kc3-lang/gnulib/m4/pthread.m4

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• Hash : a3fd683d
  Author :
  Date : 2017-01-01T02:59:23
  

  version-etc: new year
  
  * build-aux/gendocs.sh (version):
  * doc/gendocs_template:
  * doc/gendocs_template_min:
  * doc/gnulib.texi:
  * lib/version-etc.c (COPYRIGHT_YEAR):
  Update copyright dates by hand in templates and the like.
  * all files: Run 'make update-copyright'.
  

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• m4/pthread.m4

• # pthread.m4 serial 10
  dnl Copyright (C) 2009-2017 Free Software Foundation, Inc.
  dnl This file is free software; the Free Software Foundation
  dnl gives unlimited permission to copy and/or distribute it,
  dnl with or without modifications, as long as this notice is preserved.
  
  AC_DEFUN([gl_PTHREAD_CHECK],
  [
     AC_REQUIRE([gl_PTHREAD_DEFAULTS])
     gl_CHECK_NEXT_HEADERS([pthread.h])
     if test $ac_cv_header_pthread_h = yes; then
       HAVE_PTHREAD_H=1
       # mingw 3.0 uses winpthreads which installs broken macros via <pthread.h>
       AC_CACHE_CHECK([whether <pthread.h> pollutes the namespace],
        [gl_cv_header_pthread_h_pollution],
        [AC_COMPILE_IFELSE(
          [AC_LANG_PROGRAM(
            [[#include <pthread.h>
              #if defined strtok_r || defined localtime_r
              #error
               break me
              #endif
            ]])],
          [gl_cv_header_pthread_h_pollution=no],
          [gl_cv_header_pthread_h_pollution=yes])])
     else
       HAVE_PTHREAD_H=0
     fi
  
     AC_CHECK_TYPES([pthread_t, pthread_spinlock_t], [], [],
       [AC_INCLUDES_DEFAULT[
        #if HAVE_PTHREAD_H
         #include <pthread.h>
        #endif]])
     if test $ac_cv_type_pthread_t != yes; then
       HAVE_PTHREAD_T=0
     fi
     if test $ac_cv_type_pthread_spinlock_t != yes; then
       HAVE_PTHREAD_SPINLOCK_T=0
     fi
  
     if test $ac_cv_header_pthread_h != yes ||
        test $ac_cv_type_pthread_t != yes ||
        test $ac_cv_type_pthread_spinlock_t != yes; then
       PTHREAD_H='pthread.h'
       AC_LIBOBJ([pthread])
     elif test $gl_cv_header_pthread_h_pollution = yes; then
       PTHREAD_H=pthread.h
     else
       PTHREAD_H=
     fi
     AC_SUBST([PTHREAD_H])
     AM_CONDITIONAL([GL_GENERATE_PTHREAD_H], [test -n "$PTHREAD_H"])
  
     LIB_PTHREAD=
     if test $ac_cv_header_pthread_h = yes; then
       dnl We cannot use AC_SEARCH_LIBS here, because on OSF/1 5.1 pthread_join
       dnl is defined as a macro which expands to __phread_join, and libpthread
       dnl contains a definition for __phread_join but none for pthread_join.
       dnl Also, FreeBSD 9 puts pthread_create in libpthread and pthread_join
       dnl in libc, whereas on IRIX 6.5 the reverse is true; so check for both.
       AC_CACHE_CHECK([for library containing pthread_create and pthread_join],
         [gl_cv_lib_pthread],
         [gl_saved_libs=$LIBS
          gl_cv_lib_pthread=
          for gl_lib_prefix in '' '-pthread' '-lpthread'; do
            LIBS="$gl_lib_prefix $gl_saved_libs"
            AC_LINK_IFELSE(
              [AC_LANG_PROGRAM(
                 [[#include <pthread.h>
                   void *noop (void *p) { return p; }]],
                 [[pthread_t pt;
                   void *arg = 0;
                   pthread_create (&pt, 0, noop, arg);
                   pthread_join (pthread_self (), &arg);]])],
              [if test -z "$gl_lib_prefix"; then
                 gl_cv_lib_pthread="none required"
               else
                 gl_cv_lib_pthread=$gl_lib_prefix
               fi])
            test -n "$gl_cv_lib_pthread" && break
          done
          LIBS="$gl_saved_libs"
         ])
       if test "$gl_cv_lib_pthread" != "none required"; then
         LIB_PTHREAD="$gl_cv_lib_pthread"
       fi
     fi
     AC_SUBST([LIB_PTHREAD])
  
     AC_REQUIRE([AC_C_RESTRICT])
  ])
  
  AC_DEFUN([gl_PTHREAD_DEFAULTS],
  [
    dnl Assume proper GNU behavior unless another module says otherwise.
    HAVE_PTHREAD_H=1;              AC_SUBST([HAVE_PTHREAD_H])
    HAVE_PTHREAD_T=1;              AC_SUBST([HAVE_PTHREAD_T])
    HAVE_PTHREAD_SPINLOCK_T=1;     AC_SUBST([HAVE_PTHREAD_SPINLOCK_T])
  ])
  

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