imlib: build fails with libpng 1.5

[rlhamil]

This is on 10.7.4 with Xcode 4.4.1. Following is the interesting part of the build log for imlib:

:info:build libtool: compile:  /usr/bin/clang -DSYSTEM_IMRC=\"/opt/local/etc/imrc\" -DIMLIB_LIB=\"/opt/local/lib\" -DSYSCONFDIR=\"/opt/local/etc\" -I. -I.. -I. -I. -I.. -I./.. -I/opt/local/include/gtk-1.2 -I/opt/local/include/glib-1.2 -I/opt/local/lib/glib/include -I/opt/local/include -I/opt/local/include -I/opt/local/include -I/opt/local/include/gtk-1.2 -I/opt/local/include/glib-1.2 -I/opt/local/lib/glib/include -I/opt/local/include -I/opt/local/include -I/opt/local/include -pipe -O2 -arch x86_64 -arch i386 -c modules.c  -fno-common -DPIC -o .libs/modules.o
:info:build In file included from modules.c:36:
:info:build ./io-png.c:43:21: error: incomplete definition of type 'struct png_struct_def'
:info:build   if (setjmp(png_ptr->jmpbuf))
:info:build              ~~~~~~~^
:info:build /opt/local/include/png.h:854:16: note: forward declaration of 'struct png_struct_def'
:info:build typedef struct png_struct_def png_struct;
:info:build                ^
:info:build In file included from modules.c:36:
:info:build ./io-png.c:49:15: error: incomplete definition of type 'struct png_info_def'
:info:build   if (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
:info:build       ~~~~~~~~^
:info:build /opt/local/include/png.h:727:16: note: forward declaration of 'struct png_info_def'
:info:build typedef struct png_info_def png_info;
:info:build                ^
:info:build In file included from modules.c:36:
:info:build ./io-png.c:278:21: error: incomplete definition of type 'struct png_struct_def'
:info:build   if (setjmp(png_ptr->jmpbuf))
:info:build              ~~~~~~~^
:info:build /opt/local/include/png.h:854:16: note: forward declaration of 'struct png_struct_def'
:info:build typedef struct png_struct_def png_struct;
:info:build                ^
:info:build In file included from modules.c:36:
:info:build ./io-png.c:284:15: error: incomplete definition of type 'struct png_info_def'
:info:build   if (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
:info:build       ~~~~~~~~^
:info:build /opt/local/include/png.h:727:16: note: forward declaration of 'struct png_info_def'
:info:build typedef struct png_info_def png_info;
:info:build                ^
:info:build In file included from modules.c:36:
:info:build ./io-png.c:443:20: error: incomplete definition of type 'struct png_struct_def'
:info:build         if (setjmp(png_ptr->jmpbuf))
:info:build                    ~~~~~~~^
:info:build /opt/local/include/png.h:854:16: note: forward declaration of 'struct png_struct_def'
:info:build typedef struct png_struct_def png_struct;
:info:build                ^
:info:build In file included from modules.c:36:
:info:build ./io-png.c:449:14: error: incomplete definition of type 'struct png_info_def'
:info:build         if (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
:info:build             ~~~~~~~~^
:info:build /opt/local/include/png.h:727:16: note: forward declaration of 'struct png_info_def'
:info:build typedef struct png_info_def png_info;
:info:build                ^
:info:build In file included from modules.c:36:
:info:build ./io-png.c:638:22: error: incomplete definition of type 'struct png_struct_def'
:info:build           if (setjmp(png_ptr->jmpbuf))
:info:build                      ~~~~~~~^
:info:build /opt/local/include/png.h:854:16: note: forward declaration of 'struct png_struct_def'
:info:build typedef struct png_struct_def png_struct;
:info:build                ^
:info:build In file included from modules.c:37:
:info:build ./io-bmp.c:59:47: warning: use of logical '&&' with constant operand [-Wconstant-logical-operand]
:info:build   if (bpp != 1 && bpp != 4 && bpp != 8 && bpp && 16 && bpp != 24 && bpp != 32)
:info:build                                               ^  ~~
:info:build ./io-bmp.c:59:47: note: use '&' for a bitwise operation
:info:build   if (bpp != 1 && bpp != 4 && bpp != 8 && bpp && 16 && bpp != 24 && bpp != 32)
:info:build                                               ^~
:info:build                                               &
:info:build ./io-bmp.c:59:47: note: remove constant to silence this warning
:info:build   if (bpp != 1 && bpp != 4 && bpp != 8 && bpp && 16 && bpp != 24 && bpp != 32)
:info:build                                              ~^~~~~
:info:build In file included from modules.c:38:
:info:build ./io-gif.c:46:4: warning: implicit declaration of function 'PrintGifError' is invalid in C99 [-Wimplicit-function-declaration]
:info:build           PrintGifError();
:info:build           ^
:info:build In file included from modules.c:43:
:info:build ./io-xpm.c:130:17: warning: passing 'unsigned char [6]' to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
:info:build                       strncpy(cmap[j].str, line, cpp);
:info:build                       ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
:info:build /usr/include/secure/_string.h:124:31: note: expanded from macro 'strncpy'
:info:build    ? __builtin___strncpy_chk (dest, src, len, __darwin_obsz (dest))     \
:info:build                               ^
:info:build In file included from modules.c:43:
:info:build ./io-xpm.c:130:17: warning: passing 'unsigned char [6]' to parameter of type 'char *' converts between pointers to integer types with different sign [-Wpointer-sign]
:info:build                       strncpy(cmap[j].str, line, cpp);
:info:build                       ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
:info:build /usr/include/secure/_string.h:125:28: note: expanded from macro 'strncpy'
:info:build    : __inline_strncpy_chk (dest, src, len))
:info:build                            ^
:info:build /usr/include/secure/_string.h:128:40: note: passing argument to parameter '__dest' here
:info:build __inline_strncpy_chk (char *__restrict __dest, const char *__restrict __src,
:info:build                                        ^
:info:build In file included from modules.c:43:
:info:build ./io-xpm.c:295:24: warning: passing 'unsigned char [6]' to parameter of type 'const char *' converts between pointers to integer types with different sign [-Wpointer-sign]
:info:build                                   if (!strcmp(col, cmap[j].str))
:info:build                                                    ^~~~~~~~~~~
:info:build /usr/include/string.h:87:39: note: passing argument to parameter here
:info:build int      strcmp(const char *, const char *);
:info:build                                           ^
:info:build In file included from modules.c:43:
:info:build ./io-xpm.c:326:24: warning: passing 'unsigned char [6]' to parameter of type 'const char *' converts between pointers to integer types with different sign [-Wpointer-sign]
:info:build                                   if (!strcmp(col, cmap[j].str))
:info:build                                                    ^~~~~~~~~~~
:info:build /usr/include/string.h:87:39: note: passing argument to parameter here
:info:build int      strcmp(const char *, const char *);
:info:build                                           ^
:info:build 6 warnings and 7 errors generated.

[ryandesign (Ryan Carsten Schmidt)]

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[ryandesign (Ryan Carsten Schmidt)]

r97471