From 33a1d727d5aafeaa0d9e729119d7d43ea9fcb370 Mon Sep 17 00:00:00 2001
From: Gregor Jasny <gjasny@googlemail.com>
Date: Sat, 18 Feb 2017 20:12:27 +0100
Subject: [PATCH] Makefile: Allow adding post-build rules to object libraries

---
 Source/cmGlobalXCodeGenerator.cxx |  3 ++-
 Source/cmMakefile.cxx             |  6 ++++--
 Source/cmMakefile.h               | 10 +++++++++-
 3 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/Source/cmGlobalXCodeGenerator.cxx b/Source/cmGlobalXCodeGenerator.cxx
index 8627cf2820..5029a947a4 100644
--- a/Source/cmGlobalXCodeGenerator.cxx
+++ b/Source/cmGlobalXCodeGenerator.cxx
@@ -489,7 +489,8 @@ void cmGlobalXCodeGenerator::AddExtraTargets(
         std::vector<std::string> no_byproducts;
         lg->GetMakefile()->AddCustomCommandToTarget(
           target->GetName(), no_byproducts, no_depends, commandLines,
-          cmTarget::POST_BUILD, "Depend check for xcode", dir.c_str());
+          cmTarget::POST_BUILD, "Depend check for xcode", dir.c_str(), true,
+          false, "", false, cmMakefile::AcceptObjectLibraryCommands);
       }
 
       if (target->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index bdaca9713a..7f9e6ef18a 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -684,7 +684,8 @@ void cmMakefile::AddCustomCommandToTarget(
   const std::vector<std::string>& depends,
   const cmCustomCommandLines& commandLines, cmTarget::CustomCommandType type,
   const char* comment, const char* workingDir, bool escapeOldStyle,
-  bool uses_terminal, const std::string& depfile, bool command_expand_lists)
+  bool uses_terminal, const std::string& depfile, bool command_expand_lists,
+  ObjectLibraryCommands objLibraryCommands)
 {
   // Find the target to which to add the custom command.
   cmTargets::iterator ti = this->Targets.find(target);
@@ -724,7 +725,8 @@ void cmMakefile::AddCustomCommandToTarget(
     return;
   }
 
-  if (ti->second.GetType() == cmStateEnums::OBJECT_LIBRARY) {
+  if (objLibraryCommands == RejectObjectLibraryCommands &&
+      ti->second.GetType() == cmStateEnums::OBJECT_LIBRARY) {
     std::ostringstream e;
     e << "Target \"" << target
       << "\" is an OBJECT library "
diff --git a/Source/cmMakefile.h b/Source/cmMakefile.h
index 9d9e90a76f..4d5ce98842 100644
--- a/Source/cmMakefile.h
+++ b/Source/cmMakefile.h
@@ -119,6 +119,13 @@ public:
    */
   void FinalPass();
 
+  /** How to handle custom commands for object libraries */
+  enum ObjectLibraryCommands
+  {
+    RejectObjectLibraryCommands,
+    AcceptObjectLibraryCommands
+  };
+
   /** Add a custom command to the build.  */
   void AddCustomCommandToTarget(
     const std::string& target, const std::vector<std::string>& byproducts,
@@ -126,7 +133,8 @@ public:
     const cmCustomCommandLines& commandLines, cmTarget::CustomCommandType type,
     const char* comment, const char* workingDir, bool escapeOldStyle = true,
     bool uses_terminal = false, const std::string& depfile = "",
-    bool command_expand_lists = false);
+    bool command_expand_lists = false,
+    ObjectLibraryCommands objLibraryCommands = RejectObjectLibraryCommands);
   cmSourceFile* AddCustomCommandToOutput(
     const std::vector<std::string>& outputs,
     const std::vector<std::string>& byproducts,