Add build system

.gitignore

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+orig/
+*.zip
+releases/
+test stuff/
+*.o
+*.la
+*.lo
+*.so
+*.dll
+.libs
+Makefile
+Makefile.in
+aclocal.m4
+autom4te.cache
+compile
+config.guess
+config.log
+config.status
+config.sub
+configure
+depcomp
+install-sh
+libtool
+ltmain.sh
+missing
+.deps/
+.dirstamp

Makefile.am

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+AM_CXXFLAGS = -O2 -std=c++11 -Wall -Wextra -Wno-unused-parameter -Wshadow
+
+AM_CPPFLAGS = $(VapourSynth_CFLAGS) $(SNDFILE_CFLAGS)
+
+lib_LTLIBRARIES = libdamb.la
+
+libdamb_la_SOURCES = src/damb.cpp
+
+libdamb_la_LDFLAGS = -no-undefined -avoid-version $(PLUGINLDFLAGS)
+
+libdamb_la_LIBADD = $(SNDFILE_LIBS)

autogen.sh

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+#!/bin/sh
+
+autoreconf --verbose --install --force

configure.ac

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+AC_INIT([MVTools], [1], [https://github.com/dubhater/vapoursynth-mvtools/issues], [MVTools], [https://github.com/dubhater/vapoursynth-mvtools/])
+
+: ${CXXFLAGS=""}
+
+AM_INIT_AUTOMAKE([foreign no-dist-gzip dist-xz subdir-objects no-define])
+AM_SILENT_RULES([yes])
+
+LT_INIT([disable-static win32-dll])
+
+AC_PROG_CXX
+
+AC_CANONICAL_HOST
+
+
+dnl Workaround for a bug in libtool
+dnl The windows libtool uses a file magic checking method that only accepts
+dnl dynamic libraries. Change it for libtool's alternative checking method.
+
+dnl Workaround found in configure.ac from ffms2.
+
+dnl Reproducing the error message below, for search engines and people
+dnl looking for a solution...
+
+dnl *** Warning: linker path does not have real file for library -lfftw3f.
+dnl *** I have the capability to make that library automatically link in when
+dnl *** you link to this library.  But I can only do this if you have a
+dnl *** shared version of the library, which you do not appear to have
+dnl *** because I did check the linker path looking for a file starting
+dnl *** with libfftw3f and none of the candidates passed a file format test
+dnl *** using a file magic. Last file checked: /home/asdf/mingw-w64/i686/mingw/lib/libfftw3f.a
+dnl *** The inter-library dependencies that have been dropped here will be
+dnl *** automatically added whenever a program is linked with this library
+dnl *** or is declared to -dlopen it.
+dnl *
+dnl *** Since this library must not contain undefined symbols,
+dnl *** because either the platform does not support them or
+dnl *** it was explicitly requested with -no-undefined,
+dnl *** libtool will only create a static version of it.
+
+if test "$lt_cv_file_magic_cmd" = "func_win32_libid" ; then
+    deplibs_check_method='file_magic file format pei*-(i386|x86-64)|(.*architecture: i386)?'
+    file_magic_cmd='$OBJDUMP -f'
+fi
+
+
+AS_CASE(
+  [$host_cpu],
+  [i?86],   [BITS="32"],
+  [x86_64], [BITS="64"],
+  []
+)
+
+AS_CASE(
+   [$host_os],
+   [cygwin*|mingw*],
+   [
+      AS_IF(
+         [test "x$BITS" = "x32"],
+         [
+          AC_SUBST([PLUGINLDFLAGS], ["-Wl,--kill-at"])
+         ]
+      )
+   ]
+)
+
+
+PKG_CHECK_MODULES([VapourSynth], [vapoursynth])
+
+PKG_CHECK_MODULES([SNDFILE], [sndfile])
+
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT