1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
dnl -*- shell-script -*-
dnl
dnl Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
dnl University Research and Technology
dnl Corporation. All rights reserved.
dnl Copyright (c) 2004-2006 The University of Tennessee and The University
dnl of Tennessee Research Foundation. All rights
dnl reserved.
dnl Copyright (c) 2004-2008 High Performance Computing Center Stuttgart,
dnl University of Stuttgart. All rights reserved.
dnl Copyright (c) 2004-2006 The Regents of the University of California.
dnl All rights reserved.
dnl Copyright (c) 2006 Los Alamos National Security, LLC. All rights
dnl reserved.
dnl Copyright (c) 2007-2009 Sun Microsystems, Inc. All rights reserved.
dnl Copyright (c) 2008-2020 Cisco Systems, Inc. All rights reserved.
dnl Copyright (c) 2015-2016 Research Organization for Information Science
dnl and Technology (RIST). All rights reserved.
dnl Copyright (c) 2021 Nanook Consulting. All rights reserved.
dnl $COPYRIGHT$
dnl
dnl Additional copyrights may follow
dnl
dnl $HEADER$
dnl
dnl This macro is necessary to get the title to be displayed first. :-)
AC_DEFUN([OMPI_SETUP_CXX_BANNER],[
opal_show_subtitle "C++ compiler and preprocessor"
])
AC_DEFUN([OMPI_PROG_CXX],[
OPAL_VAR_SCOPE_PUSH([ompi_cxxflags_save ompi_cxx_argv0])
ompi_cxxflags_save="$CXXFLAGS"
AC_PROG_CXX
CXXFLAGS="$ompi_cxxflags_save"
# Note: according to the Autoconf docs, if no C++ compiler is
# found, $CXX is still set to "g++" (!!). So make sure that we
# actually found a C++ compiler; if not, set CXX to "no", per
# thread at
# https://www.open-mpi.org/community/lists/users/2013/02/21356.php,
# which advises us to set Libtool precious variables to "no" if we
# don't want Libtool to setup that language at all.
set dummy $CXX
ompi_cxx_argv0=[$]2
OPAL_WHICH([$ompi_cxx_argv0], [OMPI_CXX_ABSOLUTE])
AS_IF([test "x$OMPI_CXX_ABSOLUTE" = "x"],
[CXX=no
OMPI_CXX_ABSOLUTE=no],
[ # If we did actually find a C++ compiler, find the C++ CPP
AC_PROG_CXXCPP])
AC_DEFINE_UNQUOTED(OMPI_CXX, "$CXX", [OMPI underlying C++ compiler])
AC_SUBST(OMPI_CXX_ABSOLUTE)
AM_CONDITIONAL([OMPI_HAVE_CXX_COMPILER], [test "$CXX" != "no"])
OPAL_VAR_SCOPE_POP
])
dnl OMPI_SETUP_CXX()
dnl ----------------
dnl Do everything required to setup the C++ compiler for the mpic++
dnl wrapper compiler (there is no C++ code in Open MPI, so we do not
dnl need to setup for internal C++ compilations). Safe to AC_REQUIRE
dnl this macro.
AC_DEFUN([OMPI_SETUP_CXX],[
# Do a little tomfoolery to get the subsection title printed first
AC_REQUIRE([OMPI_SETUP_CXX_BANNER])
# Must REQUIRE the PROG_CXX macro and not call it directly here
# for reasons well-described in the AC2.64 (and beyond) docs --
# see the docs for AC PROG_CC for details.
AC_REQUIRE([OMPI_PROG_CXX])
# If we have a C++ compiler, do some additional tests
AS_IF([test "$CXX" != "no"],
[ # Make sure we can link with the C compiler
OPAL_LANG_LINK_WITH_C([C++], [],
[cat <<EOF >&2
**********************************************************************
* It appears that your C++ compiler is unable to link against object
* files created by your C compiler. This generally indicates either
* a conflict between the options specified in CFLAGS and CXXFLAGS
* or a problem with the local compiler installation. More
* information (including exactly what command was given to the
* compilers and what error resulted when the commands were executed) is
* available in the config.log file in this directory.
**********************************************************************
EOF
AC_MSG_ERROR([C and C++ compilers are not link compatible. Can not continue.])])
])
])
|
