module which can create git_info.h at build time

modules/git_info/git_info.cmake

@@ -0,0 +1,17 @@
+#.rst:
+#
+# Creates git_info.h in the build directory.
+# This file can be included in sources to print
+# Git repository version and status information
+# to the program output.
+
+add_custom_command(
+    OUTPUT ${PROJECT_BINARY_DIR}/git_info.h
+    COMMAND ${CMAKE_COMMAND} -D_target_dir=${PROJECT_BINARY_DIR} -P git_info_sub.cmake
+    WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
+    )
+
+add_custom_target(
+    check
+    ALL DEPENDS ${PROJECT_BINARY_DIR}/git_info.h
+    )