Compiling ImageMagick: Cannot Find 'libwebp', compiled From Source on Amazon Linux 2 – PHP Versions

I am trying to recompile ImageMagick to enable webp support for PHP.

The issue appears to be that when compiling Imagick using ./configure --with-webp=yes it cannot find a libwebp library with a higher version than 0.4.1. Amazon Linux 2’s repos only go up to version 0.3.1. This means compiling libwebp from source, which works but Imagick does not seem to recognize it.

So my question is, how do I ensure ImageMagick can find and use the libwebp library?

Steps

To compile from the source I have done the following:

cd /var
sudo wget https://storage.googleapis.com/downloads.webmproject.org/releases/webp/libwebp-1.1.0.tar.gz
sudo tar xvzf libwebp-1.1.0.tar.gz
cd libwebp-1.1.0
sudo ./configure
sudo make && sudo make install

/sbin/ldconfig -p | grep webp shows the following output which shows libwebp library exists in the /usr/local/lib dir as expected and registered in the ld config.

   libwebpdemux.so.2 (libc6,x86-64) => /usr/local/lib/libwebpdemux.so.2
   libwebpdemux.so (libc6,x86-64) => /usr/local/lib/libwebpdemux.so
   libwebp.so.7 (libc6,x86-64) => /usr/local/lib/libwebp.so.7
   libwebp.so (libc6,x86-64) => /usr/local/lib/libwebp.so

I then try to compile Imagick from source by doing the following:

cd /var
sudo wget https://imagemagick.org/download/ImageMagick.tar.gz
sudo tar xvzf ImageMagick.tar.gz
cd ImageMagick-7.1.0-7
sudo ./configure --with-webp=yes
sudo make && sudo make install
sudo ldconfig /usr/local/lib

However, when running ./configure --with-webp=yes, I get the following output

...

-------------------------------------------------------------
checking for libwebp >= 0.4.1... no
checking for libwebpmux >= 0.5.0 libwebpdemux >= 0.5.0... no

checking if WMF package is complete... no
-------------------------------------------------------------

...

configure:
==============================================================================
ImageMagick 7.1.0-7 is configured as follows. Please verify that this
configuration matches your expectations.

Host system type: x86_64-pc-linux-gnu
Build system type: x86_64-pc-linux-gnu

                  Option                        Value
------------------------------------------------------------------------------
Shared libraries  --enable-shared=yes           yes
Static libraries  --enable-static=yes           yes
Build utilities   --with-utilities=yes          yes
Module support    --with-modules=no             no
GNU ld            --with-gnu-ld=yes             yes
Quantum depth     --with-quantum-depth=16       16
High Dynamic Range Imagery
                  --enable-hdri=yes             yes

Install documentation:                          yes

Memory allocation library:
  JEMalloc          --with-jemalloc=no          no
  TCMalloc          --with-tcmalloc=no          no
  UMem              --with-umem=no              no

Delegate library configuration:
  BZLIB             --with-bzlib=yes            no
  Autotrace         --with-autotrace=no         no
  DJVU              --with-djvu=yes             no
  DPS               --with-dps=yes              no
  FFTW              --with-fftw=no              no
  FLIF              --with-flif=yes             no
  FlashPIX          --with-fpx=yes              no
  FontConfig        --with-fontconfig=yes       no
  FreeType          --with-freetype=yes         no
  Ghostscript lib   --with-gslib=no             no
  Graphviz          --with-gvc=yes              no
  HEIC              --with-heic=yes             no
  JBIG              --with-jbig=yes             no
  JPEG v1           --with-jpeg=yes             yes
  JPEG XL           --with-jxl=no               no
  LCMS              --with-lcms=yes             no
  LQR               --with-lqr=yes              no
  LTDL              --with-ltdl=no              no
  LZMA              --with-lzma=yes             no
  Magick++          --with-magick-plus-plus=yes no (failed tests)
  OpenEXR           --with-openexr=yes          no
  OpenJP2           --with-openjp2=yes          no
  PANGO             --with-pango=yes            no
  PERL              --with-perl=no              no
  PNG               --with-png=yes              yes
  RAQM              --with-raqm=yes             no
  RAW               --with-raw=yes              no
  RSVG              --with-rsvg=no              no
  TIFF              --with-tiff=yes             yes
  WEBP              --with-webp=yes             no
  WMF               --with-wmf=no               no
  X11               --with-x=                   no
  XML               --with-xml=yes              no
  ZIP               --with-zip=yes              no
  ZLIB              --with-zlib=yes             yes
  ZSTD              --with-zstd=yes             no

Delegate program configuration:
  GhostPCL          None                        pcl6 (unknown)
  GhostXPS          None                        gxps (unknown)
  Ghostscript       None                        gs (9.25)

Font configuration:
  Apple fonts       --with-apple-font-dir=default
  Dejavu fonts      --with-dejavu-font-dir=default      none
  Ghostscript fonts --with-gs-font-dir=default          /share/ghostscript/fonts/
  URW-base35 fonts  --with-urw-base35-font-dir=default  none
  Windows fonts     --with-windows-font-dir=default     none

X11 configuration:
  X_CFLAGS        = 
  X_PRE_LIBS      = 
  X_LIBS          = 
  X_EXTRA_LIBS    = 

Options used to compile and link:
  PREFIX          = /usr/local
  EXEC-PREFIX     = /usr/local
  VERSION         = 7.1.0-7
  CC              = gcc
  CFLAGS          = -I/usr/include/libpng15     -fopenmp -Wall -g -O2 -mtune=haswell -fexceptions -pthread -DMAGICKCORE_HDRI_ENABLE=1 -DMAGICKCORE_QUANTUM_DEPTH=16
  CPPFLAGS        =  -DMAGICKCORE_HDRI_ENABLE=1 -DMAGICKCORE_QUANTUM_DEPTH=16
  PCFLAGS         = 
  DEFS            = -DHAVE_CONFIG_H
  LDFLAGS         = 
  LIBS            =    -ltiff   -ljpeg    -lpng15                           -lz       -lm    -lpthread 
  CXX             = g++
  CXXFLAGS        =  -pthread
  FEATURES        = DPC HDRI Cipher OpenMP
  DELEGATES       = jng jpeg png ps tiff zlib
==============================================================================

Related posts:

https://github.com/rosell-dk/webp-convert/wiki/Installing-Imagick-extension-with-WebP-support
https://legacy.imagemagick.org/discourse-server/viewtopic.php?t=35892
Add WebP to ImageMagick supported formats for PHP 7.3 on a WHM dedicated server
https://library.roguewave.com/display/SUPPORT/How+to+compile+Imagick+PHP+extension+with+WebP+support