mirror of https://gitee.com/openkylin/cups.git
45 lines
1.2 KiB
Plaintext
45 lines
1.2 KiB
Plaintext
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dnl
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dnl Threading stuff for CUPS.
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dnl
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dnl Copyright 2007-2017 by Apple Inc.
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dnl Copyright 1997-2005 by Easy Software Products, all rights reserved.
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dnl
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dnl Licensed under Apache License v2.0. See the file "LICENSE" for more information.
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dnl
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AC_ARG_ENABLE(threads, [ --disable-threads disable multi-threading support])
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have_pthread=no
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PTHREAD_FLAGS=""
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if test "x$enable_threads" != xno; then
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AC_CHECK_HEADER(pthread.h, AC_DEFINE(HAVE_PTHREAD_H))
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if test x$ac_cv_header_pthread_h = xyes; then
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dnl Check various threading options for the platforms we support
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for flag in -lpthreads -lpthread -pthread; do
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AC_MSG_CHECKING([for pthread_create using $flag])
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SAVELIBS="$LIBS"
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LIBS="$flag $LIBS"
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AC_TRY_LINK([#include <pthread.h>],
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[pthread_create(0, 0, 0, 0);],
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have_pthread=yes,
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LIBS="$SAVELIBS")
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AC_MSG_RESULT([$have_pthread])
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if test $have_pthread = yes; then
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PTHREAD_FLAGS="-D_THREAD_SAFE -D_REENTRANT"
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# Solaris requires -D_POSIX_PTHREAD_SEMANTICS to
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# be POSIX-compliant... :(
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if test $host_os_name = sunos; then
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PTHREAD_FLAGS="$PTHREAD_FLAGS -D_POSIX_PTHREAD_SEMANTICS"
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fi
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break
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fi
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done
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fi
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fi
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AC_SUBST(PTHREAD_FLAGS)
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