source: trunk/m4/ax_compiler_vendor.m4 @ 2724

Last change on this file since 2724 was 2724, checked in by Peter, 7 years ago

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1# ===========================================================================
2#    http://www.gnu.org/software/autoconf-archive/ax_compiler_vendor.html
3# ===========================================================================
4#
5# SYNOPSIS
6#
7#   AX_COMPILER_VENDOR
8#
9# DESCRIPTION
10#
11#   Determine the vendor of the C/C++ compiler, e.g., gnu, intel, ibm, sun,
12#   hp, borland, comeau, dec, cray, kai, lcc, metrowerks, sgi, microsoft,
13#   watcom, etc. The vendor is returned in the cache variable
14#   $ax_cv_c_compiler_vendor for C and $ax_cv_cxx_compiler_vendor for C++.
15#
16# LICENSE
17#
18#   Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
19#   Copyright (c) 2008 Matteo Frigo
20#
21#   This program is free software: you can redistribute it and/or modify it
22#   under the terms of the GNU General Public License as published by the
23#   Free Software Foundation, either version 3 of the License, or (at your
24#   option) any later version.
25#
26#   This program is distributed in the hope that it will be useful, but
27#   WITHOUT ANY WARRANTY; without even the implied warranty of
28#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
29#   Public License for more details.
30#
31#   You should have received a copy of the GNU General Public License along
32#   with this program. If not, see <http://www.gnu.org/licenses/>.
33#
34#   As a special exception, the respective Autoconf Macro's copyright owner
35#   gives unlimited permission to copy, distribute and modify the configure
36#   scripts that are the output of Autoconf when processing the Macro. You
37#   need not follow the terms of the GNU General Public License when using
38#   or distributing such scripts, even though portions of the text of the
39#   Macro appear in them. The GNU General Public License (GPL) does govern
40#   all other use of the material that constitutes the Autoconf Macro.
41#
42#   This special exception to the GPL applies to versions of the Autoconf
43#   Macro released by the Autoconf Archive. When you make and distribute a
44#   modified version of the Autoconf Macro, you may extend this special
45#   exception to the GPL to apply to your modified version as well.
46
47#serial 11
48
49## Note, we have patch this macro compared to official macro as we've
50## moved down GCC in the list. This was motivated by the fact that
51## many compilers defined __GNUC__ and therefore the test for GCC have
52## many false positives and it is better to have that test as late as
53## possible.
54
55AC_DEFUN([AX_COMPILER_VENDOR],
56[AC_CACHE_CHECK([for _AC_LANG compiler vendor], ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor,
57  [# note: don't check for gcc first since some other compilers define __GNUC__
58  vendors="intel:     __ICC,__ECC,__INTEL_COMPILER
59           ibm:       __xlc__,__xlC__,__IBMC__,__IBMCPP__
60           pathscale: __PATHCC__,__PATHSCALE__
61           clang:     __clang__
62           sun:       __SUNPRO_C,__SUNPRO_CC
63           hp:        __HP_cc,__HP_aCC
64           dec:       __DECC,__DECCXX,__DECC_VER,__DECCXX_VER
65           borland:   __BORLANDC__,__TURBOC__
66           comeau:    __COMO__
67           cray:      _CRAYC
68           kai:       __KCC
69           lcc:       __LCC__
70           sgi:       __sgi,sgi
71           microsoft: _MSC_VER
72           metrowerks: __MWERKS__
73           watcom:    __WATCOMC__
74           portland:  __PGI
75           gnu:       __GNUC__
76           unknown:   UNKNOWN"
77  for ventest in $vendors; do
78    case $ventest in
79      *:) vendor=$ventest; continue ;;
80      *)  vencpp="defined("`echo $ventest | sed 's/,/) || defined(/g'`")" ;;
81    esac
82    AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,[
83      #if !($vencpp)
84        thisisanerror;
85      #endif
86    ])], [break])
87  done
88  ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor=`echo $vendor | cut -d: -f1`
89 ])
90])
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