-# INCLUDED_LIB(LIBRARY, FUNCTION, OTHER-LIBRARIES = none)
-# ---------------------------------------------
-AC_DEFUN(INCLUDED_LIB,
+dnl Helper Functions for the RRDtool configure.ac script
+dnl
+dnl this file gets included into aclocal.m4 when runnning aclocal
+dnl
+dnl
+dnl
+dnl Check for the presence of a particular library and its header files
+dnl if this check fails set the environment variable EX_CHECK_ALL_ERR to YES
+dnl and prints out a helful message
+dnl
+dnl
+dnl EX_CHECK_ALL(library, function, header, pkgconf name, tested-version, homepage)
+dnl $1 $2 $3 $4 $5 $6
+dnl
+dnl
+AC_DEFUN([EX_CHECK_ALL],
[
-use_installed_lib$1=
-AC_ARG_WITH([lib$1],
- [AC_HELP_STRING([--with-lib$1],
- [Use installed lib$1 (under PREFIX)])],
- [if test -n "$withval"; then
- if test "$withval" = yes; then
- withval="default path"
- else
- CFLAGS="$CFLAGS -I${withval}/include"
- LDFLAGS="$LDFLAGS -L${withval}/lib"
- fi
- fi
- AC_CHECK_LIB([$1],[$2],
- [AC_MSG_NOTICE([using lib$1 in ${withval}])
- use_installed_lib$1=yes],
- [AC_MSG_ERROR([lib$1 not found in ${withval}])],
- [$3])],
- [AC_MSG_NOTICE([using included lib$1])])
-AM_CONDITIONAL([USE_INSTALLED_lib$1],
- [test "$use_installed_lib$1" = yes])
+ AC_LANG_PUSH(C)
+ EX_CHECK_STATE=NO
+ ex_check_save_LIBS=${LIBS}
+ ex_check_save_CPPFLAGS=${CPPFLAGS}
+ ex_check_save_LDFLAGS=${LDPFLAGS}
+ dnl try compiling naked first
+ AC_CHECK_LIB($1,$2, [
+ AC_CHECK_HEADER($3,[LIBS="-l$1 ${LIBS}";EX_CHECK_STATE=YES],[])],[])
+ if test $EX_CHECK_STATE = NO; then
+ dnl now asking pkg-config for help
+ AC_CHECK_PROGS(PKGCONFIG,[pkg-config],no)
+ if test "$PKGCONFIG" != "no"; then
+ if $PKGCONFIG --exists $4; then
+ CPPFLAGS=${CPPFLAGS}" "`$PKGCONFIG --cflags $4`
+ LDFLAGS=${LDFLAGS}" "`$PKGCONFIG --libs-only-L $4`
+ LDFLAGS=${LDFLAGS}" "`$PKGCONFIG --libs-only-other $4`
+ LIBS=${LIBS}" "`$PKGCONFIG --libs-only-l $4`
+ dnl remove the cached value and test again
+ unset ac_cv_lib_$1_$2
+ AC_CHECK_LIB($1,$2,[ AC_CHECK_HEADER($3,[EX_CHECK_STATE=YES],[])],[])
+ else
+ AC_MSG_WARN([
+----------------------------------------------------------------------------
+* I found a copy of pkgconfig, but there is no $4.pc file around.
+ You may want to set the PKG_CONFIG_PATH variable to point to its
+ location.
+----------------------------------------------------------------------------
+ ])
+ fi
+ fi
+ fi
+
+ if test ${EX_CHECK_STATE} = NO; then
+ AC_MSG_WARN([
+----------------------------------------------------------------------------
+* I could not find a working copy of $4. Check config.log for hints on why
+ this is the case. Maybe you need to set LDFLAGS and CPPFLAGS appropriately
+ so that compiler and the linker can find lib$1 and its header files. If
+ you have not installed $4, you can get it either from its original home on
+
+ $6
+
+ You can find also find an archive copy on
+
+ http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/pub/libs
+
+ The last tested version of $4 is $5.
+
+ LIBS=$LIBS
+ LDFLAGS=$LDFLAGS
+ CPPFLAGS=$CPPFLAGS
+
+----------------------------------------------------------------------------
+ ])
+ EX_CHECK_ALL_ERR=YES
+ LIBS="${ex_check_save_LIBS}"
+ CPPFLAGS="${ex_check_save_CPPFLAGS}"
+ LDFLAGS="${ex_check_save_LDFLAGS}"
+ fi
+ AC_LANG_POP(C)
+]
+)
+dnl
+dnl Ptherad check from http://autoconf-archive.cryp.to/acx_pthread.m4
+dnl
+dnl @synopsis ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
+dnl
+dnl This macro figures out how to build C programs using POSIX threads.
+dnl It sets the PTHREAD_LIBS output variable to the threads library and
+dnl linker flags, and the PTHREAD_CFLAGS output variable to any special
+dnl C compiler flags that are needed. (The user can also force certain
+dnl compiler flags/libs to be tested by setting these environment
+dnl variables.)
+dnl
+dnl Also sets PTHREAD_CC to any special C compiler that is needed for
+dnl multi-threaded programs (defaults to the value of CC otherwise).
+dnl (This is necessary on AIX to use the special cc_r compiler alias.)
+dnl
+dnl NOTE: You are assumed to not only compile your program with these
+dnl flags, but also link it with them as well. e.g. you should link
+dnl with $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS
+dnl $LIBS
+dnl
+dnl If you are only building threads programs, you may wish to use
+dnl these variables in your default LIBS, CFLAGS, and CC:
+dnl
+dnl LIBS="$PTHREAD_LIBS $LIBS"
+dnl CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+dnl CC="$PTHREAD_CC"
+dnl
+dnl In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute
+dnl constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to
+dnl that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
+dnl
+dnl ACTION-IF-FOUND is a list of shell commands to run if a threads
+dnl library is found, and ACTION-IF-NOT-FOUND is a list of commands to
+dnl run it if it is not found. If ACTION-IF-FOUND is not specified, the
+dnl default action will define HAVE_PTHREAD.
+dnl
+dnl Please let the authors know if this macro fails on any platform, or
+dnl if you have any other suggestions or comments. This macro was based
+dnl on work by SGJ on autoconf scripts for FFTW (www.fftw.org) (with
+dnl help from M. Frigo), as well as ac_pthread and hb_pthread macros
+dnl posted by Alejandro Forero Cuervo to the autoconf macro repository.
+dnl We are also grateful for the helpful feedback of numerous users.
+dnl
+dnl @category InstalledPackages
+dnl @author Steven G. Johnson <stevenj@alum.mit.edu>
+dnl @version 2005-01-14
+dnl @license GPLWithACException
+
+AC_DEFUN([ACX_PTHREAD], [
+AC_REQUIRE([AC_CANONICAL_HOST])
+AC_LANG_PUSH(C)
+acx_pthread_ok=no
+
+# We used to check for pthread.h first, but this fails if pthread.h
+# requires special compiler flags (e.g. on True64 or Sequent).
+# It gets checked for in the link test anyway.
+
+# First of all, check if the user has set any of the PTHREAD_LIBS,
+# etcetera environment variables, and if threads linking works using
+# them:
+if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
+ save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+ save_LIBS="$LIBS"
+ LIBS="$PTHREAD_LIBS $LIBS"
+ AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
+ AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes)
+ AC_MSG_RESULT($acx_pthread_ok)
+ if test x"$acx_pthread_ok" = xno; then
+ PTHREAD_LIBS=""
+ PTHREAD_CFLAGS=""
+ fi
+ LIBS="$save_LIBS"
+ CFLAGS="$save_CFLAGS"
+fi
+
+# We must check for the threads library under a number of different
+# names; the ordering is very important because some systems
+# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
+# libraries is broken (non-POSIX).
+
+# Create a list of thread flags to try. Items starting with a "-" are
+# C compiler flags, and other items are library names, except for "none"
+# which indicates that we try without any flags at all, and "pthread-config"
+# which is a program returning the flags for the Pth emulation library.
+
+acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
+
+# The ordering *is* (sometimes) important. Some notes on the
+# individual items follow:
+
+# pthreads: AIX (must check this before -lpthread)
+# none: in case threads are in libc; should be tried before -Kthread and
+# other compiler flags to prevent continual compiler warnings
+# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
+# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
+# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
+# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
+# -pthreads: Solaris/gcc
+# -mthreads: Mingw32/gcc, Lynx/gcc
+# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
+# doesn't hurt to check since this sometimes defines pthreads too;
+# also defines -D_REENTRANT)
+# pthread: Linux, etcetera
+# --thread-safe: KAI C++
+# pthread-config: use pthread-config program (for GNU Pth library)
+
+case "${host_cpu}-${host_os}" in
+ *solaris*)
+
+ # On Solaris (at least, for some versions), libc contains stubbed
+ # (non-functional) versions of the pthreads routines, so link-based
+ # tests will erroneously succeed. (We need to link with -pthread or
+ # -lpthread.) (The stubs are missing pthread_cleanup_push, or rather
+ # a function called by this macro, so we could check for that, but
+ # who knows whether they'll stub that too in a future libc.) So,
+ # we'll just look for -pthreads and -lpthread first:
+
+ acx_pthread_flags="-pthread -pthreads pthread -mt $acx_pthread_flags"
+ ;;
+esac
+
+if test x"$acx_pthread_ok" = xno; then
+for flag in $acx_pthread_flags; do
+
+ case $flag in
+ none)
+ AC_MSG_CHECKING([whether pthreads work without any flags])
+ ;;
+
+ -*)
+ AC_MSG_CHECKING([whether pthreads work with $flag])
+ PTHREAD_CFLAGS="$flag"
+ ;;
+
+ pthread-config)
+ AC_CHECK_PROG(acx_pthread_config, pthread-config, yes, no)
+ if test x"$acx_pthread_config" = xno; then continue; fi
+ PTHREAD_CFLAGS="`pthread-config --cflags`"
+ PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
+ ;;
+
+ *)
+ AC_MSG_CHECKING([for the pthreads library -l$flag])
+ PTHREAD_LIBS="-l$flag"
+ ;;
+ esac
+
+ save_LIBS="$LIBS"
+ save_CFLAGS="$CFLAGS"
+ LIBS="$PTHREAD_LIBS $LIBS"
+ CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+
+ # Check for various functions. We must include pthread.h,
+ # since some functions may be macros. (On the Sequent, we
+ # need a special flag -Kthread to make this header compile.)
+ # We check for pthread_join because it is in -lpthread on IRIX
+ # while pthread_create is in libc. We check for pthread_attr_init
+ # due to DEC craziness with -lpthreads. We check for
+ # pthread_cleanup_push because it is one of the few pthread
+ # functions on Solaris that doesn't have a non-functional libc stub.
+ # We try pthread_create on general principles.
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]], [[pthread_t th; pthread_join(th, 0);
+ pthread_attr_init(0); pthread_cleanup_push(0, 0);
+ pthread_create(0,0,0,0); pthread_cleanup_pop(0); ]])],[acx_pthread_ok=yes],[])
+
+ LIBS="$save_LIBS"
+ CFLAGS="$save_CFLAGS"
+
+ AC_MSG_RESULT($acx_pthread_ok)
+ if test "x$acx_pthread_ok" = xyes; then
+ break;
+ fi
+
+ PTHREAD_LIBS=""
+ PTHREAD_CFLAGS=""
+done
+fi
+
+# Various other checks:
+if test "x$acx_pthread_ok" = xyes; then
+ save_LIBS="$LIBS"
+ LIBS="$PTHREAD_LIBS $LIBS"
+ save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+
+ # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
+ AC_MSG_CHECKING([for joinable pthread attribute])
+ attr_name=unknown
+ for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]], [[int attr=$attr;]])],[attr_name=$attr; break],[])
+ done
+ AC_MSG_RESULT($attr_name)
+ if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
+ AC_DEFINE_UNQUOTED(PTHREAD_CREATE_JOINABLE, $attr_name,
+ [Define to necessary symbol if this constant
+ uses a non-standard name on your system.])
+ fi
+
+ AC_MSG_CHECKING([if more special flags are required for pthreads])
+ x_rflag=no
+ case "${host_cpu}-${host_os}" in
+ *-aix* | *-freebsd* | *-darwin*) x_rflag="-D_THREAD_SAFE";;
+ *solaris* | *-osf* | *-hpux*) x_rflag="-D_REENTRANT";;
+ esac
+ AC_MSG_RESULT(${x_rflag})
+ if test "x$x_rflag" != xno; then
+ PTHREAD_CFLAGS="$x_rflag $PTHREAD_CFLAGS"
+ fi
+
+ LIBS="$save_LIBS"
+ CFLAGS="$save_CFLAGS"
+
+ # More AIX lossage: must compile with cc_r
+ AC_CHECK_PROG(PTHREAD_CC, cc_r, cc_r, ${CC})
+else
+ PTHREAD_CC="$CC"
+fi
+
+AC_SUBST(PTHREAD_LIBS)
+AC_SUBST(PTHREAD_CFLAGS)
+AC_SUBST(PTHREAD_CC)
+
+# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
+if test x"$acx_pthread_ok" = xyes; then
+ ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1])
+ :
+else
+ acx_pthread_ok=no
+ $2
+fi
+AC_LANG_POP(C)
+])dnl ACX_PTHREAD
+
+
+dnl
+dnl determine how to get IEEE math working
+dnl AC_IEEE(MESSAGE, set rd_cv_ieee_[var] variable, INCLUDES,
+dnl FUNCTION-BODY, [ACTION-IF-FOUND [,ACTION-IF-NOT-FOUND]])
+dnl
+
+dnl substitute them in all the files listed in AC_OUTPUT
+AC_SUBST(PERLFLAGS)
+
+AC_DEFUN([AC_IEEE], [
+AC_MSG_CHECKING([if IEEE math works $1])
+AC_CACHE_VAL([rd_cv_ieee_$2],
+[AC_RUN_IFELSE([AC_LANG_SOURCE([[$3
+
+#if HAVE_MATH_H
+# include <math.h>
+#endif
+
+#if HAVE_FLOAT_H
+# include <float.h>
+#endif
+
+#if HAVE_IEEEFP_H
+# include <ieeefp.h>
+#endif
+
+#if HAVE_FP_CLASS_H
+# include <fp_class.h>
+#endif
+
+/* Solaris */
+#if (! defined(HAVE_ISINF) && defined(HAVE_FPCLASS))
+# define HAVE_ISINF 1
+# define isinf(a) (fpclass(a) == FP_NINF || fpclass(a) == FP_PINF)
+#endif
+
+/* Digital UNIX */
+#if (! defined(HAVE_ISINF) && defined(HAVE_FP_CLASS) && defined(HAVE_FP_CLASS_H))
+# define HAVE_ISINF 1
+# define isinf(a) (fp_class(a) == FP_NEG_INF || fp_class(a) == FP_POS_INF)
+#endif
+
+/* AIX */
+#if (! defined(HAVE_ISINF) && defined(HAVE_CLASS))
+# define HAVE_ISINF 1
+# define isinf(a) (class(a) == FP_MINUS_INF || class(a) == FP_PLUS_INF)
+#endif
+
+#if (! defined(HAVE_ISINF) && defined(HAVE_FPCLASSIFY) && defined(FP_PLUS_INF) && defined(FP_MINUS_INF))
+# define HAVE_ISINF 1
+# define isinf(a) (fpclassify(a) == FP_MINUS_INF || fpclassify(a) == FP_PLUS_INF)
+#endif
+
+#if (! defined(HAVE_ISINF) && defined(HAVE_FPCLASSIFY) && defined(FP_INFINITE))
+# define HAVE_ISINF 1
+# define isinf(a) (fpclassify(a) == FP_INFINITE)
+#endif
+
+#include <stdio.h>
+int main(void){
+ double nan,inf,c,zero;
+ $4;
+ /* some math to see if we get a floating point exception */
+ zero=sin(0.0); /* don't let the compiler optimize us away */
+ nan=0.0/zero; /* especially here */
+ inf=1.0/zero; /* and here. I want to know if it can do the magic */
+ /* at run time without sig fpe */
+ c = inf + nan;
+ c = inf / nan;
+ if (! isnan(nan)) {printf ("not isnan(NaN) ... "); return 1;}
+ if (nan == nan) {printf ("nan == nan ... "); return 1;}
+ if (! isinf(inf)) {printf ("not isinf(oo) ... "); return 1;}
+ if (! isinf(-inf)) {printf ("not isinf(-oo) ... "); return 1;}
+ if (! inf > 0) {printf ("not inf > 0 ... "); return 1;}
+ if (! -inf < 0) {printf ("not -inf < 0 ... "); return 1;}
+ return 0;
+ }]])],[rd_cv_ieee_$2=yes],[rd_cv_ieee_$2=no],[:])])
+dnl these we run regardles is cached or not
+if test x${rd_cv_ieee_$2} = "xyes"; then
+ AC_MSG_RESULT(yes)
+ $5
+else
+ AC_MSG_RESULT(no)
+ $6
+fi
+
+])
+
+AC_DEFUN([AC_FULL_IEEE],[
+AC_LANG_PUSH(C)
+_cflags=${CFLAGS}
+AC_IEEE([out of the box], works, , , ,
+ [CFLAGS="$_cflags -ieee"
+ AC_IEEE([with the -ieee switch], switch, , , ,
+ [CFLAGS="$_cflags -qfloat=nofold"
+ AC_IEEE([with the -qfloat=nofold switch], nofold, , , ,
+ [CFLAGS="$_cflags -w -qflttrap=enable:zerodivide"
+ AC_IEEE([with the -w -qflttrap=enable:zerodivide], flttrap, , , ,
+ [CFLAGS="$_cflags -mieee"
+ AC_IEEE([with the -mieee switch], mswitch, , , ,
+ [CFLAGS="$_cflags -q float=rndsngl"
+ AC_IEEE([with the -q float=rndsngl switch], qswitch, , , ,
+ [CFLAGS="$_cflags -OPT:IEEE_NaN_inf=ON"
+ AC_IEEE([with the -OPT:IEEE_NaN_inf=ON switch], ieeenaninfswitch, , , ,
+ [CFLAGS="$_cflags -OPT:IEEE_comparisons=ON"
+ AC_IEEE([with the -OPT:IEEE_comparisons=ON switch], ieeecmpswitch, , , ,
+ [CFLAGS=$_cflags
+ AC_IEEE([with fpsetmask(0)], mask,
+ [#include <floatingpoint.h>], [fpsetmask(0)],
+ [AC_DEFINE(MUST_DISABLE_FPMASK)
+ PERLFLAGS="CCFLAGS=-DMUST_DISABLE_FPMASK"],
+ [AC_IEEE([with signal(SIGFPE,SIG_IGN)], sigfpe,
+ [#include <signal.h>], [signal(SIGFPE,SIG_IGN)],
+ [AC_DEFINE(MUST_DISABLE_SIGFPE)
+ PERLFLAGS="CCFLAGS=-DMUST_DISABLE_SIGFPE"],
+ AC_MSG_ERROR([
+Your Compiler does not do propper IEEE math ... Please find out how to
+make IEEE math work with your compiler and let me know (oetiker@ee.ethz.ch).
+Check config.log to see what went wrong ...
+]))])])])])])])])])])
+
+AC_LANG_POP(C)
+
])
projects / rrdtool.git / blobdiff