TCC: allow builds from git

TCC/conanfile.py

@@ -3,7 +3,8 @@ import os
 
 class TccConan(ConanFile):
     name = "tcc"
-    version = "0.9.27"
+    revision = "62c30a4a"
+    version = "0.9.27+%s" % revision if revision else "0.9.27"
     license = "GNU Lesser General Public License"
     author = "Eyck Jentzsch <eyck@minres.com>"
     url = "https://github.com/Minres/conan-recipes/tree/master/TCC"
@@ -11,13 +12,20 @@ class TccConan(ConanFile):
     topics = ("compiler", "c")
     settings = "os", "compiler", "build_type", "arch"
     default_options = {}
-
     source_tar = "http://download.savannah.gnu.org/releases/tinycc/tcc-%s.tar.bz2" % version
+    git_repo = "git://repo.or.cz/tinycc.git"
     #generators = "cmake"
     sub_folder = "tcc-%s" % version
     exports_sources = "tcc-%s/*" % version
 
     def source(self):
+        if self.revsion:
+            git = tools.Git(folder=self.sub_folder)
+            if not os.path.exists(self.sub_folder):
+                git.clone(self.git_repo)
+                git.pull()
+                git.checkout(self.revision)
+        else:
             self.output.info("Downloading %s" %self.source_tar)
             tools.download(self.source_tar, "tcc.tar.bz2")
             tools.unzip("tcc.tar.bz2")