comparison fft/fftw/fftw-3.3.4/m4/ax_compiler_vendor.m4 @ 19:26056e866c29

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+dnl @synopsis AX_COMPILER_VENDOR
+dnl @summary find the vendor (gnu, intel, etc.) of the C/C++ compiler
+dnl @category C
+dnl @category C++
+dnl
+dnl Determine the vendor of the C/C++ compiler, e.g., gnu, intel, ibm,
+dnl sun, hp, borland, comeau, dec, cray, kai, lcc, metrowerks, sgi, 
+dnl microsoft, watcom, etc.  The vendor is returned in the cache variable
+dnl $ax_cv_c_compiler_vendor for C and $ax_cv_cxx_compiler_vendor for C++.
+dnl
+dnl @version 2007-08-01
+dnl @license GPLWithACException
+dnl @author Steven G. Johnson <[e-mail]> with Matteo Frigo
+
+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 
+    vencpp="defined("`echo $ventest | cut -d: -f2 | sed 's/,/) || defined(/g'`")"
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,[
+#if !($vencpp)
+      thisisanerror;
+#endif
+])], [ax_cv_]_AC_LANG_ABBREV[_compiler_vendor=`echo $ventest | cut -d: -f1`; break])
+  done
+ ])
+])
+