Migrate build system to GNU Autotools; remove SCons and CMake support

.gitignore

@@ -4,10 +4,40 @@ version.h
 test
 newtest
 *.o
+*.lo
+*.la
 *.a
 *.swp
 
+Makefile
+Makefile.in
+aclocal.m4
+ar-lib
+autom4te.cache/
+compile
+config.guess
+config.h
+config.h.in
+config.h.in~
+config.log
+config.status
+config.sub
+configure
+configure~
+depcomp
+install-sh
+libtool
+ltmain.sh
+missing
+src/.deps/
+src/.libs/
+src/Makefile
+src/Makefile.in
+src/libws2811.pc
+
+stamp-h1
+
 build/
 release/
 debug/
-settings.json
+settings.json

Makefile.am

@@ -0,0 +1,26 @@
+# Top-level Makefile.am
+
+SUBDIRS = src
+
+
+# Files to remove with 'make distclean'
+DISTCLEANFILES =
+distclean-local:
+	-rm -rf Makefile.in \
+					aclocal.m4\
+					ar-lib\
+					autom4te.cache\
+					compile\
+					config.guess\
+					config.h.in\
+					config.h.in~\
+					config.sub\
+					configure\
+					configure.ac~\
+					configure~\
+					depcomp\
+					install-sh\
+					libws2811.pc\
+					ltmain.sh\
+					missing\
+					src/Makefile.in

autogen.sh

@@ -0,0 +1,38 @@
+#!/bin/sh
+set -e
+
+# Optional: detect and error if required tools are missing
+for tool in autoconf automake libtool pkg-config; do
+    if ! command -v $tool >/dev/null 2>&1; then
+        echo "Error: $tool not found. Please install it." >&2
+        exit 1
+    fi
+done
+
+# Optionally clean up old generated files
+rm -f configure aclocal.m4 ltmain.sh libtool config.guess config.sub
+
+echo "Running aclocal..."
+aclocal
+
+echo "Running autoheader..."
+autoheader
+
+echo "Running libtoolize..."
+libtoolize --copy --force
+
+echo "Running automake..."
+automake --add-missing --copy
+
+echo "Running autoconf..."
+autoconf
+
+echo "Generating configure script done."
+
+# Run ./configure if desired
+if [ "$1" = "--configure" ]; then
+    shift
+    echo "Running ./configure $@"
+    ./configure "$@"
+fi
+