Include dependency licences in distribution bundle (#113)

Author: kyllingstad

conanfile.py

@@ -45,8 +45,10 @@ def generate(self):
                 "boost_thread*"],
             "thrift": ["thrift", "thriftd"],
         }
-        for req, dep in self.dependencies.items():
-            self._import_dynamic_libs(dep, dldir, dependency_libs.get(req.ref.name, ["*"]))
+        licensedir = os.path.join(self.build_folder, "dist", "doc", "licenses")
+        for dep in self.dependencies.host.values():
+            self._import_dynamic_libs(dep, dldir, dependency_libs.get(dep.ref.name, ["*"]))
+            self._import_license(dep, licensedir)
         if self.dependencies["libcosim"].options.proxyfmu:
             self._import_executables(self.dependencies["proxyfmu"], bindir, ["*"])
 
@@ -74,6 +76,22 @@ def _import_executables(self, dependency, target_dir, patterns=["*"]):
                 files = copy(self, patternx, bindir, target_dir, keep_path=False)
                 self._update_rpath(files, "$ORIGIN/../lib")
 
+    def _import_license(self, dependency, licenses_dir):
+        src_licenses_dir = os.path.join(dependency.package_folder, "licenses")
+        tgt_licenses_dir = os.path.join(licenses_dir, dependency.ref.name)
+        if os.path.isdir(src_licenses_dir):
+            # Copy the full contents of '<package_dir>/licenses/' if it exists,
+            # which it does for virtually all conan-center packages.
+            copy(self, "*", src_licenses_dir, tgt_licenses_dir)
+        else:
+            # Copy everything that looks like it might contain license and
+            # copyright information.
+            copy(self, "*licen?e*", dependency.package_folder, tgt_licenses_dir, keep_path=False)
+            copy(self, "*copying*", dependency.package_folder, tgt_licenses_dir, keep_path=False)
+            copy(self, "*notice*", dependency.package_folder, tgt_licenses_dir, keep_path=False)
+            copy(self, "*authors*", dependency.package_folder, tgt_licenses_dir, keep_path=False)
+            copy(self, "*copyright*", dependency.package_folder, tgt_licenses_dir, keep_path=False)
+
     def _update_rpath(self, files, new_rpath):
         if files and self.settings.os == "Linux":
             with VirtualBuildEnv(self).environment().vars(self).apply():