How to install ImageMagick® from source on OS X 10.11 through macOS 13.x Ventura

With trial and error, I have managed to compile and install the latest ImageMagick supporting PNG file format from source.
This is the memorandum how to compile and install ImageMagick from source on OS X 10.11 through macOS 13.x Ventura without MacPorts nor Homebrew.

Modern releases of ImageMagick 6.9.3.x use libpng.pc to find and configure the PNG reference library.
Compiling ImageMagick 7.0.1.x with the PNG delegate library, pkg-config is required.
For compiling ImageMagick 7.0.6.x with the latest PNG library (libpng ≧1.6.31), zlib library is required.

1) First, install pkg-config.
2) Second, install zlib.
3) Third, install libpng.
4) Then you can compile and install ImageMagick with the PNG reference library.

Install pkg-config

1. Download the latest pkg-config

cd ~
curl -O https://pkg-config.freedesktop.org/releases/pkg-config-0.29.2.tar.gz
tar zxf pkg-config-0.29.2.tar.gz

2. Configure pkg-config

cd pkg-config-0.29.2
export LDFLAGS="-framework CoreFoundation" 
./configure --with-internal-glib --prefix=/usr/local/pkgconfig

3. Compile and install pkg-config

make && make check
sudo make install

4. Set search path

export PATH="/usr/local/keyconfig/bin:$PATH"

Install zlib

1. Download the latest zlib

cd ~
curl -O https://www.zlib.net/zlib-1.2.13.tar.gz
tar zxf zlib-1.2.13.tar.gz

2. Configure zlib

cd zlib-1.2.13
./configure --prefix=/usr/local/zlib

3. Compile and install zlib

make && make check
sudo make install

Install libpng

1. Download the latest libpng

cd ~
curl -LO https://download.sourceforge.net/libpng/libpng-1.6.39.tar.gz
tar zxf libpng-1.6.39.tar.gz

2. Configure libpng

cd libpng-1.6.39
./configure --prefix=/usr/local/libpng

3. Compile and install libpng

make && make check
sudo make install

Install ImageMagick

1. Download the latest ImageMagick

cd ~
curl -LO https://imagemagick.org/archive/ImageMagick-7.1.1-0.tar.gz
tar zxf ImageMagick-7.1.1-0.tar.gz

2. Configure ImageMagick

cd ImageMagick-7.1.1-0
export PKG_CONFIG_PATH="/usr/local/libpng/lib/pkgconfig/:/usr/local/zlib/lib/pkgconfig/"
./configure --prefix=/usr/local/magick --with-png

3. Verify configuration ends up with the report as follows:

PNG               --with-png=yes		yes

4. Compile and install ImageMagick

make && make check
sudo make install

5. Set search path

export PATH="/usr/local/magick/bin:$PATH"

6. Verify ImageMagick installed properly

identify -version
Version: ImageMagick 7.1.1-0 Q16-HDRI x86_64 20944 https://imagemagick.org
Copyright: (C) 1999 ImageMagick Studio LLC
License: https://imagemagick.org/script/license.php
Features: Cipher DPC HDRI 
Delegates (built-in): bzlib png zlib
Compiler: gcc (4.2)

7. Verify ImageMagick is working properly

convert logo: ~/Desktop/logo.png
identify ~/Desktop/logo.png
/Users/xxx/Desktop/logo.png PNG 640x480 640x480+0+0 8-bit sRGB 256c 27434B 0.000u 0:00.001

8. At last open logo.png and confirm the following ImageMagic Logo appears.

9. If the FreeType library is not installed, you do not pass the unit tests and "make check" may end up with:

=========================================
   ImageMagick 7.0.4: ./test-suite.log
=========================================
# TOTAL: 86
# PASS:  84
# SKIP:  0
# XFAIL: 0
# FAIL:  2
# XPASS: 0
# ERROR: 0

.. contents:: :depth: 2

FAIL: tests/wandtest
====================
wandtest: delegate library support not built-in '/Library/Fonts//Arial.ttf' (Freetype) 
@ warning/annotate.c/RenderFreetype/1792.
...
FAIL: tests/wandtest.tap 1

FAIL: Magick++/demo/demos
=========================
button: delegate library support not built-in '/Library/Fonts//Arial.ttf' (Freetype) 
@ warning/annotate.c/RenderFreetype/1792.
...
FAIL: Magick++/demo/demos.tap 6

You occasionally may be encountered in a configuration failure ending up with:

configure: error: in `/Users/xxx/Desktop/ImageMagick-7.0.8-66':
configure: error: libltdl is required for modules and OpenCL builds

If so, install libtool to avoid an error.

Install libtool

1. Download the latest libtool

cd ~
curl -LO https://ftpmirror.gnu.org/libtool/libtool-2.4.6.tar.gz
tar zxf libtool-2.4.6.tar.gz

2. Configure libtool

cd libtool-2.4.6
./configure --prefix=/usr/local/libtool

3. Compile and install pkg-config

make
sudo make install

4. Set search path

export PATH="/usr/local/libtool/bin:/usr/local/libtool/share:$PATH"

5. Configure ImageMagick like this:

export LDFLAGS="-L/usr/local/libtool/lib/"
export CPPFLAGS="-I/usr/local/libtool/include"
export PKG_CONFIG_PATH="/usr/local/libpng/lib/pkgconfig/:/usr/local/zlib/lib/pkgconfig/"
./configure --prefix=/usr/local/magick --with-png

If you need more than one library (e.g. jpeg, pdf, png, tiff, etc.),

1. Place pkg-config and those libraries into the same directory:

/usr/local/magick

2. Configure ImageMagick like this:

export LDFLAGS="-L/usr/local/magick/lib/"
export CPPFLAGS="-I/usr/local/magick/include"
export PKG_CONFIG_PATH="/usr/local/magick/lib/pkgconfig/"
./configure --prefix=/usr/local/magick --with-freetype --with-jpeg --with-png --with-tiff

3. Verify configuration ends up with the report as follows:

FreeType          --with-freetype=yes       yes
JPEG v1           --with-jpeg=yes           yes
PNG               --with-png=yes            yes
TIFF              --with-tiff=yes           yes

4. Compile and install ImageMagick

make
sudo make install

5. Set search path

export PATH="/usr/local/magick/bin:$PATH"

6. Verify ImageMagick installed properly

identify -version
Version: ImageMagick 7.0.6-3 Q16 x86_64 2017-07-25 http://www.imagemagick.org
Copyright: © 1999-2017 ImageMagick Studio LLC
License: http://www.imagemagick.org/script/license.php
Features: Cipher DPC HDRI
Delegates (built-in): bzlib freetype jpeg png tiff