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From: Jose Isaias Cabrera <jicman@outlook.com>
To: Tony Kelman <tony@kelman.net>, "cygwin@cygwin.com" <cygwin@cygwin.com>
Subject: Re: How to build a DLL without cygwin DLL dependencies
Date: Thu, 30 May 2019 02:51:28 +0000
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Tony Kelman, on Wednesday, May 29, 2019 04:18 PM, wrote...
>and you can avoid the issue by building a 64 bit dll, or in 32 bit via
>
>i686-w64-mingw32-gcc -shared -static-libgcc sqlite3.c -o sqlite3.dll
>

This is what I needed above. The command I was using,

i686-w64-mingw32-gcc -shared sqlite3.c -o sqlite3.dll

will create a DLL, but it will have dependencies on some cygwin libs.  This command,

i686-w64-mingw32-gcc -shared -static-libgcc sqlite3.c -o sqlite3.dll

creates a DLL with no dependencies.  So, the option -static-libgcc is what I needed.  Thanks.

To summarize, when creating SQLite3 DLL or building any SQLite3 tools with cygwin,
1. Download the i686-w65-mingw32-gcc compiler with the setup tools (the 64 bit)
2. Get the source from sqlite.org
3. untar source
4. cd to the source directory
5. run this command:
i686-w64-mingw32-gcc -shared -static-libgcc sqlite3.c -o sqlite3.dll

Thanks,

josé

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