Fix #54

Author: scheibel

CMakeLists.txt

@@ -60,7 +60,7 @@ set(META_VERSION_PATCH       "0")
 set(META_VERSION_REVISION    "${GIT_REV}")
 set(META_VERSION             "${META_VERSION_MAJOR}.${META_VERSION_MINOR}.${META_VERSION_PATCH}")
 set(META_NAME_VERSION        "${META_PROJECT_NAME} v${META_VERSION} (${META_VERSION_REVISION})")
-set(META_CMAKE_INIT_SHA      "${GIT_SHA1}")
+set(META_CMAKE_INIT_SHA      "${GIT_REV}")
 
 string(MAKE_C_IDENTIFIER ${META_PROJECT_NAME} META_PROJECT_ID)
 string(TOUPPER ${META_PROJECT_ID} META_PROJECT_ID)

cmake/GetGitRevisionDescription.cmake.in

@@ -14,6 +14,11 @@
 # http://www.boost.org/LICENSE_1_0.txt)
 
 set(HEAD_HASH)
+set(HEAD_REF)
+
+if (NOT EXISTS "@HEAD_FILE@")
+	return()
+endif()
 
 file(READ "@HEAD_FILE@" HEAD_CONTENTS LIMIT 1024)
 
@@ -23,7 +28,7 @@ if(HEAD_CONTENTS MATCHES "ref")
 	string(REPLACE "ref: " "" HEAD_REF "${HEAD_CONTENTS}")
 	if(EXISTS "@GIT_DIR@/${HEAD_REF}")
 		configure_file("@GIT_DIR@/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY)
-	else()
+	elseif(EXISTS "@GIT_DIR@/packed-refs")
 		configure_file("@GIT_DIR@/packed-refs" "@GIT_DATA@/packed-refs" COPYONLY)
 		file(READ "@GIT_DATA@/packed-refs" PACKED_REFS)
 		if(${PACKED_REFS} MATCHES "([0-9a-z]*) ${HEAD_REF}")
@@ -35,7 +40,7 @@ else()
 	configure_file("@GIT_DIR@/HEAD" "@GIT_DATA@/head-ref" COPYONLY)
 endif()
 
-if(NOT HEAD_HASH)
+if(NOT HEAD_HASH AND EXISTS "@GIT_DATA@/head-ref")
 	file(READ "@GIT_DATA@/head-ref" HEAD_HASH LIMIT 1024)
 	string(STRIP "${HEAD_HASH}" HEAD_HASH)
 endif()