Expose library version, move it out of options (#588)

* slight cleanup

* Use -D defines for versions

* Undo FIROptionsTest change

* Drop failed macro attempt

* Add correct version to podspec

* Add newline

* Shuffle files around

* Bring back log change

* Fix change

* Fix space

1 files changed, 39 insertions, 0 deletions

diff --git a/Firebase/Core/FIRVersion.m b/Firebase/Core/FIRVersion.m
new file mode 100644
index 0000000..8186683
--- /dev/null
+++ b/Firebase/Core/FIRVersion.m
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+
+#ifndef Firebase_VERSION
+#error "Firebase_VERSION is not defined: add -DFirebase_VERSION=... to the build invocation"
+#endif
+
+#ifndef FIRCore_VERSION
+#error "FIRCore_VERSION is not defined: add -DFIRCore_VERSION=... to the build invocation"
+#endif
+
+
+// The following two macros supply the incantation so that the C
+// preprocessor does not try to parse the version as a floating
+// point number. See
+// https://www.guyrutenberg.com/2008/12/20/expanding-macros-into-string-constants-in-c/
+#define STR(x) STR_EXPAND(x)
+#define STR_EXPAND(x) #x
+
+const unsigned char *const FirebaseVersionString =
+        (const unsigned char *const)STR(Firebase_VERSION);
+
+const unsigned char *const FirebaseCoreVersionString =
+        (const unsigned char *const)STR(FIRCore_VERSION);