not found in mac os X mavericks

Question

I tried (apparently successfully) to install libpng on mac os x mavericks.

I downloaded the latest 1-6-8 version .tar.xz and followed the instructions.

./configure runs fine

make check passes everything but png-error that gets skipped

sudo make install apparently works fine since my library libpng. appears.

Now, when i try to compile the C file that i need to compile, using the string

clang -w -lz -lpng16 libpng_test.c

i get the error

fatal error: 'png.h' file not found

#include <png.h>

and obviously it does not compile.

I tried installing both with homebrew and macports and it always seems to run fine, but i always get the same error

"-lz" should follow "-lpng16" on your compile command. Not sure that is the explanation for your issue though. — Glenn Randers-Pehrson, Mar 01 '14 at 00:05

score 8 · Accepted Answer · edited Aug 10 '15 at 16:20

8

First you have to find where the png.h file is located

sudo find / -name png.h

Here in my environment it is located at /usr/local/include

Then look for libpng.a

sudo find / -name libpng.a

Here in my environment it is located at /usr/local/lib

Now add those directories to the clang command line:

clang -I/usr/local/include -L/usr/local/lib -w -lz -lpng16 libpng_test.c

edited Aug 10 '15 at 16:20

Slipp D. Thompson

answered Jan 22 '14 at 02:03

Thanks a lot. In the end i managed to use openCV which, i discoverd later, was more suitable for my needs :) – lucarc Feb 10 '14 at 10:35
Where is libpng_test.c? – rjurney Jun 03 '15 at 23:09
How to do the same but using `g++-8`? – Gusev Slava Nov 21 '18 at 05:57
Wouldn't recommend using sudo here – tommmm Feb 25 '22 at 07:50

1 Answers1