1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
dnl #
dnl # check if were compiling with CLANG, autoconf GCC macro identifies CLANG as GCC
dnl #
AC_DEFUN([AX_CC_IS_CLANG],[
AC_CACHE_CHECK([if compiler is clang], [ax_cv_cc_clang],[
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [[
#ifndef __clang__
not clang
#endif
]])],
[ax_cv_cc_clang=yes],
[ax_cv_cc_clang=no])
])
])
AC_DEFUN([AX_CC_QUNUSED_ARGUMENTS_FLAG],[
AC_CACHE_CHECK([for the compiler flag "-Qunused-arguments"], [ax_cv_cc_qunused_arguments_flag],[
CFLAGS_SAVED=$CFLAGS
CFLAGS="$CFLAGS -Werror -Qunused-arguments -foobar"
AC_LANG_PUSH(C)
AC_TRY_COMPILE(
[],
[return 0;],
[ax_cv_cc_qunused_arguments_flag="yes"],
[ax_cv_cc_qunused_arguments_flag="no"])
AC_LANG_POP
CFLAGS="$CFLAGS_SAVED"
])
])
AC_DEFUN([AX_CC_NO_UNKNOWN_WARNING_OPTION_FLAG],[
AC_CACHE_CHECK([for the compiler flag "-Wno-unknown-warning-option"], [ax_cv_cc_no_unknown_warning_option_flag],[
CFLAGS_SAVED=$CFLAGS
CFLAGS="-Werror -Wno-unknown-warning-option"
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [[
/*
* gcc will happily accept -Wno-unknown-warning-option
* only emitting an error about it, if an error ocurrs in the source file.
*/
#if defined(__GNUC__) && !defined(__clang__)
gcc sucks
#endif
return 0;
]])],
[ax_cv_cc_no_unknown_warning_option_flag=yes],
[ax_cv_cc_no_unknown_warning_option_flag=no])
CFLAGS="$CFLAGS_SAVED"
])
])
AC_DEFUN([AX_CC_WEVERYTHING_FLAG],[
AC_CACHE_CHECK([for the compiler flag "-Weverything"], [ax_cv_cc_weverything_flag],[
CFLAGS_SAVED=$CFLAGS
CFLAGS="$CFLAGS -Werror -Weverything -Wno-unused-macros -Wno-unreachable-code-return"
AC_LANG_PUSH(C)
AC_TRY_COMPILE(
[],
[return 0;],
[ax_cv_cc_weverything_flag="yes"],
[ax_cv_cc_weverything_flag="no"])
AC_LANG_POP
CFLAGS="$CFLAGS_SAVED"
])
])
AC_DEFUN([AX_CC_WDOCUMENTATION_FLAG],[
AC_CACHE_CHECK([for the compiler flag "-Wdocumentation"], [ax_cv_cc_wdocumentation_flag],[
CFLAGS_SAVED=$CFLAGS
CFLAGS="$CFLAGS -Werror -Wdocumentation"
AC_LANG_PUSH(C)
AC_TRY_COMPILE(
[],
[return 0;],
[ax_cv_cc_wdocumentation_flag="yes"],
[ax_cv_cc_wdocumentation_flag="no"])
AC_LANG_POP
CFLAGS="$CFLAGS_SAVED"
])
])
AC_DEFUN([AX_CC_NO_DATE_TIME_FLAG],[
AC_CACHE_CHECK([for the compiler flag "-Wno-date-time"], [ax_cv_cc_no_date_time_flag],[
CFLAGS_SAVED=$CFLAGS
CFLAGS="$CFLAGS -Werror -Wno-date-time"
AC_LANG_PUSH(C)
AC_TRY_COMPILE(
[],
[return 0;],
[ax_cv_cc_no_date_time_flag="yes"],
[ax_cv_cc_no_date_time_flag="no"])
AC_LANG_POP
CFLAGS="$CFLAGS_SAVED"
])
])
AC_DEFUN([AX_CC_PTHREAD_FLAG],[
AC_CACHE_CHECK([for the compiler flag "-pthread"], [ax_cv_cc_pthread_flag],[
CFLAGS_SAVED=$CFLAGS
CFLAGS="$CFLAGS -Werror -pthread"
AC_LANG_PUSH(C)
AC_TRY_COMPILE(
[],
[return 0;],
[ax_cv_cc_pthread_flag="yes"],
[ax_cv_cc_pthread_flag="no"])
AC_LANG_POP
CFLAGS="$CFLAGS_SAVED"
])
])
dnl #
dnl # Determine the number of system cores we have
dnl #
AC_DEFUN([AX_SYSTEM_CORES],[
AC_CACHE_CHECK([number of system cores], [ax_cv_system_cores],
[
AC_LANG_PUSH(C)
AC_TRY_RUN(
[
#include <stdio.h>
#include <stdint.h>
#ifdef _WIN32
# include <windows.h>
#elif MACOS
# include <sys/param.h>
# include <sys/sysctl.h>
#else
# include <unistd.h>
#endif
int main (int argc, char *argv[])
{
uint32_t count;
#ifdef WIN32
SYSTEM_INFO sysinfo;
GetSystemInfo(&sysinfo);
count = sysinfo.dwNumberOfProcessors;
#elif MACOS
int nm[2];
size_t len = 4;
nm[0] = CTL_HW;
nm[1] = HW_AVAILCPU;
sysctl(nm, 2, &count, &len, NULL, 0);
if(count < 1) {
nm[1] = HW_NCPU;
sysctl(nm, 2, &count, &len, NULL, 0);
if(count < 1) {
count = 1;
}
}
#else
count = sysconf(_SC_NPROCESSORS_ONLN);
#endif
return count;
}
],
[ax_cv_system_cores=$?],
[ax_cv_system_cores=$?],
[ax_cv_system_cores=]
)
AC_LANG_POP
])
])
|
