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122 lines
3.5 KiB
Plaintext
122 lines
3.5 KiB
Plaintext
dnl -------------------------------------------------------------------------
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dnl -------------------------------------------------------------------------
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dnl
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dnl Copyright by the Board of Trustees of the University of Illinois.
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dnl All rights reserved.
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dnl
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dnl This file is part of HDF5. The full HDF5 copyright notice, including
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dnl terms governing use, modification, and redistribution, is contained in
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dnl the files COPYING and Copyright.html. COPYING can be found at the root
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dnl of the source code distribution tree; Copyright.html can be found at the
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dnl root level of an installed copy of the electronic HDF5 document set and
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dnl is linked from the top-level documents page. It can also be found at
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dnl http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have
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dnl access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu.
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dnl
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dnl -------------------------------------------------------------------------
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dnl -------------------------------------------------------------------------
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dnl *********************************
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dnl PURPOSE
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dnl Contains Macros for HDF5 C++
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dnl *********************************
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dnl
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dnl Special characteristics that have no autoconf counterpart but that
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dnl we need as part of the C++ support. To distinquish these, they
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dnl have a [PAC] prefix.
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dnl Checking if C++ needs old style header files in includes
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AC_DEFUN([PAC_PROG_CXX_HEADERS],[
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AC_MSG_CHECKING([if $CXX needs old style header files in includes])
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AC_LINK_IFELSE([AC_LANG_SOURCE([
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#include <iostream>
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int main(void) { return 0; }
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])],
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[AC_MSG_RESULT([no])],
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[AC_MSG_RESULT([yes])
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CXXFLAGS="${CXXFLAGS} -DOLD_HEADER_FILENAME"
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AM_CXXFLAGS="${AM_CXXFLAGS} -DOLD_HEADER_FILENAME"])
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])
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dnl Checking if ++ can handle namespaces
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AC_DEFUN([PAC_PROG_CXX_NAMESPACE],[
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AC_MSG_CHECKING([if $CXX can handle namespaces])
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AC_LINK_IFELSE([AC_LANG_SOURCE([
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namespace H5 {
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int fnord;
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}
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int main(void) {
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using namespace H5;
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fnord = 37;
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return 0;
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}
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])], [AC_MSG_RESULT([yes])],
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[AC_MSG_RESULT([no])
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CXXFLAGS="${CXXFLAGS} -DH5_NO_NAMESPACE"
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AM_CXXFLAGS="${AM_CXXFLAGS} -DH5_NO_NAMESPACE"])
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])
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dnl Checking if C++ supports std
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AC_DEFUN([PAC_PROG_CXX_STD],[
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AC_MSG_CHECKING([if $CXX supports std])
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AC_LINK_IFELSE([AC_LANG_SOURCE([
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#include <string>
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using namespace std;
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int main(void) {
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string myString("testing namespace std");
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return 0;
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}
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])], [AC_MSG_RESULT([yes])],
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[AC_MSG_RESULT([no])
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CXXFLAGS="${CXXFLAGS} -DH5_NO_STD"
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AM_CXXFLAGS="${AM_CXXFLAGS} -DH5_NO_STD"])
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])
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dnl Checking if C++ has offsetof extension
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AC_DEFUN([PAC_PROG_CXX_OFFSETOF],[
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AC_MSG_CHECKING([if $CXX has offsetof extension])
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AC_LINK_IFELSE([AC_LANG_PROGRAM([
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#include <stdio.h>
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#include <stddef.h>
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],[
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struct index_st
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{
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unsigned char type;
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unsigned char num;
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unsigned int len;
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};
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typedef struct index_st index_t;
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int x,y;
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x = offsetof(struct index_st, len);
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y = offsetof(index_t, num)
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])],[AC_MSG_RESULT([yes])
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AC_DEFINE([CXX_HAVE_OFFSETOF], [1], [Define if C++ compiler recognizes offsetof])],
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AC_MSG_RESULT([no]))
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])
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dnl Checking if C++ can handle static cast
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AC_DEFUN([PAC_PROG_CXX_STATIC_CAST],[
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AC_MSG_CHECKING([if $CXX can handle static cast])
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AC_LINK_IFELSE([AC_LANG_SOURCE([
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int main(void) {
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float test_float;
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int test_int;
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test_float = 37.0;
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test_int = static_cast <int> (test_float);
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return 0;
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}
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])], [AC_MSG_RESULT([yes])],
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[AC_MSG_RESULT([no])
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CXXFLAGS="${CXXFLAGS} -DNO_STATIC_CAST"
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AM_CXXFLAGS="${AM_CXXFLAGS} -DNO_STATIC_CAST"])
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])
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