Mac OS X build - jpeglib failure

[scharfie]

When I try to build the Xara source on my MacBook Pro, I get errors about jpeglib.h

In file included from .././Kernel/exjpeg.h:104,
from maskfilt.cpp:118:
.././Kernel/jpglib_namespace.h:116:22: error: jpeglib.h: No such file or directory
.././Kernel/exjpeg.h:144: error: 'J_DCT_METHOD' in namespace 'libJPEG' does not name a type
.././Kernel/exjpeg.h:145: error: expected unqualified-id before '&' token
.././Kernel/exjpeg.h:145: error: expected ',' or '...' before '&' token
.././Kernel/exjpeg.h:145: error: ISO C++ forbids declaration of 'parameter' with no type
.././Kernel/exjpeg.h:147: error: 'J_COLOR_SPACE' in namespace 'libJPEG' does not name a type
.././Kernel/exjpeg.h:149: error: expected unqualified-id before '&' token
.././Kernel/exjpeg.h:149: error: expected ',' or '...' before '&' token
.././Kernel/exjpeg.h:149: error: ISO C++ forbids declaration of 'parameter' with no type
.././Kernel/exjpeg.h:173: error: 'J_DCT_METHOD' in namespace 'libJPEG' does not name a type
.././Kernel/exjpeg.h:174: error: 'J_COLOR_SPACE' in namespace 'libJPEG' does not name a type
.././Kernel/exjpeg.h:275: error: 'jpeg_compress_struct' in namespace 'libJPEG' does not name a type
make[2]: *** [maskfilt.o] Error 1
make[1]: *** [all] Error 2
make: *** [all-recursive] Error 1


However, fink list libjpeg reports that the library is installed:

i libjpeg 6b-16 JPEG image format handling library
i libjpeg-bin 6b-16 Executables for libjpeg package
i libjpeg-shlibs 6b-16 Shared libraries for libjpeg package

Does anyone know what's going on here?
Any help on this would be greatly appreciated.

[scharfie]

Ok, I think I have the jpeglib part figured out from here (http://www.xaraxtreme.org/maillists/.../msg00006.html).

However, now I get the following:
impexpop.cpp: In member function 'virtual void OpMenuExport:oWithParam(OpDescriptor*, OpParam*)':
impexpop.cpp:1228: error: cannot convert 'String_256' to 'char*' in initialization
impexpop.cpp:1229: error: cannot convert 'String_256' to 'char*' in initialization
make[1]: *** [impexpop.o] Error 1
make: *** [all-recursive] Error 1

[GerryI]

A patch has been checked in that should get rid of this error...

Gerry Iles

[scharfie]

Alright, I used svn this time to get the source and that fixed the string_256 compile errors. Now, it appears I have a linker problem with libpng:

g++ Kernel/*.o wxOil/*.o tools/*.o wxXtra/*.o --debug -L./libs/darwin -L/Users/Chris/XaraLX/wxMac-2.6.3/build-unicode-debug/lib -framework QuickTime -framework IOKit -framework Carbon -framework Cocoa -framework System -lwx_macud-2.6 -L/usr/lib -lxml2 -lz -lpthread -liconv -lm -lCDraw -o XaraLX
/usr/bin/ld: Undefined symbols:
_png_error
_png_get_io_ptr
_png_create_info_struct
_png_create_write_struct_2
_png_destroy_write_struct
_png_set_bgr
_png_set_interlace_handling
_png_set_swap
_png_set_write_fn
_png_write_end
_png_write_info
_png_write_row
_png_create_read_struct_2
_png_destroy_read_struct
_png_free
_png_get_IHDR
_png_get_PLTE
_png_get_bit_depth
_png_get_channels
_png_get_color_type
_png_get_gAMA
_png_get_interlace_type
_png_get_pHYs
_png_get_rowbytes
_png_get_sRGB
_png_get_tRNS
_png_get_valid
_png_malloc
_png_read_end
_png_read_image
_png_read_info
_png_read_update_info
_png_set_expand
_png_set_gamma
_png_set_gray_to_rgb
_png_set_invert_alpha
_png_set_read_fn
_png_set_read_status_fn
_png_set_sig_bytes
_png_set_strip_16
collect2: ld returned 1 exit status
make[1]: *** [XaraLX] Error 1
make: *** [all-recursive] Error 1

I downloaded and compiled libpng 1.2.10, but maybe the linker isn't seeing it?

[PhilM]

You need to add -lpng to your link command: In the makefile.am file in the root of the project, find the line that starts XaraLX_LDFLAGS = and add " -lpng" to the end (without the quotes).

We hope to make an Xcode project available which will simplify all these build problems on the Mac (and allow Universal Binaries to be created).

Phil

[scharfie]

Thanks, it finally compiled completely :-) Unfortunately, it doesn't do anything at all. I can't click anything except the x/-/+ widgets. The first thing that comes up is a dialog indicating that the fonts data was messed up, but I can't even click the OK button.

[PhilM]

That sounds like the usual problem that Finder doesn't recognise the executable correctly. There's an empty bundle in the project which you can use:

In the root of the project you should see a folder called XaraLX.app. Copy (or move) your executable into XaraLX.app/Contents/MacOS and then run XaraLX.app.

cp XaraLX XaraLX.app/Contents/MacOS
open XaraLX.app