README-cmake.txt
author Sam Lantinga <slouken@libsdl.org>
Wed, 10 Jul 2013 21:57:31 -0700
changeset 7396 a36ab6149a10
parent 7222 2435b221d77d
permissions -rw-r--r--
Fixed bug 1953 - Crash at memcpy X11_DispatchEvent(_THIS) Function Nitz In Function X11_DispatchEvent(_THIS), case SelectionNotify : static void X11_DispatchEvent(_THIS) { // Some Code case SelectionNotify: { //Some Code SDL_bool expect_lf = SDL_FALSE; char *start = NULL; // Initialised with NULL char *scan = (char*)p.data; char *fn; char *uri; int length = 0; while (p.count--) { if (!expect_lf) { if (*scan==0x0D) { expect_lf = SDL_TRUE; } else if(start == NULL) { start = scan; length = 0; } length++; } else { if (*scan==0x0A && length>0) { uri = malloc(length--); memcpy(uri, start, length); // Problem is Here, start is still NULL if control comes to else statement without initialising the start pointer, which is wrong uri[length] = 0; fn = X11_URIToLocal(uri); if (fn) SDL_SendDropFile(fn); free(uri); } expect_lf = SDL_FALSE; start = NULL; } scan++; } } As shown above how start pointer remains NULL, Patch for this issue would be: if (*scan==0x0D) { expect_lf = SDL_TRUE; } if(start == NULL) { start = scan; length = 0; } Just replace else if statement with if.

================================================================================
CMake build system for SDL (www.cmake.org)
================================================================================

SDL's build system was traditionally based on autotools. Over time, this
approach has suffered from several issues across the different supported 
platforms.
To solve these problems, a new build system based on CMake is under development.
It works in parallel to the legacy system, so users can experiment with it
without complication.
While still experimental, the build system should be usable on the following
platforms:
    
    * FreeBSD
    * Linux
    * VS.NET 2010
    * MinGW and Msys
    * OS X with support for XCode
    
================================================================================
Usage
================================================================================

Assuming the source for SDL is located at ~/sdl

cd ~
mkdir build
cd build
cmake ../sdl

This will build the static and dynamic versions of SDL in the ~/build directory.