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 9
48
49AC_DEFUN([AX_COMPILER_VENDOR],
50[
51AC_CACHE_CHECK([for _AC_LANG compiler vendor], ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor,
52 [ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor=unknown
53  # note: don't check for gcc first since some other compilers define __GNUC__
54  for ventest in intel:__ICC,__ECC,__INTEL_COMPILER ibm:__xlc__,__xlC__,__IBMC__,__IBMCPP__ pathscale:__PATHCC__,__PATHSCALE__ clang:__clang__ gnu:__GNUC__ sun:__SUNPRO_C,__SUNPRO_CC hp:__HP_cc,__HP_aCC dec:__DECC,__DECCXX,__DECC_VER,__DECCXX_VER borland:__BORLANDC__,__TURBOC__ comeau:__COMO__ cray:_CRAYC kai:__KCC lcc:__LCC__ metrowerks:__MWERKS__ sgi:__sgi,sgi microsoft:_MSC_VER watcom:__WATCOMC__ portland:__PGI; do
55    vencpp="defined("`echo $ventest | cut -d: -f2 | sed 's/,/) || defined(/g'`")"
56    AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,[
57#if !($vencpp)
58      thisisanerror;
59#endif
60])], [ax_cv_]_AC_LANG_ABBREV[_compiler_vendor=`echo $ventest | cut -d: -f1`; break])
61  done
62 ])
63])
64