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configure: move pthread check it its own file 

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
This commit is contained in:
Pavel Hrdina 2016-12-12 08:07:08 +01:00
parent 5b2d616c9e
commit 9a9623a68a
2 changed files with 57 additions and 34 deletions
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35
configure.ac
View File

@ -293,40 +293,7 @@ AC_CHECK_FUNCS_ONCE([cfmakeraw fallocate geteuid getgid getgrnam_r \
posix_memalign prlimit regexec sched_getaffinity setgroups setns \
setrlimit symlink sysctlbyname getifaddrs sched_setscheduler unshare])
dnl Availability of pthread functions. Because of $LIB_PTHREAD, we
dnl cannot use AC_CHECK_FUNCS_ONCE. LIB_PTHREAD and LIBMULTITHREAD
dnl were set during gl_INIT by gnulib.
old_LIBS=$LIBS
LIBS="$LIBS $LIB_PTHREAD $LIBMULTITHREAD"
pthread_found=yes
AC_CHECK_FUNCS([pthread_mutexattr_init])
AC_CHECK_HEADER([pthread.h],,[pthread_found=no])
if test "$ac_cv_func_pthread_mutexattr_init:$pthread_found" != "yes:yes"
then
AC_MSG_ERROR([A pthreads impl is required for building libvirt])
fi
dnl At least mingw64-winpthreads #defines pthread_sigmask to 0,
dnl which in turn causes compilation to complain about unused variables.
dnl Expose this broken implementation, so we can work around it.
AC_CACHE_CHECK([whether pthread_sigmask does anything],
[lv_cv_pthread_sigmask_works],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <signal.h>
]], [[
#ifdef pthread_sigmask
int (*foo)(int, const sigset_t *, sigset_t *) = &pthread_sigmask;
return !foo;
#endif
]])], [lv_cv_pthread_sigmask_works=yes], [lv_cv_pthread_sigmask_works=no])])
if test "x$lv_cv_pthread_sigmask_works" != xyes; then
AC_DEFINE([FUNC_PTHREAD_SIGMASK_BROKEN], [1],
[Define to 1 if pthread_sigmask is not a real function])
fi
LIBS=$old_LIBS
LIBVIRT_CHECK_PTHREAD
dnl Availability of various common headers (non-fatal if missing).
AC_CHECK_HEADERS([pwd.h regex.h sys/un.h \

56
m4/virt-pthread.m4 Normal file
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@ -0,0 +1,56 @@
dnl The libpthread.so library
dnl
dnl Copyright (C) 2016 Red Hat, Inc.
dnl
dnl This library is free software; you can redistribute it and/or
dnl modify it under the terms of the GNU Lesser General Public
dnl License as published by the Free Software Foundation; either
dnl version 2.1 of the License, or (at your option) any later version.
dnl
dnl This library is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
dnl Lesser General Public License for more details.
dnl
dnl You should have received a copy of the GNU Lesser General Public
dnl License along with this library. If not, see
dnl <http://www.gnu.org/licenses/>.
dnl
AC_DEFUN([LIBVIRT_CHECK_PTHREAD], [
old_LIBS="$LIBS"
dnl Availability of pthread functions. Because of $LIB_PTHREAD, we
dnl cannot use AC_CHECK_FUNCS_ONCE. LIB_PTHREAD and LIBMULTITHREAD
dnl were set during gl_INIT by gnulib.
LIBS="$LIBS $LIB_PTHREAD $LIBMULTITHREAD"
pthread_found=yes
AC_CHECK_FUNCS([pthread_mutexattr_init])
AC_CHECK_HEADER([pthread.h],,[pthread_found=no])
if test "$ac_cv_func_pthread_mutexattr_init:$pthread_found" != "yes:yes"
then
AC_MSG_ERROR([A pthreads impl is required for building libvirt])
fi
dnl At least mingw64-winpthreads #defines pthread_sigmask to 0,
dnl which in turn causes compilation to complain about unused variables.
dnl Expose this broken implementation, so we can work around it.
AC_CACHE_CHECK([whether pthread_sigmask does anything],
[lv_cv_pthread_sigmask_works],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <signal.h>
]], [[
#ifdef pthread_sigmask
int (*foo)(int, const sigset_t *, sigset_t *) = &pthread_sigmask;
return !foo;
#endif
]])], [lv_cv_pthread_sigmask_works=yes], [lv_cv_pthread_sigmask_works=no])])
if test "x$lv_cv_pthread_sigmask_works" != xyes; then
AC_DEFINE([FUNC_PTHREAD_SIGMASK_BROKEN], [1],
[Define to 1 if pthread_sigmask is not a real function])
fi
LIBS="$old_LIBS"
])