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digitalmars.D.learn - embedding a library in Windows

reply Nestor <nestorperez2016 yopmail.com> writes:
Hi,

In Windows, is it possible embed a dll library into an 
application (in this particular case, sqlite3.dll)? Notice I 
don't mean storing the resource in the application to extract it 
at runtime, but rather to produce a static self-contained 
application.

If it's possible, please provide a brief howto.

Thanks in advance.
Jan 30 2017
next sibling parent reply Kagamin <spam here.lot> writes:
In general case the library can depend on it being a dll, then it 
can't be linked statically.
Jan 30 2017
parent reply Nestor <nestorperez2016 yopmail.com> writes:
On Monday, 30 January 2017 at 13:22:45 UTC, Kagamin wrote:

 In general case the library can depend on it being a dll, then 
 it can't be linked statically.


OK, and in case I have a sqlite3.a file, what parameters should I 
pass to dmd to build a static application?
Jan 30 2017
next sibling parent reply Adam D. Ruppe <destructionator gmail.com> writes:
On Monday, 30 January 2017 at 13:29:20 UTC, Nestor wrote:

 OK, and in case I have a sqlite3.a file


Just pass the sqlite3.a file instead of sqlite3.lib and the 
compiler should do the rest... worst case is you might need to 
edit the source of my sqlite.d to comment out the pragma(lib) 
line to explicitly deny the dependency, but I think it will just 
work with the .a since it will find the functions in there.
Jan 30 2017
parent reply Nestor <nestorperez2016 yopmail.com> writes:
On Monday, 30 January 2017 at 13:58:45 UTC, Adam D. Ruppe wrote:

 On Monday, 30 January 2017 at 13:29:20 UTC, Nestor wrote:

 OK, and in case I have a sqlite3.a file


 Just pass the sqlite3.a file instead of sqlite3.lib and the 
 compiler should do the rest... worst case is you might need to 
 edit the source of my sqlite.d to comment out the pragma(lib) 
 line to explicitly deny the dependency, but I think it will 
 just work with the .a since it will find the functions in there.


d:\prj\sqltest2\source>dmd app.d database.d sqlite.d sqlite3.a
Error: unrecognized file extension a

I took the file from 
http://math.seattleacademy.org/andersgibbons/fall17/node_modules/sq
ite3/build/Release/ so I am not 100% sure it's compatible (I don't know how to
build it myself), but in any case dmd doesn't recognize the extension.

If I delete the sqlite3.lib or remove the pragma from sqlite.d 
(or both), I get this instead:

d:\prj\sqltest2\source>dmd app.d database.d sqlite.d
OPTLINK (R) for Win32  Release 8.00.17
Copyright (C) Digital Mars 1989-2013  All rights reserved.
http://www.digitalmars.com/ctg/optlink.html
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_open
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_finalize
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_prepare_v2
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_free
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_mprintf
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_exec
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_last_insert_rowid
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_changes
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_errmsg
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_close
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_reset
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_column_blob
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_column_bytes
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_column_text
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_step
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_column_double
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_column_count
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_column_type
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_column_int
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_column_name
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_bind_blob
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_bind_null
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_bind_double
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_bind_int
app.obj(app)
  Error 42: Symbol Undefined _sqlite3_bind_text
Error: linker exited with status 214890840
Jan 30 2017
next sibling parent Kagamin <spam here.lot> writes:
That looks compiled for linux.
Jan 30 2017
prev sibling parent kinke <noone nowhere.com> writes:
You'll probably be more successful with a static .lib library 
generated with the MS compiler (Visual Studio). I'd suggest 
compiling sqlite yourself and then using DMD with the 
`-m32mscoff` switch (32-bit) or `-m64` for 64-bit. Google is your 
friend in case you don't know how to build a static C library.

Oh apparently sqlite is a single C module, in that case it's even 
easier. Just compile the .c file with the MS compiler (cl.exe 
sqlite3.c) and specify the resulting sqlite3.obj file on the DMD 
command line (with `-m32mscoff` or `-m64`), so that it's linked 
in.
Jan 30 2017
prev sibling parent Kagamin <spam here.lot> writes:
On Monday, 30 January 2017 at 13:29:20 UTC, Nestor wrote:

 OK, and in case I have a sqlite3.a file, what parameters should 
 I pass to dmd to build a static application?


If it's an import library, you will link against the dll 
dynamically (the library only contains bindings to dll). If it's 
a static library with sqlite code, you will link that code 
statically.
Jan 30 2017
prev sibling parent reply biozic <dransic gmail.com> writes:
On Monday, 30 January 2017 at 13:00:15 UTC, Nestor wrote:

 Hi,

 In Windows, is it possible embed a dll library into an 
 application (in this particular case, sqlite3.dll)? Notice I 
 don't mean storing the resource in the application to extract 
 it at runtime, but rather to produce a static self-contained 
 application.

 If it's possible, please provide a brief howto.

 Thanks in advance.


As an alternative, you could build an object file from Sqlite's 
source code (e.g. the amalgamation file from Sqlite's website) 
with a C compiler. Then you just build your D application with:

dmd app.d sqlite3.d sqlite3.o[bj]

No dll. Sqlite statically linked.

You could also try https://code.dlang.org/packages/d2sqlite3 with 
option "--all-included". This wasn't tested much though.
Jan 30 2017
next sibling parent biozic <dransic gmail.com> writes:
On Monday, 30 January 2017 at 16:40:47 UTC, biozic wrote:

 You could also try https://code.dlang.org/packages/d2sqlite3 
 with option "--all-included". This wasn't tested much though.


Sorry, this uses a dll on Windows.
Jan 30 2017
prev sibling parent reply Nestor <nestorperez2016 yopmail.com> writes:
On Monday, 30 January 2017 at 16:40:47 UTC, biozic wrote:

 As an alternative, you could build an object file from Sqlite's 
 source code (e.g. the amalgamation file from Sqlite's website) 
 with a C compiler. Then you just build your D application with:

 dmd app.d sqlite3.d sqlite3.o[bj]

 No dll. Sqlite statically linked.

 You could also try https://code.dlang.org/packages/d2sqlite3 
 with option "--all-included". This wasn't tested much though.


I tried to compile a static library with MinGW (which is the one 
I have at hand, v4.8.1) with this command:

gcc -static -c sqlite3.c

However:

D:\prj\sqltest2\source>dmd app.d database.d sqlite.d sqlite3.o
Error: unrecognized file extension o
Jan 30 2017
parent biozic <dransic gmail.com> writes:
On Monday, 30 January 2017 at 17:25:13 UTC, Nestor wrote:

 On Monday, 30 January 2017 at 16:40:47 UTC, biozic wrote:

 As an alternative, you could build an object file from 
 Sqlite's source code (e.g. the amalgamation file from Sqlite's 
 website) with a C compiler. Then you just build your D 
 application with:

 dmd app.d sqlite3.d sqlite3.o[bj]

 No dll. Sqlite statically linked.

 You could also try https://code.dlang.org/packages/d2sqlite3 
 with option "--all-included". This wasn't tested much though.


 I tried to compile a static library with MinGW (which is the 
 one I have at hand, v4.8.1) with this command:

 gcc -static -c sqlite3.c

 However:

 D:\prj\sqltest2\source>dmd app.d database.d sqlite.d sqlite3.o
 Error: unrecognized file extension o


Sorry, I never used Mingw32. It's either an incompatible object 
file format, or dmd only accepts .obj extensions, or both...

You could also use the dmc compiler 
(http://ftp.digitalmars.com/dmc.zip). Or see kinke's answer about 
using the MS compiler.
Jan 30 2017