[GNC-dev] Master: Cannot open or save to SQLite3 database

[John Ralls]

> On May 4, 2020, at 7:53 PM, Chris Good <goodchris96 at gmail.com> wrote:
> 
> -----Original Message-----
> From: John Ralls <jralls at ceridwen.us> 
> Sent: Tuesday, 5 May 2020 4:28 AM
> To: Chris Good <goodchris96 at gmail.com>
> Cc: gnucash-devel <gnucash-devel at gnucash.org>
> Subject: Re: [GNC-dev] Master: Cannot open or save to SQLite3 database
> 
> 
> 
>> On May 3, 2020, at 10:40 PM, Chris Good <goodchris96 at gmail.com> wrote:
>> 
>> Hi,
>> 
>> 
>> 
>> GnuCash master (as at 29 Apr 2020 fbf7171ab Fix libgnc-app-utils.dylib
>> install_name_dir.) on Ubuntu 18.04
>> 
>> 
>> 
>> I'm trying to open SQLite3 file 
>> del-account-cross-currencies-issue.gnucash
>> attached to bug 797220.
>> 
>> 
>> 
>> But when I try to open SQLite3 file. It says "no suitable backend was
> found"
>> and if I try to save an xml file, only xml format is available.
>> 
>> 
>> 
>> I have built with no options for turning off SQL ie
>> 
>> 
>> 
>> Src/CMakeLists.txt:                         WITH_SQL=ON
>> 
>> 
>> 
>> I have the following installed
>> 
>> libdbi-dev                           0.9.0-5
>> 
>> libdbi1                                 0.9.0-5
>> 
>> libdbi1-dbg                         0.9.0-5
>> 
>> libdbd-sqlite3                     0.9.0-5ubuntu2
>> 
>> 
>> 
>> When I try to debug, it seems to me:
>> 
>> 
>> 
>> In gnucash/libgnucash/backend/dbi/gnc-backend-dbi.cpp
>> gnc_module_init_backend_dbi()
>> 
>> I can see HAVE_LIBDBI_R is set
>> 
>> 
>> 
>> num_drivers = dbi_initialize_r (driver_dir, &dbi_instance);
>> 
>> 
>> 
>>              returns num_drivers=0 but dbi_instance is no longer null 
>> so the code exits before any drivers are registered.
>> 
>> 
>> 
>> Any suggestions please?
>> 
> 
> I just built from current master on my Ubuntu-18.04 VM and SQLite3 is an
> option in Save As...
> 
> If dpi_initialize_r returns 0 then that function (a libdbi one) didn't find
> any drivers to initialize. Make sure that GNC_DBD_DIR isn't set and in gdb
> at that dpi_initialize_r call check that driver_dir is 0.
> 
> Check that /usr/lib/x86_64-linux-gnu/dbd/lidbdsqlite3.so and
> /usr/lib/x86_64-linux-gnu/libsqlite3.so.0 is present.
> 
> Regards,
> John Ralls
> 
> Hi John,
> 
> GNC_DBD_DIR=/         is set in build/etc/gnucash/environment
> Commenting that out enables SQLite to work.
> 
> Here are the libraries:
> 
> /usr/lib/x86_64-linux-gnu/dbd/libdbdpgsql.la
> /usr/lib/x86_64-linux-gnu/dbd/libdbdsqlite3.so
> /usr/lib/x86_64-linux-gnu/dbd/libdbdmysql.la
> /usr/lib/x86_64-linux-gnu/dbd/libdbdpgsql.so
> /usr/lib/x86_64-linux-gnu/dbd/libdbdsqlite3.la
> /usr/lib/x86_64-linux-gnu/dbd/libdbdmysql.so
> 
> /usr/lib/x86_64-linux-gnu/libdbi.so.1.1.0
> /usr/lib/x86_64-linux-gnu/libdbi.a
> /usr/lib/x86_64-linux-gnu/libdbi.so.1
> /usr/lib/x86_64-linux-gnu/libdbi.so
> 
> cmake 3.10.2-1ubuntu2.18.04.1
> 
> I think the " GNC_DBD_DIR=/" line is added to environment file in
> src/gnucash/CMakeLists.txt :
> 
> 		  if (LIBDBI_LIBRARY AND LIBDBI_DRIVERS_DIR)
> 		    get_filename_component(libdir ${LIBDBI_LIBRARY}
> DIRECTORY)
> 		    string(FIND ${LIBDBI_DRIVERS_DIR} ${libdir} is_subdir)
> 		    if (NOT is_subdir EQUAL 0)
> 		      file(APPEND ${BUILD_ENV_FILE_OUT}
> "GNC_DBD_DIR=${LIBDBI_DRIVERS_DIR}")
> 		    endif()
> 		  endif()
> 
> Before I spend too much time trying to fix this, I am running the build
> environment from within eclipse. Is SQLite supported while running from the
> build or should I "ninja install" and run from there?

Chris,

It should run from the build directory. Misconfiguring GNC_DBD_DIR is the obvious problem and would break libdbi regardless of whether GnuCash is installed.

You found half of the LIBDBI_DRIVERS_DIR code; the other half is in the top-level CMakeLists.txt beginning at line 436 (in master):
find_library (LIBDBI_DRIVERS_DIR
  NAMES dbdmysql dbdpgsql dbdsqlite3 NAMES_PER_DIR
  PATH_SUFFIXES dbd libdbi-drivers/dbd
  HINTS LIBDBI_LIBRARY
  PATHS GNC_DBD_DIR
  DOC "Libdbi Drivers Directory")
If (WITH_SQL)
  if (NOT LIBDBI_INCLUDE_PATH)
    message (SEND_ERROR "Include file <dbi/dbi.h> was not found - did you install libdbi0-dev or libdbi-dev?")
  endif()
  if (NOT LIBDBI_LIBRARY)
    message (SEND_ERROR "Library libdbi was not found")
  endif()
  set(HAVE_DBI_DBI_H 1)
  if (NOT LIBDBI_DRIVERS_DIR)
    message (SEND_ERROR "No libdbi drivers found, SQL tests will fail.")
  else()
    get_filename_component(drivers_dir ${LIBDBI_DRIVERS_DIR} DIRECTORY)
    set(LIBDBI_DRIVERS_DIR ${drivers_dir} CACHE FILEPATH "Directory containing the libdbi driver modules." FORCE)
  endif()
endif()

Note that the "found" value of LIBDBI_DRIVERS_DIR gets overwritten in that last phrase so it might be helpful to insert
  message(INFO "find_library found drivers at $LIBDBI_DRIVERS_DIR")
just before the get_filename_component() call.

Regards,
John Ralls