mirror of
https://github.com/varun-r-mallya/sysprof.git
synced 2025-12-31 20:36:25 +00:00
29c4ec495f
This is a major redesign a modernization of Sysprof. The core data structures and design are largely the same, but it has been ported to Gtk3 and has lots of additions that should make your profiling experience smoother. Especially for those that are new to profiling. There are some very simple help docs added, but we really need the experts to come in and write some documentation here.
80 lines
3.0 KiB
Plaintext
80 lines
3.0 KiB
Plaintext
# size_max.m4 serial 10
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dnl Copyright (C) 2003, 2005-2006, 2008-2015 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl From Bruno Haible.
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AC_DEFUN([gl_SIZE_MAX],
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[
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AC_CHECK_HEADERS([stdint.h])
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dnl First test whether the system already has SIZE_MAX.
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AC_CACHE_CHECK([for SIZE_MAX], [gl_cv_size_max], [
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gl_cv_size_max=
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AC_EGREP_CPP([Found it], [
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#include <limits.h>
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#if HAVE_STDINT_H
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#include <stdint.h>
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#endif
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#ifdef SIZE_MAX
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Found it
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#endif
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], [gl_cv_size_max=yes])
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if test -z "$gl_cv_size_max"; then
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dnl Define it ourselves. Here we assume that the type 'size_t' is not wider
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dnl than the type 'unsigned long'. Try hard to find a definition that can
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dnl be used in a preprocessor #if, i.e. doesn't contain a cast.
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AC_COMPUTE_INT([size_t_bits_minus_1], [sizeof (size_t) * CHAR_BIT - 1],
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[#include <stddef.h>
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#include <limits.h>], [size_t_bits_minus_1=])
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AC_COMPUTE_INT([fits_in_uint], [sizeof (size_t) <= sizeof (unsigned int)],
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[#include <stddef.h>], [fits_in_uint=])
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if test -n "$size_t_bits_minus_1" && test -n "$fits_in_uint"; then
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if test $fits_in_uint = 1; then
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dnl Even though SIZE_MAX fits in an unsigned int, it must be of type
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dnl 'unsigned long' if the type 'size_t' is the same as 'unsigned long'.
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AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <stddef.h>
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extern size_t foo;
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extern unsigned long foo;
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]],
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[[]])],
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[fits_in_uint=0])
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fi
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dnl We cannot use 'expr' to simplify this expression, because 'expr'
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dnl works only with 'long' integers in the host environment, while we
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dnl might be cross-compiling from a 32-bit platform to a 64-bit platform.
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if test $fits_in_uint = 1; then
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gl_cv_size_max="(((1U << $size_t_bits_minus_1) - 1) * 2 + 1)"
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else
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gl_cv_size_max="(((1UL << $size_t_bits_minus_1) - 1) * 2 + 1)"
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fi
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else
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dnl Shouldn't happen, but who knows...
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gl_cv_size_max='((size_t)~(size_t)0)'
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fi
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fi
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])
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if test "$gl_cv_size_max" != yes; then
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AC_DEFINE_UNQUOTED([SIZE_MAX], [$gl_cv_size_max],
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[Define as the maximum value of type 'size_t', if the system doesn't define it.])
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fi
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dnl Don't redefine SIZE_MAX in config.h if config.h is re-included after
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dnl <stdint.h>. Remember that the #undef in AH_VERBATIM gets replaced with
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dnl #define by AC_DEFINE_UNQUOTED.
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AH_VERBATIM([SIZE_MAX],
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[/* Define as the maximum value of type 'size_t', if the system doesn't define
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it. */
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#ifndef SIZE_MAX
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# undef SIZE_MAX
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#endif])
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])
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dnl Autoconf >= 2.61 has AC_COMPUTE_INT built-in.
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dnl Remove this when we can assume autoconf >= 2.61.
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m4_ifdef([AC_COMPUTE_INT], [], [
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AC_DEFUN([AC_COMPUTE_INT], [_AC_COMPUTE_INT([$2],[$1],[$3],[$4])])
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])
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