#!/bin/sh

# Note: add -v or -x option to /bin/sh line above to debug any problems

# Fix permissions for test files that had to be made readable so tar
# could access them, compile all C code needed by EiffelWeasel, build
# library eweasel.a, compile EiffelWeasel itself (finalize it),
# compile the generated C code and copy the executable to:
#	
#	$EWEASEL/spec/$ISE_PLATFORM/bin/eweasel

# Check command line arguments

keep=0
if [ $# -gt 0 ]; then
	arg=$1
	if [ "$arg" != "keep" -a "$arg" != "-keep" ] ; then
		echo "Usage: compile_eweasel [ -keep ]"
		exit 1
	fi
	keep=1
fi

# Check that required environment variables are set and are valid

if [ "$EWEASEL" = "" ] ; then
	echo "Environment variable \$EWEASEL is not set"
	echo "Please set it to eweasel root directory"
	exit 1
fi
if [ ! -d "$EWEASEL" ] ; then
	echo "Value of \$EWEASEL environment variable is not a directory"
	echo "\$EWEASEL = $EWEASEL"
	exit 1
fi

if [ "$ISE_EIFFEL" = "" ] ; then
	echo "Environment variable \$ISE_EIFFEL is not set"
	exit 1
fi
if [ ! -d "$ISE_EIFFEL" ] ; then
	echo "Value of \$ISE_EIFFEL environment variable is not a directory"
	echo "\$ISE_EIFFEL = $ISE_EIFFEL"
	exit
fi

if [ "$ISE_PLATFORM" = "" ] ; then
	echo "Environment variable \$ISE_PLATFORM is not set"
	exit
fi
if [ ! -d "$EWEASEL/spec" ] ; then
	mkdir $EWEASEL/spec
fi
if [ ! -d "$EWEASEL/spec/$ISE_PLATFORM" ] ; then
	mkdir $EWEASEL/spec/$ISE_PLATFORM
fi
if [ ! -d "$EWEASEL/spec/$ISE_PLATFORM/bin" ] ; then
	mkdir $EWEASEL/spec/$ISE_PLATFORM/bin
fi
if [ ! -d "$EWEASEL/spec/$ISE_PLATFORM/project" ] ; then
	mkdir $EWEASEL/spec/$ISE_PLATFORM/project
fi
if [ ! -d "$EWEASEL/spec/$ISE_PLATFORM/lib" ] ; then
	mkdir $EWEASEL/spec/$ISE_PLATFORM/lib
fi

# Set up parameters to make script more readable

. $ISE_EIFFEL/studio/spec/$ISE_PLATFORM/include/config.sh

fixperm="chmod a-rwx"
announce="echo Compiling"
ecc="$cc $ccflags $optimize $warning_level -I$ISE_EIFFEL/studio/spec/$ISE_PLATFORM/include -I$EWEASEL/source/os/Clib -c"
elib="ld $ldflags -r -o"
rm="rm"

EWEASEL_PLATFORM="$EWEASEL/spec/$ISE_PLATFORM"
export EWEASEL_PLATFORM

# Check existence of Eiffel compiler

version=`ec -version`
echo "Using $version"

# Compile C code

cd $EWEASEL/source/utilities/Clib
$announce mem_alloc.c
$ecc mem_alloc.c

cd $EWEASEL/source/os/Clib
$announce timer.c
$ecc timer.c
$announce unix_os.c
$ecc unix_os.c

# Build libraries (.a files)

cd $EWEASEL_PLATFORM/lib
echo "Building library $EWEASEL_PLATFORM/lib/eweasel.a"
$elib eweasel.a $EWEASEL/source/*/Clib/*.o

# Compile EiffelWeasel (Eiffel and C compilations)

cd $EWEASEL_PLATFORM/project
echo "Compiling EiffelWeasel"
ec -config $EWEASEL/compilation/eweasel.ecf -finalize -c_compile -project_path $EWEASEL_PLATFORM/project

# Check compilation results and copy executable to bin directory

EWEASEL_BINARY="$EWEASEL_PLATFORM/project/EIFGENs/eweasel/F_code/eweasel"
export EWEASEL_BINARY

if [ ! -f "$EWEASEL_BINARY" ] ; then
	echo "EiffelWeasel compilation failed"
	echo "File $EWEASEL_BINARY not found"
	exit
fi

cp $EWEASEL_BINARY $EWEASEL_PLATFORM/bin

if [ $keep -eq 0 ] ; then
	echo "Deleting .o files"
	$rm  $EWEASEL/source/*/Clib/*.o
	echo "Deleting $EWEASEL_PLATFORM/project/EIFGENs"
	cd $EWEASEL_PLATFORM/project
	$rm -r EIFGENs
fi

echo "EiffelWeasel installation completed for platform $ISE_PLATFORM"
exit