duncantl/Rtesseract cannot find sample images to test leptonica

[leekgans]

I am trying to install duncantl/Rtesseract on a Mac running Big Sur. I used homebrew to install leptonica, tesseract, and pkg-config to get this far. But, now it is saying it can't find the sample files for some image types, and saying it can't be compiled.

Here's the output:

`> library(remotes)

install_github("duncantl/Rtesseract")
Downloading GitHub repo duncantl/Rtesseract@HEAD
✓ checking for file ‘/private/var/folders/3h/1f85xrs966s86gznzxn26ypc0000gn/T/Rtmprl9Zn9/remotes7aae3031a823/duncantl-Rtesseract-b941ca1/DESCRIPTION’ ...
─ preparing ‘Rtesseract’:
✓ checking DESCRIPTION meta-information ...
─ cleaning src
─ running ‘cleanup’
─ checking for LF line-endings in source and make files and shell scripts
─ checking for empty or unneeded directories
─ building ‘Rtesseract_0.4-0.tar.gz’

• installing source package ‘Rtesseract’ ...
  ** using staged installation
  checking for pkg-config... /usr/local/bin/pkg-config
  checking for g++... g++
  checking whether the C++ compiler works... yes
  checking for C++ compiler default output file name... a.out
  checking for suffix of executables...
  checking whether we are cross compiling... no
  checking for suffix of object files... o
  checking whether we are using the GNU C++ compiler... yes
  checking whether g++ accepts -g... yes
  CXXFLAGS = -std=c++11
  Tesseract CFLAGS = -I/usr/local/include -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica
  Did not find baseapi.h directly. Need to look for <tesseract/baseapi.h> or add tesseract to include flags -I/usr/local/include -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica -DADD_TESSERACT_DIR=1
  Has textonly parameter
  NO DetectOrientationScript() method
  No OEM_CUBE_ONLY enumeration value for the TessBaseAPI
  Compiling readImage
  testing leptonica can read different image formats
  Error in fopenReadStream: file not found
  Error in pixRead: image file not found: inst/images/IMG_1236.jpg
  Error in fopenReadStream: file not found
  Error in pixRead: image file not found: inst/images/OCRSample.tiff
  png support
  webp support
  Error in findFileFormatStream: truncated file
  Error in pixReadStream: Unknown format: no pix returned
  Error in pixRead: pix not read
  ** no jp2 suppport
  gif support
  bmp support
  pnm support
  Error in pixReadStream: Unknown format: no pix returned
  Error in pixRead: pix not read
  spix support
  Tesseract version: 5.0.0-alpha-20210401-158-ge1761
  Leptonica version: 1.81.1
  R_INCLUDE_DIR: /Library/Frameworks/R.framework/Resources/include
  configure: creating ./config.status
  config.status: creating src/Makevars
  config.status: creating R/imageCapabilities.R
  config.status: creating R/config.R
  ** libs
  clang++ -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica -I/usr/local/include -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica -DADD_TESSERACT_DIR=1 -DHAS_GETINPUT_NAME=1 -DHAS_GETDATAPATH=1 -DHAS_GETSOURCEYRESOLUTION=1 -DPDF_RENDER_HAS_TEXT_ONLY=1 -DHAS_OEM_LSTM=1 -std=gnu++11 -I/usr/local/include -fPIC -Wall -g -O2 -c PageSegMode.cc -o PageSegMode.o
  clang++ -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica -I/usr/local/include -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica -DADD_TESSERACT_DIR=1 -DHAS_GETINPUT_NAME=1 -DHAS_GETDATAPATH=1 -DHAS_GETSOURCEYRESOLUTION=1 -DPDF_RENDER_HAS_TEXT_ONLY=1 -DHAS_OEM_LSTM=1 -std=gnu++11 -I/usr/local/include -fPIC -Wall -g -O2 -c RConverters.cc -o RConverters.o
  clang++ -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica -I/usr/local/include -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica -DADD_TESSERACT_DIR=1 -DHAS_GETINPUT_NAME=1 -DHAS_GETDATAPATH=1 -DHAS_GETSOURCEYRESOLUTION=1 -DPDF_RENDER_HAS_TEXT_ONLY=1 -DHAS_OEM_LSTM=1 -std=gnu++11 -I/usr/local/include -fPIC -Wall -g -O2 -c RtesseractBoxRenderer.cc -o RtesseractBoxRenderer.o
  clang++ -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica -I/usr/local/include -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica -DADD_TESSERACT_DIR=1 -DHAS_GETINPUT_NAME=1 -DHAS_GETDATAPATH=1 -DHAS_GETSOURCEYRESOLUTION=1 -DPDF_RENDER_HAS_TEXT_ONLY=1 -DHAS_OEM_LSTM=1 -std=gnu++11 -I/usr/local/include -fPIC -Wall -g -O2 -c confidence.cpp -o confidence.o
  clang++ -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica -I/usr/local/include -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica -DADD_TESSERACT_DIR=1 -DHAS_GETINPUT_NAME=1 -DHAS_GETDATAPATH=1 -DHAS_GETSOURCEYRESOLUTION=1 -DPDF_RENDER_HAS_TEXT_ONLY=1 -DHAS_OEM_LSTM=1 -std=gnu++11 -I/usr/local/include -fPIC -Wall -g -O2 -c exit.cpp -o exit.o
  clang++ -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica -I/usr/local/include -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica -DADD_TESSERACT_DIR=1 -DHAS_GETINPUT_NAME=1 -DHAS_GETDATAPATH=1 -DHAS_GETSOURCEYRESOLUTION=1 -DPDF_RENDER_HAS_TEXT_ONLY=1 -DHAS_OEM_LSTM=1 -std=gnu++11 -I/usr/local/include -fPIC -Wall -g -O2 -c ext.cpp -o ext.o
  clang++ -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica -I/usr/local/include -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica -DADD_TESSERACT_DIR=1 -DHAS_GETINPUT_NAME=1 -DHAS_GETDATAPATH=1 -DHAS_GETSOURCEYRESOLUTION=1 -DPDF_RENDER_HAS_TEXT_ONLY=1 -DHAS_OEM_LSTM=1 -std=gnu++11 -I/usr/local/include -fPIC -Wall -g -O2 -c lept.cc -o lept.o
  clang++ -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica -I/usr/local/include -I/usr/local/Cellar/leptonica/1.81.1/include/leptonica -DADD_TESSERACT_DIR=1 -DHAS_GETINPUT_NAME=1 -DHAS_GETDATAPATH=1 -DHAS_GETSOURCEYRESOLUTION=1 -DPDF_RENDER_HAS_TEXT_ONLY=1 -DHAS_OEM_LSTM=1 -std=gnu++11 -I/usr/local/include -fPIC -Wall -g -O2 -c
  leptLines.cc -o leptLines.o
  leptLines.cc:278:14: warning: unused variable 'val' [-Wunused-variable]
  l_uint32 val;
  ^
  leptLines.cc:299:14: warning: unused variable 'val' [-Wunused-variable]
  l_uint32 val;
  ^
  leptLines.cc:377:28: error: no matching function for call to 'pixCountRGBColors'
  return ( ScalarInteger( pixCountRGBColors(pixs) ));
  ^~~~~~~~~~~~~~~~~
  /usr/local/Cellar/leptonica/1.81.1/include/leptonica/allheaders.h:1640:22: note: candidate function not viable: requires 3 arguments, but 1 was provided
  LEPT_DLL extern l_ok pixCountRGBColors ( PIX *pixs, l_int32 factor, l_int32 *pncolors );
  ^
  leptLines.cc:427:1: warning: unused variable 'pixs2' [-Wunused-variable]
  PIX_FUN2(pixSubtract)
  ^
  leptLines.cc:416:10: note: expanded from macro 'PIX_FUN2'
  PIX *pixs2 = GET_REF(r_pixs2, PIX);
  ^
  leptLines.cc:428:1: warning: unused variable 'pixs2' [-Wunused-variable]
  PIX_FUN2(pixAnd)
  ^
  leptLines.cc:416:10: note: expanded from macro 'PIX_FUN2'
  PIX *pixs2 = GET_REF(r_pixs2, PIX);
  ^
  leptLines.cc:429:1: warning: unused variable 'pixs2' [-Wunused-variable]
  PIX_FUN2(pixOr)
  ^
  leptLines.cc:416:10: note: expanded from macro 'PIX_FUN2'
  PIX pixs2 = GET_REF(r_pixs2, PIX);
  ^
  leptLines.cc:430:1: warning: unused variable 'pixs2' [-Wunused-variable]
  PIX_FUN2(pixXor)
  ^
  leptLines.cc:416:10: note: expanded from macro 'PIX_FUN2'
  PIX pixs2 = GET_REF(r_pixs2, PIX);
  ^
  leptLines.cc:493:9: warning: unused variable 'i' [-Wunused-variable]
  int i, j, r, c, depth, row, x, y;
  ^
  leptLines.cc:493:12: warning: unused variable 'j' [-Wunused-variable]
  int i, j, r, c, depth, row, x, y;
  ^
  leptLines.cc:541:15: warning: unused variable 'depth' [-Wunused-variable]
  int i, j, depth, x, y;
  ^
  9 warnings and 1 error generated.
  make: *** [leptLines.o] Error 1
  ERROR: compilation failed for package ‘Rtesseract’
• removing ‘/Library/Frameworks/R.framework/Versions/4.0/Resources/library/Rtesseract’
  Warning message:
  In i.p(...) :
  installation of package ‘/var/folders/3h/1f85xrs966s86gznzxn26ypc0000gn/T//Rtmprl9Zn9/file7aae2c7e6fd8/Rtesseract_0.4-0.tar.gz’ had non-zero exit status**`