configure

#!/bin/bash

configure_options="$*"
platform=unix
arch=macosx64
prefix='/usr/local/caph'
bindir=''
libdir=''
mandir=''
docdir=''
exampledir=''
distdir='../dist'
manext=1
target=byte
debug=''
ocp=''
cc=gcc
cpp=/lib/cpp
ar='ar'
cp='cp'
ln='ln -s'
make='make'
qmake='qmake'
qmake_spec='macx-clang'
ocamldot=ocamldot
vhdl_support=yes
vhdl_comp=ghdl
vhdl_fp_support=no
vhdl_fp_lib='/Users/jserot/Dev/vhdl/fp-altera'
cppstd='c++11'
dotviewer='graphviz'
pgmviewer='toyviewer'
build_gui='yes'
build_doc='yes'

# ocamlversion_min=4.06

# Parse command-line arguments

while : ; do
  case "$1" in
    "") break;;
    -platform|--platform)
        platform=$2; shift;;
    -bindir|--bindir)
        bindir=$2; shift;;
    -libdir|--libdir)
        libdir=$2; shift;;
    -mandir|--mandir)
        mandir=$2; shift;;
    -docdir|--docdir)
        docdir=$2; shift;;
    -prefix|--prefix)
        prefix=$2; shift;;
    -target|--target)
        target=$2; shift;;
    -debug|--debug)
        debug='-g';;
    -ocp|--ocp)
        ocp='ocp-';;
    -cpp|--cpp)
        cpp=$2; shift;;
    -cc|--cc)
        cc=$2; shift;;
    -make|--make)
        make=$2; shift;;
    -qmake|--qmake)
        qmake=$2; shift;;
    -qmake-spec|--qmake-spec)
        qmake_spec=$2; shift;;
    -ar|--ar)
        ar=$2; shift;;
    -no-vhdl-support|--no-vhdl-support)
        vhdl_support='no';;
    -vhdl_fp_support|--vhdl_fp_support)
        vhdl_fp_support='no';;
    -vhdl-fp-lib|--vhdl-fp-lib)
        vhdl_fp_lib=$2; shift;;
    -cppstd|--cppstd)
        cppstd=$2; shift;;
    -dotviewer|--dotviewer)
        dotviewer=$2; shift;;
    -pgmviewer|--pgmviewer)
        pgmviewer=$2; shift;;
    -no-gui|--no-gui)
        build_gui='no';;
    -no-doc|--no-doc)
        build_doc='no';;
    -help|--help)
        cat <<EOF
Usage: configure [options]
Options: [defaults in brackets after descriptions]
  --platform NAME         target platform (unix, macos or win32) [default: unix]
  --prefix PREFIX         install distribution in PREFIX [default: /usr/local/caph]
  --bindir DIR            install  executables in DIR [default: PREFIX/bin]
  --libdir DIR            install libraries in in DIR [default: PREFIX/lib]
  --mandir DIR            install man documentation in DIR [default: PREFIX/man]
  --docdir DIR            install documentation in DIR [default: PREFIX/doc]
  --target TARGET         type of executable for the compiler and tools (byte or native) [default: byte]
  --debug                 compile in debug mode [default: no]
  --ocp                   use ocamlc-ocp,.... instead of ocamlc, ... [default: no]
  --cc NAME               C compiler [default: gcc]
  --ar NAME               C archiver [default: ar]
  --cpp NAME              C pre-processor [default: /lip/cpp]
  --cppstd NAME           C++ standard used when by g++/gcc [default: c++11]
  --make NAME             make command [default: make]
  --qmake NAME            qmake command [default: qmake]
  --qmake-spec NAME       qmake spec name [default: macx-clang]
  --no-vhdl-support       do noy build the VHDL support library [default: build it]
  --vhdl_comp             VHDL compiler [default: ghdl]
  --vhdl-fp-support       activate float support in the VHDL support library [default: no]
  --vhdl-fp-lib           location of the float library for VHDL
  --dotviewer NAME        command name for displaying .dot files [default: graphviz]
  --pgmviewer NAME        command name for displaying .pgm files [default: toyviewer]
  --no-gui                do not build the Qt-based GUI [default: build it]
  --no-doc                do not build the documentation [default: build it]
  --help                  print this message
EOF
	exit 0;;
    *) echo "Unknown option \"$1\"." 1>&2; exit 2;;
  esac
  shift
done


# Sanity checks

case "$platform" in
  unix|win32|macos) ;;
  *) echo "The target platform must be unix, macos or win32." 1>&2; exit 2;;
esac

case "$prefix" in
  ".") ;;
  /*) ;;
   *) echo "The -prefix directory must be absolute." 1>&2; exit 2;;
esac

# Generate the config file

rootdir=`dirname $0`

cd $rootdir
rm -f config
touch config

# Write options

echo "# -*- makefile -*-" >> config
echo "# generated by ./configure $configure_options" >> config
echo "" >> config
cat VERSION >> config
echo "PLATFORM=$platform" >> config
echo "BUILD_GUI=$build_gui" >> config
echo "BUILD_DOC=$build_doc" >> config
echo "" >> config

# Where to install

echo "# Where to install" >> config
echo "PREFIX=$prefix" >> config
case "$bindir" in
  "") echo 'BINDIR=$(PREFIX)/bin' >> config
      bindir="$prefix/bin";;
   *) echo "BINDIR=$bindir" >> config;;
esac
case "$libdir" in
  "") echo 'LIBDIR=$(PREFIX)/lib' >> config
      libdir="$prefix/lib";;
   *) echo "LIBDIR=$libdir" >> config;;
esac
if [ $build_doc == "yes" ]; then
case "$mandir" in
  "") echo 'MANDIR=$(PREFIX)/man' >> config
      mandir="$prefix/man";;
   *) echo "MANDIR=$mandir" >> config;;
esac
echo "MANEXT=$manext" >> config
fi
if [ $build_doc == "yes" ]; then
case "$docdir" in
  "") echo 'DOCDIR=$(PREFIX)/doc' >> config
      docdir="$prefix/doc";;
   *) echo "DOCDIR=$docdir" >> config;;
esac
fi
case "$exampledir" in
  "") echo 'EXAMPLEDIR=$(PREFIX)/examples' >> config
      exampledir="$prefix/examples";;
   *) echo "EXAMPLEDIR=$exampledir" >> config;;
esac
case "$prefix" in
   ".") echo 'CAPH_C_LIB=../../../lib/c' >> config
    echo 'CAPH_CAPH_LIB=../../../lib/caph' >> config
    echo 'CAPH_ETC_LIB=../../../lib/etc' >> config
    echo 'CAPH_SYSC_LIB=../../../lib/systemc' >> config
    echo 'CAPH_VHDL_LIB=../../../lib/vhdl' >> config
    echo 'CAPHC=../../../compiler/caphc' >> config
    echo 'CAPH_TOOLS=../../../tools' >> config;;
   *) echo 'CAPH_C_LIB=$(LIBDIR)/c' >> config
    echo 'CAPH_CAPH_LIB=$(LIBDIR)/caph' >> config
    echo 'CAPH_ETC_LIB=$(LIBDIR)/etc' >> config
    echo 'CAPH_SYSC_LIB=$(LIBDIR)/systemc' >> config
    echo 'CAPH_VHDL_LIB=$(LIBDIR)/vhdl' >> config
    echo 'CAPHC=$(BINDIR)/caphc' >> config
    echo 'CAPH_TOOLS=$(BINDIR)' >> config;;
esac
echo 'ETCDIR=$(PREFIX)/etc' >> config
if [ $build_doc == "yes" ]; then
echo "MANEXT=$manext" >> config
echo 'DOCDIR=$(PREFIX)/doc' >> config
fi
echo "" >> config

# Check for install script
set dummy install; cmd_name=$2
/bin/echo -n "checking for $cmd_name... "
if sh ./etc/searchpath $cmd_name; then
    echo "$cmd_name"
else
    echo "not found"
    { echo "configure: error: cannot find $cmd_name." 1>&2; exit 1; }
fi
install=$cmd_name


# Check for Ocaml compilers

echo "# Program used" >> config
echo >> config

# checking for ocamlc
set dummy ocamlc; compiler_name=${ocp}$2
/bin/echo -n "checking for $compiler_name... "
if sh ./etc/searchpath $compiler_name; then
    echo "$compiler_name"
    compiler=$compiler_name
else
    echo "not found"
    { echo "configure: error: cannot find $compiler_name." 1>&2; exit 1; }
fi
ocamlc=$compiler

# ocamlversion=`$ocamlc -v | sed -n -e 's|.*version* *\(.*\)$|\1|p' `
# echo "ocaml version is $ocamlversion"
# bad_version=`expr "$ocamlversion" \< "$ocamlversion_min"`
# if test "$bad_version" = "1"; then
#     { echo "configure: error: Ocaml >= $ocamlversion_min needed." 1>&2; exit 1; }
# fi

ocamllib=`$ocamlc -where`
echo "ocaml library path is $ocamllib"


# checking for ocamlopt
set dummy ocamlopt; compiler_name=${ocp}$2
/bin/echo -n "checking for $compiler_name... "
if sh ./etc/searchpath $compiler_name; then
    echo "$compiler_name"
    compiler=$compiler_name
else
    echo "not found"
fi
ocamlopt=$compiler

ocamlbest=byte
if [ -n "$ocamlopt" ]; then
  ocamlbest=opt
fi
if [ -z "$target" ]; then
  target=$ocamlbest
fi

echo "TARGET=$target" >> config
echo "" >> config

ocamllib=`$ocamlopt -where`
echo "ocaml library path is $ocamllib"


# checking for ocamldep
set dummy ocamldep; compiler_name=$2
/bin/echo -n "checking for $compiler_name... "
if sh ./etc/searchpath $compiler_name; then
    echo "$compiler_name"
    compiler=$compiler_name
else
    echo "not found"
    { echo "configure: error: cannot find $compiler_name." 1>&2; exit 1; }
fi
ocamldep=$compiler


# checking for ocamllex
set dummy ocamllex; compiler_name=$2
/bin/echo -n "checking for $compiler_name... "
if sh ./etc/searchpath $compiler_name; then
    echo "$compiler_name"
    compiler=$compiler_name
else
    echo "not found"
    { echo "configure: error: cannot find $compiler_name." 1>&2; exit 1; }
fi
ocamllex=$compiler


# checking for ocamlyacc
set dummy ocamlyacc; compiler_name=$2
/bin/echo -n "checking for $compiler_name... "
if sh ./etc/searchpath $compiler_name; then
    echo "$compiler_name"
    compiler=$compiler_name
else
    echo "not found"
    { echo "configure: error: cannot find $compiler_name." 1>&2; exit 1; }
fi
ocamlyacc=$compiler


# checking for ocamlcp
set dummy ocamlcp; compiler_name=$2
/bin/echo -n "checking for $compiler_name... "
if sh ./etc/searchpath $compiler_name; then
    echo "$compiler_name"
    compiler=$compiler_name
else
    echo "not found"
    { echo "configure: error: cannot find $compiler_name." 1>&2; exit 1; }
fi
ocamlcp=$compiler

# checking for c compiler
set dummy $cc; compiler_name=$2
/bin/echo -n "checking for $compiler_name... "
if sh ./etc/searchpath $compiler_name; then
    echo "$compiler_name"
    compiler=$compiler_name
else
    echo "not found"
    { echo "configure: error: cannot find $compiler_name." 1>&2; exit 1; }
fi
cc=$compiler

# checking for c archiver
set dummy $ar; compiler_name=$2
/bin/echo -n "checking for $compiler_name... "
if sh ./etc/searchpath $compiler_name; then
    echo "$compiler_name"
    compiler=$compiler_name
else
    echo "not found"
    { echo "configure: error: cannot find $compiler_name." 1>&2; exit 1; }
fi
ar=$compiler

# checking for ocamldot
set dummy $ocamldot; compiler_name=$2
/bin/echo -n "checking for $compiler_name... "
if sh ./etc/searchpath $compiler_name; then
    echo "$compiler_name"
    ocamldot=$compiler_name
else
    echo "not found"
    { echo "** configure: warning: cannot find $compiler_name." 1>&2; }
    ocamldot=''
fi

# checking for dot viewer 
#set dummy $dotviewer; compiler_name=$2
#/bin/echo -n "checking for program to view .dot files... "
#if test -f "$compiler_name"; then
#    echo "$compiler_name"
#    dotviewer=$compiler_name
#else
#    echo "not found"
#    { echo "** configure: warning: cannot find $compiler_name." 1>&2; }
#    dotviewer=''
#fi

# checking for pgm viewer
#set dummy $pgmviewer; compiler_name=$2
#/bin/echo -n "checking for program to view .pgm files... "
#if test -f "$compiler_name"; then
#    echo "$compiler_name"
#    pgmviewer=$compiler_name
#else
#    echo "not found"
#    { echo "** configure: warning: cannot find $compiler_name." 1>&2; }
#    pgmviewer=''
#fi

# Checking whether sed needs -E argument (FreeBSD non standard ext)
echo "" | sed -E -e "s/{}//" > /dev/null 2>&1
if [ $? -eq 0 ]; then
	esed="sed -E"
else
	esed="sed"
fi

# Finish generated files

echo "INSTALL=$install" >> config
echo "CC=$cc" >> config
echo "CPPSTD=$cppstd" >> config
echo "CPP=$cpp -P" >> config
echo "LN=$ln" >> config
echo "AR=$ar" >> config
echo "CP=cp" >> config
echo "MV=mv" >> config
echo "RM=rm -f" >> config
echo "ESED=$esed" >> config
echo "RMDIR=rm -rf" >> config
echo "MAKE=$make" >> config
echo "QMAKE=$qmake" >> config
echo "QMAKE_SPEC=$qmake_spec" >> config
echo "CAMLC=$ocamlc" >> config
echo "CAMLOPT=$ocamlopt" >> config
echo "CAMLLEX=$ocamllex" >> config
echo "CAMLYACC=$ocamlyacc -v" >> config
if [ -n "$ocamldot" ]; then
echo "CAMLDOT=$ocamldot" >> config
fi
if [ -n "$dotviewer" ]; then
echo "DOTVIEWER=\"$dotviewer\"" >> config
fi
if [ -n "$pgmviewer" ]; then
echo "PGMVIEWER=\"$pgmviewer\"" >> config
fi
echo "CAMLDEP=$ocamldep -pp camlp4o" >> config
echo "CAMLCFLAGS=$debug" >> config
echo "CAMLOPTFLAGS=$debug" >> config
echo "LINKFLAGS=$debug" >> config
echo "CAMLDEPFLAGS=-slash" >> config
if [ $platform == "win32" ]; then
echo "LINKOFLAGS=-cclib -L/C/MinGW/lib" >> config
fi
echo "VHDL_SUPPORT=$vhdl_support" >> config
if [ $vhdl_support == "yes" ]; then
echo "GHDL=$vhdl_comp" >> config
echo "USE_VHDL_FP_LIB=$vhdl_fp_support" >> config
if [ $vhdl_fp_support == "yes" ]; then
echo "VHDL_FP_LIB=$vhdl_fp_lib" >> config
fi
fi
echo

cp ./config ./lib/etc

# Print a summary

echo
echo "** Configuration summary **"
echo
echo "Directories where CAPH will be installed:"
echo "        binaries.................. $bindir"
echo "        libraries................. $libdir/{c,etc,systemc,vhdl,caph}"
if [ $build_doc == "yes" ]; then
echo "        manual pages.............. $mandir (with extension .$manext)"
echo "        documentation............. $docdir"
fi
echo "        examples.................. $exampledir"
if [ -n "$dotviewer" ]; then
echo "Program for viewing .dot files: \"$dotviewer\""
fi
if [ -n "$pgmviewer" ]; then
echo "Program for viewing .pgm files: \"$pgmviewer\""
fi
echo "Build VHDL support library: $vhdl_support"
if [ $vhdl_support == 'yes' ]; then
echo "Request for VHDL float support : $vhdl_fp_support"
if [ $vhdl_fp_support == 'yes' ]; then
echo "Location of VHDL float library: $vhdl_fp_lib"
fi
fi
echo
echo "** CAPH configuration completed successfully **"
echo "** Wrote files ./config and ./lib/etc/config"
echo