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libcares/m4/cares-reentrant.m4  view on Meta::CPAN

AC_DEFUN([CARES_CHECK_NEED_REENTRANT_FUNCTIONS_R], [
  if test "$tmp_need_reentrant" = "no"; then
    CARES_CHECK_NEED_REENTRANT_GMTIME_R
  fi
  if test "$tmp_need_reentrant" = "no"; then
    CARES_CHECK_NEED_REENTRANT_LOCALTIME_R
  fi
  if test "$tmp_need_reentrant" = "no"; then
    CARES_CHECK_NEED_REENTRANT_STRERROR_R
  fi
  if test "$tmp_need_reentrant" = "no"; then
    CARES_CHECK_NEED_REENTRANT_STRTOK_R
  fi
  if test "$tmp_need_reentrant" = "no"; then
    CARES_CHECK_NEED_REENTRANT_INET_NTOA_R
  fi
  if test "$tmp_need_reentrant" = "no"; then
    CARES_CHECK_NEED_REENTRANT_GETHOSTBYADDR_R
  fi
  if test "$tmp_need_reentrant" = "no"; then
    CARES_CHECK_NEED_REENTRANT_GETHOSTBYNAME_R
  fi
  if test "$tmp_need_reentrant" = "no"; then
    CARES_CHECK_NEED_REENTRANT_GETPROTOBYNAME_R
  fi
  if test "$tmp_need_reentrant" = "no"; then
    CARES_CHECK_NEED_REENTRANT_GETSERVBYPORT_R
  fi
])


dnl CARES_CHECK_NEED_REENTRANT_SYSTEM
dnl -------------------------------------------------
dnl Checks if the preprocessor _REENTRANT definition
dnl must be unconditionally done for this platform.
dnl Internal macro for CARES_CONFIGURE_REENTRANT.

AC_DEFUN([CARES_CHECK_NEED_REENTRANT_SYSTEM], [
  case $host_os in
    solaris*)
      tmp_need_reentrant="yes"
      ;;
    *)
      tmp_need_reentrant="no"
      ;;
  esac
])


dnl CARES_CHECK_NEED_THREAD_SAFE_SYSTEM
dnl -------------------------------------------------
dnl Checks if the preprocessor _THREAD_SAFE definition
dnl must be unconditionally done for this platform.
dnl Internal macro for CARES_CONFIGURE_THREAD_SAFE.

AC_DEFUN([CARES_CHECK_NEED_THREAD_SAFE_SYSTEM], [
  case $host_os in
    aix[[123]].* | aix4.[[012]].*)
      dnl aix 4.2 and older
      tmp_need_thread_safe="no"
      ;;
    aix*)
      dnl AIX 4.3 and newer
      tmp_need_thread_safe="yes"
      ;;
    *)
      tmp_need_thread_safe="no"
      ;;
  esac
])


dnl CARES_CONFIGURE_FROM_NOW_ON_WITH_REENTRANT
dnl -------------------------------------------------
dnl This macro ensures that configuration tests done
dnl after this will execute with preprocessor symbol
dnl _REENTRANT defined. This macro also ensures that
dnl the generated config file defines NEED_REENTRANT
dnl and that in turn setup.h will define _REENTRANT.
dnl Internal macro for CARES_CONFIGURE_REENTRANT.

AC_DEFUN([CARES_CONFIGURE_FROM_NOW_ON_WITH_REENTRANT], [
AC_DEFINE(NEED_REENTRANT, 1,
  [Define to 1 if _REENTRANT preprocessor symbol must be defined.])
cat >>confdefs.h <<_EOF
#ifndef _REENTRANT
#  define _REENTRANT
#endif
_EOF
])


dnl CARES_CONFIGURE_FROM_NOW_ON_WITH_THREAD_SAFE
dnl -------------------------------------------------
dnl This macro ensures that configuration tests done
dnl after this will execute with preprocessor symbol
dnl _THREAD_SAFE defined. This macro also ensures that
dnl the generated config file defines NEED_THREAD_SAFE
dnl and that in turn setup.h will define _THREAD_SAFE.
dnl Internal macro for CARES_CONFIGURE_THREAD_SAFE.

AC_DEFUN([CARES_CONFIGURE_FROM_NOW_ON_WITH_THREAD_SAFE], [
AC_DEFINE(NEED_THREAD_SAFE, 1,
  [Define to 1 if _THREAD_SAFE preprocessor symbol must be defined.])
cat >>confdefs.h <<_EOF
#ifndef _THREAD_SAFE
#  define _THREAD_SAFE
#endif
_EOF
])


dnl CARES_CONFIGURE_REENTRANT
dnl -------------------------------------------------
dnl This first checks if the preprocessor _REENTRANT
dnl symbol is already defined. If it isn't currently
dnl defined a set of checks are performed to verify
dnl if its definition is required to make visible to
dnl the compiler a set of *_r functions. Finally, if
dnl _REENTRANT is already defined or needed it takes
dnl care of making adjustments necessary to ensure
dnl that it is defined equally for further configure
dnl tests and generated config file.

AC_DEFUN([CARES_CONFIGURE_REENTRANT], [
  AC_PREREQ([2.50])dnl
  #

libcares/m4/cares-reentrant.m4  view on Meta::CPAN

    tmp_reentrant_initially_defined="yes"
  ],[
    AC_MSG_RESULT([no])
    tmp_reentrant_initially_defined="no"
  ])
  #
  if test "$tmp_reentrant_initially_defined" = "no"; then
    AC_MSG_CHECKING([if _REENTRANT is actually needed])
    CARES_CHECK_NEED_REENTRANT_SYSTEM
    if test "$tmp_need_reentrant" = "no"; then
      CARES_CHECK_NEED_REENTRANT_ERRNO
    fi
    if test "$tmp_need_reentrant" = "no"; then
      CARES_CHECK_NEED_REENTRANT_FUNCTIONS_R
    fi
    if test "$tmp_need_reentrant" = "yes"; then
      AC_MSG_RESULT([yes])
    else
      AC_MSG_RESULT([no])
    fi
  fi
  #
  AC_MSG_CHECKING([if _REENTRANT is onwards defined])
  if test "$tmp_reentrant_initially_defined" = "yes" ||
    test "$tmp_need_reentrant" = "yes"; then
    CARES_CONFIGURE_FROM_NOW_ON_WITH_REENTRANT
    AC_MSG_RESULT([yes])
  else
    AC_MSG_RESULT([no])
  fi
  #
])


dnl CARES_CONFIGURE_THREAD_SAFE
dnl -------------------------------------------------
dnl This first checks if the preprocessor _THREAD_SAFE
dnl symbol is already defined. If it isn't currently
dnl defined a set of checks are performed to verify
dnl if its definition is required. Finally, if
dnl _THREAD_SAFE is already defined or needed it takes
dnl care of making adjustments necessary to ensure
dnl that it is defined equally for further configure
dnl tests and generated config file.

AC_DEFUN([CARES_CONFIGURE_THREAD_SAFE], [
  AC_PREREQ([2.50])dnl
  #
  AC_MSG_CHECKING([if _THREAD_SAFE is already defined])
  AC_COMPILE_IFELSE([
    AC_LANG_PROGRAM([[
    ]],[[
#ifdef _THREAD_SAFE
      int dummy=1;
#else
      force compilation error
#endif
    ]])
  ],[
    AC_MSG_RESULT([yes])
    tmp_thread_safe_initially_defined="yes"
  ],[
    AC_MSG_RESULT([no])
    tmp_thread_safe_initially_defined="no"
  ])
  #
  if test "$tmp_thread_safe_initially_defined" = "no"; then
    AC_MSG_CHECKING([if _THREAD_SAFE is actually needed])
    CARES_CHECK_NEED_THREAD_SAFE_SYSTEM
    if test "$tmp_need_thread_safe" = "yes"; then
      AC_MSG_RESULT([yes])
    else
      AC_MSG_RESULT([no])
    fi
  fi
  #
  AC_MSG_CHECKING([if _THREAD_SAFE is onwards defined])
  if test "$tmp_thread_safe_initially_defined" = "yes" ||
    test "$tmp_need_thread_safe" = "yes"; then
    CARES_CONFIGURE_FROM_NOW_ON_WITH_THREAD_SAFE
    AC_MSG_RESULT([yes])
  else
    AC_MSG_RESULT([no])
  fi
  #
])