Print Page - Cannot get SDL to work in MinGW

User forums => Help => Topic started by: JonMW on December 02, 2008, 12:35:55 pm

Title: Cannot get SDL to work in MinGW
Post by: JonMW on December 02, 2008, 12:35:55 pm

When I began dabbling in C, I would write directly with notepad and compile with DJGPP - this worked well enough for the extremely small programs that I wrote at home for my own amusement. Eventually, I worked out that for a graphical interaction with the use, I would use SDL. I discovered that DJGPP was not compatible with SDL, and hence I moved to MinGW.
After reading a few pages of a C SDL tutorial, I decided that notepad wasn't going to be the most efficient way forward - I went with the suggested program, Code::Blocks.

This is where the problems began. Even after several uninstalls/reinstalls and following step-by-step instructions, I am apparently not doing it right.

This is my latest attempt:
I'm running Windows XP.
First, I uninstalled all of the previously mentioned programs and deleted any remaining folders/files.
I downloaded codeblocks-8.02mingw-setup.exe, and installed it. I ticked the box so that it would automatically install MinGW, detect it, and set it as default.

I downloaded SDL-devel-1.2.13-mingw32.tar.gz (http://www.libsdl.org/download-1.2.php) and extracted the archive into its own folder elsewhere on my system.

Then I followed the instructions given here (http://wiki.codeblocks.org/index.php?title=Sdl) following "the good" instructions and then continuing down through "The Process".

I'll be verbose - for each step given, I'll say exactly what I did...
(Steps 1 and 2 are already covered with sufficient detail)

Quote from: wiki

Step 3: Copy SDL.dll from inside the bin folder to the your compilers bin directory (ie C:\Mingw\bin) This allows the compiler to find the dll at runtime time without having to put it in the same folder as your program or in the windows folder.

I copied sdl.dll into C:\Program Files\CodeBlocks\MinGW\bin

Quote from: wiki

Step 4: Copy the contents of lib to your compiler's lib folder. If MinGW is installed under C:\MinGW, then this will be C:\MinGW\lib.

Much like step 2, I copied the contents of the lib file in my SDL archive (three files - two .a's and one .la) into C:\Program Files\CodeBlocks\MinGW\lib

Step 5... it goes on like this.

I decided to perform the optional Step 6 - placing SDL.dll into C:\Windows

I have not yet tried to follow the "Alternative" method (listed under "the good").

Here's a screenshot of the final file structure (relevant, I hope)
(http://img145.imageshack.us/img145/2497/codeblocksfilestructurefo9.th.gif) (http://img145.imageshack.us/my.php?image=codeblocksfilestructurefo9.gif)

That covers "The Good", and I move onto the bottom section, "The Process".
Following the given instructions, I start a new project with the SDL template.
It then asks me to provide the location of SDL on my computer - this doesn't seem to be mentioned in the guide at all. However, the window states 'this folder must contain the subfolders "include" and "lib" ' So I went with C:\Program Files\CodeBlocks\MinGW - it meets the stated requirements and I believe I had copied the necessary files into its subfolders.
Then the error message pops up:
(http://img384.imageshack.us/img384/1662/codeblockserrorfi7.th.gif) (http://img384.imageshack.us/my.php?image=codeblockserrorfi7.gif)

Now, I've seen no mention of this header file up until now, so I'm totally stumped.
I'm doing it wrong - but how do I fix it?

Title: Re: Cannot get SDL to work in MinGW
Post by: TDragon on December 02, 2008, 05:32:07 pm

Unfortunately, the Code::Blocks SDL wizard hasn't been updated since SDL changed its include file layout. Not your fault. To get by this, temporarily copy SDL.h up a level (from "SDL" to "include"). This is just to get the wizard to finish; you should then get rid of the copy and adjust any #include <SDL.h> to #include <SDL/SDL.h>.

Title: Re: Cannot get SDL to work in MinGW
Post by: MortenMacFly on December 02, 2008, 08:49:34 pm

Quote from: TDragon on December 02, 2008, 05:32:07 pm

Unfortunately, the Code::Blocks SDL wizard hasn't been updated since SDL changed its include file layout.

Alternatively easily modify the wizard accordingly (and, if you like, provide us with a patch). To do so directly from the page where you choose the wizards: Right-Click on the SDL wizard and select "Edit" (or was it "Modify"... I don't remember exactly). This wizard is very tiny - you will easily find the position where the include path is defined.

Title: Re: Cannot get SDL to work in MinGW
Post by: JonMW on December 03, 2008, 04:05:02 am

Quote from: TDragon on December 02, 2008, 05:32:07 pm

Unfortunately, the Code::Blocks SDL wizard hasn't been updated since SDL changed its include file layout. Not your fault. To get by this, temporarily copy SDL.h up a level (from "SDL" to "include"). This is just to get the wizard to finish; you should then get rid of the copy and adjust any #include <SDL.h> to #include <SDL/SDL.h>.

It worked! Incredible... I was so sure that I'd made some error somewhere.
Thanks to both of you!

Title: Re: Cannot get SDL to work in MinGW
Post by: stahta01 on December 03, 2008, 01:07:28 pm

Quote from: MortenMacFly on December 02, 2008, 08:49:34 pm

Alternatively easily modify the wizard accordingly (and, if you like, provide us with a patch). To do so directly from the page where you choose the wizards: Right-Click on the SDL wizard and select "Edit" (or was it "Modify"... I don't remember exactly). This wizard is very tiny - you will easily find the position where the include path is defined.

Tested Patch using MinGW GCC; With the changes I think MSVC needs, it finally worked OK.

Should be tested on an Linux Machine.
Should be tested Using MSVC.

FYI: The VC8 dev file did NOT use the include "SDL/SDL.h" used just "SDL.h".

Code

Index: src/plugins/scriptedwizard/resources/sdl/files/main.cpp
===================================================================
--- src/plugins/scriptedwizard/resources/sdl/files/main.cpp	(revision 5327)
+++ src/plugins/scriptedwizard/resources/sdl/files/main.cpp	(working copy)
@@ -3,10 +3,10 @@
 #else
     #include <stdlib.h>
 #endif
-#ifdef __APPLE__
-#include <SDL/SDL.h>
+#ifdef _MSC_VER
+    #include <SDL.h>
 #else
-#include <SDL.h>
+    #include <SDL/SDL.h>
 #endif
 
 int main ( int argc, char** argv )
Index: src/plugins/scriptedwizard/resources/sdl/wizard.script
===================================================================
--- src/plugins/scriptedwizard/resources/sdl/wizard.script	(revision 5327)
+++ src/plugins/scriptedwizard/resources/sdl/wizard.script	(working copy)
@@ -47,8 +47,12 @@
         local dir_nomacro_inc = GetCompilerIncludeDir(dir, SDLPathDefault, SDLPathDefaultInc);
         if (dir_nomacro_inc.IsEmpty())
             return false;
-        if (!VerifyFile(dir_nomacro_inc, _T("SDL.h"), _T("SDL's include")))
+
+        local is_msvc = GetCompilerFactory().CompilerInheritsFrom(Wizard.GetCompilerID(), _T("msvc*"));
+        if (is_msvc && !VerifyFile(dir_nomacro_inc, _T("SDL.h"), _T("SDL's include")))
             return false;
+        if (!is_msvc && !VerifyFile(dir_nomacro_inc, _T("SDL/SDL.h"), _T("SDL's include")))
+            return false;
 
         // verify library dependencies
         local dir_nomacro_lib = GetCompilerLibDir(dir, SDLPathDefault, SDLPathDefaultLib);

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User forums => Help => Topic started by: JonMW on December 02, 2008, 12:35:55 pm