mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-05-20 03:30:27 +02:00
* acinclude.m4 (ACX_PTHREAD): New.
* configure.in: Use it instead of simply looking for -lpthread. Thanks to Andreas Vögele!
This commit is contained in:
Marius Vollmer
parent
2663421ccf
commit
75bfae860a
2 changed files with 206 additions and 7 deletions
203
acinclude.m4
203
acinclude.m4
|
|
@ -107,3 +107,206 @@ ifelse([$4], , , [$4
|
|||
])dnl
|
||||
fi
|
||||
])
|
||||
|
||||
|
||||
|
||||
|
||||
dnl Available from the GNU Autoconf Macro Archive at:
|
||||
dnl http://www.gnu.org/software/ac-archive/htmldoc/acx_pthread.html
|
||||
dnl
|
||||
AC_DEFUN([ACX_PTHREAD], [
|
||||
AC_REQUIRE([AC_CANONICAL_HOST])
|
||||
AC_LANG_SAVE
|
||||
AC_LANG_C
|
||||
acx_pthread_ok=no
|
||||
|
||||
# We used to check for pthread.h first, but this fails if pthread.h
|
||||
# requires special compiler flags (e.g. on True64 or Sequent).
|
||||
# It gets checked for in the link test anyway.
|
||||
|
||||
# First of all, check if the user has set any of the PTHREAD_LIBS,
|
||||
# etcetera environment variables, and if threads linking works using
|
||||
# them:
|
||||
if test x"$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
|
||||
$2
|
||||
fi
|
||||
AC_LANG_RESTORE
|
||||
])dnl ACX_PTHREAD
|
||||
|
|
|
|||
10
configure.in
10
configure.in
|
|
@ -1001,17 +1001,13 @@ AC_ARG_WITH(threads, [ --with-threads thread interface],
|
|||
|
||||
case "$with_threads" in
|
||||
"yes" | "pthread" | "pthreads" | "pthread-threads" | "")
|
||||
AC_CHECK_LIB(pthread, main,
|
||||
LIBS="-lpthread $LIBS"
|
||||
ACX_PTHREAD(CC="$PTHREAD_CC"
|
||||
CFLAGS="$PTHREAD_CFLAGS $CFLAGS"
|
||||
LIBS="$PTHREAD_LIBS $LIBS"
|
||||
SCM_I_GSC_USE_PTHREAD_THREADS=1
|
||||
with_threads="pthreads",
|
||||
with_threads="null")
|
||||
|
||||
if test $GCC = yes; then
|
||||
AC_DEFINE(_THREAD_SAFE, 1,
|
||||
[Use thread safe versions of GNU Libc functions.])
|
||||
fi
|
||||
|
||||
AC_MSG_CHECKING(if pthread_mutexattr_settype is declared)
|
||||
AC_CACHE_VAL(guile_cv_mutexattr_settype_declared,
|
||||
[AC_TRY_COMPILE([#include <pthread.h>],
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue