From f09ac0eb6cfcf39edab82ba2e206d15cb07058e9 Mon Sep 17 00:00:00 2001
From: Milian Wolff <milian.wolff@kdab.com>
Date: Thu, 30 Apr 2015 13:26:27 +0200
Subject: [PATCH] Stay backwards compatible to old Boost 1.41 for RHEL 6
 compatibility.

---
 CMakeLists.txt      |  2 +-
 heaptrack_print.cpp | 10 +++++++++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3cd9666..b0dbbdf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@ SET(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
 
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -Wpedantic")
 
-find_package(Boost 1.45.0 REQUIRED COMPONENTS iostreams program_options)
+find_package(Boost 1.41.0 REQUIRED COMPONENTS iostreams program_options)
 find_package(Threads REQUIRED)
 
 add_subdirectory(3rdparty)
diff --git a/heaptrack_print.cpp b/heaptrack_print.cpp
index 3b252ad..3dc5fb4 100644
--- a/heaptrack_print.cpp
+++ b/heaptrack_print.cpp
@@ -840,7 +840,7 @@ int main(int argc, char** argv)
 {
     po::options_description desc("Options");
     desc.add_options()
-        ("file,f", po::value<string>()->required(),
+        ("file,f", po::value<string>(),
             "The heaptrack data file to print.")
         ("shorten-templates,t", po::value<bool>()->default_value(true)->implicit_value(true),
             "Shorten template identifiers.")
@@ -891,6 +891,14 @@ int main(int argc, char** argv)
         return 1;
     }
 
+    if (!vm.count("file")) {
+        // NOTE: stay backwards compatible to old boost 1.41 available in RHEL 6
+        //       otherwise, we could simplify this by setting the file option
+        //       as ->required() using the new 1.42 boost API
+        cerr << "ERROR: the option '--file' is required but missing\n\n" << desc << endl;
+        return 1;
+    }
+
     AccumulatedTraceData data;
 
     const auto inputFile = vm["file"].as<string>();
-- 
2.7.4