Add Conan recipe for header-only package

prj/conan/conanfile.py

@@ -0,0 +1,68 @@
+import os
+
+from conan import ConanFile
+from conan.errors import ConanException
+from conan.tools.files import copy, load, save
+from conan.tools.scm import Git
+
+
+class CplConan(ConanFile):
+    name = "cpl"
+    license = "MIT"
+    author = "Ermig1979"
+    url = "https://github.com/ermig1979/Cpl"
+    description = "Common Purpose Library — header-only C++ utility library"
+    topics = ("header-only", "utility", "c++")
+    package_type = "header-library"
+    settings = "os", "compiler", "build_type", "arch"
+    no_copy_source = True
+
+    def _repo_root(self):
+        return os.path.normpath(os.path.join(self.recipe_folder, "..", ".."))
+
+    def set_version(self):
+        # In cache — read from file saved during export()
+        version_file = os.path.join(self.recipe_folder, "version.txt")
+        if os.path.exists(version_file):
+            self.version = load(self, version_file).strip()
+            return
+
+        # In local flow — read from git tag
+        try:
+            git = Git(self, folder=self._repo_root())
+            tag = git.run("describe --tags --abbrev=0").strip().lstrip("v")
+        except ConanException:
+            raise ConanException(
+                "No git tags found. Create a version tag first:\n"
+                "  git tag v1.0.0\n"
+                "If tags exist on remote, fetch them:\n"
+                "  git fetch --tags"
+            )
+        if not tag:
+            raise ConanException(
+                "No git tags found. Create a version tag first:\n"
+                "  git tag v1.0.0\n"
+                "If tags exist on remote, fetch them:\n"
+                "  git fetch --tags"
+            )
+        self.version = tag
+
+    def export(self):
+        save(self, os.path.join(self.export_folder, "version.txt"), self.version)
+
+    def export_sources(self):
+        root = self._repo_root()
+        copy(self, "*.h", src=os.path.join(root, "src", "Cpl"), dst=os.path.join(self.export_sources_folder, "src", "Cpl"))
+
+    def package(self):
+        copy(
+            self, "*.h",
+            src=os.path.join(self.source_folder, "src", "Cpl"),
+            dst=os.path.join(self.package_folder, "include", "Cpl"),
+        )
+
+    def package_info(self):
+        self.cpp_info.bindirs = []
+        self.cpp_info.libdirs = []
+        if self.settings.os in ("Linux", "FreeBSD"):
+            self.cpp_info.system_libs.extend(["pthread", "stdc++fs"])