hdf5/m4/aclocal_cxx.m4

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dnl *********************************
dnl PURPOSE
dnl  Contains Macros for HDF5 C++
dnl *********************************
dnl
dnl Special characteristics that have no autoconf counterpart but that
dnl we need as part of the C++ support.  To distinquish these, they
dnl have a [PAC] prefix.

dnl Checking if C++ needs old style header files in includes
AC_DEFUN([PAC_PROG_CXX_HEADERS],[
  AC_MSG_CHECKING([if $CXX needs old style header files in includes])
  TEST_SRC="`(echo \"#define OLD_HEADER_FILENAME 1\"; cat $srcdir/config/cmake_ext_mod/HDFCXXTests.cpp)`"

  AC_LINK_IFELSE([AC_LANG_SOURCE([$TEST_SRC])],
    [AC_MSG_RESULT([no])],
    [AC_MSG_RESULT([yes])
    CXXFLAGS="${CXXFLAGS} -DOLD_HEADER_FILENAME"
    AM_CXXFLAGS="${AM_CXXFLAGS} -DOLD_HEADER_FILENAME"])
])

dnl Checking if ++ can handle namespaces
AC_DEFUN([PAC_PROG_CXX_NAMESPACE],[
  AC_MSG_CHECKING([if $CXX can handle namespaces])
  TEST_SRC="`(echo \"#define HDF_NO_NAMESPACE 1\"; cat $srcdir/config/cmake_ext_mod/HDFCXXTests.cpp)`"

  AC_LINK_IFELSE([AC_LANG_SOURCE([$TEST_SRC])], [AC_MSG_RESULT([yes])],
     [AC_MSG_RESULT([no])
     CXXFLAGS="${CXXFLAGS} -DHDF_NO_NAMESPACE"
     AM_CXXFLAGS="${AM_CXXFLAGS} -DHDF_NO_NAMESPACE"])
])

dnl Checking if C++ supports std
AC_DEFUN([PAC_PROG_CXX_STD],[
  AC_MSG_CHECKING([if $CXX supports std])
  TEST_SRC="`(echo \"#define HDF_NO_STD 1\"; cat $srcdir/config/cmake_ext_mod/HDFCXXTests.cpp)`"

  AC_LINK_IFELSE([AC_LANG_SOURCE([$TEST_SRC])], [AC_MSG_RESULT([yes])],
     [AC_MSG_RESULT([no])
     CXXFLAGS="${CXXFLAGS} -DH5_NO_STD"
     AM_CXXFLAGS="${AM_CXXFLAGS} -DH5_NO_STD"])
])

dnl Checking if C++ has offsetof extension
AC_DEFUN([PAC_PROG_CXX_OFFSETOF],[
  AC_MSG_CHECKING([if $CXX has offsetof extension])
  TEST_SRC="`(echo \"#define CXX_HAVE_OFFSETOF 1\"; cat $srcdir/config/cmake_ext_mod/HDFCXXTests.cpp)`"

  AC_LINK_IFELSE([AC_LANG_SOURCE([$TEST_SRC])],[AC_MSG_RESULT([yes])
    AC_DEFINE([CXX_HAVE_OFFSETOF], [1], [Define if C++ compiler recognizes offsetof])],
    AC_MSG_RESULT([no]))
])

dnl Checking if C++ can handle static cast
AC_DEFUN([PAC_PROG_CXX_STATIC_CAST],[
  AC_MSG_CHECKING([if $CXX can handle static cast])
  TEST_SRC="`(echo \"#define NO_STATIC_CAST 1\"; cat $srcdir/config/cmake_ext_mod/HDFCXXTests.cpp)`"

  AC_LINK_IFELSE([AC_LANG_SOURCE([$TEST_SRC])], [AC_MSG_RESULT([yes])],
    [AC_MSG_RESULT([no])
    CXXFLAGS="${CXXFLAGS} -DNO_STATIC_CAST"
    AM_CXXFLAGS="${AM_CXXFLAGS} -DNO_STATIC_CAST"])
])