From 23eee0d41ba0dcc88f568a7124538368688db1ce Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Sun, 13 Jun 2021 21:25:03 +0200
Subject: Add support for multiple build configurations.

---
 libcppbuild.cc | 128 +++++++++++++++++++++++++++++----------------------------
 1 file changed, 65 insertions(+), 63 deletions(-)

(limited to 'libcppbuild.cc')

diff --git a/libcppbuild.cc b/libcppbuild.cc
index c75f43e..bf1a7fa 100644
--- a/libcppbuild.cc
+++ b/libcppbuild.cc
@@ -30,62 +30,81 @@ int main(int argc, const char* argv[])
 	std::filesystem::path builddir(settings.builddir);
 	std::filesystem::create_directories(builddir);
 
-	auto config = configs();
-
-	std::vector<std::string> objects;
-	std::vector<std::unique_ptr<Task>> tasks;
-	for(const auto& file : config.sources)
+	auto build_configs = configs();
+	for(const auto& build_config : build_configs)
 	{
-		tasks.emplace_back(std::make_unique<TaskCC>(config, settings, file));
-		objects.push_back(tasks.back()->target());
-	}
+		std::vector<std::string> objects;
+		std::vector<std::unique_ptr<Task>> tasks;
+		for(const auto& file : build_config.sources)
+		{
+			tasks.emplace_back(std::make_unique<TaskCC>(build_config, settings, file));
+			objects.push_back(tasks.back()->target());
+		}
 
-	TaskLD task_ld(config, settings, config.target, objects);
+		TaskLD task_ld(build_config, settings, build_config.target, objects);
 
-	if(argc == 2 && std::string(argv[1]) == "clean")
-	{
-		std::cout << "Cleaning\n";
-		//std::filesystem::remove_all(builddir);
-		for(auto& task : tasks)
+		if(argc == 2 && std::string(argv[1]) == "clean")
 		{
-			if(task->clean() != 0)
+			std::cout << "Cleaning\n";
+			//std::filesystem::remove_all(builddir);
+			for(auto& task : tasks)
+			{
+				if(task->clean() != 0)
+				{
+					return 1;
+				}
+			}
+
+			if(task_ld.clean() != 0)
 			{
 				return 1;
 			}
-		}
 
-		if(task_ld.clean() != 0)
-		{
-			return 1;
+			return 0;
 		}
 
-		return 0;
-	}
-
-	std::cout << "Building\n";
+		std::cout << "Building\n";
 
-	std::list<std::future<int>> processes;
+		std::list<std::future<int>> processes;
 
-	// Start all tasks
-	auto task = tasks.begin();
-	while(task != tasks.end())
-	{
-		while(processes.size() < settings.parallel_processes &&
-		      task != tasks.end())
+		// Start all tasks
+		auto task = tasks.begin();
+		while(task != tasks.end())
 		{
-			if(!(*task)->dirty())
+			while(processes.size() < settings.parallel_processes &&
+			      task != tasks.end())
 			{
+				if(!(*task)->dirty())
+				{
+					++task;
+					continue;
+				}
+
+				processes.emplace_back(
+					std::async(std::launch::async,
+					           [&t = *task]()
+					           {
+						           return t->run();
+					           }));
 				++task;
-				continue;
+				std::this_thread::sleep_for(2ms);
+			}
+
+			for(auto process = processes.begin();
+			    process != processes.end();
+			    ++process)
+			{
+				if(process->valid())
+				{
+					if(process->get() != 0)
+					{
+						return 1;
+					}
+					processes.erase(process);
+					break;
+				}
 			}
 
-			processes.emplace_back(
-				std::async(std::launch::async,
-				           [&t = *task]()
-				           {
-					           return t->run();
-				           }));
-			++task;
 			std::this_thread::sleep_for(2ms);
 		}
 
@@ -93,37 +112,20 @@ int main(int argc, const char* argv[])
 		    process != processes.end();
 		    ++process)
 		{
-			if(process->valid())
+			process->wait();
+			auto ret = process->get();
+			if(ret != 0)
 			{
-				if(process->get() != 0)
-				{
-					return 1;
-				}
-				processes.erase(process);
-				break;
+				return 1;
 			}
 		}
 
-		std::this_thread::sleep_for(2ms);
-	}
-
-	for(auto process = processes.begin();
-	    process != processes.end();
-	    ++process)
-	{
-		process->wait();
-		auto ret = process->get();
-		if(ret != 0)
+		std::cout << "Linking\n";
+		if(task_ld.dirty())
 		{
-			return 1;
+			return task_ld.run();
 		}
 	}
 
-	std::cout << "Linking\n";
-	if(task_ld.dirty())
-	{
-		return task_ld.run();
-	}
-
 	return 0;
 }
-- 
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