conanfile changes - use version based on git if not set; esrure pack…

conanfile.py

@@ -2,7 +2,7 @@
 
 from conan import ConanFile
 from conan.tools.cmake import cmake_layout, CMake, CMakeToolchain
-from conan.tools.files import copy
+from conan.tools.files import copy,save,load
 from conan.tools.scm import Git
 
 required_conan_version = ">=2.12.2"
@@ -38,7 +38,16 @@ class ForestdbConan(ConanFile):
         "build_tests": False
     }
 
-    exports_sources = "CMakeLists.txt", "src/*", "include/*", "cmake/*", "tools/*", "LICENSE"
+    exports_sources = "CMakeLists.txt", "src/*", "include/*", "cmake/*", "tools/*", "option/*", "utils/*", "LICENSE"
+
+    def set_version(self):
+        if self.version:
+            return
+
+        git = Git(self, folder=self.recipe_folder)
+        self.version = git.run(cmd="describe --tags --long")
+        if self.version.startswith("v"):
+            self.version = self.version[1:]
 
     def requirements(self):
         if self.options.with_snappy:
@@ -47,12 +56,27 @@ def requirements(self):
         if self.options.with_jemalloc:
             self.requires("jemalloc/[*]")
 
+    def _computeCommitHash(self):
+        hash_file = os.path.join(self.recipe_folder, "COMMIT_HASH")
+        if (os.path.exists(hash_file)):
+            hash = load(self,path=hash_file)
+            self.output.info(f"Fetched commit hash from {hash_file}")
+        else: # we are building from local source, i.e. in editable mode
+            git = Git(self, folder=self.recipe_folder)
+            hash = git.get_commit()
+            diff = git.run(cmd="diff --stat")
+            if diff:
+                hash +="-dirty"
+            self.output.info(f"Fetched commit hash {hash} from local Git in {self.recipe_folder}")
+        return hash
+
+    def export(self):
+        save(self, path=os.path.join(self.export_folder, "COMMIT_HASH"), content=self._computeCommitHash())
+
     def layout(self):
         cmake_layout(self, generator="CMakeDeps")
         self.cpp.package.libs = [f"lib{self.name}.so" if self.options.shared else f"lib{self.name}.a"]
-
-        hash = Git(self).get_commit()
-        self.cpp.package.defines = self.cpp.build.defines = ["_FDB_COMMIT_HASH=%s" % hash]
+        self.cpp.package.defines = self.cpp.build.defines = ["_FDB_COMMIT_HASH=%s" % self._computeCommitHash()]
 
     def generate(self):
         tc = CMakeToolchain(self)
@@ -79,7 +103,3 @@ def package(self):
         cmake.install()
         assert copy(self, "LICENSE", src=self.source_folder, dst=os.path.join(self.package_folder, "licenses")), "Copy failed"
 
-    def package_info(self):
-        self.cpp_info.system_libs.extend(["pthread", "m", "dl"])
-        if self.settings.os == "Linux":
-            self.cpp_info.system_libs.extend(["rt"])