1 files changed, 30 insertions, 9 deletions
diff --git a/Builder.cpp b/Builder.cpp
index 57f731e..e74809b 100644
--- a/Builder.cpp
+++ b/Builder.cpp
@@ -179,6 +179,16 @@ Builder::Builder(const pt::ptree& ptree, const std::string& target):
  // to prevent creation of .d files in clean()
 }
 
+// given a compiled compile unit (*.o), find its source file
+fs::path Builder::get_compile_unit_source_from_object(const fs::path& path) {
+ std::vector<fs::path> source_files{dependencies_of(path)};
+ auto it{std::find_if(source_files.begin(), source_files.end(), is_compile_unit_source_by_extension)};
+ if (it == source_files.end()) {
+  throw std::runtime_error(fmt::format("No source file found for {}", path.string()));
+ }
+ return *it;
+}
+
 std::vector<fs::path> Builder::dependencies_of(const fs::path& p) const
 {
  try {
@@ -197,10 +207,26 @@ std::vector<std::string> Builder::link_libs_of(const fs::path& p) const
  }
 }
 
-std::vector<fs::path> Builder::include_paths_of(const fs::path& p) const
+fs::path Builder::target_from_object(const fs::path& object) const
+{
+ for (const auto& target: _all_targets) {
+  const auto& deps{dependencies_of(target)};
+  auto it{std::find(deps.cbegin(), deps.cend(), object)};
+  if (it != deps.cend()) {
+   return target;
+  }
+ }
+
+ throw std::runtime_error("No target found which depends on object "s + object.string());
+}
+
+std::vector<fs::path> Builder::include_paths_of_object(const fs::path& object) const
 {
+ fs::path target{target_from_object(object)};
+
+ // include paths from target
  try {
-  return _include_paths.at(p);
+  return _include_paths.at(target);
  } catch (const std::out_of_range& ex) {
   return {}; // empty by default
  }
@@ -288,13 +314,8 @@ void Builder::build_file(const fs::path& p) {
 
  if (p.extension() == ".o") {
   // compile
-  std::vector<fs::path> source_files{dependencies_of(p)};
-  auto it{std::find_if(source_files.begin(), source_files.end(), is_compile_unit_source_by_extension)};
-  if (it == source_files.end()) {
-   throw std::runtime_error(fmt::format("No source file found for {}", p.string()));
-  }
-  //std::cout << "DEBUG: " << (*_include_paths.begin()).first  << " " << (*_include_paths.begin()).second.size() << " " << p.string() << std::endl;
-  command = _lang.getCompileCommand(p, *it, include_paths_of(p));
+  fs::path source_file{get_compile_unit_source_from_object(p)};
+  command = _lang.getCompileCommand(p, source_file, include_paths_of_object(p));
  } else {
   // link
   std::vector<fs::path> objects{dependencies_of(p)};