$OpenBSD: patch-cmake_modules_csiro_cmake,v 1.3 2019/08/21 05:47:45 rsadowski Exp $
Index: cmake/modules/csiro.cmake
--- cmake/modules/csiro.cmake.orig
+++ cmake/modules/csiro.cmake
@@ -30,11 +30,11 @@ if(PL_HAVE_QHULL OR WITH_CSA)
   if(CMAKE_SYSTEM_PROCESSOR MATCHES "i[0-9]86" AND NOT CMAKE_C_COMPILER MATCHES "gcc")
     set(NAN_CFLAGS "${NAN_CFLAGS} -mieee-fp")
   elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "alpha.*")
-    if(CMAKE_C_COMPILER MATCHES "gcc")
+    if(CMAKE_COMPILER_IS_GNUCC)
       set(NAN_CFLAGS "${NAN_CFLAGS} -mieee")
-    else(CMAKE_C_COMPILER MATCHES "gcc")
+    else(CMAKE_COMPILER_IS_GNUCC)
       set(NAN_CFLAGS "${NAN_CFLAGS} -ieee")
-    endif(CMAKE_C_COMPILER MATCHES "gcc")
+    endif(CMAKE_COMPILER_IS_GNUCC)
   endif(CMAKE_SYSTEM_PROCESSOR MATCHES "i[0-9]86" AND NOT CMAKE_C_COMPILER MATCHES "gcc")
   if(NOT DEFINED NaNAwareCCompiler)
     message(STATUS "Check for NaN awareness in C compiler")
