9 changed files with 610 additions and 17 deletions
Split View
Diff Options
-
13Makefile.in
-
1aclocal.m4
-
7config.h.in
-
363configure
-
2configure.ac
-
16libasyncns/Makefile.in
-
13libev/Makefile.in
-
199m4/acx_pthread.m4
-
13src/Makefile.in
@ -0,0 +1,199 @@ |
|||
dnl Available from the GNU Autoconf Macro Archive at: |
|||
dnl http://www.gnu.org/software/ac-archive/htmldoc/acx_pthread.html |
|||
dnl |
|||
AC_DEFUN([ACX_PTHREAD], [ |
|||
AC_REQUIRE([AC_CANONICAL_HOST]) |
|||
AC_LANG_SAVE |
|||
AC_LANG_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 $PTHREAD_CFLAGS" |
|||
|
|||
# Check for various functions. We must include pthread.h, |
|||
# since some functions may be macros. (On the Sequent, we |
|||
# need a special flag -Kthread to make this header compile.) |
|||
# We check for pthread_join because it is in -lpthread on IRIX |
|||
# while pthread_create is in libc. We check for pthread_attr_init |
|||
# due to DEC craziness with -lpthreads. We check for |
|||
# pthread_cleanup_push because it is one of the few pthread |
|||
# functions on Solaris that doesn't have a non-functional libc stub. |
|||
# We try pthread_create on general principles. |
|||
AC_TRY_LINK([#include <pthread.h>], |
|||
[pthread_t th; pthread_join(th, 0); |
|||
pthread_attr_init(0); pthread_cleanup_push(0, 0); |
|||
pthread_create(0,0,0,0); pthread_cleanup_pop(0); ], |
|||
[acx_pthread_ok=yes]) |
|||
|
|||
LIBS="$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 $PTHREAD_CFLAGS" |
|||
|
|||
# Detect AIX lossage: threads are created detached by default |
|||
# and the JOINABLE attribute has a nonstandard name (UNDETACHED). |
|||
AC_MSG_CHECKING([for joinable pthread attribute]) |
|||
AC_TRY_LINK([#include <pthread.h>], |
|||
[int attr=PTHREAD_CREATE_JOINABLE;], |
|||
ok=PTHREAD_CREATE_JOINABLE, ok=unknown) |
|||
if test x"$ok" = xunknown; then |
|||
AC_TRY_LINK([#include <pthread.h>], |
|||
[int attr=PTHREAD_CREATE_UNDETACHED;], |
|||
ok=PTHREAD_CREATE_UNDETACHED, ok=unknown) |
|||
fi |
|||
if test x"$ok" != xPTHREAD_CREATE_JOINABLE; then |
|||
AC_DEFINE(PTHREAD_CREATE_JOINABLE, $ok, |
|||
[Define to the necessary symbol if this constant |
|||
uses a non-standard name on your system.]) |
|||
fi |
|||
AC_MSG_RESULT(${ok}) |
|||
if test x"$ok" = xunknown; then |
|||
AC_MSG_WARN([we do not know how to create joinable pthreads]) |
|||
fi |
|||
|
|||
AC_MSG_CHECKING([if more special flags are required for pthreads]) |
|||
flag=no |
|||
case "${host_cpu}-${host_os}" in |
|||
*-aix* | *-freebsd* | *-darwin*) flag="-D_THREAD_SAFE";; |
|||
*solaris* | *-osf* | *-hpux*) flag="-D_REENTRANT";; |
|||
esac |
|||
AC_MSG_RESULT(${flag}) |
|||
if test "x$flag" != xno; then |
|||
PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS" |
|||
fi |
|||
|
|||
LIBS="$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_RESTORE |
|||
])dnl ACX_PTHREAD |
Write
Preview
Loading…
Cancel
Save