configure

#!/bin/sh
#
# pfamannot
# Protein Family Annotator
#
# configure
# Copyright (c) 2020 Jan Hamalčík
#
# Generates Makefile
#

version_major=0
version_minor=1
version_patch=5

echo "Welcome to pfamannot - Protein Family Annotator! Version ${version_major}.${version_minor}.${version_patch}"
echo "Configuring..."
echo

prefix=/usr/local
debugsym=false

for arg in $@;
do
  case "$arg" in
    --prefix=*)
      prefix=`echo $arg | sed 's/--prefix=//'`
      ;;

    --enable-debug)
      debugsym=true
      ;;

    --disable-debug)
      debugsym=false
      ;;

    --help)
      echo 'Usage: ./configure [options]'
      echo 'Options:'
      echo '  --prefix=<path>: Installation prefix (DEFAULT = "/usr/local")'
      echo '  --enable-debug: Include debug symbols'
      echo '  --disable-debug: Do not include debug symbols (DEFAULT)'
      echo 'All invalid options are silently ignored.'
      exit 0
      ;;
  esac
done

##################################
# Get cpp info

cpp -v /dev/null -o /dev/null > cpp_info 2>&1
include_path=""
library_path=""
inside_include=false
while IFS= read -r line;
do
  if $inside_include;
  then
    if [ "`echo $line`" = "End of search list." ] ;
    then
      inside_include=false
      continue
    fi
    path="`echo $line`"
    include_path="${path}:${include_path}"
  else
    if [ "$line" = "#include <...> search starts here:" ] ;
    then
      inside_include=true
    elif [ "`echo $line | head -c13`" = "LIBRARY_PATH=" ] ;
    then
      library_path="`echo $line | tail -c+14`"
    fi
  fi
done < cpp_info
rm cpp_info

if [ "$include_path" = "" ] ;
then
  include_path="/usr/include:/usr/local/include"
else
  include_path="`echo $include_path | rev | tail -c+2 | rev`"
fi

if [ "$library_path" = "" ] ;
then
  library_path="/usr/lib:/usr/local/lib"
fi

##################################
# Check for curl

printf "Checking for curl..."

curl_exists=false
include_curl_exists=false
library_curl_exists=false

IFS=:
for path in $include_path;
do
  if [ -f "${path}/curl/curl.h" ];
  then
    include_curl_exists=true
    break
  fi
done

for path in $library_path;
do
  for file in ${path}/libcurl.*;
  do
    if [ -f "$file" ];
    then
      library_curl_exists=true
      break
    fi
  done
  if $library_curl_exists;
  then
    break
  fi
done
IFS=$'\n'

if $include_curl_exists && $library_curl_exists;
then
  curl_exists=true
  echo " -> yes"
else
  echo " -> no"
fi

##################################
# Check for zlib

printf "Checking for zlib..."

zlib_exists=false
include_zlib_exists=false
library_zlib_exists=false

IFS=:
for path in $include_path;
do
  if [ -f "${path}/zlib.h" ];
  then
    include_zlib_exists=true
    break
  fi
done

for path in $library_path;
do
  for file in ${path}/libz.*;
  do
    if [ -f "$file" ];
    then
      library_zlib_exists=true
      break
    fi
  done
  if $library_zlib_exists;
  then
    break
  fi
done
IFS=$'\n'

if $include_zlib_exists && $library_zlib_exists;
then
  zlib_exists=true
  echo " -> yes"
else
  echo " -> no"
fi

##################################
# Create pfamannotConfig.hpp

awk -v NEWFILENAME="pfamannotConfig.hpp" -v MAJOR="$version_major" -v MINOR="$version_minor" -v PATCH="$version_patch" -v HOME="$HOME" '{
  sub(/pfamannotConfig.hpp.in/, NEWFILENAME);
  sub(/§major§/, MAJOR);
  sub(/§minor§/, MINOR);
  sub(/§patch§/, PATCH);
  sub(/§home§/, HOME);
  print;
}' source/pfamannotConfig.hpp.in > source/pfamannotConfig.hpp

##################################
# Create Makefile

echo
echo 'Generating makefile...'

# Header
echo '# pfamannot' > Makefile
echo '# Protein Family Annotator' >> Makefile
echo '#' >> Makefile
echo '# Makefile' >> Makefile
echo '# Copyright (c) 2020 Jan Hamalčík' >> Makefile
echo '#' >> Makefile
echo '# Makefile for pfamannot' >> Makefile
echo '#' >> Makefile
echo >> Makefile

# Body
echo 'PREFIX =' $prefix >> Makefile
if $debugsym;
then
  echo 'DEBUG = -g3' >> Makefile
else
  echo 'DEBUG =' >> Makefile
fi
if $curl_exists;
then
  echo 'CURL_EXISTS = true' >> Makefile
else
  echo 'CURL_EXISTS = false' >> Makefile
fi
if $zlib_exists;
then
  echo 'ZLIB_EXISTS = true' >> Makefile
else
  echo 'ZLIB_EXISTS = false' >> Makefile
fi
tail -n+10 Makefile.in >> Makefile

echo
echo 'Configuration complete, type make to build.'