Update ax_compiler_vendor.m4

Use the newest version, as it includes clang support.

Signed-off-by: Tobias Grosser <tobias@grosser.es>
Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>

diff --git a/m4/ax_compiler_vendor.m4 b/m4/ax_compiler_vendor.m4
index b074260..3214706 100644 (file)
--- a/m4/ax_compiler_vendor.m4
+++ b/m4/ax_compiler_vendor.m4
@@ -1,5 +1,5 @@
 # ===========================================================================
-#       http://www.nongnu.org/autoconf-archive/ax_compiler_vendor.html
+#    http://www.gnu.org/software/autoconf-archive/ax_compiler_vendor.html
 # ===========================================================================
 #
 # SYNOPSIS
@@ -44,12 +44,14 @@
 #   modified version of the Autoconf Macro, you may extend this special
 #   exception to the GPL to apply to your modified version as well.
 
+#serial 9
+
 AC_DEFUN([AX_COMPILER_VENDOR],
 [
 AC_CACHE_CHECK([for _AC_LANG compiler vendor], ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor,
  [ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor=unknown
   # note: don't check for gcc first since some other compilers define __GNUC__
-  for ventest in 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
+  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
     vencpp="defined("`echo $ventest | cut -d: -f2 | sed 's/,/) || defined(/g'`")"
     AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,[
 #if !($vencpp)