1# ===========================================================================
2#           http://autoconf-archive.cryp.to/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# LAST MODIFICATION
17#
18#   2008-04-12
19#
20# COPYLEFT
21#
22#   Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
23#   Copyright (c) 2008 Matteo Frigo
24#
25#   This program is free software: you can redistribute it and/or modify it
26#   under the terms of the GNU General Public License as published by the
27#   Free Software Foundation, either version 3 of the License, or (at your
28#   option) any later version.
29#
30#   This program is distributed in the hope that it will be useful, but
31#   WITHOUT ANY WARRANTY; without even the implied warranty of
32#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
33#   Public License for more details.
34#
35#   You should have received a copy of the GNU General Public License along
36#   with this program. If not, see <http://www.gnu.org/licenses/>.
37#
38#   As a special exception, the respective Autoconf Macro's copyright owner
39#   gives unlimited permission to copy, distribute and modify the configure
40#   scripts that are the output of Autoconf when processing the Macro. You
41#   need not follow the terms of the GNU General Public License when using
42#   or distributing such scripts, even though portions of the text of the
43#   Macro appear in them. The GNU General Public License (GPL) does govern
44#   all other use of the material that constitutes the Autoconf Macro.
45#
46#   This special exception to the GPL applies to versions of the Autoconf
47#   Macro released by the Autoconf Macro Archive. When you make and
48#   distribute a modified version of the Autoconf Macro, you may extend this
49#   special exception to the GPL to apply to your modified version as well.
50
51AC_DEFUN([AX_COMPILER_VENDOR],
52[
53AC_CACHE_CHECK([for _AC_LANG compiler vendor], ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor,
54 [ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor=unknown
55  # note: don't check for gcc first since some other compilers define __GNUC__
56  for ventest in clang:__clang__ intel:__ICC,__ECC,__INTEL_COMPILER ibm:__xlc__,__xlC__,__IBMC__,__IBMCPP__ pathscale:__PATHCC__,__PATHSCALE__ 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
57    vencpp="defined("`echo $ventest | cut -d: -f2 | sed 's/,/) || defined(/g'`")"
58    AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,[
59#if !($vencpp)
60      thisisanerror;
61#endif
62])], [ax_cv_]_AC_LANG_ABBREV[_compiler_vendor=`echo $ventest | cut -d: -f1`; break])
63  done
64 ])
65])
66