From 55ab1f564286c6f3e986bf68ebb271132a749c6f Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Thu, 15 Dec 2022 11:05:31 +0100
Subject: Add clang support.

---
 src/bootstrap.cc |  7 +++++++
 src/configure.cc | 23 +++++++++++++++++++++++
 src/rebuild.h    |  2 --
 src/task.h       |  1 +
 src/tasks.h      |  4 ++--
 src/unittest.h   |  2 +-
 6 files changed, 34 insertions(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/bootstrap.cc b/src/bootstrap.cc
index 9079092..c58c399 100644
--- a/src/bootstrap.cc
+++ b/src/bootstrap.cc
@@ -3,6 +3,7 @@
 // See accompanying file LICENSE for details.
 #include <iostream>
 #include <array>
+#include <cstdlib>
 
 #define BOOTSTRAP
 
@@ -35,6 +36,12 @@ bool hasConfiguration(const std::string& key)
 const std::string& getConfiguration(const std::string& key,
                                     const std::string& defaultValue)
 {
+	if(key == cfg::host_cxx && std::getenv("CXX"))
+	{
+		static std::string s = std::getenv("CXX");
+		return s;
+	}
+
 	return defaultValue;
 }
 
diff --git a/src/configure.cc b/src/configure.cc
index 86538ab..50a7c32 100644
--- a/src/configure.cc
+++ b/src/configure.cc
@@ -32,6 +32,7 @@ namespace ctor
 {
 std::optional<std::string> includedir;
 std::optional<std::string> libdir;
+std::map<std::string, std::string> conf_values;
 }
 
 bool hasConfiguration(const std::string& key)
@@ -46,6 +47,11 @@ bool hasConfiguration(const std::string& key)
 		return true;
 	}
 
+	if(ctor::conf_values.find(key) != ctor::conf_values.end())
+	{
+		return true;
+	}
+
 	const auto& c = configuration();
 	return c.tools.find(key) != c.tools.end();
 }
@@ -63,6 +69,11 @@ const std::string& getConfiguration(const std::string& key,
 		return *ctor::libdir;
 	}
 
+	if(ctor::conf_values.find(key) != ctor::conf_values.end())
+	{
+		return ctor::conf_values[key];
+	}
+
 	const auto& c = configuration();
 	if(hasConfiguration(key))
 	{
@@ -376,6 +387,18 @@ int regenerateCache(const Settings& default_settings,
 	std::string build_ar = locate(build_arch, ar_prog);
 	std::string build_ld = locate(build_arch, ld_prog);
 
+	// Store current values for execution in this execution context.
+	if(!ctor_includedir.empty())
+	{
+		ctor::conf_values[cfg::ctor_includedir] = ctor_includedir;
+	}
+	if(!ctor_libdir.empty())
+	{
+		ctor::conf_values[cfg::ctor_libdir] = ctor_libdir;
+	}
+	ctor::conf_values[cfg::host_cxx] = host_cxx;
+	ctor::conf_values[cfg::build_cxx] = build_cxx;
+
 	std::cout << "Writing results to: " << configurationFile.string() << "\n";
 	{
 		std::ofstream istr(configurationFile);
diff --git a/src/rebuild.h b/src/rebuild.h
index afa2307..284aeb2 100644
--- a/src/rebuild.h
+++ b/src/rebuild.h
@@ -8,8 +8,6 @@
 
 #include "ctor.h"
 
-class Settings;
-
 struct BuildConfigurationEntry
 {
 	const char* file;
diff --git a/src/task.h b/src/task.h
index e192555..4efbfff 100644
--- a/src/task.h
+++ b/src/task.h
@@ -28,6 +28,7 @@ class Task
 public:
 	Task(const BuildConfiguration& config, const Settings& settings,
 	     const std::string& sourceDir);
+	virtual ~Task() = default;
 
 	int registerDepTasks(const std::set<std::shared_ptr<Task>>& tasks);
 	virtual int registerDepTasksInner(const std::set<std::shared_ptr<Task>>& tasks) { return 0; }
diff --git a/src/tasks.h b/src/tasks.h
index c547432..403a954 100644
--- a/src/tasks.h
+++ b/src/tasks.h
@@ -10,8 +10,8 @@
 
 #include "task.h"
 
-class BuildConfiguration;
-class Settings;
+struct BuildConfiguration;
+struct Settings;
 
 struct Target
 {
diff --git a/src/unittest.h b/src/unittest.h
index 8dee33c..5118689 100644
--- a/src/unittest.h
+++ b/src/unittest.h
@@ -7,7 +7,7 @@
 #include <memory>
 
 class Task;
-class Settings;
+struct Settings;
 
 int runUnitTests(std::set<std::shared_ptr<Task>>& tasks,
                  const Settings& settings);
-- 
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