#!/bin/sh
# On 2013-05-14 Arnold wrote in an e-mail:

# <QUOTE)
# I think that using CMake would be more palatable if there is also a simple
# configure wrapper that can be used by people who build distributions. This would
# mean things like
# 
# 	configure CC=XXXX   # XXXX in { gcc, clang, tcc } or native platform cc
# 	configure --prefix=/path/to/install
# 
# And the few other current configure options like --with-whiny-user-strftime,
# --disable-nls, etc.  I don't know if we need all the standard configure options,
# but I do want the ones I've added in configure.ac.
# </QUOTE)


# Anyone using this script still needs an out-of-source build directory.
if [ -f CMakeLists.txt ] ; then
  echo "Your current working directory contains a file CMakeLists.txt, indicating"
  echo "that this is a source directory. Create a new directory elsewhere, change into"
  echo "this empty directory and try again."
  echo "  mkdir build"
  echo "  cd build"
  echo "  ../$0"
  exit 1
fi

if ! [ -f ../CMakeLists.txt ] ; then
  echo "The directory above your current working directory does not contain a file CMakeLists.txt."
  echo "This script will run only if you are one level below the source directory."
  exit 1
fi

# TODO: Evaluate all the options and translate the options into CMake variables.
CC=$( which cc )
PREFIX=""

for p in $@
do
  if [ ${p:0:3} = "CC=" ]; then CC=${p:3}; fi
  if [ ${p:0:9} = "--prefix=" ]; then PREFIX=-DCMAKE_INSTALL_PREFIX=${p:9}; fi
done
CC=$( which $CC )

rm -f Toolchain.cmake
(
  echo "set(CMAKE_C_COMPILER $CC)"
  echo "set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)"
  echo "set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)"
  echo "set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)"
) > Toolchain.cmake

# TODO: Allow the build directory to be in other places.
# A parameter is needed to pass the value.
cmake ${PREFIX} -DCMAKE_TOOLCHAIN_FILE=Toolchain.cmake ..