how to install ImageMagick with PNG

[alpheus]

Hi,

I'm new to ImageMagick and I've been trying to install it on CentOS via the ./configure , make procedure. But during make I always get

Code: Select all

coders/png.c: In function WriteOnePNGImage:
coders/png.c:6650: error: PNG_COLOR_TYPE_RGBA undeclared

I don't know if i'm doing anything wrong. Any assistance is greatly appreciated.

Thanks!
Jun

[fmw42]

I don't know much about Linux or CentOS, I am on a Mac. But this works for me.

install the png (and any other delegate libraries) first, then recompile IM.

see
http://www.imagemagick.org/download/delegates/

but you might want to search the web for more current versions

[alpheus]

Hi fmw42,

Thanks for directing me to the delegates. I've fixed the problem but I wasn't entirely sure where I hit it. Here's what I did.

• 1. removed libpng-devel
  2. installed libpng-devel
  3. downloaded and extracted ImageMagick zip file into a folder
  4. ran ./configure --without-png
  (i did this just to test if the error i received during make was indeed from the png library)
  5. ran make
  (this time there were no errors)
  6. ran ./configure
  (this time with options / parameters)
  7. ran make
  (again, the errors on the png were gone)
  8. ran make install

Imagemagick installed successully afterwhich, I installed imagick for php after and checked phpinfo(). Imagick is installed and ImageMagick supported formats now include PNG.

I guess the problem lied with the libpng-devel. It may have been a faulty installation.

Thanks!

Jun