diff --git a/.gitignore b/.gitignore
index 5aa8cb7849..4bf58b05c1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,6 +23,9 @@ bundles/*
 docs/aidocs/*
 docs/gamedocs/*
 docs/source/*
+.kdev4
+.kdev4/*
+*.kdev4
 media/openttd.desktop
 media/openttd.desktop.install
 objs/*
diff --git a/.hgignore b/.hgignore
index debab32b0e..17b2557f80 100644
--- a/.hgignore
+++ b/.hgignore
@@ -13,6 +13,9 @@ config.pwd
 docs/aidocs/*
 docs/gamedocs/*
 docs/source/*
+.kdev4
+.kdev4/*
+*.kdev4
 Makefile
 Makefile.am
 Makefile.bundle
diff --git a/projects/gen-kdev4.sh b/projects/gen-kdev4.sh
new file mode 100755
index 0000000000..4ea5dbc2a8
--- /dev/null
+++ b/projects/gen-kdev4.sh
@@ -0,0 +1,203 @@
+#!/bin/sh
+
+# $Id$
+
+# This file is part of OpenTTD.
+# OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
+# OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+
+# echo without interpretation of backslash escapes and without
+# adding newline at the end - just the string as it is
+rawprint()
+{
+	printf '%s' "$@"
+}
+
+encode_dword()
+{
+	printf '\x%02x' \
+		`expr $1 / 16777216 % 256` \
+		`expr $1 / 65536    % 256` \
+		`expr $1 / 256      % 256` \
+		`expr $1            % 256`
+}
+
+encode_string()
+{
+	# turn string into UTF-16 and hexdump it
+	hex_utf16=`rawprint "$1" | iconv -t UTF-16BE | od -t x1 -A n | tr -d -c '[:xdigit:]'`;
+
+	encode_dword `rawprint "$hex_utf16" | wc -m | xargs -I {} expr {} / 2` # length = num hex digits / 2
+	rawprint "$hex_utf16" | sed 's/../\\x&/g' # put '\x' prefix before every pair of digits
+}
+
+encode_single_define()
+{
+	encode_string `rawprint "$1" | grep -o '^[^=]*'` # everything before '='
+	rawprint '\x00\x00\x00\n\x00'
+	encode_string `rawprint "$1" | sed 's/^[^=]*=\?//'` # everything after '='
+}
+
+# $1 - newline-separated list of defines
+encode_defines()
+{
+	# add some fixed defines and discard empty lines from the tail
+	defines=`printf 'va_list\nva_args\n%s' "$1"`
+
+	# count lines (no newline at the end so add one)
+	encode_dword `printf '%s\n' "$defines" | wc -l`
+
+	while [ -n "$defines" ]; do
+		encode_single_define `rawprint "$defines" | head -n 1`
+		defines=`rawprint "$defines" | tail -n +2`
+	done
+}
+
+encode_includes()
+{
+	encode_dword 3 # number of custom includes
+	encode_string "$1/src/stdafx.h"
+	encode_string "$1/objs/lang"
+	encode_string "$1/objs/setting"
+}
+
+# escape with a backslash (\) characters special to the sed replace string: \ &
+# also escape our custom filed separator that we will be using in sed: @
+escape_sed_special()
+{
+	sed -e 's/[\&@]/\\&/g'
+}
+
+
+
+PROJECT_DIR=`pwd`
+DIR_NAME=`pwd | xargs -0 basename`
+
+USAGE_TEXT='Usage:
+
+	projects/gen-kdev4 [PROJECT_NAME|-h|--help]
+
+PROJECT_NAME is the name of the project that will be displayed in KDevelop.
+Before executing, cd into OpenTTD folder and run ./configure script.
+
+-h, --help
+	print help and exit'
+
+case "$# $1" in
+	'1 -h' | '1 --help') printf 'Generate OpenTTD project files for KDevelop 4+\n\n%s\n' "$USAGE_TEXT"; exit 0;;
+	1*)                  PROJECT_NAME="$1";;
+	0*)                  PROJECT_NAME="$DIR_NAME";;
+	*)                   printf 'Wrong arguments given. %s\n' "$USAGE_TEXT" >&2; exit 1;;
+esac
+
+CFLAGS=`grep '^using CFLAGS\.\.\.' config.log 2>/dev/null`
+if [ -z "$CFLAGS" ]; then
+	echo "OpenTTD config.log not found" >&2
+	echo "cd into OpenTTD first and run 'configure'" >&2
+	exit 1
+fi
+DEFINES=`eval "printf '%s\n' $CFLAGS" | grep '^\-D' | cut -c3-`
+
+PROJECT_NAME_SED=s@!!PROJECT_NAME!!@`rawprint "$PROJECT_NAME" | escape_sed_special`@g
+PROJECT_DIR_SED=s@!!PROJECT_DIR!!@`rawprint "$PROJECT_DIR" | escape_sed_special`@g
+CUSTOM_DEFINES_SED=s@!!CUSTOM_DEFINES!!@`encode_defines "$DEFINES" | escape_sed_special`@g
+CUSTOM_INCLUDES_SED=s@!!CUSTOM_INCLUDES!!@`encode_includes "$PROJECT_DIR" | escape_sed_special`@g
+
+mkdir -p .kdev4
+
+sed -e "$PROJECT_NAME_SED" \
+	>"$PROJECT_DIR/$DIR_NAME.kdev4" \
+	<< "EOF"
+[Project]
+Manager=KDevCustomMakeManager
+Name=!!PROJECT_NAME!!
+EOF
+
+sed -e "$PROJECT_DIR_SED" -e "$CUSTOM_DEFINES_SED" -e "$CUSTOM_INCLUDES_SED" \
+	>"$PROJECT_DIR/.kdev4/$DIR_NAME.kdev4" \
+	<< "EOF"
+[CustomDefinesAndIncludes][ProjectPath0]
+Defines=!!CUSTOM_DEFINES!!
+Includes=!!CUSTOM_INCLUDES!!
+Path=.
+
+[Defines And Includes][Compiler]
+Name=GCC
+Path=gcc
+Type=GCC
+
+[Filters]
+size=10
+
+[Filters][0]
+inclusive=0
+pattern=.*
+targets=3
+
+[Filters][1]
+inclusive=0
+pattern=.svn
+targets=2
+
+[Filters][2]
+inclusive=0
+pattern=.hg
+targets=2
+
+[Filters][3]
+inclusive=0
+pattern=.git
+targets=2
+
+[Filters][4]
+inclusive=0
+pattern=*.rej
+targets=1
+
+[Filters][5]
+inclusive=0
+pattern=*.orig
+targets=1
+
+[Filters][6]
+inclusive=0
+pattern=*~
+targets=1
+
+[Filters][7]
+inclusive=0
+pattern=.*.kate-swp
+targets=1
+
+[Filters][8]
+inclusive=0
+pattern=.*.swp
+targets=1
+
+[Filters][9]
+inclusive=0
+pattern=/objs
+targets=2
+
+[Launch]
+Launch Configurations=Launch Configuration 0
+
+[Launch][Launch Configuration 0]
+Configured Launch Modes=execute
+Configured Launchers=nativeAppLauncher
+Name=Launch OpenTTD\s
+Type=Native Application
+
+[Launch][Launch Configuration 0][Data]
+Arguments=-d 1
+Dependencies=@Variant(\x00\x00\x00\t\x00\x00\x00\x00\x00)
+Dependency Action=Nothing
+EnvironmentGroup=
+Executable=file://!!PROJECT_DIR!!/bin/openttd
+External Terminal=konsole --noclose --workdir %workdir -e %exe
+Project Target=
+Use External Terminal=false
+Working Directory=file://!!PROJECT_DIR!!/bin
+isExecutable=true
+EOF