m4/pthread-thread.m4

   1 # pthread-thread.m4 serial 2
   2 dnl Copyright (C) 2019-2021 Free Software Foundation, Inc.
   3 dnl This file is free software; the Free Software Foundation
   4 dnl gives unlimited permission to copy and/or distribute it,
   5 dnl with or without modifications, as long as this notice is preserved.
   6
   7 AC_DEFUN([gl_PTHREAD_THREAD],
   8 [
   9   AC_REQUIRE([gl_PTHREAD_H])
  10   AC_REQUIRE([AC_CANONICAL_HOST])
  11
  12   if { case "$host_os" in mingw*) true;; *) false;; esac; } \
  13      && test $gl_threads_api = windows; then
  14     dnl Choose function names that don't conflict with the mingw-w64 winpthreads
  15     dnl library.
  16     REPLACE_PTHREAD_CREATE=1
  17     REPLACE_PTHREAD_ATTR_INIT=1
  18     REPLACE_PTHREAD_ATTR_GETDETACHSTATE=1
  19     REPLACE_PTHREAD_ATTR_SETDETACHSTATE=1
  20     REPLACE_PTHREAD_ATTR_DESTROY=1
  21     REPLACE_PTHREAD_SELF=1
  22     REPLACE_PTHREAD_EQUAL=1
  23     REPLACE_PTHREAD_DETACH=1
  24     REPLACE_PTHREAD_JOIN=1
  25     REPLACE_PTHREAD_EXIT=1
  26   else
  27     if test $HAVE_PTHREAD_H = 0; then
  28       HAVE_PTHREAD_CREATE=0
  29       HAVE_PTHREAD_ATTR_INIT=0
  30       HAVE_PTHREAD_ATTR_GETDETACHSTATE=0
  31       HAVE_PTHREAD_ATTR_SETDETACHSTATE=0
  32       HAVE_PTHREAD_ATTR_DESTROY=0
  33       HAVE_PTHREAD_SELF=0
  34       HAVE_PTHREAD_EQUAL=0
  35       HAVE_PTHREAD_DETACH=0
  36       HAVE_PTHREAD_JOIN=0
  37       HAVE_PTHREAD_EXIT=0
  38     else
  39       dnl On HP-UX 11.11, pthread_create() and pthread_attr_init() are only
  40       dnl defined as inline functions.
  41       AC_CACHE_CHECK([whether pthread_create exists as a global function],
  42         [gl_cv_func_pthread_create],
  43         [saved_LIBS="$LIBS"
  44          LIBS="$LIBS $LIBPMULTITHREAD"
  45          AC_LINK_IFELSE(
  46            [AC_LANG_SOURCE(
  47               [[extern
  48                 #ifdef __cplusplus
  49                 "C"
  50                 #endif
  51                 int pthread_create (void);
  52                 int main ()
  53                 {
  54                   return pthread_create ();
  55                 }
  56               ]])],
  57            [gl_cv_func_pthread_create=yes],
  58            [gl_cv_func_pthread_create=no])
  59          LIBS="$saved_LIBS"
  60         ])
  61       if test $gl_cv_func_pthread_create = no; then
  62         REPLACE_PTHREAD_CREATE=1
  63         REPLACE_PTHREAD_ATTR_INIT=1
  64         AC_DEFINE([PTHREAD_CREATE_IS_INLINE], [1],
  65           [Define if pthread_create is an inline function.])
  66       fi
  67     fi
  68   fi
  69 ])