XXX cmake function with arguments

Next: Create a output messages file, and a C include file.

TODO: Name the generated files buildinfo-include.c and buildinfo-messages.txt

CMakeLists.txt

@@ -368,8 +368,6 @@ endif()
 # Configuration
 # =====================================
 
-buildinfo_output()
-
 message(STATUS "Configuration summary:")
 message(STATUS "----------------------")
 
@@ -406,11 +404,14 @@ if (DEBUG_CMAKE)
     message(STATUS "----------------------")
 endif()
 
+buildinfo_item("libelf" "yes")
+buildinfo_item("libelf" "no")
+buildinfo_item("libelf" "DO HAVE")
+buildinfo_item("libelf" "DON'T HAVE")
+
+buildinfo_output()
+
 if(HAVE_LIBELF)
-    buildinfo_item("libelf", "yes")
-    buildinfo_item("libelf", "no")
-    buildinfo_item("libelf", "DO HAVE")
-    buildinfo_item("libelf", "DON'T HAVE")
     message(STATUS "DO HAVE    libelf")
 else()
     message(STATUS "DON'T HAVE libelf")

src/build-helpers/buildinfo.cmake

@@ -3,6 +3,13 @@ function(buildinfo_setup)
   message(STATUS "END buildinfo_setup")
 endfunction()
 
+function(buildinfo_item KEY VAL)
+  cmake_parse_arguments(arg "" "" "" ${ARGN})
+  message(STATUS "BEGIN buildinfo_item")
+  message(STATUS "  K,V: ${KEY}, ${VAL}")
+  message(STATUS "END buildinfo_item")
+endfunction()
+
 function(buildinfo_output)
   message(STATUS "BEGIN buildinfo_output")
   message(STATUS "END buildinfo_output")