--- /dev/null
+dnl
+dnl Macro: unet_NONBLOCKING
+dnl
+dnl Check whether we have posix, bsd or sysv non-blocking sockets and
+dnl define respectively NBLOCK_POSIX, NBLOCK_BSD or NBLOCK_SYSV.
+dnl
+AC_DEFUN([unet_NONBLOCKING],
+[dnl Do we have posix, bsd or sysv non-blocking stuff ?
+AC_CACHE_CHECK([for posix non-blocking], unet_cv_sys_nonblocking_posix,
+[AC_TRY_RUN([#include <sys/types.h>
+#include <sys/socket.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/file.h>
+#include <signal.h>
+$ac_cv_type_signal alarmed() { exit(1); }
+int main(void)
+{
+ char b[12];
+ struct sockaddr x;
+ size_t l = sizeof(x);
+ int f = socket(AF_INET, SOCK_DGRAM, 0);
+ if (f >= 0 && !(fcntl(f, F_SETFL, O_NONBLOCK)))
+ {
+ signal(SIGALRM, alarmed);
+ alarm(2);
+ recvfrom(f, b, 12, 0, &x, &l);
+ alarm(0);
+ exit(0);
+ }
+ exit(1);
+}], unet_cv_sys_nonblocking_posix=yes, unet_cv_sys_nonblocking_posix=no)])
+if test $unet_cv_sys_nonblocking_posix = yes; then
+ AC_DEFINE([NBLOCK_POSIX],,[Define if you have POSIX non-blocking sockets.])
+else
+AC_CACHE_CHECK([for bsd non-blocking], unet_cv_sys_nonblocking_bsd,
+[AC_TRY_RUN([#include <sys/types.h>
+#include <sys/socket.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/file.h>
+#include <signal.h>
+$ac_cv_type_signal alarmed() { exit(1); }
+int main(void)
+{
+ char b[12];
+ struct sockaddr x;
+ size_t l = sizeof(x);
+ int f = socket(AF_INET, SOCK_DGRAM, 0);
+ if (f >= 0 && !(fcntl(f, F_SETFL, O_NDELAY)))
+ {
+ signal(SIGALRM, alarmed);
+ alarm(2);
+ recvfrom(f, b, 12, 0, &x, &l);
+ alarm(0);
+ exit(0);
+ }
+ exit(1);
+}], unet_cv_sys_nonblocking_bsd=yes, unet_cv_sys_nonblocking_bsd=no)])
+if test $unet_cv_sys_nonblocking_bsd = yes; then
+ AC_DEFINE([NBLOCK_BSD],,[Define if you have BSD non-blocking sockets.])
+else
+ AC_DEFINE([NBLOCK_SYSV],,[Define if you have SysV non-blocking sockets.])
+fi
+fi])
+
+dnl
+dnl Macro: unet_SIGNALS
+dnl
+dnl Check if we have posix signals, reliable bsd signals or
+dnl unreliable sysv signals and define respectively POSIX_SIGNALS,
+dnl BSD_RELIABLE_SIGNALS or SYSV_UNRELIABLE_SIGNALS.
+dnl
+AC_DEFUN([unet_SIGNALS],
+[dnl Do we have posix signals, reliable bsd signals or unreliable sysv signals ?
+AC_CACHE_CHECK([for posix signals], unet_cv_sys_signal_posix,
+[AC_TRY_COMPILE([#include <signal.h>],
+[sigaction(SIGTERM, (struct sigaction *)0L, (struct sigaction *)0L)],
+unet_cv_sys_signal_posix=yes, unet_cv_sys_signal_posix=no)])
+if test $unet_cv_sys_signal_posix = yes; then
+ AC_DEFINE([POSIX_SIGNALS],,[Define if you have POSIX signals.])
+else
+AC_CACHE_CHECK([for bsd reliable signals], unet_cv_sys_signal_bsd,
+[AC_TRY_RUN([#include <signal.h>
+int calls = 0;
+$ac_cv_type_signal handler()
+{
+ if (calls) return;
+ calls++;
+ kill(getpid(), SIGTERM);
+ sleep(1);
+}
+int main(void)
+{
+ signal(SIGTERM, handler);
+ kill(getpid(), SIGTERM);
+ exit (0);
+}], unet_cv_sys_signal_bsd=yes, unet_cv_sys_signal_bsd=no)])
+if test $unet_cv_sys_signal_bsd = yes; then
+ AC_DEFINE([BSD_RELIABLE_SIGNALS],,[Define if you have (reliable) BSD signals.])
+else
+ AC_DEFINE([SYSV_UNRELIABLE_SIGNALS],,[Define if you have (unreliable) SysV signals.])
+fi
+fi])
+
+dnl
+dnl Macro: unet_CHECK_TYPE_SIZES
+dnl
+dnl Check the size of several types and define a valid int16_t and int32_t.
+dnl
+AC_DEFUN([unet_CHECK_TYPE_SIZES],
+[dnl Check type sizes
+AC_CHECK_SIZEOF(short)
+AC_CHECK_SIZEOF(int)
+AC_CHECK_SIZEOF(long)
+AC_CHECK_SIZEOF(void *)
+AC_CHECK_SIZEOF(int64_t)
+AC_CHECK_SIZEOF(long long)
+if test "$ac_cv_sizeof_int" = 2 ; then
+ AC_CHECK_TYPE(int16_t, int)
+ AC_CHECK_TYPE(uint16_t, unsigned int)
+elif test "$ac_cv_sizeof_short" = 2 ; then
+ AC_CHECK_TYPE(int16_t, short)
+ AC_CHECK_TYPE(uint16_t, unsigned short)
+else
+ AC_MSG_ERROR([Cannot find a type with size of 16 bits])
+fi
+if test "$ac_cv_sizeof_int" = 4 ; then
+ AC_CHECK_TYPE(int32_t, int)
+ AC_CHECK_TYPE(uint32_t, unsigned int)
+elif test "$ac_cv_sizeof_short" = 4 ; then
+ AC_CHECK_TYPE(int32_t, short)
+ AC_CHECK_TYPE(uint32_t, unsigned short)
+elif test "$ac_cv_sizeof_long" = 4 ; then
+ AC_CHECK_TYPE(int32_t, long)
+ AC_CHECK_TYPE(uint32_t, unsigned long)
+else
+ AC_MSG_ERROR([Cannot find a type with size of 32 bits])
+fi
+if test "$ac_cv_sizeof_int64_t" = 8 ; then
+ AC_CHECK_TYPE(int64_t)
+ AC_CHECK_TYPE(uint64_t)
+elif test "$ac_cv_sizeof_long_long" = 8 ; then
+ AC_CHECK_TYPE(int64_t, long long)
+ AC_CHECK_TYPE(uint64_t, unsigned long long)
+else
+ AC_MSG_ERROR([Cannot find a type with size of 64 bits])
+fi])
+
+dnl Written by John Hawkinson <jhawk@mit.edu>. This code is in the Public
+dnl Domain.
+dnl
+dnl This test is for network applications that need socket() and
+dnl gethostbyname() -ish functions. Under Solaris, those applications need to
+dnl link with "-lsocket -lnsl". Under IRIX, they should *not* link with
+dnl "-lsocket" because libsocket.a breaks a number of things (for instance:
+dnl gethostbyname() under IRIX 5.2, and snoop sockets under most versions of
+dnl IRIX).
+dnl
+dnl Unfortunately, many application developers are not aware of this, and
+dnl mistakenly write tests that cause -lsocket to be used under IRIX. It is
+dnl also easy to write tests that cause -lnsl to be used under operating
+dnl systems where neither are necessary (or useful), such as SunOS 4.1.4, which
+dnl uses -lnsl for TLI.
+dnl
+dnl This test exists so that every application developer does not test this in
+dnl a different, and subtly broken fashion.
+dnl
+dnl It has been argued that this test should be broken up into two seperate
+dnl tests, one for the resolver libraries, and one for the libraries necessary
+dnl for using Sockets API. Unfortunately, the two are carefully intertwined and
+dnl allowing the autoconf user to use them independantly potentially results in
+dnl unfortunate ordering dependancies -- as such, such component macros would
+dnl have to carefully use indirection and be aware if the other components were
+dnl executed. Since other autoconf macros do not go to this trouble, and almost
+dnl no applications use sockets without the resolver, this complexity has not
+dnl been implemented.
+dnl
+dnl The check for libresolv is in case you are attempting to link statically
+dnl and happen to have a libresolv.a lying around (and no libnsl.a).
+dnl
+AC_DEFUN([AC_LIBRARY_NET], [
+ # Most operating systems have gethostbyname() in the default searched
+ # libraries (i.e. libc):
+ AC_CHECK_FUNC(gethostbyname, ,
+ # Some OSes (eg. Solaris) place it in libnsl:
+ AC_CHECK_LIB(nsl, gethostbyname, ,
+ # Some strange OSes (SINIX) have it in libsocket:
+ AC_CHECK_LIB(socket, gethostbyname, ,
+ # Unfortunately libsocket sometimes depends on libnsl.
+ # AC_CHECK_LIB's API is essentially broken so the following
+ # ugliness is necessary:
+ AC_CHECK_LIB(socket, gethostbyname,
+ LIBS="-lsocket -lnsl $LIBS",
+ AC_CHECK_LIB(resolv, gethostbyname),
+ -lnsl)
+ )
+ )
+ )
+ AC_CHECK_FUNC(socket, , AC_CHECK_LIB(socket, socket, ,
+ AC_CHECK_LIB(socket, socket, LIBS="-lsocket -lnsl $LIBS", , -lnsl)))
+ ])
projects / ircu2.10.12-pk.git / blobdiff