add build_extra cmake option and update extra/CMakeLists.txt

CMakeLists.txt

@@ -38,6 +38,7 @@ set(BUILD_COMMENTS "stock build")
 option(BUILD_LIB "Build wgrib2 library?" on)
 option(BUILD_SHARED_LIB "Build shared library?" off)
 option(BUILD_WGRIB "Build wgrib code?" off)
+option(BUILD_EXTRA "Build user-contributed code" on)
 
 if (MAKE_FTN_API OR USE_IPOLATES)
   enable_language(Fortran)
@@ -140,6 +141,11 @@ message(STATUS "Writing config.h...")
 configure_file("${PROJECT_SOURCE_DIR}/wgrib2/config.h.in" "${CMAKE_CURRENT_BINARY_DIR}/config.h")
 include_directories(${CMAKE_CURRENT_BINARY_DIR})
 
+message(STATUS "Checking if the user wants to use user-contributed code...")
+if (BUILD_EXTRA)
+add_subdirectory(extra)
+endif()
+
 message(STATUS "Adding wgrib2, aux_probs subdirectories...")
 add_subdirectory(wgrib2)
 add_subdirectory(aux_progs)

extra/CMakeLists.txt

@@ -1 +1,5 @@
-set(extra_src Mysql.c Mysql_dump.c Mysql_speed.c)
+set(extra_src Mysql.c Mysql_dump.c Mysql_speed.c)
+
+add_library(extra OBJECT ${extra_src})
+
+install(TARGETS extra RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})

wgrib2/config.h.in

@@ -27,6 +27,7 @@
 #cmakedefine BUILD_LIB
 #cmakedefine BUILD_SHARED_LIB
 #cmakedefine BUILD_WGRIB
+#cmakedefine BUILD_EXTRA
 #cmakedefine TEST_FILE_DIR "@TEST_FILE_DIR@"
 
 #define BUILD_COMMENTS "@BUILD_COMMENTS@"