + + 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> + 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 + GL_GENERATE_LIMITS_H=false + else + GL_GENERATE_LIMITS_H=true + fi +]) + +dnl Unconditionally enables the replacement of <limits.h>. +AC_DEFUN([gl_REPLACE_LIMITS_H], +[ + AC_REQUIRE([gl_LIMITS_H]) + GL_GENERATE_LIMITS_H=true +]) |