Mercurial > hg > ascension / changeset

changeset

initial commit

Fri, 06 Oct 2023 21:21:10 +0200

author
Mike Becker <universe@uap-core.de>
date
Fri, 06 Oct 2023 21:21:10 +0200
changeset 0
593b60458157
child 1
e3113d4e2fc0

initial commit

.hgignore file | annotate | diff | comparison | revisions
DEPENDENCIES file | annotate | diff | comparison | revisions
LICENSE file | annotate | diff | comparison | revisions
Makefile file | annotate | diff | comparison | revisions
configure file | annotate | diff | comparison | revisions
make/cc.mk file | annotate | diff | comparison | revisions
make/configure.vm file | annotate | diff | comparison | revisions
make/project.xml file | annotate | diff | comparison | revisions
make/toolchain.sh file | annotate | diff | comparison | revisions
make/uwproj.xsd file | annotate | diff | comparison | revisions
src/Makefile file | annotate | diff | comparison | revisions
src/ascension/core.h file | annotate | diff | comparison | revisions
src/ascension/utils.h file | annotate | diff | comparison | revisions
src/core.c file | annotate | diff | comparison | revisions
test/Makefile file | annotate | diff | comparison | revisions
test/sandbox.c file | annotate | diff | comparison | revisions 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.hgignore	Fri Oct 06 21:21:10 2023 +0200
@@ -0,0 +1,4 @@
+.idea/
+nbproject/
+build/
+config.mk
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DEPENDENCIES	Fri Oct 06 21:21:10 2023 +0200
@@ -0,0 +1,3 @@
+Fedora: dnf install SDL2-devel SDL2_ttf-devel glew-devel
+Arch: pacman -Sy sdl2 sdl2_ttf glew pkgconf
+FreeBSD: pkg install sdl2 sdl2_ttf glew pkgconf
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LICENSE	Fri Oct 06 21:21:10 2023 +0200
@@ -0,0 +1,23 @@
+Copyright 2023 Mike Becker. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+  1. Redistributions of source code must retain the above copyright
+     notice, this list of conditions and the following disclaimer.
+
+  2. Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in the
+     documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Makefile	Fri Oct 06 21:21:10 2023 +0200
@@ -0,0 +1,51 @@
+# Copyright 2023 Mike Becker. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+#   1. Redistributions of source code must retain the above copyright
+#      notice, this list of conditions and the following disclaimer.
+#
+#   2. Redistributions in binary form must reproduce the above copyright
+#      notice, this list of conditions and the following disclaimer in the
+#      documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+all: build/test/sandbox
+
+build/test/sandbox: build/test build/lib/libascension.a config.mk FORCE
+	@cd test && $(MAKE)
+
+build/lib/libascension.a: build/lib config.mk FORCE
+	@cd src && $(MAKE)
+
+build/test:
+	mkdir -p build/test
+
+build/lib:
+	mkdir -p build/lib
+
+clean:
+	rm -f -R build
+
+install:
+	@echo "Not supported at the moment"
+
+config.mk:
+	@echo "create config"
+	@./configure
+
+FORCE:
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/configure	Fri Oct 06 21:21:10 2023 +0200
@@ -0,0 +1,423 @@
+#!/bin/sh
+
+# create temporary directory
+TEMP_DIR=".tmp-`uname -n`"
+rm -Rf "$TEMP_DIR"
+if mkdir -p "$TEMP_DIR"; then
+    :
+else
+    echo "Cannot create tmp dir $TEMP_DIR"
+    echo "Abort"
+    exit 1
+fi
+touch "$TEMP_DIR/options"
+touch "$TEMP_DIR/features"
+
+# define standard variables
+PREFIX=/usr
+EPREFIX=
+BINDIR=
+SBINDIR=
+LIBDIR=
+LIBEXECDIR=
+DATADIR=
+SYSCONFDIR=
+SHAREDSTATEDIR=
+LOCALSTATEDIR=
+INCLUDEDIR=
+INFODIR=
+MANDIR=
+
+# custom variables
+
+# features
+
+# clean abort
+abort_configure()
+{
+    rm -Rf "$TEMP_DIR"
+    exit 1
+}
+
+# help text
+printhelp()
+{
+    echo "Usage: $0 [OPTIONS]..."
+    cat << __EOF__
+Installation directories:
+  --prefix=PREFIX         path prefix for architecture-independent files
+                          [/usr]
+  --exec-prefix=EPREFIX   path prefix for architecture-dependent files
+                          [PREFIX]
+
+  --bindir=DIR            user executables [EPREFIX/bin]
+  --sbindir=DIR           system admin executables [EPREFIX/sbin]
+  --libexecdir=DIR        program executables [EPREFIX/libexec]
+  --sysconfdir=DIR        system configuration files [PREFIX/etc]
+  --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
+  --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --libdir=DIR            object code libraries [EPREFIX/lib]
+  --includedir=DIR        C header files [PREFIX/include]
+  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
+  --datadir=DIR           read-only architecture-independent data [DATAROOTDIR]
+  --infodir=DIR           info documentation [DATAROOTDIR/info]
+  --mandir=DIR            man documentation [DATAROOTDIR/man]
+
+__EOF__
+}
+
+#
+# parse arguments
+#
+BUILD_TYPE="default"
+for ARG in "$@"
+do
+    case "$ARG" in
+        "--prefix="*)         PREFIX=${ARG#--prefix=} ;;
+        "--exec-prefix="*)    EPREFIX=${ARG#--exec-prefix=} ;;
+        "--bindir="*)         BINDIR=${ARG#----bindir=} ;;
+        "--sbindir="*)        SBINDIR=${ARG#--sbindir=} ;;
+        "--libdir="*)         LIBDIR=${ARG#--libdir=} ;;
+        "--libexecdir="*)     LIBEXECDIR=${ARG#--libexecdir=} ;;
+        "--datadir="*)        DATADIR=${ARG#--datadir=} ;;
+        "--sysconfdir="*)     SYSCONFDIR=${ARG#--sysconfdir=} ;;
+        "--sharedstatedir="*) SHAREDSTATEDIR=${ARG#--sharedstatedir=} ;;
+        "--localstatedir="*)  LOCALSTATEDIR=${ARG#--localstatedir=} ;;
+        "--includedir="*)     INCLUDEDIR=${ARG#--includedir=} ;;
+        "--infodir="*)        INFODIR=${ARG#--infodir=} ;;
+        "--mandir"*)          MANDIR=${ARG#--mandir} ;;
+        "--help"*) printhelp; abort_configure ;;
+        "--debug")           BUILD_TYPE="debug" ;;
+        "--release")         BUILD_TYPE="release" ;;
+        "-"*) echo "unknown option: $ARG"; abort_configure ;;
+    esac
+done
+
+
+# set dir variables
+: ${EPREFIX:="$PREFIX"}
+: ${BINDIR:="$EPREFIX/bin"}
+: ${SBINDIR:="$EPREFIX/sbin"}
+: ${LIBDIR:="$EPREFIX/lib"}
+: ${LIBEXECDIR:="$EPREFIX/libexec"}
+: ${DATADIR:="$PREFIX/share"}
+: ${SYSCONFDIR:="$PREFIX/etc"}
+: ${SHAREDSTATEDIR:="$PREFIX/com"}
+: ${LOCALSTATEDIR:="$PREFIX/var"}
+: ${INCLUDEDIR:="$PREFIX/include"}
+: ${INFODIR:="$PREFIX/info"}
+: ${MANDIR:="$PREFIX/man"}
+
+# Test for availability of pkg-config
+PKG_CONFIG=`command -v pkg-config`
+: ${PKG_CONFIG:="false"}
+
+# Simple uname based platform detection
+# $PLATFORM is used for platform dependent dependency selection
+OS=`uname -s`
+OS_VERSION=`uname -r`
+printf "detect platform... "
+if [ "$OS" = "SunOS" ]; then
+    PLATFORM="solaris sunos unix svr4"
+fi
+if [ "$OS" = "Linux" ]; then
+    PLATFORM="linux unix"
+fi
+if [ "$OS" = "FreeBSD" ]; then
+    PLATFORM="freebsd bsd unix"
+fi
+if [ "$OS" = "Darwin" ]; then
+    PLATFORM="macos osx bsd unix"
+fi
+if echo "$OS" | grep -i "MINGW" > /dev/null; then
+    PLATFORM="windows mingw"
+fi
+: ${PLATFORM:="unix"}
+
+PLATFORM_NAME=`echo "$PLATFORM" | cut -f1 -d' ' -`
+echo "$PLATFORM_NAME"
+
+isplatform()
+{
+    for p in $PLATFORM
+    do
+        if [ "$p" = "$1" ]; then
+            return 0
+        fi
+    done
+    return 1
+}
+notisplatform()
+{
+    for p in $PLATFORM
+    do
+        if [ "$p" = "$1" ]; then
+            return 1
+        fi
+    done
+    return 0
+}
+
+
+# generate vars.mk
+cat > "$TEMP_DIR/vars.mk" << __EOF__
+PREFIX="$PREFIX"
+EPREFIX="$EPREFIX"
+BINDIR="$BINDIR"
+SBINDIR="$SBINDIR"
+LIBDIR="$LIBDIR"
+LIBEXECDIR="$LIBEXECDIR"
+DATADIR="$DATADIR"
+SYSCONFDIR="$SYSCONFDIR"
+SHAREDSTATEDIR="$SHAREDSTATEDIR"
+LOCALSTATEDIR="$LOCALSTATEDIR"
+INCLUDEDIR="$INCLUDEDIR"
+INFODIR="$INFODIR"
+MANDIR="$MANDIR"
+__EOF__
+sort -u -o "$TEMP_DIR/vars.mk" "$TEMP_DIR/vars.mk"
+
+
+# toolchain detection utilities
+. make/toolchain.sh
+
+#
+# DEPENDENCIES
+#
+
+# check languages
+lang_c=
+lang_cpp=
+if detect_c_compiler ; then
+    lang_c=1
+fi
+
+# create buffer for make variables required by dependencies
+echo > "$TEMP_DIR/make.mk"
+
+test_pkg_config()
+{
+    if "$PKG_CONFIG" --exists "$1" ; then :
+    else return 1 ; fi
+    if [ -z "$2" ] || "$PKG_CONFIG" --atleast-version="$2" "$1" ; then :
+    else return 1 ; fi
+    if [ -z "$3" ] || "$PKG_CONFIG" --exact-version="$3" "$1" ; then :
+    else return 1 ; fi
+    if [ -z "$4" ] || "$PKG_CONFIG" --max-version="$4" "$1" ; then :
+    else return 1 ; fi
+    return 0
+}
+
+dependency_error_sdl2_ttf()
+{
+    printf "checking for sdl2_ttf... "
+    # dependency sdl2_ttf
+    while true
+    do
+        if [ -z "$PKG_CONFIG" ]; then
+            break
+        fi
+        if test_pkg_config "SDL2_ttf" "" "" "" ; then
+            TEMP_CFLAGS="$TEMP_CFLAGS `"$PKG_CONFIG" --cflags SDL2_ttf`"
+            TEMP_LDFLAGS="$TEMP_LDFLAGS `"$PKG_CONFIG" --libs SDL2_ttf`"
+        else
+            break
+        fi
+        echo yes
+        return 1
+    done
+
+    echo no
+    return 0
+}
+dependency_error_sdl2()
+{
+    printf "checking for sdl2... "
+    # dependency sdl2
+    while true
+    do
+        if [ -z "$PKG_CONFIG" ]; then
+            break
+        fi
+        if test_pkg_config "sdl2" "" "" "" ; then
+            TEMP_CFLAGS="$TEMP_CFLAGS `"$PKG_CONFIG" --cflags sdl2`"
+            TEMP_LDFLAGS="$TEMP_LDFLAGS `"$PKG_CONFIG" --libs sdl2`"
+        else
+            break
+        fi
+        echo yes
+        return 1
+    done
+
+    echo no
+    return 0
+}
+dependency_error_glew()
+{
+    printf "checking for glew... "
+    # dependency glew
+    while true
+    do
+        if [ -z "$PKG_CONFIG" ]; then
+            break
+        fi
+        if test_pkg_config "glew" "" "" "" ; then
+            TEMP_CFLAGS="$TEMP_CFLAGS `"$PKG_CONFIG" --cflags glew`"
+            TEMP_LDFLAGS="$TEMP_LDFLAGS `"$PKG_CONFIG" --libs glew`"
+        else
+            break
+        fi
+        echo yes
+        return 1
+    done
+
+    echo no
+    return 0
+}
+dependency_error_ucx()
+{
+    printf "checking for ucx... "
+    # dependency ucx
+    while true
+    do
+        if check_lib ucx cx/common.h > /dev/null ; then
+            :
+        else
+            break
+        fi
+        TEMP_LDFLAGS="$TEMP_LDFLAGS -lucx"
+        echo yes
+        return 1
+    done
+
+    echo no
+    return 0
+}
+
+
+
+
+# start collecting dependency information
+echo > "$TEMP_DIR/flags.mk"
+
+DEPENDENCIES_FAILED=
+ERROR=0
+# unnamed dependencies
+TEMP_CFLAGS=
+TEMP_CXXFLAGS=
+TEMP_LDFLAGS=
+while true
+do
+    while true
+    do
+        if [ -z "$lang_c" ] ; then
+            ERROR=1
+            break
+        fi
+
+        break
+    done
+    break
+done
+
+# add general dependency flags to flags.mk
+echo "# general flags" >> "$TEMP_DIR/flags.mk"
+if [ -n "${TEMP_CFLAGS}" -a -n "$lang_c" ]; then
+    echo "CFLAGS += $TEMP_CFLAGS" >> "$TEMP_DIR/flags.mk"
+fi
+if [ -n "${TEMP_CXXFLAGS}" -a -n "$lang_cpp" ]; then
+    echo "CXXFLAGS += $TEMP_CXXFLAGS" >> "$TEMP_DIR/flags.mk"
+fi
+if [ -n "${TEMP_LDFLAGS}" ]; then
+    echo "LDFLAGS += $TEMP_LDFLAGS" >> "$TEMP_DIR/flags.mk"
+fi
+
+#
+# OPTION VALUES
+#
+
+#
+# TARGETS
+#
+
+echo >> "$TEMP_DIR/flags.mk"
+echo "configuring target: default"
+echo "# flags for target default" >> "$TEMP_DIR/flags.mk"
+TEMP_CFLAGS=
+TEMP_CXXFLAGS=
+TEMP_LDFLAGS=
+
+if dependency_error_sdl2_ttf; then
+    DEPENDENCIES_FAILED="$DEPENDENCIES_FAILED sdl2_ttf "
+    ERROR=1
+fi
+if dependency_error_sdl2; then
+    DEPENDENCIES_FAILED="$DEPENDENCIES_FAILED sdl2 "
+    ERROR=1
+fi
+if dependency_error_glew; then
+    DEPENDENCIES_FAILED="$DEPENDENCIES_FAILED glew "
+    ERROR=1
+fi
+if dependency_error_ucx; then
+    DEPENDENCIES_FAILED="$DEPENDENCIES_FAILED ucx "
+    ERROR=1
+fi
+
+# Features
+
+
+if [ -n "${TEMP_CFLAGS}" -a -n "$lang_c" ]; then
+    echo "CFLAGS  += $TEMP_CFLAGS" >> "$TEMP_DIR/flags.mk"
+fi
+if [ -n "${TEMP_CXXFLAGS}" -a -n "$lang_cpp" ]; then
+    echo "CXXFLAGS  += $TEMP_CXXFLAGS" >> "$TEMP_DIR/flags.mk"
+fi
+if [ "$BUILD_TYPE" = "debug" ]; then
+    if [ -n "$lang_c" ]; then
+        echo 'CFLAGS += ${DEBUG_CC_FLAGS}' >> "$TEMP_DIR/flags.mk"
+    fi
+    if [ -n "$lang_cpp" ]; then
+        echo 'CXXFLAGS += ${DEBUG_CXX_FLAGS}' >> "$TEMP_DIR/flags.mk"
+    fi
+fi
+if [ "$BUILD_TYPE" = "release" ]; then
+    if [ -n "$lang_c" ]; then
+        echo 'CFLAGS += ${RELEASE_CC_FLAGS}' >> "$TEMP_DIR/flags.mk"
+    fi
+    if [ -n "$lang_cpp" ]; then
+        echo 'CXXFLAGS += ${RELEASE_CXX_FLAGS}' >> "$TEMP_DIR/flags.mk"
+    fi
+fi
+if [ -n "${TEMP_LDFLAGS}" ]; then
+    echo "LDFLAGS += $TEMP_LDFLAGS" >> "$TEMP_DIR/flags.mk"
+fi
+
+
+# final result
+if [ $ERROR -ne 0 ]; then
+    echo
+    echo "Error: Unresolved dependencies"
+    echo "$DEPENDENCIES_FAILED"
+    abort_configure
+fi
+
+echo "configure finished"
+echo
+echo "Build Config:"
+echo "  PREFIX:    $PREFIX"
+echo "  TOOLCHAIN: $TOOLCHAIN_NAME"
+echo
+
+# generate the config.mk file
+cat > "$TEMP_DIR/config.mk" << __EOF__
+#
+# config.mk generated by configure
+#
+
+__EOF__
+write_toolchain_defaults "$TEMP_DIR/toolchain.mk"
+cat "$TEMP_DIR/vars.mk" "$TEMP_DIR/toolchain.mk" "$TEMP_DIR/flags.mk" "$TEMP_DIR/make.mk" > config.mk
+rm -Rf "$TEMP_DIR"
+
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/cc.mk	Fri Oct 06 21:21:10 2023 +0200
@@ -0,0 +1,11 @@
+#
+# cc toolchain config
+#
+
+CFLAGS =
+DEBUG_CC_FLAGS = -g
+RELEASE_CC_FLAGS = -O3 -DNDEBUG
+LDFLAGS =
+
+SHLIB_CFLAGS = -fPIC
+SHLIB_LDFLAGS = -shared
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/configure.vm	Fri Oct 06 21:21:10 2023 +0200
@@ -0,0 +1,609 @@
+#!/bin/sh
+
+# create temporary directory
+TEMP_DIR=".tmp-`uname -n`"
+rm -Rf "$TEMP_DIR"
+if mkdir -p "$TEMP_DIR"; then
+    :
+else
+    echo "Cannot create tmp dir $TEMP_DIR"
+    echo "Abort"
+    exit 1
+fi
+touch "$TEMP_DIR/options"
+touch "$TEMP_DIR/features"
+
+# define standard variables
+PREFIX=/usr
+EPREFIX=
+BINDIR=
+SBINDIR=
+LIBDIR=
+LIBEXECDIR=
+DATADIR=
+SYSCONFDIR=
+SHAREDSTATEDIR=
+LOCALSTATEDIR=
+INCLUDEDIR=
+INFODIR=
+MANDIR=
+
+# custom variables
+#foreach( $var in $vars )
+#if( $var.exec )
+${var.varName}=`${var.value}`
+#else
+${var.varName}="${var.value}"
+#end
+#end
+
+# features
+#foreach( $feature in $features )
+#if( ${feature.auto} )
+${feature.varName}=auto
+#end
+#end
+
+# clean abort
+abort_configure()
+{
+    rm -Rf "$TEMP_DIR"
+    exit 1
+}
+
+# help text
+printhelp()
+{
+    echo "Usage: $0 [OPTIONS]..."
+    cat << __EOF__
+Installation directories:
+  --prefix=PREFIX         path prefix for architecture-independent files
+                          [/usr]
+  --exec-prefix=EPREFIX   path prefix for architecture-dependent files
+                          [PREFIX]
+
+  --bindir=DIR            user executables [EPREFIX/bin]
+  --sbindir=DIR           system admin executables [EPREFIX/sbin]
+  --libexecdir=DIR        program executables [EPREFIX/libexec]
+  --sysconfdir=DIR        system configuration files [PREFIX/etc]
+  --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
+  --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --libdir=DIR            object code libraries [EPREFIX/lib]
+  --includedir=DIR        C header files [PREFIX/include]
+  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
+  --datadir=DIR           read-only architecture-independent data [DATAROOTDIR]
+  --infodir=DIR           info documentation [DATAROOTDIR/info]
+  --mandir=DIR            man documentation [DATAROOTDIR/man]
+
+#if( $options.size() > 0 )
+Options:
+  --debug                 add extra compile flags for debug builds
+  --release               add extra compile flags for release builds
+#foreach( $opt in $options )
+  --${opt.argument}=${opt.valuesString}
+#end
+
+#end
+#if( $features.size() > 0 )
+Optional Features:
+#foreach( $feature in $features )
+#if( $feature.auto )
+  --disable-${feature.arg}
+#else
+  --enable-${feature.arg}
+#end
+#end
+
+#end
+__EOF__
+}
+
+#
+# parse arguments
+#
+BUILD_TYPE="default"
+#set( $D = '$' )
+for ARG in "$@"
+do
+    case "$ARG" in
+        "--prefix="*)         PREFIX=${D}{ARG#--prefix=} ;;
+        "--exec-prefix="*)    EPREFIX=${D}{ARG#--exec-prefix=} ;;
+        "--bindir="*)         BINDIR=${D}{ARG#----bindir=} ;;
+        "--sbindir="*)        SBINDIR=${D}{ARG#--sbindir=} ;;
+        "--libdir="*)         LIBDIR=${D}{ARG#--libdir=} ;;
+        "--libexecdir="*)     LIBEXECDIR=${D}{ARG#--libexecdir=} ;;
+        "--datadir="*)        DATADIR=${D}{ARG#--datadir=} ;;
+        "--sysconfdir="*)     SYSCONFDIR=${D}{ARG#--sysconfdir=} ;;
+        "--sharedstatedir="*) SHAREDSTATEDIR=${D}{ARG#--sharedstatedir=} ;;
+        "--localstatedir="*)  LOCALSTATEDIR=${D}{ARG#--localstatedir=} ;;
+        "--includedir="*)     INCLUDEDIR=${D}{ARG#--includedir=} ;;
+        "--infodir="*)        INFODIR=${D}{ARG#--infodir=} ;;
+        "--mandir"*)          MANDIR=${D}{ARG#--mandir} ;;
+        "--help"*) printhelp; abort_configure ;;
+        "--debug")           BUILD_TYPE="debug" ;;
+        "--release")         BUILD_TYPE="release" ;;
+    #foreach( $opt in $options )
+        "--${opt.argument}="*) ${opt.varName}=${D}{ARG#--${opt.argument}=} ;;
+    #end
+    #foreach( $feature in $features )
+        "--enable-${feature.arg}") ${feature.varName}=on ;;
+        "--disable-${feature.arg}") unset ${feature.varName} ;;
+    #end
+        "-"*) echo "unknown option: $ARG"; abort_configure ;;
+    esac
+done
+
+## Begin unparsed content. **
+#[[
+# set dir variables
+: ${EPREFIX:="$PREFIX"}
+: ${BINDIR:="$EPREFIX/bin"}
+: ${SBINDIR:="$EPREFIX/sbin"}
+: ${LIBDIR:="$EPREFIX/lib"}
+: ${LIBEXECDIR:="$EPREFIX/libexec"}
+: ${DATADIR:="$PREFIX/share"}
+: ${SYSCONFDIR:="$PREFIX/etc"}
+: ${SHAREDSTATEDIR:="$PREFIX/com"}
+: ${LOCALSTATEDIR:="$PREFIX/var"}
+: ${INCLUDEDIR:="$PREFIX/include"}
+: ${INFODIR:="$PREFIX/info"}
+: ${MANDIR:="$PREFIX/man"}
+
+# Test for availability of pkg-config
+PKG_CONFIG=`command -v pkg-config`
+: ${PKG_CONFIG:="false"}
+
+# Simple uname based platform detection
+# $PLATFORM is used for platform dependent dependency selection
+OS=`uname -s`
+OS_VERSION=`uname -r`
+printf "detect platform... "
+if [ "$OS" = "SunOS" ]; then
+    PLATFORM="solaris sunos unix svr4"
+fi
+if [ "$OS" = "Linux" ]; then
+    PLATFORM="linux unix"
+fi
+if [ "$OS" = "FreeBSD" ]; then
+    PLATFORM="freebsd bsd unix"
+fi
+if [ "$OS" = "Darwin" ]; then
+    PLATFORM="macos osx bsd unix"
+fi
+if echo "$OS" | grep -i "MINGW" > /dev/null; then
+    PLATFORM="windows mingw"
+fi
+: ${PLATFORM:="unix"}
+
+PLATFORM_NAME=`echo "$PLATFORM" | cut -f1 -d' ' -`
+echo "$PLATFORM_NAME"
+
+isplatform()
+{
+    for p in $PLATFORM
+    do
+        if [ "$p" = "$1" ]; then
+            return 0
+        fi
+    done
+    return 1
+}
+notisplatform()
+{
+    for p in $PLATFORM
+    do
+        if [ "$p" = "$1" ]; then
+            return 1
+        fi
+    done
+    return 0
+}
+]]#
+## End of unparsed content **
+
+# generate vars.mk
+cat > "$TEMP_DIR/vars.mk" << __EOF__
+PREFIX="$PREFIX"
+EPREFIX="$EPREFIX"
+BINDIR="$BINDIR"
+SBINDIR="$SBINDIR"
+LIBDIR="$LIBDIR"
+LIBEXECDIR="$LIBEXECDIR"
+DATADIR="$DATADIR"
+SYSCONFDIR="$SYSCONFDIR"
+SHAREDSTATEDIR="$SHAREDSTATEDIR"
+LOCALSTATEDIR="$LOCALSTATEDIR"
+INCLUDEDIR="$INCLUDEDIR"
+INFODIR="$INFODIR"
+MANDIR="$MANDIR"
+#foreach( $var in $vars )
+${var.varName}="${D}${var.varName}"
+#end
+__EOF__
+sort -u -o "$TEMP_DIR/vars.mk" "$TEMP_DIR/vars.mk"
+
+
+# toolchain detection utilities
+. make/toolchain.sh
+
+#
+# DEPENDENCIES
+#
+
+# check languages
+lang_c=
+lang_cpp=
+#foreach( $lang in $languages )
+if detect_${lang}_compiler ; then
+    lang_${lang}=1
+fi
+#end
+
+# create buffer for make variables required by dependencies
+echo > "$TEMP_DIR/make.mk"
+
+test_pkg_config()
+{
+    if "$PKG_CONFIG" --exists "$1" ; then :
+    else return 1 ; fi
+    if [ -z "$2" ] || "$PKG_CONFIG" --atleast-version="$2" "$1" ; then :
+    else return 1 ; fi
+    if [ -z "$3" ] || "$PKG_CONFIG" --exact-version="$3" "$1" ; then :
+    else return 1 ; fi
+    if [ -z "$4" ] || "$PKG_CONFIG" --max-version="$4" "$1" ; then :
+    else return 1 ; fi
+    return 0
+}
+
+#foreach( $dependency in $namedDependencies )
+dependency_error_${dependency.id}()
+{
+    printf "checking for ${dependency.name}... "
+    #foreach( $sub in $dependency.subdependencies )
+    # dependency $sub.fullName
+    while true
+    do
+        #if( $sub.platform )
+        if notisplatform "${sub.platform}"; then
+            break
+        fi
+        #end
+        #foreach( $np in $sub.notList )
+        if isplatform "${np}"; then
+            break
+        fi
+        #end
+        #foreach( $lang in $sub.lang )
+        if [ -z "$lang_${lang}" ] ; then
+            break
+        fi
+        #end
+        #if( $sub.pkgconfig.size() > 0 )
+        if [ -z "$PKG_CONFIG" ]; then
+            break
+        fi
+        #end
+        #foreach( $test in $sub.tests )
+        if $test > /dev/null ; then
+            :
+        else
+            break
+        fi
+        #end
+        #foreach( $pkg in $sub.pkgconfig )
+        if test_pkg_config "$pkg.name" "$pkg.atleast" "$pkg.exact" "$pkg.max" ; then
+            TEMP_CFLAGS="$TEMP_CFLAGS `"$PKG_CONFIG" --cflags $pkg.name`"
+            TEMP_LDFLAGS="$TEMP_LDFLAGS `"$PKG_CONFIG" --libs $pkg.name`"
+        else
+            break
+        fi
+        #end
+        #foreach( $flags in $sub.flags )
+        #if( $flags.exec )
+        if tmp_flags=`$flags.value` ; then
+            TEMP_$flags.varName="$TEMP_$flags.varName $tmp_flags"
+        else
+            break
+        fi
+        #else
+        TEMP_$flags.varName="$TEMP_$flags.varName $flags.value"
+        #end
+        #end
+        #if ( $sub.make.length() > 0 )
+        cat >> $TEMP_DIR/make.mk << __EOF__
+# Dependency: $dependency.name
+$sub.make
+__EOF__
+        #end
+        echo yes
+        return 1
+    done
+
+    #end
+    echo no
+    return 0
+}
+#end
+
+
+
+
+# start collecting dependency information
+echo > "$TEMP_DIR/flags.mk"
+
+DEPENDENCIES_FAILED=
+ERROR=0
+#if( $dependencies.size() > 0 )
+# unnamed dependencies
+TEMP_CFLAGS=
+TEMP_CXXFLAGS=
+TEMP_LDFLAGS=
+#foreach( $dependency in $dependencies )
+while true
+do
+    #if( $dependency.platform )
+    if notisplatform "${dependency.platform}"; then
+        break
+    fi
+    #end
+    #foreach( $np in $dependency.notList )
+    if isplatform "${np}"; then
+        break
+    fi
+    #end
+    while true
+    do
+        #foreach( $lang in $dependency.lang )
+        if [ -z "$lang_${lang}" ] ; then
+            ERROR=1
+            break
+        fi
+        #end
+        #if( $dependency.pkgconfig.size() > 0 )
+        if [ -z "$PKG_CONFIG" ]; then
+            ERROR=1
+            break
+        fi
+        #end
+        #foreach( $pkg in $dependency.pkgconfig )
+        printf "checking for pkg-config package $pkg.name... "
+        if test_pkg_config "$pkg.name" "$pkg.atleast" "$pkg.exact" "$pkg.max" ; then
+            echo yes
+            TEMP_CFLAGS="$TEMP_CFLAGS `"$PKG_CONFIG" --cflags $pkg.name`"
+            TEMP_LDFLAGS="$TEMP_LDFLAGS `"$PKG_CONFIG" --libs $pkg.name`"
+        else
+            echo no
+            ERROR=1
+            break
+        fi
+        #end
+
+        #foreach( $flags in $dependency.flags )
+        #if( $flags.exec )
+        $flags.value > /dev/null
+        if tmp_flags=`$flags.value` ; then
+            TEMP_$flags.varName="$TEMP_$flags.varName $tmp_flags"
+        else
+            ERROR=1
+            break
+        fi
+        #else
+        TEMP_$flags.varName="$TEMP_$flags.varName $flags.value"
+        #end
+        #end
+        #if ( $dependency.make.length() > 0 )
+        cat >> "$TEMP_DIR/make.mk" << __EOF__
+$dependency.make
+__EOF__
+        #end
+        break
+    done
+    break
+done
+#end
+
+# add general dependency flags to flags.mk
+echo "# general flags" >> "$TEMP_DIR/flags.mk"
+if [ -n "${TEMP_CFLAGS}" -a -n "$lang_c" ]; then
+    echo "CFLAGS += $TEMP_CFLAGS" >> "$TEMP_DIR/flags.mk"
+fi
+if [ -n "${TEMP_CXXFLAGS}" -a -n "$lang_cpp" ]; then
+    echo "CXXFLAGS += $TEMP_CXXFLAGS" >> "$TEMP_DIR/flags.mk"
+fi
+if [ -n "${TEMP_LDFLAGS}" ]; then
+    echo "LDFLAGS += $TEMP_LDFLAGS" >> "$TEMP_DIR/flags.mk"
+fi
+#end
+
+#
+# OPTION VALUES
+#
+#foreach( $opt in $options )
+#foreach( $val in $opt.values )
+${val.func}()
+{
+    VERR=0
+    #foreach( $dep in $val.dependencies )
+    if dependency_error_$dep ; then
+        VERR=1
+    fi
+    #end
+    if [ $VERR -ne 0 ]; then
+        return 1
+    fi
+    #foreach( $def in $val.defines )
+        TEMP_CFLAGS="$TEMP_CFLAGS ${def.toFlags()}"
+        TEMP_CXXFLAGS="$TEMP_CXXFLAGS ${def.toFlags()}"
+    #end
+    #if( $val.hasMake() )
+    cat >> "$TEMP_DIR/make.mk" << __EOF__
+$val.make
+__EOF__
+    #end
+    return 0
+}
+#end
+#end
+
+#
+# TARGETS
+#
+
+#foreach( $target in $targets )
+echo >> "$TEMP_DIR/flags.mk"
+#if ( $target.name )
+echo "configuring target: $target.name"
+echo "# flags for target $target.name" >> "$TEMP_DIR/flags.mk"
+#else
+echo "configuring global target"
+echo "# flags for unnamed target" >> "$TEMP_DIR/flags.mk"
+#end
+TEMP_CFLAGS=
+TEMP_CXXFLAGS=
+TEMP_LDFLAGS=
+
+#foreach( $dependency in $target.dependencies )
+if dependency_error_$dependency; then
+    DEPENDENCIES_FAILED="$DEPENDENCIES_FAILED ${dependency} "
+    ERROR=1
+fi
+#end
+
+# Features
+#foreach( $feature in $target.features )
+if [ -n "${D}${feature.varName}" ]; then
+#foreach( $dependency in $feature.dependencies )
+    # check dependency
+    if dependency_error_$dependency ; then
+        # "auto" features can fail and are just disabled in this case
+        if [ "${D}${feature.varName}" = "auto" ]; then
+            DISABLE_${feature.varName}=1
+        else
+            DEPENDENCIES_FAILED="$DEPENDENCIES_FAILED ${dependency} "
+            ERROR=1
+        fi
+    fi
+#end
+    if [ -n "$DISABLE_${feature.varName}" ]; then
+        unset ${feature.varName}
+    fi
+fi
+#end
+
+#foreach( $opt in $target.options )
+# Option: --${opt.argument}
+if [ -z "${D}${opt.varName}" ]; then
+    echo "auto-detecting option '${opt.argument}'"
+    SAVED_ERROR="$ERROR"
+    SAVED_DEPENDENCIES_FAILED="$DEPENDENCIES_FAILED"
+    ERROR=1
+    while true
+    do
+        #foreach( $optdef in $opt.defaults )
+        #if( $optdef.platform )
+        if isplatform "$optdef.platform"; then
+        #end
+        if $optdef.func ; then
+            echo "  ${opt.argument}: ${optdef.valueName}" >> "$TEMP_DIR/options"
+            ERROR=0
+            break
+        fi
+        #if( $optdef.platform )
+        fi
+        #end
+        #end
+        break
+    done
+    if [ $ERROR -ne 0 ]; then
+        SAVED_ERROR=1
+        SAVED_DEPENDENCIES_FAILED="option '${opt.argument}' $SAVED_DEPENDENCIES_FAILED"
+    fi
+    ERROR="$SAVED_ERROR"
+    DEPENDENCIES_FAILED="$SAVED_DEPENDENCIES_FAILED"
+else
+    echo "checking option ${opt.argument} = ${D}${opt.varName}"
+    if false; then
+        false
+    #foreach( $optval in $opt.values )
+    elif [ "${D}${opt.varName}" = "${optval.value}" ]; then
+        echo "  ${opt.argument}: ${D}${opt.varName}" >> $TEMP_DIR/options
+        if $optval.func ; then
+            :
+        else
+            ERROR=1
+            DEPENDENCIES_FAILED="option '${opt.argument}' $DEPENDENCIES_FAILED"
+        fi
+    #end
+    fi
+fi
+#end
+
+if [ -n "${TEMP_CFLAGS}" -a -n "$lang_c" ]; then
+    echo "${target.cFlags}  += $TEMP_CFLAGS" >> "$TEMP_DIR/flags.mk"
+fi
+if [ -n "${TEMP_CXXFLAGS}" -a -n "$lang_cpp" ]; then
+    echo "${target.cxxFlags}  += $TEMP_CXXFLAGS" >> "$TEMP_DIR/flags.mk"
+fi
+if [ "$BUILD_TYPE" = "debug" ]; then
+    if [ -n "$lang_c" ]; then
+        echo '${target.cFlags} += ${DEBUG_CC_FLAGS}' >> "$TEMP_DIR/flags.mk"
+    fi
+    if [ -n "$lang_cpp" ]; then
+        echo '${target.cxxFlags} += ${DEBUG_CXX_FLAGS}' >> "$TEMP_DIR/flags.mk"
+    fi
+fi
+if [ "$BUILD_TYPE" = "release" ]; then
+    if [ -n "$lang_c" ]; then
+        echo '${target.cFlags} += ${RELEASE_CC_FLAGS}' >> "$TEMP_DIR/flags.mk"
+    fi
+    if [ -n "$lang_cpp" ]; then
+        echo '${target.cxxFlags} += ${RELEASE_CXX_FLAGS}' >> "$TEMP_DIR/flags.mk"
+    fi
+fi
+if [ -n "${TEMP_LDFLAGS}" ]; then
+    echo "${target.ldFlags} += $TEMP_LDFLAGS" >> "$TEMP_DIR/flags.mk"
+fi
+
+#end
+
+# final result
+if [ $ERROR -ne 0 ]; then
+    echo
+    echo "Error: Unresolved dependencies"
+    echo "$DEPENDENCIES_FAILED"
+    abort_configure
+fi
+
+echo "configure finished"
+echo
+echo "Build Config:"
+echo "  PREFIX:    $PREFIX"
+echo "  TOOLCHAIN: $TOOLCHAIN_NAME"
+#if ( $options.size() > 0 )
+echo "Options:"
+cat "$TEMP_DIR/options"
+#end
+#if ( $features.size() > 0 )
+echo "Features:"
+#foreach( $feature in $features )
+if [ -n "${D}${feature.varName}" ]; then
+echo "  $feature.name: on"
+else
+echo "  $feature.name: off"
+fi
+#end
+#end
+echo
+
+# generate the config.mk file
+cat > "$TEMP_DIR/config.mk" << __EOF__
+#
+# config.mk generated by configure
+#
+
+__EOF__
+write_toolchain_defaults "$TEMP_DIR/toolchain.mk"
+cat "$TEMP_DIR/vars.mk" "$TEMP_DIR/toolchain.mk" "$TEMP_DIR/flags.mk" "$TEMP_DIR/make.mk" > config.mk
+rm -Rf "$TEMP_DIR"
+
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/project.xml	Fri Oct 06 21:21:10 2023 +0200
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://unixwork.de/uwproj">
+	<dependency>
+		<lang>c</lang>
+	</dependency>
+
+	<dependency name="ucx">
+		<test>check_lib ucx cx/common.h</test>
+		<ldflags>-lucx</ldflags>
+	</dependency>
+
+	<dependency name="sdl2">
+		<pkgconfig>sdl2</pkgconfig>
+	</dependency>
+
+	<dependency name="sdl2_ttf">
+		<pkgconfig>SDL2_ttf</pkgconfig>
+	</dependency>
+
+	<dependency name="glew">
+		<pkgconfig>glew</pkgconfig>
+	</dependency>
+</project>
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/toolchain.sh	Fri Oct 06 21:21:10 2023 +0200
@@ -0,0 +1,186 @@
+#!/bin/sh
+#
+# toolchain detection
+#
+
+C_COMPILERS="gcc clang suncc cc"
+CPP_COMPILERS="g++ clang++ sunCC CC"
+unset TOOLCHAIN_NAME
+unset TOOLCHAIN_CC
+unset TOOLCHAIN_CXX
+
+check_c_compiler()
+{
+	cat > "$TEMP_DIR/test.c" << __EOF__
+/* test file */
+#include <stdio.h>
+int main(int argc, char **argv) {
+#if defined(__clang__)
+	printf("clang\n");
+#elif defined(__GNUC__)
+	printf("gcc\n");
+#elif defined(__sun)
+	printf("suncc\n");
+#else
+	printf("unknown\n");
+#endif
+	return 0;
+}
+__EOF__
+	rm -f "$TEMP_DIR/checkcc"
+	$1 -o "$TEMP_DIR/checkcc" $CFLAGS $LDFLAGS "$TEMP_DIR/test.c" 2> /dev/null
+}
+
+check_cpp_compiler()
+{
+	cat > "$TEMP_DIR/test.cpp" << __EOF__
+/* test file */
+#include <iostream>
+int main(int argc, char **argv) {
+#if defined(__clang__)
+	std::cout << "clang" << std::endl;
+#elif defined(__GNUC__)
+	std::cout << "gcc" << std::endl;
+#elif defined(__sun)
+	std::cout << "suncc" << std::endl;
+#else
+	std::cout << "cc" << std::endl;
+#endif
+	return 0;
+}
+__EOF__
+	rm -f "$TEMP_DIR/checkcc"
+	$1 -o "$TEMP_DIR/checkcc" $CXXFLAGS $LDFLAGS "$TEMP_DIR/test.cpp" 2> /dev/null
+}
+
+create_libtest_source()
+{
+  # $1: filename
+  # $2: optional include
+	cat > "$TEMP_DIR/$1" << __EOF__
+/* libtest file */
+int main(int argc, char **argv) {
+	return 0;
+}
+__EOF__
+  if [ -n "$2" ]; then
+    echo "#include <$2>" >> "$TEMP_DIR/$1"
+  fi
+}
+
+check_c_lib()
+{
+  # $1: libname
+  # $2: optional include
+  if [ -z "$TOOLCHAIN_CC" ]; then
+    return 1
+  fi
+  create_libtest_source "test.c" "$2"
+  rm -f "$TEMP_DIR/checklib"
+	$TOOLCHAIN_CC -o "$TEMP_DIR/checklib" $CFLAGS $LDFLAGS "-l$1" "$TEMP_DIR/test.c" 2> /dev/null
+}
+
+check_cpp_lib()
+{
+  # $1: libname
+  # $2: optional include
+  if [ -z "$TOOLCHAIN_CXX" ]; then
+    return 1
+  fi
+	create_libtest_source "test.cpp" "$2"
+  rm -f "$TEMP_DIR/checklib"
+	$TOOLCHAIN_CXX -o "$TEMP_DIR/checklib" $CXXFLAGS $LDFLAGS "-l$1" "$TEMP_DIR/test.cpp" 2> /dev/null
+}
+
+check_lib()
+{
+  # $1: libname
+  # $2: optional include
+	if [ -n "$TOOLCHAIN_CC" ]; then
+		check_c_lib "$1" "$2"
+	elif  [ -n "$TOOLCHAIN_CXX" ]; then
+	  check_cpp_lib "$1" "$2"
+	fi
+}
+
+detect_c_compiler()
+{
+  if [ -n "$TOOLCHAIN_CC" ]; then
+    return 0
+  fi
+  printf "detect C compiler... "
+  if [ -n "$CC" ]; then
+    if check_c_compiler "$CC"; then
+      TOOLCHAIN_CC=$CC
+      TOOLCHAIN_NAME=`"$TEMP_DIR/checkcc"`
+      echo "$CC"
+      return 0
+    else
+      echo "$CC is not a working C compiler"
+      return 1
+    fi
+  else
+    for COMP in $C_COMPILERS
+    do
+      if check_c_compiler "$COMP"; then
+        TOOLCHAIN_CC=$COMP
+        TOOLCHAIN_NAME=`"$TEMP_DIR/checkcc"`
+        echo "$COMP"
+        return 0
+      fi
+    done
+    echo "not found"
+    return 1
+  fi
+}
+
+detect_cpp_compiler()
+{
+  if [ -n "$TOOLCHAIN_CXX" ]; then
+    return 0
+  fi
+  printf "detect C++ compiler... "
+
+  if [ -n "$CXX" ]; then
+    if check_cpp_compiler "$CXX"; then
+      TOOLCHAIN_CXX=$CXX
+      TOOLCHAIN_NAME=`"$TEMP_DIR/checkcc"`
+      echo "$CXX"
+      return 0
+    else
+      echo "$CXX is not a working C++ compiler"
+      return 1
+    fi
+  else
+    for COMP in $CPP_COMPILERS
+    do
+      if check_cpp_compiler "$COMP"; then
+        TOOLCHAIN_CXX=$COMP
+        TOOLCHAIN_NAME=`"$TEMP_DIR/checkcc"`
+        echo "$COMP"
+        return 0
+      fi
+    done
+    echo "${TOOLCHAIN_CXX:-"not found"}"
+    return 1
+  fi
+}
+
+write_toolchain_defaults()
+{
+  echo "# toolchain" >> "$1"
+  if [ -n "$TOOLCHAIN_CC" ]; then
+    echo "CC = ${TOOLCHAIN_CC}" >> "$1"
+  fi
+  if [ -n "$TOOLCHAIN_CXX" ]; then
+    echo "CXX = ${TOOLCHAIN_CXX}" >> "$1"
+  fi
+  echo >> "$1"
+  if [ -f "make/${TOOLCHAIN_NAME}.mk" ]; then
+    cat "make/${TOOLCHAIN_NAME}.mk" >> "$1"
+  elif [ -f "make/cc.mk" ]; then
+    cat "make/cc.mk" >> "$1"
+  else
+    echo "!!! WARNING !!! Default toolchain flags not found. Configuration might be incomplete."
+  fi
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/uwproj.xsd	Fri Oct 06 21:21:10 2023 +0200
@@ -0,0 +1,131 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
+           xmlns="http://unixwork.de/uwproj"
+           targetNamespace="http://unixwork.de/uwproj"
+           elementFormDefault="qualified"
+           version="0.1"
+>
+    <xs:element name="project" type="ProjectType"/>
+
+    <xs:complexType name="ProjectType">
+        <xs:sequence>
+            <xs:element name="config" type="ConfigType" minOccurs="0"/>
+            <xs:element name="dependency" type="DependencyType" minOccurs="0" maxOccurs="unbounded"/>
+            <xs:element name="target" type="TargetType" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+    </xs:complexType>
+
+    <xs:complexType name="ConfigType">
+        <xs:sequence>
+            <xs:element name="var" type="ConfigVarType" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+    </xs:complexType>
+
+    <xs:complexType name="ConfigVarType">
+        <xs:simpleContent>
+            <xs:extension base="xs:string">
+                <xs:attribute name="name" type="xs:string" use="required"/>
+                <xs:attribute name="exec" type="xs:boolean" default="false"/>
+            </xs:extension>
+        </xs:simpleContent>
+    </xs:complexType>
+
+    <xs:complexType name="PkgConfigType">
+        <xs:simpleContent>
+            <xs:extension base="xs:string">
+                <xs:attribute name="atleast" type="xs:string"/>
+                <xs:attribute name="exact" type="xs:string"/>
+                <xs:attribute name="max" type="xs:string"/>
+            </xs:extension>
+        </xs:simpleContent>
+    </xs:complexType>
+
+    <xs:simpleType name="LangType">
+        <xs:restriction base="xs:string">
+            <xs:enumeration value="c"/>
+            <xs:enumeration value="cpp"/>
+        </xs:restriction>
+    </xs:simpleType>
+
+    <xs:complexType name="DependencyType">
+        <xs:choice minOccurs="0" maxOccurs="unbounded">
+            <xs:element name="lang" type="LangType"/>
+            <xs:element name="cflags" type="FlagsType"/>
+            <xs:element name="cxxflags" type="FlagsType"/>
+            <xs:element name="ldflags" type="FlagsType"/>
+            <xs:element name="pkgconfig" type="PkgConfigType"/>
+            <xs:element name="test" type="xs:string"/>
+            <xs:element name="make" type="xs:string"/>
+        </xs:choice>
+        <xs:attribute name="name" type="xs:string"/>
+        <xs:attribute name="platform" type="xs:string"/>
+        <xs:attribute name="not" type="xs:string"/>
+    </xs:complexType>
+
+    <xs:complexType name="FlagsType">
+        <xs:simpleContent>
+            <xs:extension base="xs:string">
+                <xs:attribute name="exec" type="xs:boolean" default="false"/>
+            </xs:extension>
+        </xs:simpleContent>
+    </xs:complexType>
+
+    <xs:complexType name="TargetType">
+        <xs:choice minOccurs="0" maxOccurs="unbounded">
+            <xs:element name="feature" type="FeatureType"/>
+            <xs:element name="option" type="OptionType"/>
+            <xs:element name="define" type="DefineType"/>
+            <xs:element name="dependencies" type="DependenciesType"/>
+            <xs:element name="alldependencies">
+                <xs:complexType/>
+            </xs:element>
+        </xs:choice>
+        <xs:attribute name="name" type="xs:string"/>
+    </xs:complexType>
+
+    <xs:complexType name="FeatureType">
+        <xs:choice minOccurs="0" maxOccurs="unbounded">
+            <xs:group ref="TargetDataGroup"/>
+        </xs:choice>
+        <xs:attribute name="name" type="xs:string" use="required"/>
+        <xs:attribute name="arg" type="xs:string"/>
+        <xs:attribute name="default" type="xs:boolean" default="false"/>
+    </xs:complexType>
+
+    <xs:complexType name="OptionType">
+        <xs:sequence>
+            <xs:element name="value" type="OptionValueType" minOccurs="0" maxOccurs="unbounded"/>
+            <xs:element name="default" type="OptionDefaultType" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+        <xs:attribute name="arg" type="xs:string"/>
+    </xs:complexType>
+
+    <xs:complexType name="OptionValueType">
+        <xs:choice minOccurs="0" maxOccurs="unbounded">
+            <xs:group ref="TargetDataGroup"/>
+        </xs:choice>
+        <xs:attribute name="str" type="xs:string" use="required"/>
+    </xs:complexType>
+
+    <xs:complexType name="OptionDefaultType">
+        <xs:attribute name="value" type="xs:string" use="required"/>
+        <xs:attribute name="platform" type="xs:string"/>
+    </xs:complexType>
+
+    <xs:group name="TargetDataGroup">
+        <xs:choice>
+            <xs:element name="define" type="DefineType" minOccurs="0" maxOccurs="unbounded"/>
+            <xs:element name="dependencies" type="DependenciesType" minOccurs="0" maxOccurs="unbounded"/>
+            <xs:element name="make" type="xs:string" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:choice>
+    </xs:group>
+
+    <xs:complexType name="DefineType">
+        <xs:attribute name="name" type="xs:string" use="required"/>
+        <xs:attribute name="value" type="xs:string"/>
+    </xs:complexType>
+
+    <xs:simpleType name="DependenciesType">
+        <xs:restriction base="xs:string"/>
+    </xs:simpleType>
+</xs:schema>
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/Makefile	Fri Oct 06 21:21:10 2023 +0200
@@ -0,0 +1,46 @@
+# Copyright 2023 Mike Becker. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+#   1. Redistributions of source code must retain the above copyright
+#      notice, this list of conditions and the following disclaimer.
+#
+#   2. Redistributions in binary form must reproduce the above copyright
+#      notice, this list of conditions and the following disclaimer in the
+#      documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+include ../config.mk
+
+BUILD_DIR=../build/lib
+
+SRC  = core.c
+
+OBJ = $(SRC:%.c=$(BUILD_DIR)/%.o)
+
+all: $(BUILD_DIR)/libascension.a FORCE
+	echo "You have successfully ascended."
+
+$(BUILD_DIR)/libascension.a: $(OBJ)
+	echo "Creating library..."
+	$(AR) $(ARFLAGS) $@ $^
+
+FORCE:
+
+$(BUILD_DIR)/core.o: core.c ascension/core.h ascension/utils.h
+	echo "Compiling $<"
+	$(CC) -o $@ $(CFLAGS) -c $<
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/ascension/core.h	Fri Oct 06 21:21:10 2023 +0200
@@ -0,0 +1,157 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ * Copyright 2023 Mike Becker. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef ASCENSION_CORE_H
+#define ASCENSION_CORE_H
+
+#include <SDL2/SDL.h>
+#include <SDL2/SDL_ttf.h>
+#include <GL/glew.h>
+
+#include <cx/string.h>
+#include <cx/buffer.h>
+#include <cx/list.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** The flag for the overall initialized state. */
+#define ASC_FLAG_INITILIZED  0x01u
+
+/** Flag is set, when error buffer contains new error information. */
+#define ASC_FLAG_HAS_ERROR  0x02u
+
+/** Flag is set, when SDL wants to quit the application. */
+#define ASC_FLAG_QUIT 0x80000000u
+
+typedef struct AscContext {
+    CxBuffer error_buffer;
+    CxList *windows;
+    unsigned int flags;
+} AscContext;
+
+/** Global ascension context. */
+extern AscContext asc_context;
+
+typedef struct AscWindowSettings {
+    int depth_size;
+    int vsync;
+    int width;
+    int height;
+    int fullscreen;
+    int gl_major_version;
+    int gl_minor_version;
+    char const* title;
+} AscWindowSettings;
+
+typedef struct AscWindow {
+    SDL_Window* window;
+    SDL_GLContext glctx;
+    Uint32 id;
+    int width;
+    int height;
+} AscWindow;
+
+void asc_context_initialize(void);
+void asc_context_destroy(void);
+
+static inline bool asc_test_flag(unsigned int reg, int flag) {
+    return (reg & flag) == flag;
+}
+
+static inline void asc_set_flag(unsigned int *reg, int flag) {
+    *reg |= flag;
+}
+
+static inline void asc_clear_flag(unsigned int *reg, int flag) {
+    *reg &= ~flag;
+}
+
+void asc_error_cxstr(cxstring text);
+void asc_error_cchar(char const* text);
+void asc_error_cuchar(unsigned char const* text);
+
+#define asc_error(text) _Generic((text),     \
+    char const*: asc_error_cchar,            \
+    unsigned char const*: asc_error_cuchar,  \
+    char*: asc_error_cchar,                  \
+    unsigned char*: asc_error_cuchar,        \
+    cxstring: asc_error_cxstr)(text)
+
+bool asc_has_error(void);
+char const* asc_get_error(void);
+void asc_clear_error(void);
+
+/**
+ * Dispatches events and synchronizes all initialized windows.
+ *
+ * @return false, if one of the events is a QUIT event, true otherwise
+ */
+bool asc_loop_next(void);
+
+/**
+ * Initializes the settings structure with default values.
+ *
+ * @param settings an uninitialized settings object
+ */
+void asc_window_settings_init_defaults(AscWindowSettings* settings);
+
+/**
+ * Creates and initializes a new window and a corresponding OpenGL context.
+ *
+ * @param window the window structure
+ * @param settings the settings to be used for initialization
+ */
+void asc_window_initialize(AscWindow* window, AscWindowSettings const* settings);
+
+/**
+ * Destroys the window and its OpenGL context.
+ *
+ * Still alive windows will also be destroyed by asc_context_destroy()
+ * automatically.
+ *
+ * @param window the window
+ */
+void asc_window_destroy(AscWindow* window);
+
+/**
+ * Swaps buffers and adjusts the viewport to the current window size.
+ *
+ * This function is automatically invoked for all initialized windows
+ * by asc_loop_next(). You usually do not need to call this function manually.
+ *
+ * @param window the window
+ */
+void asc_window_sync(AscWindow const *window);
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif /* ASCENSION_CORE_H */
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/ascension/utils.h	Fri Oct 06 21:21:10 2023 +0200
@@ -0,0 +1,48 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ * Copyright 2023 Mike Becker. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef ASCENSION_UTILS_H
+#define ASCENSION_UTILS_H
+
+#include <stdbool.h>
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef NDEBUG
+#define asc_dprintf(...)
+#else
+#define asc_dprintf(...) printf(__VA_ARGS__); putchar('\n')
+#endif
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // ASCENSION_UTILS_H
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/core.c	Fri Oct 06 21:21:10 2023 +0200
@@ -0,0 +1,285 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ * Copyright 2023 Mike Becker. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "ascension/core.h"
+#include "ascension/utils.h"
+
+#include <cx/linked_list.h>
+#include <cx/printf.h>
+
+static void asc_gl_debug_callback(
+        GLenum source, GLenum type, GLuint id, GLenum severity,
+        GLsizei length, const GLchar* message,
+        const void* userParam
+) {
+    cxmutstr buf = cx_asprintf(
+            "source = %d, id = %u, type = %d, severity= %d, message = %.*s",
+            source, id, type, severity, length, message);
+    if (type == GL_DEBUG_TYPE_ERROR) {
+        asc_error(buf.ptr);
+    } else {
+        asc_dprintf("GL debug: %*.s", (int)buf.length, buf.ptr);
+    }
+    cx_strfree(&buf);
+}
+
+AscContext asc_context;
+
+// forward declarations
+static void asc_window_destroy_impl(AscWindow* window);
+
+void asc_context_initialize(void) {
+    if (asc_test_flag(asc_context.flags, ASC_FLAG_INITILIZED))
+        return;
+    asc_clear_flag(&asc_context.flags, ASC_FLAG_HAS_ERROR);
+
+    // initialize error buffer
+    cxBufferInit(
+            &asc_context.error_buffer,
+            NULL,
+            256,
+            NULL,
+            CX_BUFFER_AUTO_EXTEND
+    );
+
+    // initialize lists
+    asc_context.windows = cxLinkedListCreateSimple(CX_STORE_POINTERS);
+    asc_context.windows->simple_destructor =
+            (cx_destructor_func)asc_window_destroy_impl;
+
+    // initialize SDL
+    if (SDL_Init(SDL_INIT_VIDEO) < 0) {
+        asc_error(SDL_GetError());
+    } else {
+        if (TTF_Init() < 0) {
+            asc_error(TTF_GetError());
+        }
+    }
+    SDL_ClearError();
+    asc_set_flag(&asc_context.flags, ASC_FLAG_INITILIZED);
+    asc_dprintf("Ascension context initialized.");
+}
+
+void asc_context_destroy(void) {
+    // destroy lists
+    cxListDestroy(asc_context.windows);
+
+    // quit SDL
+    if (TTF_WasInit())
+        TTF_Quit();
+    SDL_Quit();
+
+    // destroy the error buffer
+    cxBufferDestroy(&asc_context.error_buffer);
+    asc_context.flags = 0;
+    asc_dprintf("Ascension context destroyed.");
+}
+
+void asc_error_cchar(char const* text) {
+    asc_error_cxstr(cx_str(text));
+}
+
+void asc_error_cuchar(unsigned char const* text) {
+    asc_error_cxstr(cx_str((char const*)text));
+}
+
+void asc_error_cxstr(cxstring text) {
+    if (text.length == 0) return;
+
+    // write error to debug output
+    asc_dprintf("ERROR: %*.s", (int)text.length, text.ptr);
+
+    // write error to buffer
+    CxBuffer* buf = &asc_context.error_buffer;
+    cxBufferWrite(text.ptr, 1, text.length, buf);
+    cxBufferPut(buf, '\n');
+
+    asc_set_flag(&asc_context.flags, ASC_FLAG_HAS_ERROR);
+}
+
+bool asc_has_error(void) {
+    return asc_test_flag(asc_context.flags, ASC_FLAG_HAS_ERROR);
+}
+
+char const* asc_get_error(void) {
+    // we zero-terminate the current buffer contents before providing them
+    cxBufferPut(&asc_context.error_buffer, 0);
+    --asc_context.error_buffer.pos;
+    --asc_context.error_buffer.size;
+    return asc_context.error_buffer.space;
+}
+
+void asc_clear_error(void) {
+    cxBufferClear(&asc_context.error_buffer);
+    asc_clear_flag(&asc_context.flags, ASC_FLAG_HAS_ERROR);
+}
+
+static void asc_event_window_resized(Uint32 id, Sint32 width, Sint32 height) {
+    CxIterator iter = cxListIterator(asc_context.windows);
+    cx_foreach(AscWindow*, w, iter) {
+        if (w->id == id) {
+            w->width = width;
+            w->height = height;
+            return;
+        }
+    }
+}
+
+bool asc_loop_next(void) {
+    // dispatch SDL events
+    SDL_Event event;
+    while (SDL_PollEvent(&event)) {
+        switch (event.type) {
+        case SDL_QUIT:return false;
+        case SDL_WINDOWEVENT: {
+            if (event.window.type == SDL_WINDOWEVENT_RESIZED)
+                asc_event_window_resized(
+                        event.window.windowID,
+                        event.window.data1,
+                        event.window.data2
+                );
+            break;
+        }
+        case SDL_KEYDOWN:
+            // TODO: remove this code and implement key press map instead
+            if (event.key.keysym.sym == SDLK_ESCAPE)
+                return false;
+            break;
+        case SDL_KEYUP:
+            // TODO: implement key press map
+            break;
+        }
+    }
+
+    // sync the windows
+    CxMutIterator windows = cxListMutIterator(asc_context.windows);
+    cx_foreach(AscWindow*, w, windows) {
+        asc_window_sync(w);
+    }
+    return true;
+}
+
+void asc_window_settings_init_defaults(AscWindowSettings* settings) {
+    settings->depth_size = 24;
+    settings->vsync = 1;
+    settings->width = 800;
+    settings->height = 600;
+    settings->fullscreen = 0;
+    settings->gl_major_version = 3;
+    settings->gl_minor_version = 3;
+    settings->title = "Ascended Window";
+}
+
+void asc_window_initialize(AscWindow* window, AscWindowSettings const* settings) {
+    Uint32 flags = SDL_WINDOW_OPENGL | SDL_WINDOW_SHOWN;
+    flags |= settings->fullscreen ? SDL_WINDOW_FULLSCREEN_DESKTOP : SDL_WINDOW_RESIZABLE;
+
+    window->window = SDL_CreateWindow(
+            settings->title,
+            SDL_WINDOWPOS_CENTERED,
+            SDL_WINDOWPOS_CENTERED,
+            settings->width,
+            settings->height,
+            flags
+    );
+    if (window->window == NULL) {
+        asc_error(SDL_GetError());
+        return;
+    }
+
+    window->id = SDL_GetWindowID(window->window);
+    SDL_GetWindowSize(window->window, &window->width, &window->height);
+
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, settings->gl_major_version);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, settings->gl_minor_version);
+    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, settings->depth_size);
+    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
+    window->glctx = SDL_GL_CreateContext(window->window);
+    if (window->glctx == NULL) {
+        asc_dprintf("Creating GL context failed for window %u", window->id);
+    } else {
+        glewExperimental = GL_TRUE;
+        GLenum err = glewInit();
+        if (err == GLEW_OK) {
+            SDL_GL_SetSwapInterval(settings->vsync);
+            glEnable(GL_DEPTH_TEST);
+            glEnable(GL_BLEND);
+            glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+            glEnable(GL_DEBUG_OUTPUT);
+            glDebugMessageCallback(asc_gl_debug_callback, NULL);
+            asc_dprintf("Window %u initialized", window->id);
+            cxListAdd(asc_context.windows, window);
+            return;
+        } else {
+            asc_error(glewGetErrorString(err));
+        }
+    }
+
+    // cleanup on error
+    if (window->glctx != NULL) {
+        SDL_GL_DeleteContext(window->glctx);
+    }
+    window->glctx = NULL;
+    SDL_DestroyWindow(window->window);
+    window->window = NULL;
+    window->id = 0;
+}
+
+void asc_window_destroy_impl(AscWindow* window) {
+    // destory the GL context and the window
+    if (window->glctx != NULL) {
+        SDL_GL_DeleteContext(window->glctx);
+    }
+    if (window->window != NULL) {
+        SDL_DestroyWindow(window->window);
+    }
+
+    // clean the data
+    asc_dprintf("Window %u and its OpenGL context destroyed.", window->id);
+    memset(window, 0, sizeof(AscWindow));
+}
+
+void asc_window_destroy(AscWindow* window) {
+    // find the window in the context and remove it
+    CxMutIterator iter = cxListMutIterator(asc_context.windows);
+    cx_foreach(AscWindow*, w, iter) {
+        if (w == window) {
+            asc_dprintf("Window %u removed from context.", window->id);
+            cxIteratorFlagRemoval(iter);
+        }
+    }
+    asc_window_destroy_impl(window);
+}
+
+void asc_window_sync(AscWindow const* window) {
+    SDL_GL_MakeCurrent(window->window, window->glctx);
+    SDL_GL_SwapWindow(window->window);
+    glViewport(0, 0, window->width, window->height);
+    glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
+    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/Makefile	Fri Oct 06 21:21:10 2023 +0200
@@ -0,0 +1,43 @@
+# Copyright 2023 Mike Becker. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+#   1. Redistributions of source code must retain the above copyright
+#      notice, this list of conditions and the following disclaimer.
+#
+#   2. Redistributions in binary form must reproduce the above copyright
+#      notice, this list of conditions and the following disclaimer in the
+#      documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+
+include ../config.mk
+
+BUILD_DIR=../build/test
+LIB_ASCENSION=../build/lib/libascension.a
+CFLAGS += -I../src
+
+all: $(BUILD_DIR)/sandbox FORCE
+	@echo "Sandbox demo successfully built."
+
+$(BUILD_DIR)/sandbox: $(BUILD_DIR)/sandbox.o $(LIB_ASCENSION)
+	echo "Linking executable..."
+	$(CC) $(LDFLAGS) -o $@ $^
+
+$(BUILD_DIR)/sandbox.o: sandbox.c ../src/ascension/core.h
+	echo "Compiling $<"
+	$(CC) -o $@ $(CFLAGS) -c $<
+
+FORCE:
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/sandbox.c	Fri Oct 06 21:21:10 2023 +0200
@@ -0,0 +1,66 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ * Copyright 2023 Mike Becker. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "ascension/core.h"
+
+#include <unistd.h>
+
+static bool show_message_box_on_error(SDL_Window* window) {
+    if (asc_has_error()) {
+        SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR,
+                "Fatal Error",
+                asc_get_error(),
+                window);
+        asc_clear_error();
+        return true;
+    } else {
+        return false;
+    }
+}
+
+int main(int argc, char** argv) {
+    asc_context_initialize();
+    if (show_message_box_on_error(NULL)) return 1;
+
+    AscWindowSettings settings;
+    asc_window_settings_init_defaults(&settings);
+    settings.title = "Sandbox Application";
+
+    AscWindow window;
+    asc_window_initialize(&window, &settings);
+
+    while (asc_loop_next()) {
+        // quit application on any error
+        if (show_message_box_on_error(window.window)) break;
+
+
+    }
+
+    asc_context_destroy();
+    return 0;
+}
+

Mercurial Repository: ascension

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