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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:54:16 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:54:16 +0000 |
| commit | 485f6ecd453d8a2fd8b9b9fadea03159d8b50797 (patch) | |
| tree | 32451fa3cdd9321fb2591fada9891b2cb70a9cd1 /m4/limits-h.m4 | |
| parent | Initial commit. (diff) | |
| download | grub2-485f6ecd453d8a2fd8b9b9fadea03159d8b50797.tar.xz grub2-485f6ecd453d8a2fd8b9b9fadea03159d8b50797.zip | |
Adding upstream version 2.06.upstream/2.06upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'm4/limits-h.m4')
| -rw-r--r-- | m4/limits-h.m4 | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/m4/limits-h.m4 b/m4/limits-h.m4 new file mode 100644 index 0000000..68f724c --- /dev/null +++ b/m4/limits-h.m4 @@ -0,0 +1,43 @@ +dnl Check whether limits.h has needed features. + +dnl Copyright 2016-2019 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 LLONG_MAX, WORD_BIT, ULLONG_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; + ]])], + [gl_cv_header_limits_width=yes], + [gl_cv_header_limits_width=no])]) + if test "$gl_cv_header_limits_width" = yes; then + LIMITS_H= + else + LIMITS_H=limits.h + fi + AC_SUBST([LIMITS_H]) + AM_CONDITIONAL([GL_GENERATE_LIMITS_H], [test -n "$LIMITS_H"]) +]) + +dnl Unconditionally enables the replacement of <limits.h>. +AC_DEFUN([gl_REPLACE_LIMITS_H], +[ + AC_REQUIRE([gl_LIMITS_H]) + LIMITS_H='limits.h' + AM_CONDITIONAL([GL_GENERATE_LIMITS_H], [test -n "$LIMITS_H"]) +]) |