Fix version variable in reference manual PDF filename (#1363)

The variable SDF_VERSION_FULL is a C preprocessor macro which is set to
the value of the CMake variable PROJECT_VERSION_FULL in config.hh.in. It
is not defined as a CMake variable itself, and currently evaluates to an
empty string resulting in refman.pdf being renamed to sdf-.pdf.

Signed-off-by: Scott K Logan <[email protected]>

Author: cottsay

doc/CMakeLists.txt

@@ -15,7 +15,7 @@ if (DOXYGEN_FOUND)
             ${CMAKE_BINARY_DIR}/doxygen/html/search
     COMMAND make -C ${CMAKE_BINARY_DIR}/doxygen/latex
     COMMAND mv ${CMAKE_BINARY_DIR}/doxygen/latex/refman.pdf
-    ${CMAKE_BINARY_DIR}/doxygen/latex/sdf-${SDF_VERSION_FULL}.pdf
+    ${CMAKE_BINARY_DIR}/doxygen/latex/sdf-${PROJECT_VERSION_FULL}.pdf
 
     COMMENT "Generating API documentation with Doxygen" VERBATIM)
 endif()