diff --git a/cmake/modules/GetGitRevisionDescription.cmake b/cmake/modules/GetGitRevisionDescription.cmake
--- a/cmake/modules/GetGitRevisionDescription.cmake
+++ b/cmake/modules/GetGitRevisionDescription.cmake
@@ -53,12 +53,16 @@
 		endif()
 		set(GIT_DIR "${GIT_PARENT_DIR}/.git")
 	endwhile()
-	# check if this is a submodule
+	# check if this is a linked working tree (e.g. submodule or git-worktree)
 	if(NOT IS_DIRECTORY ${GIT_DIR})
-		file(READ ${GIT_DIR} submodule)
-		string(REGEX REPLACE "gitdir: (.*)\n$" "\\1" GIT_DIR_RELATIVE ${submodule})
-		get_filename_component(SUBMODULE_DIR ${GIT_DIR} PATH)
-		get_filename_component(GIT_DIR ${SUBMODULE_DIR}/${GIT_DIR_RELATIVE} ABSOLUTE)
+		file(READ ${GIT_DIR} gitdirfile)
+		string(REGEX REPLACE "gitdir: (.*)\n$" "\\1" GIT_DIR_PATH ${gitdirfile})
+		if(IS_ABSOLUTE ${GIT_DIR_PATH})
+			get_filename_component(GIT_DIR ${GIT_DIR_PATH} ABSOLUTE)
+		else()
+			get_filename_component(LINKED_DIR ${GIT_DIR} PATH)
+			get_filename_component(GIT_DIR ${LINKED_DIR}/${GIT_DIR_PATH} ABSOLUTE)
+		endif()
 	endif()
 	set(GIT_DATA "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/git-data")
 	if(NOT EXISTS "${GIT_DATA}")
diff --git a/cmake/modules/GetGitRevisionDescription.cmake.in b/cmake/modules/GetGitRevisionDescription.cmake.in
--- a/cmake/modules/GetGitRevisionDescription.cmake.in
+++ b/cmake/modules/GetGitRevisionDescription.cmake.in
@@ -18,18 +18,30 @@
 file(READ "@HEAD_FILE@" HEAD_CONTENTS LIMIT 1024)
 
 string(STRIP "${HEAD_CONTENTS}" HEAD_CONTENTS)
+set(GIT_DIR "@GIT_DIR@")
+# handle git-worktree
+if(EXISTS "${GIT_DIR}/commondir")
+	file(READ "${GIT_DIR}/commondir" GIT_DIR_NEW LIMIT 1024)
+	string(STRIP "${GIT_DIR_NEW}" GIT_DIR_NEW)
+	if(NOT IS_ABSOLUTE "${GIT_DIR_NEW}")
+		get_filename_component(GIT_DIR_NEW ${GIT_DIR}/${GIT_DIR_NEW} ABSOLUTE)
+	endif()
+	if(EXISTS "${GIT_DIR_NEW}")
+		set(GIT_DIR "${GIT_DIR_NEW}")
+	endif()
+endif()
 if(HEAD_CONTENTS MATCHES "ref")
 	# named branch
 	string(REPLACE "ref: " "" HEAD_REF "${HEAD_CONTENTS}")
-	if(EXISTS "@GIT_DIR@/${HEAD_REF}")
-		configure_file("@GIT_DIR@/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY)
-	elseif(EXISTS "@GIT_DIR@/logs/${HEAD_REF}")
-		configure_file("@GIT_DIR@/logs/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY)
+	if(EXISTS "${GIT_DIR}/${HEAD_REF}")
+		configure_file("${GIT_DIR}/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY)
+	elseif(EXISTS "${GIT_DIR}/logs/${HEAD_REF}")
+		configure_file("${GIT_DIR}/logs/${HEAD_REF}" "@GIT_DATA@/head-ref" COPYONLY)
 		set(HEAD_HASH "${HEAD_REF}")
 	endif()
 else()
 	# detached HEAD
-	configure_file("@GIT_DIR@/HEAD" "@GIT_DATA@/head-ref" COPYONLY)
+	configure_file("${GIT_DIR}/HEAD" "@GIT_DATA@/head-ref" COPYONLY)
 endif()
 
 if(NOT HEAD_HASH)