From 60f4725115653919e9179ad5f01359568e145047 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Thu, 7 Oct 2010 21:02:41 +0200
Subject: Nice dependencies for behaviours

---
 ErlangTarget.cmake | 83 ++++++++++++++++++++++++++++++++++++++----------------
 1 file changed, 58 insertions(+), 25 deletions(-)

diff --git a/ErlangTarget.cmake b/ErlangTarget.cmake
index 5562d86..305ee2c 100644
--- a/ErlangTarget.cmake
+++ b/ErlangTarget.cmake
@@ -10,35 +10,68 @@ macro(erl_target name)
     list(APPEND headers "${CMAKE_CURRENT_SOURCE_DIR}/${header}")
   endforeach(header ${ARGS_HEADERS})
 
-  set(before "")
+  set(deps "")
+  set(current "")
+  set(uses false)
 
   foreach(src ${ARGS_DEFAULT_ARGS})
-    if(src STREQUAL "BEFORE")
-      set(before ${out_files})
-    else(src STREQUAL "BEFORE")
-      set(in_file "${CMAKE_CURRENT_SOURCE_DIR}/${src}")
-      string(REPLACE ".erl" ".beam" src ${src})
-      set(out_file "${CMAKE_CURRENT_BINARY_DIR}/${src}")
-
-      add_custom_command(
-	OUTPUT
-          ${out_file}
-	COMMAND
-          ${ERLC_EXECUTABLE}
-          "-o" ${CMAKE_CURRENT_BINARY_DIR}
-	  "-pz" ${CMAKE_CURRENT_BINARY_DIR}
-          ${ARGS_OPTIONS}
-          ${in_file}
-	DEPENDS
-          ${in_file}
-          ${headers}
-	  ${before}
-	)
-
-      list(APPEND out_files "${CMAKE_CURRENT_BINARY_DIR}/${src}")
-    endif(src STREQUAL "BEFORE")
+    if(src STREQUAL "USING")
+      set(uses true)
+    else(src STREQUAL "USING")
+      if(uses)
+	list(APPEND deps "${CMAKE_CURRENT_BINARY_DIR}/${src}.beam")
+	set(uses false)
+      else(uses)
+	if(current)
+	  set(in_file "${CMAKE_CURRENT_SOURCE_DIR}/${current}")
+	  string(REPLACE ".erl" ".beam" current ${current})
+	  set(out_file "${CMAKE_CURRENT_BINARY_DIR}/${current}")
+
+	  add_custom_command(
+	    OUTPUT
+              ${out_file}
+	    COMMAND
+              ${ERLC_EXECUTABLE}
+              "-o" ${CMAKE_CURRENT_BINARY_DIR}
+	      "-pz" ${CMAKE_CURRENT_BINARY_DIR}
+              ${ARGS_OPTIONS}
+              ${in_file}
+	    DEPENDS
+              ${in_file}
+              ${headers}
+	      ${deps}
+	    )
+
+	  list(APPEND out_files "${CMAKE_CURRENT_BINARY_DIR}/${current}")
+	endif(current)
+
+	set(current ${src})
+	set(deps "")
+      endif(uses)
+    endif(src STREQUAL "USING")
   endforeach(src ${ARGS_DEFAULT_ARGS})
 
+  set(in_file "${CMAKE_CURRENT_SOURCE_DIR}/${current}")
+  string(REPLACE ".erl" ".beam" current ${current})
+  set(out_file "${CMAKE_CURRENT_BINARY_DIR}/${current}")
+
+  add_custom_command(
+    OUTPUT
+      ${out_file}
+    COMMAND
+      ${ERLC_EXECUTABLE}
+      "-o" ${CMAKE_CURRENT_BINARY_DIR}
+      "-pz" ${CMAKE_CURRENT_BINARY_DIR}
+      ${ARGS_OPTIONS}
+      ${in_file}
+    DEPENDS
+      ${in_file}
+      ${headers}
+      ${deps}
+  )
+
+  list(APPEND out_files "${CMAKE_CURRENT_BINARY_DIR}/${current}")
+
   add_custom_target(
     ${name} ALL DEPENDS ${out_files}
   )
-- 
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