MathGL on Mac OS X

[farshidhss]

Hi,

The installation fails for mathgl-1.11.2 under Mac OS X 10.7.3 with the latest
libpng package installed. I get the following error during the make:

libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I../include/mgl -DMGL_FONT_PATH=\"/usr/local/share/mathgl/fonts/\" -DMOD_LIB_DIR=\"/usr/local/lib/mgl/\" -Wall -I/usr/local/include -I../include -I../include -DHAVE_PTHREAD -g -O2 -MT libmgl_la-mgl_data_png.lo -MD -MP -MF .deps/libmgl_la-mgl_data_png.Tpo -c mgl_data_png.cpp  -fno-common -DPIC -o .libs/libmgl_la-mgl_data_png.o
mgl_data_png.cpp: In member function 'void mglData::Export(const char*, const char*, mreal, mreal, int) const':
mgl_data_png.cpp:183: error: 'Z_BEST_COMPRESSION' was not declared in this scope
make[1]: *** [libmgl_la-mgl_data_png.lo] Error 1
make: *** [all-recursive] Error 1

[farshidhss]

sorry forgot to mention that I installed libpng 1.5.9 and gel 1.9
Your help is very appreciated.

[Alexey Balakin]

Hi,

It is strange error, because Z_BEST_COMPRESSION is standard definition in zlib
http://zlib.net/manual.html#Constants

I can only suggest to replace this definition by its numeric value. I.e. add
define Z_BEST_COMPRESSION=9 (or if fails then =-1).

[farshidhss]

Thank you very much, that fixed the problem. Now I can run the mgl_example. It
outputs to png and eps but not pdf. When I runt ./mgl_example it outputs the
name of the plots as usual and takes some time processing but in the end there
is no pdf file created in the example folder. Do you have any hint on that?

[farshidhss]

oh I meant ./mgl_example -pdf

[Alexey Balakin]

Option -pdf will produce PDF with U3D. Most probably that you don't include
support of U3D and/or PDF at build time.

[farshidhss]

I see thanks, well then I investigate how to add support for pdf and come back
to you if got lost. Cheers.