1
dnl Helper Functions for the RRDtool configure.ac script
3
dnl this file gets included into aclocal.m4 when runnning aclocal
7
dnl Check for the presence of a particular library and its header files
8
dnl if this check fails set the environment variable EX_CHECK_ALL_ERR to YES
9
dnl and prints out a helful message
12
dnl EX_CHECK_ALL(library, function, header, pkgconf name, tested-version, homepage, cppflags)
13
dnl $1 $2 $3 $4 $5 $6 $7
16
AC_DEFUN([EX_CHECK_ALL],
20
ex_check_save_LIBS=${LIBS}
21
ex_check_save_CPPFLAGS=${CPPFLAGS}
22
ex_check_save_LDFLAGS=${LDFLAGS}
23
if test "x$7" != "x"; then
24
CPPFLAGS="$CPPFLAGS -I$7"
26
dnl try compiling naked first
28
AC_CHECK_HEADER($3,[LIBS="-l$1 ${LIBS}";EX_CHECK_STATE=YES],[])],[])
29
if test $EX_CHECK_STATE = NO; then
30
dnl now asking pkg-config for help
31
AC_CHECK_PROGS(PKGCONFIG,[pkg-config],no)
32
if test "$PKGCONFIG" != "no"; then
33
if $PKGCONFIG --exists $4; then
34
CPPFLAGS=${CPPFLAGS}" "`$PKGCONFIG --cflags $4`
35
LDFLAGS=${LDFLAGS}" "`$PKGCONFIG --libs-only-L $4`
36
LDFLAGS=${LDFLAGS}" "`$PKGCONFIG --libs-only-other $4`
37
LIBS=${LIBS}" "`$PKGCONFIG --libs-only-l $4`
38
dnl remove the cached value and test again
39
unset ac_cv_lib_`echo $1 | sed ['s/[^_a-zA-Z0-9]/_/g;s/^[0-9]/_/']`_$2
41
unset ac_cv_header_`echo $3 | sed ['s/[^_a-zA-Z0-9]/_/g;s/^[0-9]/_/']`
42
AC_CHECK_HEADER($3,[EX_CHECK_STATE=YES],[])
46
----------------------------------------------------------------------------
47
* I found a copy of pkgconfig, but there is no $4.pc file around.
48
You may want to set the PKG_CONFIG_PATH variable to point to its
50
----------------------------------------------------------------------------
56
if test ${EX_CHECK_STATE} = NO; then
58
----------------------------------------------------------------------------
59
* I could not find a working copy of $4. Check config.log for hints on why
60
this is the case. Maybe you need to set LDFLAGS and CPPFLAGS appropriately
61
so that compiler and the linker can find lib$1 and its header files. If
62
you have not installed $4, you can get it either from its original home on
66
You can find also find an archive copy on
68
http://oss.oetiker.ch/rrdtool/pub/libs
70
The last tested version of $4 is $5.
76
----------------------------------------------------------------------------
79
LIBS="${ex_check_save_LIBS}"
80
CPPFLAGS="${ex_check_save_CPPFLAGS}"
81
LDFLAGS="${ex_check_save_LDFLAGS}"
88
dnl Ptherad check from http://autoconf-archive.cryp.to/acx_pthread.m4
90
dnl @synopsis ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
92
dnl This macro figures out how to build C programs using POSIX threads.
93
dnl It sets the PTHREAD_LIBS output variable to the threads library and
94
dnl linker flags, and the PTHREAD_CFLAGS output variable to any special
95
dnl C compiler flags that are needed. (The user can also force certain
96
dnl compiler flags/libs to be tested by setting these environment
99
dnl Also sets PTHREAD_CC to any special C compiler that is needed for
100
dnl multi-threaded programs (defaults to the value of CC otherwise).
101
dnl (This is necessary on AIX to use the special cc_r compiler alias.)
103
dnl NOTE: You are assumed to not only compile your program with these
104
dnl flags, but also link it with them as well. e.g. you should link
105
dnl with $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS
108
dnl If you are only building threads programs, you may wish to use
109
dnl these variables in your default LIBS, CFLAGS, and CC:
111
dnl LIBS="$PTHREAD_LIBS $LIBS"
112
dnl CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
115
dnl In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute
116
dnl constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to
117
dnl that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
119
dnl ACTION-IF-FOUND is a list of shell commands to run if a threads
120
dnl library is found, and ACTION-IF-NOT-FOUND is a list of commands to
121
dnl run it if it is not found. If ACTION-IF-FOUND is not specified, the
122
dnl default action will define HAVE_PTHREAD.
124
dnl Please let the authors know if this macro fails on any platform, or
125
dnl if you have any other suggestions or comments. This macro was based
126
dnl on work by SGJ on autoconf scripts for FFTW (www.fftw.org) (with
127
dnl help from M. Frigo), as well as ac_pthread and hb_pthread macros
128
dnl posted by Alejandro Forero Cuervo to the autoconf macro repository.
129
dnl We are also grateful for the helpful feedback of numerous users.
131
dnl @category InstalledPackages
132
dnl @author Steven G. Johnson <stevenj@alum.mit.edu>
133
dnl @version 2005-01-14
134
dnl @license GPLWithACException
136
AC_DEFUN([ACX_PTHREAD], [
137
AC_REQUIRE([AC_CANONICAL_HOST])
141
# We used to check for pthread.h first, but this fails if pthread.h
142
# requires special compiler flags (e.g. on True64 or Sequent).
143
# It gets checked for in the link test anyway.
145
# First of all, check if the user has set any of the PTHREAD_LIBS,
146
# etcetera environment variables, and if threads linking works using
148
if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
149
save_CFLAGS="$CFLAGS"
150
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
152
LIBS="$PTHREAD_LIBS $LIBS"
153
AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
154
AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
155
AC_MSG_RESULT($acx_pthread_ok)
156
if test x"$acx_pthread_ok" = xno; then
161
CFLAGS="$save_CFLAGS"
164
# We must check for the threads library under a number of different
165
# names; the ordering is very important because some systems
166
# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
167
# libraries is broken (non-POSIX).
169
# Create a list of thread flags to try. Items starting with a "-" are
170
# C compiler flags, and other items are library names, except for "none"
171
# which indicates that we try without any flags at all, and "pthread-config"
172
# which is a program returning the flags for the Pth emulation library.
174
acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
176
# The ordering *is* (sometimes) important. Some notes on the
177
# individual items follow:
179
# pthreads: AIX (must check this before -lpthread)
180
# none: in case threads are in libc; should be tried before -Kthread and
181
# other compiler flags to prevent continual compiler warnings
182
# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
183
# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
184
# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
185
# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
186
# -pthreads: Solaris/gcc
187
# -mthreads: Mingw32/gcc, Lynx/gcc
188
# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
189
# doesn't hurt to check since this sometimes defines pthreads too;
190
# also defines -D_REENTRANT)
191
# pthread: Linux, etcetera
192
# --thread-safe: KAI C++
193
# pthread-config: use pthread-config program (for GNU Pth library)
195
case "${host_cpu}-${host_os}" in
198
# On Solaris (at least, for some versions), libc contains stubbed
199
# (non-functional) versions of the pthreads routines, so link-based
200
# tests will erroneously succeed. (We need to link with -pthread or
201
# -lpthread.) (The stubs are missing pthread_cleanup_push, or rather
202
# a function called by this macro, so we could check for that, but
203
# who knows whether they'll stub that too in a future libc.) So,
204
# we'll just look for -pthreads and -lpthread first:
206
acx_pthread_flags="-pthread -pthreads pthread -mt $acx_pthread_flags"
210
if test x"$acx_pthread_ok" = xno; then
211
for flag in $acx_pthread_flags; do
215
AC_MSG_CHECKING([whether pthreads work without any flags])
219
AC_MSG_CHECKING([whether pthreads work with $flag])
220
PTHREAD_CFLAGS="$flag"
224
AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no)
225
if test x"$acx_pthread_config" = xno; then continue; fi
226
PTHREAD_CFLAGS="`pthread-config --cflags`"
227
PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
231
AC_MSG_CHECKING([for the pthreads library -l$flag])
232
PTHREAD_LIBS="-l$flag"
237
save_CFLAGS="$CFLAGS"
238
LIBS="$PTHREAD_LIBS $LIBS"
239
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
241
# Check for various functions. We must include pthread.h,
242
# since some functions may be macros. (On the Sequent, we
243
# need a special flag -Kthread to make this header compile.)
244
# We check for pthread_join because it is in -lpthread on IRIX
245
# while pthread_create is in libc. We check for pthread_attr_init
246
# due to DEC craziness with -lpthreads. We check for
247
# pthread_cleanup_push because it is one of the few pthread
248
# functions on Solaris that doesn't have a non-functional libc stub.
249
# We try pthread_create on general principles.
250
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]], [[pthread_t th; pthread_join(th, 0);
251
pthread_attr_init(0); pthread_cleanup_push(0, 0);
252
pthread_create(0,0,0,0); pthread_cleanup_pop(0); ]])],[acx_pthread_ok=yes],[])
255
CFLAGS="$save_CFLAGS"
257
AC_MSG_RESULT($acx_pthread_ok)
258
if test "x$acx_pthread_ok" = xyes; then
267
# Various other checks:
268
if test "x$acx_pthread_ok" = xyes; then
270
LIBS="$PTHREAD_LIBS $LIBS"
271
save_CFLAGS="$CFLAGS"
272
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
274
# Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
275
AC_MSG_CHECKING([for joinable pthread attribute])
277
for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
278
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]], [[int attr=$attr;]])],[attr_name=$attr; break],[])
280
AC_MSG_RESULT($attr_name)
281
if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
282
AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
283
[Define to necessary symbol if this constant
284
uses a non-standard name on your system.])
287
AC_MSG_CHECKING([if more special flags are required for pthreads])
289
case "${host_cpu}-${host_os}" in
290
*-aix* | *-freebsd* | *-darwin*) x_rflag="-D_THREAD_SAFE";;
291
*solaris* | *-osf* | *-hpux*) x_rflag="-D_REENTRANT";;
292
*-linux* | *-k*bsd*-gnu*)
293
if test x"$PTHREAD_CFLAGS" = "x-pthread"; then
294
# For Linux/gcc "-pthread" implies "-lpthread". We need, however, to make this explicit
295
# in PTHREAD_LIBS such that a shared library to be built properly depends on libpthread.
296
PTHREAD_LIBS="-lpthread $PTHREAD_LIBS"
299
AC_MSG_RESULT(${x_rflag})
300
if test "x$x_rflag" != xno; then
301
PTHREAD_CFLAGS="$x_rflag $PTHREAD_CFLAGS"
305
CFLAGS="$save_CFLAGS"
307
# More AIX lossage: must compile with cc_r
308
AC_CHECK_PROG(PTHREAD_CC, cc_r, cc_r, ${CC})
313
AC_SUBST(PTHREAD_LIBS)
314
AC_SUBST(PTHREAD_CFLAGS)
317
# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
318
if test x"$acx_pthread_ok" = xyes; then
319
ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
330
dnl determine how to get IEEE math working
331
dnl AC_IEEE(MESSAGE, set rd_cv_ieee_[var] variable, INCLUDES,
332
dnl FUNCTION-BODY, [ACTION-IF-FOUND [,ACTION-IF-NOT-FOUND]])
335
dnl substitute them in all the files listed in AC_OUTPUT
338
AC_DEFUN([AC_IEEE], [
339
AC_MSG_CHECKING([if IEEE math works $1])
340
AC_CACHE_VAL([rd_cv_ieee_$2],
341
[AC_RUN_IFELSE([AC_LANG_SOURCE([[$3
356
# include <fp_class.h>
360
#if (! defined(HAVE_ISINF) && defined(HAVE_FPCLASS))
361
# define HAVE_ISINF 1
362
# define isinf(a) (fpclass(a) == FP_NINF || fpclass(a) == FP_PINF)
365
/* solaris 10 it defines isnan such that only forte can compile it ... bad bad */
366
#if (defined(HAVE_ISNAN) && defined(isnan) && defined(HAVE_FPCLASS) && defined(FP_SNAN) && defined(FP_QNAN))
368
# define isnan(a) (fpclass(a) == FP_SNAN || fpclass(a) == FP_QNAN)
372
#if (! defined(HAVE_ISINF) && defined(HAVE_FP_CLASS) && defined(HAVE_FP_CLASS_H) && defined(FP_NEG_INF) && defined( FP_POS_INF) )
373
# define HAVE_ISINF 1
374
# define isinf(a) (fp_class(a) == FP_NEG_INF || fp_class(a) == FP_POS_INF)
378
#if (! defined(HAVE_ISINF) && defined(HAVE_CLASS))
379
# define HAVE_ISINF 1
380
# define isinf(a) (class(a) == FP_MINUS_INF || class(a) == FP_PLUS_INF)
383
#if (! defined(HAVE_ISINF) && defined(HAVE_FPCLASSIFY) && defined(FP_PLUS_INF) && defined(FP_MINUS_INF))
384
# define HAVE_ISINF 1
385
# define isinf(a) (fpclassify(a) == FP_MINUS_INF || fpclassify(a) == FP_PLUS_INF)
388
#if (! defined(HAVE_ISINF) && defined(HAVE_FPCLASSIFY) && defined(FP_INFINITE))
389
# define HAVE_ISINF 1
390
# define isinf(a) (fpclassify(a) == FP_INFINITE)
399
double rrdnan,rrdinf,rrdc,rrdzero;
401
/* some math to see if we get a floating point exception */
402
rrdzero=sin(0.0); /* don't let the compiler optimize us away */
403
rrdnan=0.0/rrdzero; /* especially here */
404
rrdinf=1.0/rrdzero; /* and here. I want to know if it can do the magic */
405
/* at run time without sig fpe */
406
rrdc = rrdinf + rrdnan;
407
rrdc = rrdinf / rrdnan;
408
if (! isnan(rrdnan)) {printf ("not isnan(NaN) ... "); return 1;}
409
if (rrdnan == rrdnan) {printf ("nan == nan ... "); return 1;}
410
if (! isinf(rrdinf)) {printf ("not isinf(oo) ... "); return 1;}
411
if (! isinf(-rrdinf)) {printf ("not isinf(-oo) ... "); return 1;}
412
if (! rrdinf > 0) {printf ("not inf > 0 ... "); return 1;}
413
if (! -rrdinf < 0) {printf ("not -inf < 0 ... "); return 1;}
415
}]])],[rd_cv_ieee_$2=yes],[rd_cv_ieee_$2=no],[:])])
416
dnl these we run regardles is cached or not
417
if test x${rd_cv_ieee_$2} = "xyes"; then
427
AC_DEFUN([AC_FULL_IEEE],[
430
AC_IEEE([out of the box], works, , , ,
431
[CFLAGS="$_cflags -ieee"
432
AC_IEEE([with the -ieee switch], switch, , , ,
433
[CFLAGS="$_cflags -qfloat=nofold"
434
AC_IEEE([with the -qfloat=nofold switch], nofold, , , ,
435
[CFLAGS="$_cflags -w -qflttrap=enable:zerodivide"
436
AC_IEEE([with the -w -qflttrap=enable:zerodivide], flttrap, , , ,
437
[CFLAGS="$_cflags -mieee"
438
AC_IEEE([with the -mieee switch], mswitch, , , ,
439
[CFLAGS="$_cflags -q float=rndsngl"
440
AC_IEEE([with the -q float=rndsngl switch], qswitch, , , ,
441
[CFLAGS="$_cflags -OPT:IEEE_NaN_inf=ON"
442
AC_IEEE([with the -OPT:IEEE_NaN_inf=ON switch], ieeenaninfswitch, , , ,
443
[CFLAGS="$_cflags -OPT:IEEE_comparisons=ON"
444
AC_IEEE([with the -OPT:IEEE_comparisons=ON switch], ieeecmpswitch, , , ,
446
AC_IEEE([with fpsetmask(0)], mask,
447
[#include <floatingpoint.h>], [fpsetmask(0)],
448
[AC_DEFINE(MUST_DISABLE_FPMASK)
449
PERLFLAGS="CCFLAGS=-DMUST_DISABLE_FPMASK"],
450
[AC_IEEE([with signal(SIGFPE,SIG_IGN)], sigfpe,
451
[#include <signal.h>], [signal(SIGFPE,SIG_IGN)],
452
[AC_DEFINE(MUST_DISABLE_SIGFPE)
453
PERLFLAGS="CCFLAGS=-DMUST_DISABLE_SIGFPE"],
455
Your Compiler does not do propper IEEE math ... Please find out how to
456
make IEEE math work with your compiler and let me know (tobi@oetiker.ch).
457
Check config.log to see what went wrong ...
458
]))])])])])])])])])])
465
dnl a macro to check for ability to create python extensions
466
dnl AM_CHECK_PYTHON_HEADERS([ACTION-IF-POSSIBLE], [ACTION-IF-NOT-POSSIBLE])
467
dnl function also defines PYTHON_INCLUDES
468
AC_DEFUN([AM_CHECK_PYTHON_HEADERS],
469
[AC_REQUIRE([AM_PATH_PYTHON])
470
AC_MSG_CHECKING(for headers required to compile python extensions)
471
dnl deduce PYTHON_INCLUDES
472
py_prefix=`$PYTHON -c "import sys; print sys.prefix"`
473
py_exec_prefix=`$PYTHON -c "import sys; print sys.exec_prefix"`
474
PYTHON_INCLUDES="-I${py_prefix}/include/python${PYTHON_VERSION}"
475
if test "$py_prefix" != "$py_exec_prefix"; then
476
PYTHON_INCLUDES="$PYTHON_INCLUDES -I${py_exec_prefix}/include/python${PYTHON_VERSION}"
478
AC_SUBST(PYTHON_INCLUDES)
479
dnl check if the headers exist:
480
save_CPPFLAGS="$CPPFLAGS"
481
CPPFLAGS="$CPPFLAGS $PYTHON_INCLUDES"
482
AC_TRY_CPP([#include <Python.h>],dnl
483
[AC_MSG_RESULT(found)
485
[AC_MSG_RESULT(not found)
487
CPPFLAGS="$save_CPPFLAGS"
490
dnl a macro to add some color to the build process.
491
dnl CONFIGURE_PART(MESSAGE)
493
AC_DEFUN([CONFIGURE_PART],[
495
# for the most important terminal types we directly know the sequences
496
xterm|xterm*|vt220|vt220*)
497
T_MD=`awk 'BEGIN { printf("%c%c%c%c", 27, 91, 49, 109); }' </dev/null 2>/dev/null`
498
T_ME=`awk 'BEGIN { printf("%c%c%c", 27, 91, 109); }' </dev/null 2>/dev/null`
501
T_MD=`awk 'BEGIN { printf("%c%c%c%c%c%c", 27, 91, 49, 109, 0, 0); }' </dev/null 2>/dev/null`
502
T_ME=`awk 'BEGIN { printf("%c%c%c%c%c", 27, 91, 109, 0, 0); }' </dev/null 2>/dev/null`
510
AC_MSG_RESULT([${T_MD}$1${T_ME}])
515
AC_DEFUN([CHECK_FOR_WORKING_MS_ASYNC], [
516
AC_MSG_CHECKING([if msync with MS_ASYNC updates the files mtime])
517
AC_CACHE_VAL([rd_cv_ms_async],
518
[AC_RUN_IFELSE([AC_LANG_SOURCE([[
520
#include <sys/types.h>
521
#include <sys/stat.h>
524
#include <sys/mman.h>
528
void timeout (int i) { exit (1); }
534
char temp[] = "mmaptestXXXXXX";
535
struct utimbuf newtime;
542
write(fd,"12345\n", 6);
544
create_ts = stbuf.st_mtime;
547
utime(temp,&newtime);
548
addr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
549
if (addr == MAP_FAILED) {
554
res = msync(addr, 4, MS_ASYNC);
564
/* there were reports of sync hanging
565
so we better set an alarm */
566
signal(SIGALRM,&timeout);
568
/* The ASYNC means that we schedule the msync and return immediately.
569
Since we want to see if the modification time is updated upon
570
msync(), we have to make sure that our asynchronous request
571
completes before we stat below. In a real application, the
572
request would be completed at a random time in the future
573
but for this test we do not want to wait an arbitrary amount of
574
time, so force a commit now. */
577
if (create_ts > stbuf.st_mtime){
586
]])],[rd_cv_ms_async=ok],[rd_cv_ms_async=broken],[:])])
589
if test "${rd_cv_ms_async}" = "ok"; then
592
AC_DEFINE_UNQUOTED(HAVE_BROKEN_MS_ASYNC, 1 , [set to 1 if msync with MS_ASYNC fails to update mtime])
594
AC_MSG_WARN([With mmap access, your platform fails to update the files])
595
AC_MSG_WARN([mtime. RRDtool will work around this problem by calling utime on each])
596
AC_MSG_WARN([file it opens for rw access.])
added
removed
m4/acinclude.m4
