joe@choskimac-iii workspace % git clone https://github.com/kermitt2/pdfalto.git && cd pdfalto
Cloning into 'pdfalto'...
remote: Enumerating objects: 2905, done.
remote: Counting objects: 100% (572/572), done.
remote: Compressing objects: 100% (327/327), done.
remote: Total 2905 (delta 346), reused 451 (delta 239), pack-reused 2333
Receiving objects: 100% (2905/2905), 62.02 MiB | 10.84 MiB/s, done.
Resolving deltas: 100% (1347/1347), done.

joe@choskimac-iii pdfalto % git submodule update --init --recursive
Submodule 'xpdf-4.03' (git@github.com:kermitt2/xpdf-4.03.git) registered for path 'xpdf-4.03'
Cloning into '/Users/joe/workspace/pdfalto/xpdf-4.03'...
Submodule path 'xpdf-4.03': checked out 'd1d1fe28e267911a8e5a8b51b9ebde250a7d70e7'

joe@choskimac-iii pdfalto % cmake .
-- The C compiler identification is AppleClang 13.0.0.13000029
-- The CXX compiler identification is AppleClang 13.0.0.13000029
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /Library/Developer/CommandLineTools/usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /Library/Developer/CommandLineTools/usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found fontconfig
Using macos settings.
++ 64 bit architecture
CMake Deprecation Warning at xpdf-4.03/CMakeLists.txt:11 (cmake_minimum_required):
  Compatibility with CMake < 2.8.12 will be removed from a future version of
  CMake.

  Update the VERSION argument <min> value or use a ...<max> suffix to tell
  CMake that the project does not need compatibility with older versions.


-- Looking for mkstemp
-- Looking for mkstemp - found
-- Looking for mkstemps
-- Looking for mkstemps - found
-- Looking for popen
-- Looking for popen - found
-- Performing Test HAVE_STD_SORT
-- Performing Test HAVE_STD_SORT - Success
-- Looking for fseeko
-- Looking for fseeko - found
-- Looking for fseek64
-- Looking for fseek64 - not found
-- Looking for _fseeki64
-- Looking for _fseeki64 - not found
-- Found FreeType (old-style includes): /Users/joe/workspace/pdfalto/libs/freetype/mac/64/libfreetype.a
-- Found fontconfig
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
-- Found Threads: TRUE  
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/joe/workspace/pdfalto

joe@choskimac-iii pdfalto % make
[  1%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/AcroForm.cc.o
[  2%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/Annot.cc.o
[  2%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/Array.cc.o
[  3%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/BuiltinFont.cc.o
[  4%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/BuiltinFontTables.cc.o
[  5%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/Catalog.cc.o
[  5%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/CharCodeToUnicode.cc.o
[  6%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/CMap.cc.o
[  7%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/Decrypt.cc.o
[  8%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/Dict.cc.o
[  8%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/DisplayState.cc.o
[  9%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/Error.cc.o
[ 10%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/FontEncodingTables.cc.o
[ 11%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/Function.cc.o
[ 11%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/Gfx.cc.o
[ 12%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/GfxFont.cc.o
[ 13%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/GfxState.cc.o
[ 14%] Building CXX object xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/GlobalParams.cc.o
/Users/joe/workspace/pdfalto/xpdf-4.03/xpdf/GlobalParams.cc:27:12: fatal error: 'fontconfig/fontconfig.h' file not found
#  include <fontconfig/fontconfig.h>
           ^~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
make[2]: *** [xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/GlobalParams.cc.o] Error 1
make[1]: *** [xpdf-4.03/xpdf/CMakeFiles/xpdf.dir/all] Error 2
make: *** [all] Error 2

joe@choskimac-iii pdfalto % clang -v
Apple clang version 13.0.0 (clang-1300.0.29.3)
Target: x86_64-apple-darwin21.1.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin

joe@choskimac-iii pdfalto % gcc -v
Configured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/4.2.1
Apple clang version 13.0.0 (clang-1300.0.29.3)
Target: x86_64-apple-darwin21.1.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin

joe@choskimac-iii pdfalto % cmake --version
cmake version 3.22.0

CMake suite maintained and supported by Kitware (kitware.com/cmake).

joe@choskimac-iii pdfalto % wget -V
GNU Wget 1.21.2 built on darwin20.4.0.