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Bug 2636

Summary: Changeset 461 breaks build on Linux with libpng v1.5
Product: SDL_image Reporter: Joe LeVeque <joeleveque>
Component: miscAssignee: Sam Lantinga <slouken>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: blocker    
Priority: P2    
Version: unspecified   
Hardware: x86   
OS: Linux   

Description Joe LeVeque 2014-07-10 17:35:23 UTC 
It appears as though png_const_bytep is already defined in libpng v1.5, and thus this changeset creates a multiple define. To fix, png_const_bytep should only be defined for libpng < 1.5, as follows:

/* Check for the older version of libpng */
#if (PNG_LIBPNG_VER_MAJOR == 1)
#if (PNG_LIBPNG_VER_MINOR < 5)
#define LIBPNG_VERSION_12
#endif
#if (PNG_LIBPNG_VER_MINOR < 5)
typedef png_bytep png_const_bytep;
#endif
#if (PNG_LIBPNG_VER_MINOR < 6)
typedef png_structp png_const_structrp;
typedef png_infop png_const_inforp;
#endif
#endif
Comment 1 Sam Lantinga 2014-07-11 06:00:46 UTC 
Fixed, thanks!
https://hg.libsdl.org/SDL_image/rev/4078e65827ea