Add Makefile and configure script

1 files changed, 190 insertions, 0 deletions

diff --git a/configure b/configure
new file mode 100755
index 0000000..1cf35d3
--- /dev/null
+++ b/configure
@@ -0,0 +1,190 @@
+#!/bin/sh
+# vim:ft=sh:ts=4:sw=4:expandtab
+
+# Configured variables #####################################################
+# Described in following format:
+# name:initial value:type:if exported to makefile:if exported to C header
+# Where type can be just a string (in C in "") or plain. None implies plain.
+CNFS="SGP_VERSION:0.1:string:F:T
+SGP_CONTACT:cynerd@email.cz:string:F:T
+PREFIX:/usr/local:string:T:F
+MOD_LUA:true::T:F
+MOD_PYTHON:true::T:F
+DEBUG:false::T:F
+CFLAGS:::T:F
+LFLAGS:::T:F"
+############################################################################
+
+print_help() {
+	echo "Usage: ./configure [OPTION]..."
+	echo "SGP configuration script. Execute this script to configure project"
+	echo "and prepare it for building."
+	echo
+	echo "  --help, -h              Give this help list"
+	echo "  --prefix=PATH           Set PATH as installation prefix."
+	echo "                          In default /usr/local"
+	echo "  --debug, -d             Enable development features."
+	echo "  --release, -r           Disable development features for project."
+	echo "  --dep-check             Force depencency check for this machine."
+	echo 
+	echo "  --mod-lua-enable, --mod-lua-disable"
+	echo "	Set if Lua module should be compiled. In default is enabled."
+	echo "  --mod-python-enable, --mod-python-disable"
+	echo "	Set if Python module should be compiled. In default is enabled."
+	echo
+	echo "Environment variables:"
+	echo "  CROSS_COMPILE           Prefix for compilation tools."
+	echo
+	echo "SGP version $SGP_VERSION"
+	echo "Report bugs to <$SGP_CONTACT>."
+}
+
+CONFIG_FILE=.config
+CONFIGURED_FILE=.configured # TODO
+
+# TODO support for values with escaped colons
+# Load default configuration
+eval `echo "$CNFS" | grep -o -E '^[^:]*:[^:]*' | sed 's/:/=/'`
+
+# Load existing configuration
+if [ -f "$CONFIG_FILE" ]; then
+	source ./"$CONFIG_FILE"
+fi
+
+# Requested operation.
+# c - Configure, default configuration behavior
+# m - Prints output for Makefile
+# h - Prints C header file (machine validation is skipped)
+OP=c
+
+# Parse arguments
+while [ "$#" -gt 0 ]; do
+	case $1 in
+		-h|-?|--help)
+			print_help
+			exit 0
+			;;
+		--prefix=*)
+			# TODO
+			;;
+		-d|--debug)
+			DEBUG=True
+			;;
+		-r|--release)
+			DEBUG=False
+			;;
+		--mod-lua-enable)
+			MOD_LUA=true
+			;;
+		--mod-lua-disable)
+			MOD_LUA=false
+			;;
+		--mod-python-enable)
+			MOD_PYTHON=true
+			;;
+		--mod-python-disable)
+			MOD_PYTHON=false
+			;;
+		--op-makefile)
+			OP=m
+			;;
+		--op-h)
+			OP=h
+			;;
+		*)
+			echo Unknown option $1 1>&2
+			exit 2
+			;;
+	esac
+	shift
+done
+
+# Basically save configuration to file
+configure() {
+	echo "# SGP configuration file" > "$CONFIG_FILE"
+	echo "# Please do not edit this file directly." >> "$CONFIG_FILE"
+	echo "$CNFS" | while read L; do
+		NAME=`echo "$L" | grep -o -E '^[^:]*'`
+		eval "VALUE=\$$NAME"
+		echo "$NAME=$VALUE" >> "$CONFIG_FILE"
+	done
+	echo "Configuration written to \"$CONFIG_FILE\""
+}
+
+# Generate Makefile and configure them if they doesn't exists in PWD
+doext() {
+	if [ -f "Makefile" ] || [ -f configure ]; then
+		return
+	fi
+	SGPDIR=`dirname "$0"`
+
+	echo "# This is external Makefile for SGP." > Makefile
+	echo "export CROSS_COMPILE=$CROSS_COMPILE" >> Makefile
+	echo >> Makefile
+	echo "SGP_PATH = $SGPDIR" >> Makefile
+	echo >> Makefile
+	echo "MAKEARGS := -C \"\$(SGP_PATH)\"" >> Makefile
+	echo "MAKEARGS += O=\"\$(shell pwd)\"" >> Makefile
+	echo >> Makefile
+	echo "MAKEFLAGS += --no-print-directory" >> Makefile
+	echo >> Makefile
+	echo "Q = @" >> Makefile
+	echo ".PHONY: all \$(MAKECMDGOALS)" >> Makefile
+	echo "all \$(MAKECMDGOALS):" >> Makefile
+	echo "	\$(Q)\$(MAKE) \$(MAKEARGS) \$@" >> Makefile
+
+	echo Created local Makefile
+
+	echo "# This is external configure script for SGP." > configure
+	echo "SGP_PATH=$SGPDIR" >> configure
+	echo "\$SGP_PATH/configure \$@" >> configure
+	chmod +x configure
+
+	echo Created local configure script
+}
+
+makefile() {
+	echo "$CNFS" | while read L; do
+		if [ `echo $L | awk -F ':' '{ print $4 }'` != "T" ]; then
+			continue
+		fi
+		NAME=`echo "$L" | grep -o -E '^[^:]*'`
+		eval "VALUE=\$$NAME"
+		echo "$NAME = $VALUE"
+	done
+}
+
+cheader() {
+	echo "$CNFS" | while read L; do
+		if [ `echo $L | awk -F ':' '{ print $5 }'` != "T" ]; then
+			continue
+		fi
+		NAME=`echo "$L" | grep -o -E '^[^:]*'`
+		eval "VALUE=\$$NAME"
+		if [ "`echo $L | awk -F ':' '{ print $3 }'`" = "string" ]; then
+			echo "#define $NAME \"$VALUE\""
+		else
+			echo "#define $NAME $VALUE"
+		fi
+	done
+}
+
+validate() {
+	echo -n
+	# TODO check dependencies and programs
+}
+
+case $OP in
+	c)
+		validate
+		doext
+		configure
+		;;
+	m)
+		validate
+		makefile
+		;;
+	h)
+		cheader
+		;;
+esac