CODEWITHSUNDEEP
csqlite
user8556057
user8556057

Reputation:

Unable to connect to SQLite in C program under Windows 10

Though there are a few earlier posts on this issue, I still can't find any right solution - any help is appriciated.

I followed this instruction and took the below steps for installation:

  1. Downloaded precompiled binaries for Windows (sqlite-dll-win32-x86-3240000.zip) form sqlite.org/download, and extracted to "C:\sqlite" folder
  2. Downloaded sqlite-shell-win32 (sqlite-tools-win32-x86-3240000.zip) form the same download page, and extracted to the same "C:\sqlite" folder. This folder now contains sqlite3.def, sqlite3.dll and sqlite3.exe files.
  3. Added "C:\sqlite" in my PATH environment variable and the sqlite3 command from my project folder "C:\proj" now works.

I then followed this instruction and to run the program:

Code (test.c) saved under "C:\proj" :

#include <stdio.h>
#include <sqlite3.h> 

int main(int argc, char* argv[]) {
   sqlite3 *db;
   char *zErrMsg = 0;
   int rc;

   rc = sqlite3_open("test.db", &db);

   if( rc ) {
      fprintf(stderr, "Can't open database: %s\n", sqlite3_errmsg(db));
      return(0);
   } else {
      fprintf(stderr, "Opened database successfully\n");
   }
   sqlite3_close(db);
}

In addition, since above code uses #include <sqlite3.h>, I downloaded sqlite-amalgamation-3240000.zip and extracted the "sqlite3.h" file to the same "C:\sqlite" location.

Command executed from "C:\proj":

gcc test.c -o test -I\sqlite -l sqlite3

But I am getting below error:

C:/prg/mingw-w64/x86_64-8.1.0-posix-seh-rt_v6-rev0/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lsqlite3
collect2.exe: error: ld returned 1 exit status

What am I doing wrong?

Upvotes: 1

Views: 454

Answers (2)

user8556057
user8556057

Reputation:

After some trial and error, it's resolved now and for the benefit of others, here are the steps:

  • Downloaded the one for 64-bit - sqlite-dll-win64-x64-3240000.zip and extracted to C:\sqlite folder

  • Converted the sqlite3.def file to sqlite3.lib by using Developer Command Prompt for VS 2017 and executing /def:sqlite3.def /out:sqlite3.lib /MACHINE:X64 command from C:\sqlite folder

  • This time, the command gcc test.c -o test -I\sqlite -L\sqlite -l sqlite3 from C:\proj folder was successful.

Opened database successfully

Upvotes: 2

Some programmer dude
Some programmer dude

Reputation: 409176

You tell gcc to look for header files in a non-standard location with the -I (upper-case i) option, but nowhere do you tell gcc to look for libraries in a non-standard location using the -L option.

If the libraries are in C:\sqlite\lib then add -LC:\sqlite\lib to the command-line before the -l (lower-case L) option.

Upvotes: 0

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